JP2023001823A - Leakage inspection device and program - Google Patents

Abstract

To enable leakage inspection that does not require craftsmanship.SOLUTION: A leakage inspection device used by an operator on a site for inspecting leakage of fluid from a pipe is provided with an acquisition section that acquires vibration data at a measurement point during inspection work and a control section that displays a spectrum of the vibration data on a screen showing a result obtained by analyzing the vibration data in real-time.SELECTED DRAWING: Figure 11

Description

Applied for application of Article 30, Paragraph 2 of the Patent Act Date of publication of website March 22 to 26, 2021 Representative URL of website https://vsstatic. akamaized. net/event/30/66/19/1/rt/1/resources/koeisetsubi_05-7EB6. pdf

The present invention relates to a leak test device and program.

At a site where water leakage or the like is to be inspected, it is required that an operator be able to distinguish the state of water leakage with his or her ears. However, a lot of experience is required to distinguish between sounds caused by water leakage and other sounds. In other words, craftsmanship is required.

JP 2008-292338 A

Today, the aging of field workers and the succession of skills have become issues. In addition, it is difficult to ensure ex post facto verification and objectivity with methods that rely on craftsmanship.

It is an object of the present invention to enable leak testing that does not require craftsmanship.

The invention according to claim 1 is a leakage inspection device used by an operator at a site where a fluid leakage from a pipe is inspected, the acquisition unit acquiring vibration data at a measurement point during inspection work, and a control section for displaying a spectrum of the vibration data or a spectrum of the vibration data on a screen showing a result of analyzing the vibration data in real time.
The invention according to claim 2 is the leak inspection device according to claim 1, wherein the control unit arranges a button on the screen for registering the measurement point being displayed as a leak point.
The invention according to claim 3 is the leak inspection device according to claim 1 or 2, wherein the control unit displays an image of the measurement point on the screen.
In the invention according to claim 4, the control unit displays on the screen information indicating a probability that a leak has occurred at the measurement point. It is an inspection device.
The invention according to claim 5 is the leak inspection device according to claim 4, wherein the probability is displayed in association with a plurality of times of measurement for the same measurement point.
According to the invention of claim 6, the computer used for the leak inspection of the fluid from the pipe has a function of acquiring vibration data at the measurement point during the inspection work, and a screen showing the result of analyzing the vibration data in real time. and a function of displaying the spectrum of the vibration data or the spectrum.

According to the first aspect of the invention, it is possible to perform a leak test that does not require craftsmanship.
According to the second aspect of the invention, when the leak point is confirmed by the spectrum waveform, the operator can register it as the leak point during the measurement.
According to the third aspect of the invention, since there is an image of the measurement point, it becomes easy to determine the leakage point on site after the fact.
According to the fourth aspect of the invention, confirmation of the information indicating the probability can assist the judgment of the leak point by the spectrum waveform.
According to the fifth aspect of the invention, it becomes easy to determine the possibility of leakage by confirming the probability a plurality of times.
According to the sixth aspect of the invention, it is possible to perform a leak test that does not require craftsmanship.

1 is a diagram illustrating a conceptual configuration example of a water leakage inspection system used in Embodiment 1; FIG. FIG. 2 is a diagram for explaining an overview of the connection configuration of the water leakage inspection system used in Embodiment 1 and the flow of data between devices; 2 is a diagram illustrating an example of hardware configurations of an information terminal and an analysis server used in Embodiment 1; FIG. (A) is a configuration example of an information terminal, and (B) is a configuration example of an analysis server. It is a figure which shows the data structure example of a database. It is a figure explaining an example of the processing operation performed by cooperation with an information terminal and an analysis server, when an operator selects simple measurement mode. FIG. 10 is a diagram illustrating an example of transition of operation screens up to input of site information when a simple measurement mode is selected; (A) is an initial screen, and (B) to (D) are input screens for site information. FIG. 10 is a diagram illustrating an example of transition of an operation screen after field information is input when a simple measurement mode is selected; (A) is an operation screen used to select whether or not to image a measurement location, (B) is an operation screen during imaging, (C) is an operation screen for instructing the start of measurement, (D) is an operation screen indicating that measurement is in progress. It is a figure explaining an example of the spectrum which is an analysis result of vibration data. (A) is an example spectrum when there is no water leakage, (B) is an example spectrum when the possibility of water leakage is suspected, and (C) is an example spectrum when the possibility of water leakage is high. FIG. 10 is a diagram illustrating a transition example of operation screens displayed after the first measurement is completed when the simple measurement mode is selected; (A) is an operation screen used to select whether to continue measurement, (B) is an operation screen used to select whether to image the measurement location, and (C) is an operation screen used during imaging. It is an operation screen, and (D) is an operation screen for instructing the start of measurement. FIG. 10 is a diagram illustrating another transition example of the operation screen displayed after the first measurement is completed when the simple measurement mode is selected; (A) is an operation screen used to select whether to continue measurement, (B) is an operation screen used to select whether to image the measurement location, and (C) is during measurement. It is an operation screen showing that there is. FIG. 10 is a diagram illustrating another transition example of the operation screen displayed after the second measurement is completed when the simple measurement mode is selected; (A) is the operation screen immediately after the second measurement is completed, (B) is the selection screen explaining the state in which the button labeled "details" is selected, and (C) is the analysis result. (D) is an operation screen after the "close" button is operated. FIG. 10 is a diagram illustrating another transition example of the operation screen displayed after the second measurement is completed when the simple measurement mode is selected; (A) is the operation screen immediately after the second measurement is completed, (B) is the operation screen for explaining the state in which the check boxes for the analysis results of the first and second times are selected, and (C) is the operation screen. It is a comparison screen of two selected analysis results, and (D) is an operation screen after the "close" button is operated. It is a figure explaining an example of the processing operation performed by cooperation with an information terminal and an analysis server, when an operator selects detailed measurement mode. FIG. 10 is a diagram illustrating an example of transition of operation screens up to input of construction information when the detailed measurement mode is selected; (A) is an initial screen, and (B) to (D) are construction information input screens. FIG. 10 is a diagram illustrating a transition example used for inputting site information when a detailed measurement mode is selected; (A) to (C) are input screens for field information. FIG. 10 is a diagram illustrating an example of transition of operation screens when measuring an entire image of a measurement location when a detailed measurement mode is selected; (A) is an operation screen used for selecting whether or not to image the entire image of the measurement location, (B) is an operation screen during imaging, (C) is an operation screen after imaging, (D ) is an operation screen used to specify a measurement point. FIG. 10 is a diagram illustrating an example of transition of operation screens displayed until the first measurement is started when the detailed measurement mode is selected; (A) is an operation screen for setting the measurement location, (B) is a selection screen for imaging the measurement location, (C) is an operation screen immediately after imaging, and (D) is a screen for starting measurement. This is the operation screen. FIG. 10 is a diagram illustrating an example of transition of operation screens when on-site measurements are repeated when the detailed measurement mode is selected; (A) is an operation screen indicating that measurement is in progress, (B) is an operation screen displayed immediately after the measurement of two measurement points is completed, and (C) is an operation screen that is displayed after measurement of three measurement points is completed. This is an operation screen displayed immediately after the end of the measurement, and (D) is an operation screen displayed immediately after the end of the measurement of the six measurement points. FIG. 10 is a diagram for explaining an example of an operation screen used to display detailed analysis results of measurement points; (A) represents the upper part of the screen, and (B) represents the lower part of the screen. FIG. 10 is a diagram illustrating an example of transition of operation screens when ending the detailed measurement mode; (A) shows an operation screen when the end of measurement is instructed, (B) shows an operation screen for designating the handling of measurement results, and (C) shows an operation screen used to end the detailed measurement mode. FIG. 10 is a diagram illustrating a conceptual configuration example of a water leakage inspection system used in Embodiment 2; FIG. 10 is a diagram for explaining an outline of data flow between apparatuses constituting a water leakage inspection system used in Embodiment 2; FIG. 10 is a diagram illustrating a conceptual configuration example of a water leakage inspection system used in Embodiment 3; (A) is an example of the external appearance of a water leakage inspection system, and (B) is a diagram for explaining an outline of data flow between devices constituting the water leakage inspection system. FIG. 10 is a diagram for explaining an example of an operation screen used for selecting the type of image to be used as the entire image; FIG. 10 is a diagram for explaining a display example of an operation screen when using an aerial photograph of a leak inspection site taken from above, an image taken by a drone, or any similar image as a whole image; It is a figure explaining an example of the spectrum which is an analysis result of vibration data. (A) is an example spectrum when there is no water leakage, (B) is an example spectrum when the possibility of water leakage is suspected, and (C) is an example spectrum when the possibility of water leakage is high. FIG. 10 is a diagram illustrating an example of transition of operation screens before and after changing the structure of the mesh; (A) shows the overall image synthesized with the mesh set in the initial settings, (B) shows an example of the screen used to accept changes in the mesh structure, and (C) shows the synthesized mesh after the change. shows the whole image.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described with reference to the drawings.
<Embodiment 1>
<System configuration>
FIG. 1 is a diagram illustrating a conceptual configuration example of a water leakage inspection system 1 used in Embodiment 1. As shown in FIG.

A water leakage inspection system 1 shown in FIG.
The communication network 50 here is, for example, the Internet, a mobile communication system such as 4G or 5G. A part of the communication network 50 includes a wireless LAN (=Local Area Network) and a wired LAN.

A water leak detection system 10 shown in FIG. 1 presents a water leak detector 20 that measures vibration at a measurement point, and the results of analysis of the vibration measured by the water leak detector 20 (hereinafter referred to as "vibration data") to the operator. It is composed of an information terminal 30 that The information terminal 30 here is an example of a leak test device used on site.
The measurement points here are assumed to be, for example, the surface of exposed pipes, the ground surface where pipes are buried, the walls and ceilings of structures where pipes are installed, and facilities such as valves.
In this embodiment, a point at which vibration data is measured is called a "measurement point" or a "measurement point." In this implementation, the measurement points or locations are determined by the site operator.

For example, a water pipe, a water supply pipe, a drain pipe, a sewer pipe, a gas pipe, and a refrigerant pipe are assumed as the pipes in the present embodiment.
Liquids flow in water pipes, drain pipes, and sewage pipes, and gases flow in gas pipes and refrigerant pipes. Liquids here include, for example, tap water, sewage, rain water, and cooling water.
In addition to city gas, gas includes gas, air, steam, etc. as fuel and reactants.
The piping also includes piping through which liquid materials and fuels handled in various chemical plants and factories flow. These liquids and gases are examples of fluids flowing through piping.

The water leak detector 20 includes a metal sound listening rod 21 that transmits vibration at a measurement point, a grip 22 that is held by an operator, and a vibration sensor 23 that converts vibration data propagated from the sound listening rod 21 into an electric signal. , a communication cable 24 and an apparatus main body 25 . For the vibration sensor 23, for example, a bone conduction pickup sensor is used.
The device main body 25 contains, for example, a rechargeable battery, and the battery supplies electric power necessary for operating the vibration sensor 23 and the like.

The device main body 25 also includes an amplifier for adjusting the gain of vibration data received as an electric signal from the vibration sensor 23 and a communication device for transmitting the amplified vibration data to the information terminal 30 .
In the case of this embodiment, a USB (=Universal Serial Bus) connector is used for the communication device. Therefore, the device body 25 and the information terminal 30 are electrically connected through the USB cable 24A.

A notch 26 is provided at the upper end of the device main body 25 so as not to interfere with imaging by a camera 35 (see FIG. 3 described later) provided on the information terminal 30 . The position and size of the notch 26 are determined according to the information terminal 30 attached to the device main body 25 and used.
In addition, the device main body 25 has a volume button for volume adjustment used when reproducing vibration data as sound from an earphone, a controller for adjusting the signal strength of the vibration data input from the vibration sensor 23, a power button, and the like. built-in.

In the case of this embodiment, a smart phone is used as the information terminal 30 .
In addition, as the information terminal 30, it is possible to use a tablet computer, notebook computer, smart watch, smart glasses, etc. that are wirelessly connected by a USB wireless adapter or a Bluetooth (=registered trademark) adapter.

The analysis server 40 is a server that is located on the cloud side and executes vibration data analysis processing. In the case of this embodiment, in addition to generating a spectrum of vibration data, a waveform diagram of the spectrum, and the like, it has a function of calculating the possibility that a measurement point is a water leakage location using a numerical value such as a percentage.
The analysis server 40 is provided with artificial intelligence for water leakage determination, for example. Artificial intelligence is realized as a learning model that learns vibration data of water leakage points as teacher data.

When vibration data is input to the learning model, the probability of water leakage is output as a numerical value such as percentage. The learning model is based on the material of the pipe, the type of instrument used for measurement, the estimated depth of the pipe, the density of the soil in which the pipe is buried, the diameter of the pipe, the water pressure, and the vibration data corresponding to the condition of the measurement surface. should be learned as training data.
A neural network, for example, is used for the learning algorithm.

<Circuit configuration>
FIG. 2 is a diagram for explaining an overview of the connection configuration of the water leakage inspection system 1 used in Embodiment 1 and the flow of data between devices.
In the water leak detector 20, vibration data is supplied from the vibration sensor 23 to the body circuit 25A of the device body 25. As shown in FIG. The body circuit 25A here includes an amplifier that electronically amplifies the vibration data. The gain of the amplifier in this embodiment can be switched in three steps by switch operation.
Vibration data is acquired for approximately 5 seconds in one measurement.

The body circuit 25A is provided with a bandpass filter for selectively extracting a frequency band containing many vibration components due to water leakage. For example, a bandpass filter with a passband of approximately 100 Hz to 4 kHz is used.
However, the vibration data in the frequency band that passes through the band-pass filter includes environmental sounds in addition to the leak sound. Environmental sound is sound that depends on the measurement point, and becomes noise in the detection of water leakage sound.

The vibration data amplified by the main body circuit 25A is output to the information terminal 30. FIG. The information terminal 30 adds the measurement time, site information, and the like to the obtained vibration data, and transmits the vibration data to the analysis server 40 .
The analysis server 40 generates the spectrum of the vibration data and the spectrum, and transmits to the information terminal 30 as an analysis result the possibility that the measurement point is a water leakage location.
It takes approximately 15 to 20 seconds for the information terminal 30 to acquire the analysis result from the analysis server 40 . However, this time varies depending on the communication environment and the processing capability of the analysis server 40 .
The information terminal 30 displays the obtained analysis results to the workers on site in real time.

<Hardware configuration>
FIG. 3 is a diagram illustrating an example of the hardware configuration of the information terminal 30 and analysis server 40 used in the first embodiment. (A) is a configuration example of the information terminal 30 , and (B) is a configuration example of the analysis server 40 .
The information terminal 30 shown in FIG. 3A includes a processor 31 that controls the operation of the entire device, a RAM (=random access memory) 32 that is used as a main storage device, and a flash memory 33 that is a nonvolatile semiconductor memory. , a touch panel 34, a camera 35, and a communication module 36 used for communication with the analysis server 40 and the like.
In the case of the present embodiment, the processor 31 is composed of a CPU (=Central Processing Unit) or a GPU (=Graphics Processing Unit), and implements various functions by executing programs.

One of the functions is the ability to acquire vibration data at measurement points during inspection work. This function corresponds to the "acquisition unit" in claims.
Another function is to transmit the acquired vibration data to a predetermined analysis server 40 through the communication module 36 .
Another function is to display an operation screen for assisting inspection work by workers. This function also includes a function of displaying the spectrum obtained as the analysis result and the spectrum on the touch panel 34 . This function corresponds to the "control section" in claims.

The RAM 32 is used as a program execution area.
The flash memory 33 stores a BIOS (=Basic Input Output System), firmware, an application program for leak detection, vibration data, and the like. The vibration data is deleted after the upload to the analysis server 40 is completed. Therefore, if uploading of the vibration data to the analysis server 40 is not completed due to communication failure or the like, the vibration data is stored in the flash memory 33 .

The touch panel 34 is composed of a display and a capacitive touch sensor arranged on its surface.
For the display, for example, a liquid crystal display or an organic EL (=Electro-Luminescence) display is used.
A touch sensor is a highly optically transparent device. Therefore, the touch sensor can detect the operator's tap operation or the like without obstructing the operator's visual recognition.

For the camera 35, for example, a CMOS (=Complementary Metal Oxide Semiconductor) image sensor is used.
For the communication module 36, devices conforming to mobile communication systems such as USB (=Universal Serial Bus), wireless LAN, Bluetooth, 4G and 5G are used.
The processor 31, RAM 32, and flash memory 33 in this embodiment form a so-called computer.

The analysis server 40 shown in FIG. 3B includes a processor 41 that controls the operation of the entire device, a RAM 42 that is used as a main storage device, a ROM (Read Only Memory) 43 that stores BIOS and the like, and a secondary storage device. and a communication module 45 used for communication with the communication network 50 . These devices are connected through a signal line 46 such as a bus.

Devices such as a keyboard and a mouse may be connected to the analysis server 40 in addition to the display.
Also, the analysis server 40 does not need to be a single server, and may be an aggregate of a plurality of servers with different roles and functions.

The processor 41 is composed of a CPU and implements various functions through execution of programs.
In the case of the present embodiment, some of the functions include a function of storing the acquired vibration data in association with the site, a function of analyzing the acquired vibration data and returning it to the information terminal 30 at the site, and the like. Analysis results are stored in the hard disk device 44 .

The hard disk device 44 stores a database 400 (see FIG. 4, which will be described later) for water leakage inspection. In the database 400, vibration data uploaded from the site, analysis results, and the like are stored in association with measurement points.
In addition, the hard disk device 44 stores an operating system and an application program for analysis.
However, instead of the hard disk device 44, a large-capacity semiconductor memory may be used.

For the communication module 45, a device conforming to a mobile communication system such as wireless LAN, Ethernet (registered trademark), 4G, 5G, or the like is used.
The processor 41, the RAM 42, and the ROM 43 in this embodiment form a so-called computer.

<Example of database data structure>
FIG. 4 is a diagram showing an example data structure of the database 400. As shown in FIG.
The data structure shown in FIG. 4 is an example, and other items may be included instead of the displayed items. Also, items not shown in FIG. 4 may be included.
The site ID 401 is an ID used for linking with information specifying the site of the water leakage inspection. The ID here is associated with the name, address, etc. of the site of the leak inspection. The name, address, etc. of the leak inspection site are stored in another table.

The date of inspection is stored in the date of inspection 402 . In FIG. 4, the inspection date is specified by month and day, but the inspection date in the data is stored including the inspection year.
The entire image ID 403 is an ID used for linking with an image including the entire site to be inspected. In the present embodiment, an image, a drawing, etc. corresponding to the surroundings of the site used to specify the measurement points is referred to as a "whole image".

The overall image includes images taken by the information terminal 30 (see FIG. 1) and other terminals, as well as aerial photographs and photographs taken by a drone from above the site (hereinafter also referred to as "aerial photographs"), construction site Use drawings such as diagrams and blueprints, scanned maps, and digital maps.
The overall image to be used is specified by the operator at the start of inspection.

The in-mesh position information 404 is information indicating the position in a virtual mesh that is combined with the entire image to specify the measurement point. If the mesh is composed of 10 rows and 10 columns of partitions, the intra-mesh position information 404 identifies the position of any one of 100 partitions in total. A partition here defines a specific partial area within the overall image.

In the case of FIG. 4, the intra-mesh position information 404 is given by coordinates within the mesh. "10*10" in the figure means the 10th row and 10th column section. Incidentally, the origin of the coordinates is determined in advance. For example, if the north direction is the top of the image, the upper left corner of the image is the origin.

The measurement point ID 405 is the management ID of the measurement point. In the database 400 shown in FIG. 4, the measurement points in the first and second rows are the same. This means that two measurements have been performed for the same measurement point.
The measurement time 406 records the measurement time of the vibration data. For the measurement time 406, for example, the time when the information terminal 30 acquired the vibration data is used.
The vibration data ID 407 is an ID that identifies vibration data stored in the storage area.

The captured image ID 408 is an ID that identifies an image captured on site in association with the measurement point. When multiple images are captured, multiple IDs are recorded.
The analyzed waveform ID 409 is an ID that specifies the spectrum of vibration data stored in the hard disk device 44 (see FIG. 3B).
The spectrum is a characteristic diagram with frequency on the horizontal axis and sound pressure (dB) on the vertical axis. The spectrum is a characteristic diagram in which the horizontal axis is time and the vertical axis is frequency, and the difference in sound pressure (dB) for each frequency at each time is expressed by the difference in color tone.

The leak probability 410 records a numerical value that indicates the probability that the measurement point is the leak point. In this embodiment, the possibility of the leak location is given as a percentage. Instead of or together with the water leakage probability 410, the water leakage possibility classification may be recorded.
Both the analyzed waveform and the water leakage probability here are examples of the analysis results.
Information as to whether or not the operator has set a leak location is recorded in the leak location setting 411 .

<Processing operation>
<Simple measurement mode>
Processing operations executed when the simple measurement mode is selected and transition of operation screens will be described below with reference to FIGS. 5 to 12. FIG. Operation screens and transitions between screens, which will be described later, are examples.
In the present embodiment, the simple measurement mode is a measurement mode used for narrowing down pipeline systems with a high possibility of water leakage.
Since the purpose of this measurement mode is to narrow down the pipeline system with the possibility of water leakage, even if the analysis server 40 (see FIG. 1) analyzes the vibration data, the vibration data is not stored.

FIG. 5 is a diagram illustrating an example of processing operations performed by cooperation between the information terminal 30 and the analysis server 40 when the operator selects the simple measurement mode. Note that the symbol S shown in the figure means a step.
6 to 12 show transition examples of operation screens displayed on the information terminal 30 (see FIG. 1) when the simple measurement mode is selected.

The processing shown in FIG. 5 is realized through program execution by the processor 31 of the information terminal 30 (see FIG. 3A) and the processor 41 of the analysis server 40 (see FIG. 3B).
First, the information terminal 30 accepts selection of the measurement mode on the initial screen (step 1). Options include a detailed measurement mode in addition to the simple measurement mode. The detailed measurement mode is a measurement mode used for narrowing down points with a high possibility of water leakage.
Upon receiving the selection, the information terminal 30 determines whether or not it is the simple measurement mode (step 2).
If the simple measurement mode has been selected as the measurement mode, the information terminal 30 obtains a positive result in step 2 . The information terminal 30 that has obtained a positive result in step 2 accepts input of site information (step 3).

FIG. 6 is a diagram illustrating an example of transition of operation screens up to input of field information when the simple measurement mode is selected. (A) is an initial screen 300A, and (B) to (D) are field information input screens 300B to 300D.
On the initial screen 300A shown in FIG. 6A, a button 301 labeled "simple measurement" and a button 302 labeled "detailed measurement" are arranged. In FIG. 6A, the selected state of the button 301 is represented by shading.

An input screen 300B shown in FIG. 6B is for inputting materials of pipes buried or exposed at the site.
The input screen 300B includes a material selection field 303, a button 304 with a left-pointing arrow meaning "return", a button 305 with a right-pointing arrow meaning "advance", and a "stop" button 306. are placed.
In the case of FIG. 6B, the selection column 303 displays five options: steel pipe, polyethylene pipe, vinyl chloride pipe, and others, unknown. Of course, these are only examples.
Note that when the button 304 is operated, the screen transitions to the initial screen 300A. On the other hand, when the button 305 is operated, the screen transitions to an input screen 300C shown in FIG. 6(C). Checking a check box may be mandatory for transition to the input screen 300C. The same applies to other input screens 300C and 300D.

An input screen 300C shown in FIG. 6C is for input of the measuring equipment.
The input screen 300C includes a selection field 307 for equipment used to measure vibration data, a button 304 with a leftward arrow meaning "return", and a button 305 with a rightward arrow meaning "forward". , and a “Cancel” button 306 are arranged.
In the case of FIG. 6(C), the selection field 307 displays three options: "listening stick", "flat", and "don't know". Here, "flat placement" means removing the vibration sensor 23 (see FIG. 1) from the sound listening bar 21 (see FIG. 1) and placing it directly on the measurement point. Of course, the contents of the options are just an example.
Note that when the button 304 is operated, the screen transitions to the previous input screen 300B. On the other hand, when the button 305 is operated, the screen transitions to an input screen 300D shown in FIG. 6(D).

An input screen 300D shown in FIG. 6D is for inputting the measured depth.
The input screen 300D includes a depth selection field 308, a button 304 with a leftward arrow meaning "return", a button 305 with a rightward arrow meaning "forward", and a "stop" button 306. are placed.
In the case of FIG. 6D, the selection column 308 displays seven options of 20 cm, 40 cm, 60 cm, 80 cm, 150 cm, 200 cm, and 250 cm. Of course, this is just an example. Alternatively, an option of "I don't know" may be prepared.
Note that when the button 304 is operated, the screen transitions to the previous operation screen 300C. On the other hand, when the button 305 is operated, the screen transitions to an operation screen 300E shown in FIG. 7(A).

Returning to the description of FIG.
When the field information has been input in step 3, the information terminal 30 determines whether or not to image the measurement point (step 4).
If a positive result is obtained in step 4, the information terminal 30 acquires the captured image (step 5). For example, the camera 35 (see FIG. 3A) of the information terminal 30 is used to capture the image. In the case of the simple measurement mode, the captured image data is exclusively used for checking in the field work.

When the image is acquired in step 5, or when a negative result is obtained in step 4, the information terminal 30 starts measurement (step 6) and transmits the measured vibration data etc. to the analysis server 40 ( step 7). Here, in addition to vibration data, site information is also uploaded.
Upon receiving the vibration data and the like, the analysis server 40 analyzes the vibration data (step 8). After the analysis process is completed, the analysis server 40 transmits the analysis result to the information terminal 30 (step 9).

The information terminal 30 that has received the analysis result from the analysis server 40 displays the analysis result (step 10).
After that, the information terminal 30 determines whether or not to continue the measurement (step 11).
If a positive result is obtained in step 11 , the information terminal 30 returns to step 4 . On the other hand, when a negative result is obtained in step 11, the information terminal 30 terminates the inspection process.

It takes about 15 to 20 seconds from the transmission of the vibration data until the analysis result is notified from the analysis server 40 to the information terminal 30 . Therefore, it is possible to start the next measurement continuously before displaying the analysis result.
In the case of this embodiment, the spectrum of vibration data is displayed as the analysis result. In addition, when displaying the analysis results, it is possible to display the analysis results for comparison multiple times.

FIG. 7 is a diagram illustrating a transition example of the operation screen after field information is input when the simple measurement mode is selected. (A) is an operation screen 300E used to select whether or not to image a measurement location, (B) is an operation screen 300F during imaging, and (C) is an operation screen 300G for instructing the start of measurement. , and (D) is an operation screen 300H indicating that measurement is in progress.
The operation screen 300E shown in FIG. 7A has a button 309 labeled "Imaging the measurement site", a button 310 labeled "Not imaging", and a label "Cancel measurement". button 311 is arranged. In FIG. 7A, the selected state of the button 309 is indicated by shading.

Note that when the button 310 is selected, the information terminal 30 immediately starts measuring vibration data. In this case, the operation screen 300E transitions to the operation screen 300H.
On the other hand, when the button 311 is operated, the information terminal 30 transitions to the initial screen 300A (see FIG. 6A).
On the operation screen 300F shown in FIG. 7B, a subject image 312 within the imaging field of the camera 35 (see FIG. 3A) is displayed on the screen. In the case of FIG. 7B, an image is taken of the vibration sensor 23 (reference numerals are omitted in the drawing) placed flat on the floor, which is the measurement location. When the imaging button 313 is tapped, the subject image 312 at the time of tapping is obtained as the image of the measurement location.

On the operation screen 300G shown in FIG. 7C, a button 314 labeled "start measurement" and a button 315 labeled "stop measurement" are displayed on the screen.
When button 314 is selected, operation screen 300G transitions to operation screen 300H.
An operation screen 300H shown in FIG. 7D displays a waveform display field 316 indicating sound pressure changes in the time axis direction of vibration data, and an icon 317 indicating that measurement is in progress.
In the case of this embodiment, the vibration at the measurement point is measured for about 5 seconds. The measured vibration data is automatically uploaded from the information terminal 30 to the analysis server 40 (see FIG. 1).

FIG. 8 is a diagram illustrating an example of a spectrum that is an analysis result of vibration data. (A) is an example spectrum when there is no water leakage, (B) is an example spectrum when the possibility of water leakage is suspected, and (C) is an example spectrum when the possibility of water leakage is high.
The spectrum without water leakage is almost flat, but in the spectrum suspected of water leakage, a whisker-like spike is superimposed on the frequency band enclosed by the dashed line. The cause is considered to be temporary vibration detection such as wind and noise at the site. This is so-called noise. Noise effects may be distinguished by acquiring vibration data multiple times.
A steady and continuous high sound pressure appears in the frequency band indicated by the dashed line in the spectrum where the possibility of water leakage is high. This type of corrugation is characteristic of water leaks.

<When the second measurement starts in succession>
FIG. 9 is a diagram illustrating a transition example of the operation screen displayed after the first measurement is completed when the simple measurement mode is selected. (A) is an operation screen 300I used to select whether or not to continue measurement, (B) is an operation screen 300E used to select whether to image the measurement location, and (C) is an image. (D) is an operation screen 300G for instructing the start of measurement. In FIG. 9, parts corresponding to those in FIG. 7 are shown with reference numerals corresponding thereto.

The selection screen 300I shown in FIG. 9A includes a button 318 labeled "continue measurement", a button 319 labeled "end", and an analysis result display field for the first measurement. 320 and a button 321 labeled "details". In FIG. 9A, the selected state of the button 318 is indicated by shading.
When button 318 is selected, the same measurement as the first measurement is started.
When the button 319 is selected, the vibration data measurement is immediately terminated, and the initial screen 300A is displayed.

In the analysis result display column 320, the time when the first measurement was executed and the completion of transmission of the vibration data to the analysis server 40 are described along with the check boxes for selection.
In the case of the operation screen 300I shown in FIG. 9A, 16:31 is shown as the first measurement time.
When the button 321 is selected, details of the analysis results of the first vibration data are displayed.

An operation screen 300E shown in FIG. 9B is the same as the operation screen 300E shown in FIG. 7A. In FIG. 9B as well, the button 309 labeled "Capturing measurement location" is selected.
An operation screen 300F shown in FIG. 9C is the same as the operation screen 300F shown in FIG. 7B. When the imaging button 313 is tapped in FIG. 9C, the operation screen 300F transitions to the operation screen 300G shown in FIG. 9D. Since the screen transition after the start of measurement is the same as that of the first imaging, the explanation is omitted.

<When not measuring the image of the measurement point>
FIG. 10 is a diagram illustrating another transition example of the operation screen displayed after the first measurement is completed when the simple measurement mode is selected. (A) is an operation screen 300I used to select whether to continue measurement, (B) is an operation screen 300E used to select whether to image a measurement location, and (C) is a measurement It is an operation screen 300H showing that it is in progress. In FIG. 10, the parts corresponding to those in FIGS. 7 and 9 are indicated by the reference numerals.
10A and 10B, button 310 labeled "do not image" is selected after button 318 is selected. Therefore, the operation screen 300E transitions to the operation screen 300H shown in FIG. 10C, and recording of vibration data is started.

<When the detail button is operated after the second measurement is completed>
FIG. 11 is a diagram illustrating another transition example of the operation screen displayed after the second measurement is completed when the simple measurement mode is selected. (A) is the operation screen 300J immediately after the second measurement is finished, (B) is the selection screen 300J explaining the state in which the button 321A labeled "details" is selected, and (C). is the detailed display screen 300K of the analysis result, and (D) is the operation screen 300J after the "close" button 325 is operated.
In FIG. 11, parts corresponding to those in FIG. 9 are shown with reference numerals corresponding thereto.

Display fields 320A and 320B for two analysis results are displayed on the operation screen 300J shown in FIG. . Note that in FIG. 11A, the second analysis result has already been notified from the analysis server 40 . Therefore, the display column 320B indicates that the second measurement time is 16:32, and the possibility of the water leakage location is 0%. Note that none of the buttons is selected in FIG. 11(A).

On the operation screen 300J shown in FIG. 11B, a button 321A corresponding to the first analysis result display field 320A is selected.
When the button 321A is selected, the operation screen 300J shown in FIG. 11(B) transitions to the detailed display screen 300K shown in FIG. 11(C).
The detailed display screen 300K shown in FIG. 11(C) includes a spectrum 322 of the vibration data recorded in the first measurement, a water leakage probability column 323 of the first measurement result, and the measurement performed in the first measurement. An image 324 capturing the location and a button 325 labeled "Close" are displayed.

Since the spectrum 322 is displayed on the detailed display screen 300K, the operator can visually determine the characteristics of the vibration data. Since the features of the vibration data are visualized, no craftsmanship is required to hear the vibration data.
Further, on the detailed display screen 300K, a water leakage probability column 323 indicates that the possibility that the measurement location is a water leakage location is 0% in the first analysis result. The probabilistic reference allows the operator to assist his judgment with the spectrum 322 .
When the button 325 is operated, the detailed display screen 300K transitions to an operation screen 300J shown in FIG. 11(D).

In the operation screen 300J shown in FIG. 11D, the button 319 labeled "end" is in the selected state. When the button 319 is selected, the measurement of vibration data is immediately terminated, and the screen transitions to the initial screen 300A shown in FIG. 6(A).
The simple measurement mode is a measurement mode that is used by an on-site worker to simply and efficiently identify a leaking pipeline, so vibration data and analysis results are not stored in the analysis server 40 .

<When the comparison button for two analysis results is operated after the second measurement is completed>
FIG. 12 is a diagram illustrating another transition example of the operation screen displayed after the second measurement is completed when the simple measurement mode is selected. (A) is the operation screen 300J immediately after the second measurement is completed, (B) is the operation screen 300L for explaining the state in which the check boxes for the analysis results of the first and second times are selected, and (C ) is the comparison screen 300M of the two selected analysis results, and (D) is the operation screen 300N after the “close” button 325 is operated. The comparison screen 300M here is an example of the "screen" in the claims.
In FIG. 12, the parts corresponding to those in FIG. 11 are indicated by the reference numerals.

Display fields 320A and 320B for two analysis results are displayed on the operation screen 300J shown in FIG. 12A, and buttons 321A and 321B labeled "details" are displayed corresponding to them. In addition, in FIG. 12A, the second analysis result has already been notified from the analysis server 40 . Therefore, the display column 320B indicates that the second measurement time is 16:32, and the possibility of the water leakage location is 0%. Note that none of the buttons is selected in FIG. 12(A).

On the operation screen 300L shown in FIG. 12B, a button 326 labeled "Compare" is displayed as a result of selecting two check boxes. In FIG. 12B, button 326 is in the selected state.
The comparison screen 300M shown in FIG. 12(C) includes a spectrum 327 corresponding to the vibration data recorded in the first and second measurements, a water leakage probability column 328A of the first measurement result, and the second measurement result. and a button 325 labeled "close" are displayed.

Since the first water leakage probability column 328A and the second water leakage probability column 328B are displayed side by side on the comparison screen 300M, the operator can visually determine the possibility of water leakage.
When the "close" button 325 is operated on the comparison screen 300M, the screen transitions to an operation screen 300N shown in FIG. 12(D). When the "close" button 325 is operated to transition to the operation screen 300N, the check boxes of the analysis result display columns 320A and 320B are displayed in a cleared state.
In addition, in FIG. 12D, the "end" button 319 is in a selected state. When the button 319 is selected, the measurement of vibration data is immediately terminated, and the screen transitions to the initial screen 300A shown in FIG. 6(A).
The simple measurement mode is a measurement mode that is used by an on-site worker to simply and efficiently identify a leaking pipeline, so vibration data and analysis results are not stored in the analysis server 40 .

<Detailed measurement mode>
Processing operations executed when the detailed measurement mode is selected and transitions of operation screens will be described below with reference to FIGS. 13 to 20. FIG. Operation screens and transitions between screens, which will be described later, are examples.
In the present embodiment, the detailed measurement mode is a measurement mode used for pinpointing locations where there is a high possibility of water leakage.

FIG. 13 is a diagram for explaining an example of processing operations performed by cooperation between the information terminal 30 and the analysis server 40 when the operator selects the detailed measurement mode. Note that the symbol S shown in the figure means a step.
The processing procedure shown in FIG. 13 is started when a negative result is obtained in step 2 (see FIG. 5) described above. This is because the present embodiment assumes that there are two selectable measurement modes, a simple measurement mode and a detailed measurement mode.
14 to 20 show transition examples of operation screens displayed on the information terminal 30 (see FIG. 1) when the detailed measurement mode is selected.

The processing shown in FIG. 13 is also realized through program execution by the processor 31 of the information terminal 30 (see FIG. 3A) and the processor 41 of the analysis server 40 (see FIG. 3B).
The information terminal 30, which has started the detailed measurement mode, receives input of construction information and site information (step 21).
FIG. 14 is a diagram illustrating an example of transition of operation screens up to input of construction information when the detailed measurement mode is selected. (A) is an initial screen 300A, and (B) to (D) are construction information input screens 300O to 300Q. In FIG. 14, parts corresponding to those in FIG. 6 are shown with reference numerals.

On the initial screen 300A shown in FIG. 14A, a button 301 labeled "simple measurement" and a button 302 labeled "detailed measurement" are arranged. In FIG. 14A, the selected state of the button 302 is represented by shading.
An input screen 300O shown in FIG. 14B is used to select a registered construction name or register a new construction name.

Construction 1 to construction 7 are displayed as a list 330 of registered construction names on the input screen 300O. In addition, a button 331 labeled "new registration" is arranged at the bottom of the input screen 300O. In the input screen 300O shown in FIG. 14B, the selected state of the button 331 is indicated by shading.
Incidentally, when one of the registered construction names is selected, the input screen 300O is changed to the field information input screen.

An input screen 300P shown in FIG. 14C is used to input a new construction name. On the input screen 300P, an input field 332 for items to be registered, a button 333 labeled "Cancel", and a button 334 labeled "Register" are arranged.
In the case of the input screen 300P shown in FIG. 14C, "construction name", "construction number", site "address", and "comment" are prepared as registration items.
When the button 333 is operated, the screen transitions to the input screen 300O. On the other hand, when the button 334 is operated, the entered items are registered, and the screen transitions to the input screen 300Q shown in FIG. 14(D).
The input screen 300Q shown in FIG. 14(D) has an additional line of "construction name 8: buried pipe measurement 1".

After a predetermined period of time has passed since the input screen 300Q shown in FIG. 14(D) was displayed, the screen switches to an input screen for field information.
FIG. 15 is a diagram illustrating a transition example used for inputting field information when the detailed measurement mode is selected. (A) to (C) are field information input screens 300B to 300D. In FIG. 15, parts corresponding to those in FIG. 6 are shown with reference numerals.

The input screen 300B shown in FIG. 15A is for inputting the material of pipes buried or exposed at the site. A button 304 with a left-pointing arrow indicating "go", a button 305 with a right-pointing arrow indicating "advance", and a "stop" button 306 are arranged.
When the button 304 is operated, the screen transitions to the input screen 300O (or the input screen 300Q). On the other hand, when the button 305 is operated, the screen transitions to an input screen 300C shown in FIG. 15(B).

The input screen 300C shown in FIG. 15(B) is for inputting the equipment used to measure the vibration data, and the screen has a selection field 307 for the equipment and a leftward arrow meaning "return". button 304, button 305 with an arrow pointing to the right meaning "forward", and "stop" button 306 are arranged.
When the button 304 is operated, the screen transitions to the previous input screen 300B. On the other hand, when the button 305 is operated, the screen transitions to an input screen 300D shown in FIG. 15(C).

The input screen 300D shown in FIG. 15C is for inputting the measurement depth, and includes a depth selection field 308, a button 304 with a left-pointing arrow meaning "return", and " A button 305 with an arrow pointing to the right meaning "go forward" and a "stop" button 306 are arranged.
When the button 304 is operated, the screen transitions to the previous input screen 300C. On the other hand, when the button 305 is operated, the screen transitions to an operation screen 300R shown in FIG. 16(A).

Returning to the description of FIG.
When the input of construction information and site information is completed in step 21, the information terminal 30 determines whether or not to acquire an entire image of the measurement location (step 22).
If a positive result is obtained in step 22, the information terminal 30 acquires the whole image of the type specified by the operator (step 23). For example, an image of a range in which there is a high possibility of water leakage is acquired.
Next, the information terminal 30 synthesizes the mesh with the entire image (step 24). As mentioned above, the mesh is composed of multiple partitions. In the case of this embodiment, the layout of the compartments is determined in advance.

Subsequently, the information terminal 30 accepts designation of measurement points by the operator (step 25). The measurement point here is performed by specifying one of a plurality of divisions forming the mesh.
After that, the information terminal 30 determines whether or not to image the measurement point (step 26). Note that if a negative result is obtained in step 22 described above, the information terminal 30 skips steps 23 to 25 and executes the determination of step 26 .
The image captured in step 26 is not for identifying the measurement point, but any image that is associated with the measurement point.

If a positive result is obtained in step 26, the information terminal 30 acquires the captured image (step 27). For example, the camera 35 of the information terminal 30 (see FIG. 3A) is used to capture the image.
When the image is acquired in step 27, or when a negative result is obtained in step 26, the information terminal 30 starts measurement (step 28) and transmits the acquired vibration data etc. to the analysis server 40 ( step 29). Here, information such as construction information, site information, date and time of measurement, etc. linked to the vibration data is also uploaded.

Upon receiving the vibration data and the like, the analysis server 40 analyzes the vibration data (step 30). After the analysis process is completed, the analysis server 40 transmits the analysis result to the information terminal 30 (step 31). The analysis server 40 also records the acquired measurement data and the like in the database 400 (see FIG. 4) (step 32).
On the other hand, the information terminal 30 that has received the analysis results displays the analysis results in association with specific measurement points within the mesh (step 33).
Next, the information terminal 30 determines whether or not the water leakage location is set (step 34). Specifically, it is determined whether or not the operator has set the water leakage location.

If a positive result is obtained in step 34, the information terminal 30 instructs the analysis server 40 to set the leak location (step 35).
The analysis server 40 that has received the instruction updates the database 400 in association with the measurement point currently being analyzed (step 37).
After instructing to set the leak location, or when a negative result is obtained in step 34, the information terminal 30 determines whether or not to continue the measurement (step 36).
If a positive result is obtained in step 36, the information terminal 30 returns to step 25 and accepts designation of a new measurement point.
On the other hand, when a negative result is obtained in step 36, the information terminal 30 terminates the inspection process.

FIG. 16 is a diagram illustrating a transition example of operation screens when measuring an entire image of a measurement location when the detailed measurement mode is selected. (A) is an operation screen 300R used for selecting whether or not to image the entire image of the measurement location, (B) is an operation screen 300S during imaging, and (C) is an operation screen 300T after imaging. , (D) is an operation screen 300U used for designating a measurement point.
The selection screen 300R shown in FIG. 16A includes a button 335 labeled "capture the entire image of the measurement site", a button 336 labeled "do not capture", and a button 336 labeled "stop measurement". A labeled button 337 is provided. In FIG. 16A, the selected state of the button 335 is indicated by shading.

Note that when the button 336 is selected, the information terminal 30 immediately starts measuring vibration data. In this case, the selection screen 300R transitions to the operation screen 300H (see FIG. 18).
On the other hand, when the button 337 is operated, the information terminal 30 transitions to the initial screen 300A (see FIG. 14A).
On the operation screen 300S shown in FIG. 16B, a subject image 312 within the imaging field of the camera 35 (see FIG. 3A) is displayed on the screen. In the case of FIG. 16B, an image is taken of the vibration sensor 23 (reference numerals are omitted in the figure) placed flat on the floor surface, which is the measurement location. When the imaging button 313 is tapped, the subject image 312 at the time of tapping is acquired as the entire image 312A of the measurement location.

The image obtained as the entire image is displayed on the operation screen 300T shown in FIG. 16(C).
If the operator wishes to retake the displayed image, the operator operates button 338 labeled "Retake". The information terminal 30 that has detected the operation of this button 338 returns to the operation screen 300S.
On the other hand, if the displayed image is to be used as it is, the operator operates a button 339 labeled "use photo". The information terminal 30 that detects the operation of this button 339 transitions to the operation screen 300U. In addition, in FIG. 16C, the selected state of the button 339 is indicated by shading.

An operation screen 300U shown in FIG. 16D is used for specifying and inputting measurement points. In the case of the operation screen 300U, a virtual mesh 340 is displayed in the center of the screen by synthesizing the overall image 312A. In the case of FIG. 16D, the mesh 340 is composed of a total of 84 partitions of 12 rows and 7 columns. In the case of this embodiment, the configuration of the mesh is based on initial settings.
Note that in FIG. 16D, the cursor K indicating the position of the candidate for the measurement point is positioned at the upper left corner of the mesh 340 .

The position of the cursor K specifying the measurement point can be moved by operating the cursor keys 341 . It should be noted that after acquisition of the entire image 312A, the information terminal 30 fixed to a tripod or the like may continue to capture images, and the captured image may be combined with the entire image 312A of the operation screen 300U. In this case, the actual positions of the tip of the sound listening rod 21 and the vibration sensor 23 can be confirmed on the screen. Therefore, it becomes easy to ensure the identity between the section designated on the screen and the positions where the tip of the sound listening rod 21 and the vibration sensor 23 are actually installed.

However, this method is only an example, and an image of the measurement point captured for each measurement may be matched with the overall image 312A by image processing to confirm the match between the designated section and the actual measurement point.
Also, if the section designated on the entire image 312A and the actual measurement point do not match, the relationship between the actual measurement point and the section on the entire image 312A may be automatically adjusted by image processing. .

Alternatively, a LiDAR (=Light Detection and Ranging) or the like installed in the information terminal 30 may be used to generate a survey map of the site and use it for the entire image. A virtual map obtained by synthesizing the mesh 340 with the survey map may be linked with other devices related to field work, such as other smartphones and smart glasses. If there is an artificial or natural object that can be used as a marker in the virtual map, by projecting the marker into the imaging field of view of the camera of another smartphone or smart glasses, the mesh 340 as seen from the point of the other device or Facilitates sharing of designated measurement points.

The marker can be a natural object such as stone or wood, or an artificial object such as a plastic figurine using a plurality of colors such as red, blue, and yellow. A plurality of markers, preferably three or more, are preferably used to specify the orientation. The marker desirably has a distinguishable color, shape, and size.
In addition, by utilizing the same function, it is easy to guide on-site workers to designated measurement points. For guidance, voice may be used, or a virtual arrow may be displayed in front of the display of another smartphone or the wearer of smart glasses. That is, augmented reality (AR) technology may be used.

Alternatively, a projector may be used to project an image of mesh 340 onto the leak test site to coincide with mesh 340 on captured global image 312A. If the image of the mesh 340 projected by the projector and the image of the mesh 340 captured as part of the overall image 312A displayed on the screen are guaranteed to match, after capturing the overall image 312A, the image projected onto the scene is Even if the actual measurement points are determined with reference to the divisions of the mesh 340, the identity of the divisions designated on the operation screen 300U can be ensured.

In addition, when projecting the image of the mesh 340 on the scene using a projector and imaging the projected scene as the entire image 312A, the sound listening rod 21 and the vibration sensor 23 are positioned in the section of the projected image. If the measurement is performed with the camera 35 and the situation is captured by the camera 35, the mesh 340 does not have to be combined with the entire image 312A of the information terminal 30. FIG. In this case, the image obtained by capturing the projected image of the mesh 340 is the entire image. In this case, the whole image 312A is subjected to image processing to extract a straight line portion corresponding to the mesh 340, and a region surrounded by the extracted straight lines is specified as a section. Then, the specified partition is managed by the intra-mesh position information 404 (see FIG. 4).

In the present embodiment, the virtual mesh 340 is combined with the overall image 312A. good too. In this case, the mesh 340 included in the overall image 312A is given by existing surveying threads. In this case as well, as in the case of projecting the image of the mesh 340 at the site, the image processing of the captured overall image 312A is performed to extract the straight line portion corresponding to the surveying thread, and the area surrounded by the extracted straight line is specified as a section, measurement points can be managed.

Note that an index 342 that expresses the probability of a leak location in color is displayed in the upper part of the operation screen 300U shown in FIG. 16(D). The indicator 342 shown in FIG. 16(D) has six levels of "0%", "20%", "40%", "60%", "80%", and "leakage". Colors are expressed darker. It should be noted that these divisions and forms of display are examples.
In addition, a display field 343 for the number of measured divisions is displayed on the operation screen 300U. In the case of FIG. 16(D), the number of measured sections is 0 (zero) because the entire image 312A has just been captured. Note that the denominator is 84 (=12×7).

The operation screen 300U also includes a button 344 for setting the section where the cursor K is positioned as a measurement point, a button 345 for displaying detailed analysis results of the measurement point on the screen, and a detailed measurement mode. A button 346 is arranged to be used when the measurement in .
Note that the button 344 is labeled "MEASURE POINT". Also, button 345 is labeled "View". Also, button 346 is labeled "Back".

FIG. 17 is a diagram illustrating a transition example of operation screens displayed until the first measurement is started when the detailed measurement mode is selected. (A) is the operation screen 300V when setting the measurement point, (B) is the operation screen 300E for imaging the measurement point, (C) is the operation screen 300T immediately after imaging, and (D) is the start of measurement. is an operation screen 300G for In FIG. 17, the parts corresponding to those in FIGS. 7 and 16 are indicated by the reference numerals.

In the case of the operation screen 300V shown in FIG. 17A, the cursor K is moved to the section where the vibration sensor 23 (see FIG. 1) placed flat on the floor is located. Here, when the button 344 is operated, the section where the cursor K is positioned is set as the measurement point. After that, the operation screen 300V transitions to the operation screen 300E.
On the operation screen 300E shown in FIG. 17B, a button 309 labeled "Imaging measurement location", a button 310 labeled "Not imaging", and a label "Stop measurement" are attached. button 311 is arranged. In FIG. 17B, the selected state of the button 309 is indicated by shading.

When the button 309 is operated, the operation screen 300E transitions to the operation screen 300T via the operation screen 300F (see FIG. 7B).
On the operation screen 300T shown in FIG. 17(C), a subject image 312 within the imaging field of the camera 35 (see FIG. 3(A)) is displayed on the screen. The subject image 312 here is an image captured independently of the overall image 312A.
On the operation screen 300G shown in FIG. 17D, a button 314 labeled "start measurement" and a button 315 labeled "stop measurement" are displayed on the screen. Here, a button 314 used for instructing the start of measurement is selected.
By operating the button 314, the operation screen 300G transitions to the operation screen 300H (see FIG. 18A).

FIG. 18 is a diagram illustrating a transition example of operation screens when on-site measurements are repeated when the detailed measurement mode is selected. (A) is an operation screen 300H showing that measurement is in progress, (B) is an operation screen 300U displayed immediately after the measurement of two measurement points is completed, and (C) is an operation screen of three measurement points. FIG. 3D is an operation screen 300U displayed immediately after the measurement is finished, and FIG.
In FIG. 18, the parts corresponding to those in FIGS. 7 and 16 are indicated by the reference numerals.

As the number of measurement points increases, the number displayed in the display column 343 for the number of sections that have been measured is also incremented.
Also, in the entire image 312A, the sections for which the vibration data has been measured are colored according to the analysis results. Note that the color of the section is updated each time the analysis result is notified from the analysis server 40 (see FIG. 1).
According to the operation screen 300U shown in FIG. 18(D), it can be seen that there is a high possibility that water leakage has occurred at the 4th to 6th specified measurement points.

In addition, in FIG. 18D, the button 345 used for displaying the detailed analysis result of the measurement point is in the selected state. When the button 345 is operated, the operation screen 300U transitions to the information screen 300X shown in FIG. 19(A). The information screen 300X here is an example of the "screen" in the claims.
FIG. 19 is a diagram illustrating an example of an operation screen used to display detailed analysis results of measurement points. (A) represents the upper part of the screen, and (B) represents the lower part of the screen.
In the information screen 300X shown in FIG. 19A, the slider of the scroll bar 357 is positioned on the upper end side of the screen. Therefore, the upper part of the analysis result page is displayed. Also, in the information screen 300X shown in FIG. 19B, the slider of the scroll bar 357 is positioned at the bottom end of the screen. Therefore, the lower part of the analysis result page is displayed.

The information screen 300X shown in FIGS. 19A and 19B includes a mesh information column 347, a water leakage probability column 348, a diagnostic comment column 349, a measurement data column 350, a measurement date and time column 351, a measurer column 352, and a tag column 353. , an image column 354 and a spectrum column 355 of measurement points are provided.
In addition, on the information screen 300X, a button 356 labeled "set as leakage point", a scroll bar 357, and a button 358 labeled "return" are arranged. When the button 358 is operated, the screen returns to the previous screen.

The mesh information column 347 displays the structure, type, etc. of the used mesh. For example, it is displayed that it is composed of a total of 84 sections of 12 rows and 7 columns.
The water leakage probability column 348 displays the water leakage probability calculated by the analysis server 40 (see FIG. 1). Since the button 356 is in the selected state, "100%" is displayed as the water leakage probability. By the way, even if the measurement point is once set to the leak location, the setting can be canceled when the button 356 is operated again.
The button 356 here is an example of an interface for registering a specific measurement point on the entire image 312A as a leak point.
Note that speech recognition technology may be used to set the location of the leak. Also, a dedicated hardware key may be provided on the device main body 25 or the like for setting the water leakage location.

A simple diagnostic comment notified from the analysis server 40 is displayed in the diagnostic comment field 349 . Here, the fact that the operator has set the leak location is displayed. The fact that the operator has set the leak location is also uploaded to the analysis server 40 and reflected in the database 400 (see FIG. 4).

Various types of information related to acquisition of vibration data are displayed in the measurement data column 350 .
On the information screen 300X, a measurement date column 351, an operator column 352, a tag column 353, a measurement location image column 354, and a spectrum column 355 are displayed in association with the measurement data column 350. FIG.
Information in each column related to the measurement data column 350 is stored in the database 400 in association with the measurement location.
The screen of the image field 354 of the measurement location can also be used to check the measurement location when visiting at a later date.
Note that the spectrum column 355 displays the spectrum of the vibration data. That is, it becomes possible for the operator to visually confirm the characteristics of the vibration data. By displaying the spectrum of the vibration data, it becomes easier to judge whether there is a water leak, compared to the case of distinguishing the vibration data by ear.

FIG. 20 is a diagram illustrating an example of transition of operation screens when ending the detailed measurement mode. (A) shows the operation screen 300U when the end of the measurement is instructed, (B) shows the operation screen 300Y for designating the handling of the measurement result, and (C) shows the operation screen 300Z used to end the detailed measurement mode. indicates
In FIG. 20, parts corresponding to those in FIG. 16 are shown with reference numerals.
In the operation screen 300U shown in FIG. 20A, a button 346 labeled "Return" is in a selected state. In this case, the information terminal 30 recognizes the end of the measurement in the detailed measurement mode.

When the operator operates button 346, operation screen 300U transitions to operation screen 300Y shown in FIG. 20B.
On the operation screen 300Y, a button 359 used for instructing output of a report linked to the first input construction name and a button 360 used for instructing new registration of measurement results are arranged.
Note that the button 359 is labeled "result output". Also, button 360 is labeled "new registration". In the case of FIG. 20B, button 360 is in the selected state.
A button 361 labeled "end" is arranged on the operation screen 300Z shown in FIG. 20(C). A button 361 in FIG. 20C is in a selected state. When the button 361 is operated, the screen returns to the initial screen 300A (see FIG. 14).

<Summary>
In the case of this embodiment, the spectrum of the vibration data measured on site is displayed on the information terminal 30 as the analysis result. Therefore, the worker working on site can visually confirm the difference in the frequency characteristics of the vibration data.
In addition, since the spectrum of the vibration data is displayed, even a worker without so-called craftsmanship can determine the location of the leak with high accuracy.
In addition, by displaying the vibration data spectrum, it becomes easier to share information and pass on skills.

In addition, in the case of the present embodiment, the probability that the measurement point is the leak location is displayed on the screen in characters and colors. In particular, in the detailed measurement mode, the section designated as the measurement point within the mesh 340 is displayed in a color corresponding to the probability that it is the leak point, so the leak point can be easily confirmed at the site.
In addition, since the actual measurement points and the sections in the mesh 340 are linked, it is possible to reduce the deviation between the measurement points on the data and the measurement points on the site. As a result, it is possible to pinpoint the location of the leak even during repair work at a later date.
In addition, in the case of the present embodiment, a button 356 (see FIG. 19) is provided for setting the measurement point corresponding to the information screen 300X (see FIG. 19) as the leak location. You can record the assertion that

<Embodiment 2>
<System configuration>
FIG. 21 is a diagram illustrating a conceptual configuration example of a water leakage inspection system 1A used in the second embodiment. In FIG. 21, parts corresponding to those in FIG. 1 are shown with reference numerals.
A water leakage inspection system 1A shown in FIG. 21 is different from the water leakage detection system 10 (see FIG. 1) described in Embodiment 1 in that the water leakage detection system 10A is composed of a water leakage detector 20 and an apparatus body 250. .

The device main body 250 used in the present embodiment is a device in which the device main body 25 (see FIG. 1) and the information terminal 30 (see FIG. 1) in the first embodiment are integrated.
FIG. 22 is a diagram for explaining an overview of data flow between devices that constitute the water leakage inspection system 1A used in the second embodiment. In FIG. 22, parts corresponding to those in FIG. 2 are shown with reference numerals.

The apparatus body 250 shown in FIG. 22 is composed of a body circuit 25A and an information processing section 25B. The hardware configuration of the information processing section 25B is the same as that of the information terminal 30 shown in FIG. 3A, for example. That is, the information processing unit 25B includes a processor 31 that executes a program necessary for displaying an operation screen to be presented to a worker at the site, a touch panel 34 that is used for displaying the operation screen, and an overall image 312A of the site (FIG. 17A). )), a camera 35 used for imaging a subject image 312 (see FIG. 17(C)) of a measurement location, a communication module 36 used for communication with an analysis server 40, and the like.
The device main body 250 here is an example of a leak test device.

<Embodiment 3>
FIG. 23 is a diagram illustrating a conceptual configuration example of the water leakage inspection system 1B used in the third embodiment. (A) is an example of the external appearance of the water leakage inspection system 1B, and (B) is a diagram for explaining an overview of data flow between devices that constitute the water leakage inspection system 1B. In FIG. 23, parts corresponding to those in FIG. 1 are shown with reference numerals.
A water leakage inspection system 1B shown in FIG. 23 is configured by a water leakage detector 20 and a device main body 260, and the device main body 260 executes vibration data analysis processing. It differs from the detection system 10 (see FIG. 1) and the water leakage detection system 10A (see FIG. 21) described in the second embodiment.

That is, the water leakage inspection system 1B used in this embodiment does not require the analysis server 40 (see FIG. 1).
The apparatus body 260 shown in FIG. 23B is composed of a body circuit 25A and an information processing section 25C. The hardware configuration of the information processing section 25C is the same as that of the information processing section 25B (see FIG. 22) described in the second embodiment.
However, the computing power of the information processing section 25C is much faster than that of the information processing section 25B described in the second embodiment, and has sufficient storage capacity to store measurement data.
In the case of this system configuration, since communication with the analysis server 40 is not required, it is possible to perform water leakage inspection at the measurement point even in the field where the communication state is poor.
The device main body 260 here is an example of a leak test device.

<Other embodiments>
(1) Although the embodiments of the present invention have been described above, the technical scope of the present invention is not limited to the scope described in the above-described embodiments. It is clear from the scope of claims that the technical scope of the present invention includes various modifications and improvements to the above-described embodiment.

(2) In the above-described embodiment, when the button 335 (see FIG. 16A) is operated, the overall image 312A (see FIG. 16) captured by the camera 35 (see FIG. 3) of the information terminal 30 (see FIG. 1) D)) is started, but after the button 335 is operated, the operation screen 300AA for selecting the type of the overall image 312A may be displayed.
FIG. 24 is a diagram illustrating an example of an operation screen used for selecting the type of image to be used as the entire image 312A.

The operation screen 300AA shown in FIG. 24 includes a button 371 labeled "Use image captured by camera", a button 372 labeled "Use map", and "Use piping diagram". , a button 374 labeled "Use aerial photography," a button 375 labeled "Use drone photography," and a button 375 labeled "Stop measurement." A labeled button 376 is provided.
The contents of the labels attached to these buttons 371 to 375 and the number of buttons are examples. When any button is operated, a screen for selecting the corresponding type of image is displayed instead of the operation screen 300S (see FIG. 16B) or the operation screen 300T (see FIG. 16C). .

FIG. 25 is a diagram illustrating a display example of the operation screen 300U when using an aerial photograph of the leak inspection site taken from above, an image taken by a drone, or any similar image as the overall image. In FIG. 25, the parts corresponding to those in FIG.
On the operation screen 300U shown in FIG. 25, a virtual mesh 340 is displayed in an aerial photograph of a site where a plurality of vehicles are parked. The leak probability is displayed in different colors.

(3) In the above-described embodiment, an example of displaying a spectrum as an analysis result of vibration data has been described, but a spectrum may be displayed.
FIG. 26 is a diagram illustrating an example of a spectrum that is an analysis result of vibration data. (A) is an example spectrum when there is no water leakage, (B) is an example spectrum when the possibility of water leakage is suspected, and (C) is an example spectrum when the possibility of water leakage is high.
When there is no water leakage (that is, the case of FIG. 26(A)), the sound pressure levels of all frequencies are low, and no change over time is recognized.

On the other hand, when the possibility of water leakage is suspected (that is, in the case of FIG. 26(B)), an increase in the sound pressure level of the middle and high frequencies is observed, and in particular, the sound pressure level of the middle frequencies increases with the passage of time. A sound pressure level appears. However, the sound pressure level is discrete and likely to be transient noise.
When the possibility of water leakage is high (that is, in the case of FIG. 26(C)), the sound pressure level of middle and high frequencies continues to be high. When this spectrum appears, even an unskilled person can easily determine that the possibility of a leak is extremely high.

(4) In the above-described embodiment, the mesh 340 having the structure given by initial setting is synthesized with the entire image 312A, but the structure of the mesh 340 may be changed by the operator.
FIG. 27 is a diagram illustrating an example of transition of operation screens before and after the structure of the mesh 340 is changed. (A) shows the entire image 312A synthesized with the mesh 340 set by initial setting, (B) shows an example of the screen used to accept changes in the structure of the mesh 340, and (C) shows the mesh after the change. 340 shows the combined overall image 312A.

The operation screen 300U shown in FIG. 27(A) is the same as the operation screen 300U shown in FIG. 16(D). Therefore, a mesh 340 composed of 12 rows and 7 columns of partitions is combined with the overall image 312A.
On the operation screen 300U shown in FIG. 27(B), a screen (hereinafter referred to as "change acceptance screen") 361A used to accept changes in the mesh structure is popped up. A display column 362 indicating the current structure, a display column 363 indicating the structure after change, and a change execution button 364 are arranged on the change acceptance screen 361A.

In the case of the change acceptance screen 361A shown in FIG. 27B, the values of the number of rows and the number of columns after change are input fields. For example, numerical values that can be entered may be displayed outside the column. A display column 363 shows an example of changing to 4 rows and 4 columns.
In the case of the operation screen 300U shown in FIG. 27C, the structure of the mesh 340 combined with the whole image 312A is changed to 4 rows and 4 columns. By using this function, it is possible to freely set the mesh structure according to the site.

Note that the structure of the mesh 340 may be automatically adjusted according to information on the scale of the overall image 312A and the display size of the overall image 312A displayed on the operation screen 300U.
For example, for 1:1 scale and 1:100 scale, the structure of mesh 340 is automatically optimized. If the structure of the mesh 340 is the same, the size of each section in the physical space is greatly different even if the section is the same on the entire image 312A. For example, if one section on the screen corresponds to a range of 20 m×20 m in the real space, it would be difficult to identify the water leakage location in the real space. Therefore, when scale information is available, the structure of the mesh 340 is automatically adjusted according to the scale.

Further, when the display size of the entire image 312A displayed on the operation screen 300U is small, if the mesh 340 is displayed with the same structure as when the display size is large, the visibility of the section may be impaired. In such a case, visibility may be ensured by automatically changing the structure of the mesh 340 synthesized on the screen.

(5) The analysis server 40 (see FIGS. 1 and 21) in Embodiments 1 and 2 described above analyzes vibration data measured on site and records measurement data in a database. In addition to these functions, the operation screens displayed on the information terminal 30 (see FIG. 1) used in the field and the touch panel 34 (see FIG. 3) of the device main body 250 (see FIG. 21) and processing related to transitions between screens are executed. You may
In particular, the analysis server 40 may perform a function of displaying an overall image of the leak inspection site as an operation screen and a function of receiving a specific section of the overall image as a measurement point. In this case, the information terminal 30 and device body 250 used on site are used as information input/output devices. The analysis server 40 having this function is an example of an information processing device that cooperates with a leak inspection device used on site, and is also an example of a computer used for leak inspection.

A server for analyzing vibration data and a server for providing operation screens of the information terminal 30 and the apparatus body 250 used on site may be provided separately.
In other words, a cloud service consisting of a service that analyzes vibration data and a service that manages operation screens and transitions between screens may be realized by a single server, or by linking multiple servers. may be realized.
Incidentally, the server may take any form of hardware as long as it is a computer that provides services to the information terminals 30 used on site.

(6) In the above-described embodiment, the virtual mesh 340 (see FIG. 16(D)) in which each section is defined as a set of squares is directly combined with the overall image 312A (see FIG. 16(D)). An example of displaying
However, when capturing an image of the ground or wall at the leak inspection site, if the imaging range is wide, the plane will be imaged from an oblique direction. For example, FIG. 16B and FIG. 16C show images of a floor surface on which square tiles are spread. there is In other words, the imaging direction of the information terminal 30 is tilted in one axial direction from the direction facing the floor.
Therefore, when synthesizing the mesh 340, the tilt angle is calculated from the subject in the entire image 312A, the mesh 340 is trapezoidally deformed according to the calculated tilt angle, and the deformed mesh 340 is synthesized with the entire image 312A. good. It should be noted that the deformation of mesh 340 may be performed via a manual interface.

1, 1A, 1B... Leak inspection system 10, 10A, 10B... Leak detection system, 20... Water leak detector, 21... Sound listening rod, 23... Vibration sensor, 25, 250, 260... Apparatus body, 25B, 25C... Information processing unit 30... Information terminal 40... Analysis server 400... Database

Claims (6)

A leakage inspection device used by a worker at a site where fluid leakage from piping is inspected,
an acquisition unit that acquires vibration data at a measurement point during inspection work;
a control unit for displaying a spectrum of the vibration data or a spectrum on a screen showing results of real-time analysis of the vibration data;
A leak test device having a The control unit arranges a button on the screen for registering the measurement point being displayed as a leak point.
The leak test device according to claim 1. The control unit displays an image of the measurement point on the screen,
3. The leak test device according to claim 1 or 2. The control unit displays, on the screen, information indicating the probability of leakage occurring at the measurement point.
A leak test device according to any one of claims 1 to 3. The probability is displayed in association with multiple measurements for the same measurement point,
The leak test device according to claim 4. The computer used to check for fluid leaks from piping,
A function to acquire vibration data at a measurement point during inspection work,
A function of displaying the spectrum or the spectrum of the vibration data on a screen showing the result of analyzing the vibration data in real time;
program to make it happen.

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