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WO2018133152A1 - Dispositif et procédé de positionnement de fonction masquée - Google Patents

Dispositif et procédé de positionnement de fonction masquée Download PDF

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Publication number
WO2018133152A1
WO2018133152A1 PCT/CN2017/074139 CN2017074139W WO2018133152A1 WO 2018133152 A1 WO2018133152 A1 WO 2018133152A1 CN 2017074139 W CN2017074139 W CN 2017074139W WO 2018133152 A1 WO2018133152 A1 WO 2018133152A1
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WIPO (PCT)
Prior art keywords
feature
indicator
positioning device
concealed
state
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
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PCT/CN2017/074139
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English (en)
Chinese (zh)
Inventor
蒋洪洲
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Jinhua Maka Technology Co Ltd
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Jinhua Maka Technology Co Ltd
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Publication date
Application filed by Jinhua Maka Technology Co Ltd filed Critical Jinhua Maka Technology Co Ltd
Publication of WO2018133152A1 publication Critical patent/WO2018133152A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
    • G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
    • G01V3/088—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices operating with electric fields
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V11/00—Prospecting or detecting by methods combining techniques covered by two or more of main groups G01V1/00 - G01V9/00

Definitions

  • the invention relates to the field of detection, and in particular to a positioning device and method for concealing features in a medium.
  • the building must be placed under the walls and under the floor with features such as beams, columns, joists and other supporting objects.
  • various wires and metal parts are often placed under the walls and under the floor. Wait. After laying the floor and the wall, it is usually necessary to cut or drill into the support surface for various types of decoration, or to provide openings in the surface, but at the same time, it is necessary to avoid damage to the underlying support objects, wires and pipes. In these cases, the builder often wants to know exactly where the support objects are behind the wall or floor before starting work to avoid cutting or drilling into them.
  • the constructor may also wish to anchor the weight to the concealed support element to ensure the anchorage of the anchorage, in which case the constructor typically desires to align with the underlying support element.
  • Fasteners are mounted on the surface. However, once the surface finishes such as walls and floors are in place, the position of various types of support elements, wires and pipes cannot be detected by the naked eye or the like.
  • Patent Publication No. CN103052894A discloses a method of positioning an object in a medium and a measuring apparatus for performing the method, and the disclosed technical solution requires finding a starting point of the concealed feature by moving the measuring device back and forth on the surface of the measured medium.
  • the width and the full position of the concealed features in the measured medium can be effectively located by manually marking the start and end points of the concealed features on the surface of the medium.
  • the operation is cumbersome and inefficient, and it cannot simultaneously detect and locate the positions of multiple concealed features. And width.
  • the present invention is directed to the problem that the positioning device in the prior art cannot accurately detect and visually display the width and position of the concealed features in the measured medium, and provides a concealed feature positioning device and a positioning method.
  • the specific technical solutions are as follows:
  • the present invention is directed to the problem that the positioning device in the prior art cannot accurately detect and visually display the width and position of the concealed features in the measured medium, and provides a concealed feature positioning device and a positioning method, and the specific method thereof
  • a concealed feature locating device comprising: a detection module for generating a feature signal that varies based on a location of a concealment feature; a controller coupled to the detection module configured to analyze a feature signal to detect a concealment feature; coupled to a plurality of indicators of the controller, the indicator being switchable between a first state and a second state; a displacement sensor coupled to the controller for detecting a displacement of the positioning device; wherein The controller is configured to configure the controller to determine a position of the concealed feature below the positioning device based on the displacement data and to switch one or more of the indicators to the first state such that it is in the first state The indicator identifies the location of the concealed feature.
  • the controller is configured to switch the one or more indicators to a first state when the marked position of the one or more first set of indicators is above the concealed feature, otherwise to switch to the second state And indicating the location where the indicator indicates the presence of the concealed feature, and updating the second set of indicator states based on the displacement data such that the indicator in the first state identifies the location of the concealed feature.
  • the controller is configured to detect displacement data and update the second set of indicator states when the displacement data is greater than or equal to the set value.
  • the second set of indicator status updates when the displacement generated after the first set of indicator switching states is substantially equal to the axial distance of the first set of indicator indicating positions and the second set of indicator indicating positions
  • the axial distance is the projected pitch on the longitudinal axis of the positioning device.
  • the plurality of indicators are arranged axially back and forth along the positioning device, the head or tail indicator being a first set of indicators.
  • the plurality of indicators have substantially equal axial distances.
  • the plurality of indicators have the same pitch.
  • the controller is configured to switch the indicator to a first state when a displacement generated after detecting a starting point of the concealed feature is equal to or greater than a pointer set distance, and generate when a hidden feature end point is detected When the displacement is equal to or greater than the indicator set distance, the indicator is switched to the second state.
  • the indicator setting distance is an axial distance between the indicator marking position and the starting point of the concealing feature when the controller detects the starting point of the concealed feature, the axial distance is in the positioning device The projection pitch on the axis.
  • the displacement sensor comprises a rolling body disposed at the bottom of the positioning device, and a measuring device for measuring and outputting the rolling body rotation data.
  • the displacement sensor is a photoelectric trajectory sensor.
  • the detecting module comprises a capacitance detecting module
  • the capacitance detecting module comprises: at least one sensor board, each sensor board having a capacitance that changes according to the following items: (a) the sensor board and one or more surrounding objects Proximity, (b) a dielectric constant of the surrounding object; a detection circuit coupled to the sensor board, the detection circuit configured to measure a capacitance of the sensor board; the controller configured to analyze the detection circuit Capacitance values to detect hidden features.
  • the sensor board is one.
  • the number of sensor plates is less than or equal to the number of first set of indicators.
  • the sensor board is disposed adjacent to the front and/or rear end of the end of the positioning device.
  • the detecting module comprises a metal detecting module, and the metal detecting module generates a characteristic signal that is changed based on a position different from a concealed feature having a metal substance.
  • the detecting module comprises an alternating current detecting module, and the alternating current detecting module generates a characteristic signal that is changed based on a position different from a hidden feature having alternating current.
  • the detecting module further comprises: generating a metal detecting module based on a characteristic signal that is different from a position of a concealed feature having a metal substance, generating a hidden feature bit based on having an alternating current An alternating current detecting module for differently varying characteristic signals; the positioning device further comprising a mode selecting module, configured to set a controller to select one or more generated features of the analytical capacitance detecting module, the metal detecting module, and the alternating current detecting module Signal to detect hidden features.
  • the invention also provides a positioning method for measuring a concealed feature under the surface of the medium, which adopts a positioning device having a detecting module for generating a corresponding characteristic signal according to different positions of the concealed feature, the positioning device further comprising the first and second states.
  • An indicator for inter-switching the method specifically comprising: measuring a sensed characteristic signal in at least one region, each region corresponding to an area surrounding the at least one detection module; determining a concealed feature in the measurement region based on the measured characteristic signal Positioning, switching one or more indicators corresponding to the position where the measurement area and the concealed feature are stacked from the second state to the first state; and analyzing the displacement of the positioning device on the surface of the measured medium, and according to The displacement updates an indicator state that does not correspond to the detection module area; wherein the indicator of the first state identifies the location between the concealed features.
  • the method updates the displacement of the surface of the measured medium by the positioning device, and updates the status of the indicator that does not correspond to the detection module area when the displacement is greater than or equal to the set value, the indicator update status is
  • the positioning device moves in a direction before a particular indicator state.
  • the present invention also provides another positioning method for measuring the concealed features under the surface of the medium, using a positioning device having a detecting module for generating a corresponding characteristic signal according to different positions of the concealed features, the positioning device further comprising the first and second states An indicator for inter-switching, the method specifically comprising: measuring a sensed characteristic signal in at least one region, each region corresponding to an area surrounding the at least one detection module; determining a concealed feature in the measurement region based on the measured characteristic signal a position, and analyzing the displacement of the positioning device on the surface of the measured medium, and updating the relative position of the concealed feature and the positioning device according to the displacement, corresponding to the position where the positioning device and the concealed feature are stacked
  • the one or more indicators are switched from the second state to the first state; wherein the indicator of the first state identifies a location between the concealed features.
  • the state of the invention can be used to visually observe hidden features by means of a plurality of indicator switching states.
  • the positioning device can be in a fixed position for inspection after detecting the concealed feature, without determining the starting point and the end point of the concealing device by moving back and forth on the surface of the medium like the existing positioning device, and then manually marking the surface of the medium.
  • the positioning device can simultaneously position and width of more than one fuzzy feature, so that the user can better observe and mark the position of the feature.
  • the detection precision of the narrow concealed features can be improved, and the problem that the narrow concealed features cannot be completely displayed in the detection process can be avoided.
  • the detection range of the positioning device in the narrow or surrounding obstacle space can be improved.
  • FIG. 1 is a schematic diagram of a system of a positioning device according to an embodiment of the present invention.
  • FIG. 2 is a schematic diagram of a system of a positioning device according to another embodiment of the present invention.
  • FIG. 3 is a schematic structural diagram of a positioning device according to another embodiment of the present invention.
  • FIG. 4 is a schematic bottom view of a positioning device according to another embodiment of the present invention.
  • Figure 5 is a partial enlarged view of a portion A in Figure 4.
  • FIG. 6 is a schematic view showing the operation of a positioning device according to another embodiment of the present invention.
  • FIG. 7 is a schematic diagram of a use state of a positioning device according to another embodiment of the present invention.
  • FIG. 8 is a schematic diagram of data processing of a positioning device according to another embodiment of the present invention.
  • FIG. 9 is a schematic diagram of a use state of a positioning device according to another embodiment of the present invention.
  • FIG. 10 is a schematic diagram of data processing of a positioning device according to another embodiment of the present invention.
  • FIG. 11 is a schematic diagram of a system of a positioning device according to another embodiment of the present invention.
  • FIG. 12 is a schematic diagram of a use state of a positioning device according to another embodiment of the present invention.
  • FIG. 13 is a schematic diagram of a system of a positioning device according to another embodiment of the present invention.
  • FIG. 14 is a schematic diagram of a system of a positioning device according to another embodiment of the present invention.
  • FIG. 15 is a flowchart of a method for positioning according to another embodiment of the present invention.
  • FIG. 16 is a flowchart of a method for positioning according to another embodiment of the present invention.
  • first and second are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated.
  • features defining “first” and “second” may include one or more of the features either explicitly or implicitly.
  • the meaning of "a plurality” is two or more unless specifically and specifically defined otherwise.
  • the terms “installation”, “connected”, “connected”, “fixed” and the like shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise. , or connected integrally; may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • installation shall be understood broadly, and may be either a fixed connection or a detachable connection, unless explicitly stated and defined otherwise.
  • , or connected integrally may be mechanical connection or electrical connection; may be directly connected, or may be indirectly connected through an intermediate medium, and may be internal communication between the two elements.
  • the specific meanings of the above terms in the present invention can be understood on a case-by-case basis.
  • the first feature “above”, “above” and “above” the second feature includes the first feature directly above or above the second feature, or merely represents, unless otherwise specifically defined and defined.
  • the first feature level is higher than the second feature.
  • the first feature “below”, “below” and “below” the second feature includes the first feature directly below or obliquely below the second feature, or merely indicating that the first feature level is less than the second feature.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • This embodiment provides a positioning device that measures the position and width of concealed features beneath the surface of an object. As shown in FIG. 1, it includes a detecting module 4 that generates a characteristic signal that changes based on a position different from a concealed feature; a controller 11 coupled to the detecting module 4, the controller 11 being configured To analyze the feature signal to detect a covert feature; a plurality of indicators 15 coupled to the controller 11, the indicator 15 being switchable between a first state and a second state; a displacement sensor coupled to the controller 11 14.
  • the displacement sensor 14 is configured to detect displacement data of the positioning device; the controller 11 is configured to: when the one or more of the first set of indicators are above the concealed feature The indicator switches to the first state, otherwise switches to the second state, and updates the second set of indicator states based on the displacement data such that the indicator in the first state identifies the location of the concealed feature.
  • the detecting module includes a sensor board 411 and a detecting circuit 412, each sensor board 411 having a capacitance that varies based on: (a) a sensor board and one or more surrounding objects The proximity, (b) the dielectric constant of the surrounding object; the detection circuit 412 coupled to the sensor board 411, the detection circuit 412 being configured to measure the capacitance of the sensor board 411; the controller 11 is configured To analyze the capacitance value of the detection circuit 412 to detect the concealment feature.
  • the dielectric constant Er of air is 1, while most solid non-conductive materials have a dielectric constant greater than one.
  • the capacitive sensor portion is a single-plate capacitive sensor.
  • the veneer can also form a capacitor with other metal plates or device housings.
  • the detector measures the capacitance of the wall and the air behind it.
  • the detector measures the capacitance of the wall and the support having a higher dielectric constant than air when placed in a position hidden behind a wall with a concealment such as a support. Therefore, the increase in capacitance is recorded by the detector and can then be used to trigger the indicator system.
  • the capacitive sensor of the positioning device adopts a sensor board 411.
  • the sensor board 411 is a copper sheet on the circuit board, and a separate conductive sheet may also be used.
  • the metal sheet may be a copper sheet, an aluminum sheet, an iron sheet, or an alloy sheet, etc., as long as the following functions can be realized, that is, the capacitive sensor board has a capacitance that varies according to the following items: (a) the sensor board and The proximity of one or more surrounding objects, (b) the dielectric constant of the surrounding objects.
  • the indicator 15 is 6 led indicators arranged on the positioning device housing in a line along the axis of the positioning device, and the spacing between the indicators is S, and the LED indicator can be controlled by the controller.
  • the control signal switches between the on and off states.
  • the number of LED indicators provided in this embodiment is only a simple and simple example for subsequent discussion. In practice, the number of LED indicators may be greatly increased according to specific needs, or multiple columns may be arranged in parallel along the positioning device.
  • the axial direction is the longitudinal direction of the positioning device. To improve the display accuracy and measurement range of the width and position of the concealed features of the positioning device.
  • the spacing between the indicators may be different, and all the indicators may not be aligned on the same line.
  • the time interval S may be selected as the projection distance of the indicator on the longitudinal axis of the positioning device, that is, the indication
  • the spacing between the projections of the lamps on the longitudinal axis of the positioning device is the same spacing S, ie the axial distance S, which is the projection spacing on the longitudinal axis of the positioning device, as shown in FIG.
  • the longitudinal axis of the positioning device is the axis of symmetry B in the longitudinal direction of the positioning device.
  • the position of the LED indicator light in this embodiment is the indicator position. In actual situations, some of the indicator lights may only be used to remind the housing of a hidden feature under a certain other position, and the corresponding marked position.
  • the indicator may be marked by other housing markings, etc., when the indicator is lit and indicating its corresponding marking position There may be hidden features in the party.
  • the indicator can also be marked with an integrated liquid crystal display, but the liquid crystal display is also displayed by the combination of each dot matrix, so it can be equivalently regarded as a plurality of indicators, and the implementation principle is similar.
  • the controller 11 is electrically coupled 14 to a displacement sensor 14 for detecting displacement data of the positioning device.
  • the displacement sensor 14 includes a rolling body 141 that moves in synchronism with the positioning device housing structure, a rotating shaft 142 that is coupled to the housing structure, and an angle measuring device for the rolling body.
  • the angle of the rotation of the 141 is measured, at least one of the rolling elements 141 of the present embodiment is provided, and the number and mounting position of the rolling elements 141 can be set as needed, as long as the relevant functions can be realized.
  • three rolling bodies 141 are arranged at three points on the bottom of the housing base, so that the positioning device of the present invention is smooth and stable when moving along the surface of the medium such as a wall. It fits well on the surface of the media.
  • the rolling body 141 of the present embodiment is coupled to the rotating shaft 142 and rotatable relative to the rotating shaft 142, and the housing base is provided with a receiving cavity from the bottom for accommodating the rolling body 141.
  • the angle measuring device is an encoder or a Hall sensor, but is not limited to the two structures.
  • the encoder of the embodiment may be selectively connected to one of the rolling bodies 141, or may be in the same.
  • Encoders are mounted on two or three or all of the rolling bodies 141, and the displacement data error generated by the individual encoders is eliminated by comparing the displacement data outputted by the encoders, thereby providing measurement accuracy, and also by other existing
  • the processing algorithm processes the displacement data combination values of the three encoders to provide displacement measurement accuracy, and can also calculate the displacement amount of the positioning device offset symmetry axis B direction movement according to the data difference values of the latter two rolling bodies 141, thereby passing the correlation algorithm. The amount of displacement generated by the symmetry axis B direction of the positioning device can be obtained more accurately.
  • This embodiment adopts a rolling body 141 equipped with an encoder mounted as a displacement sensor 14, which is mounted on the bottom of the housing structure of the positioning device, and the amount of rotation of the rolling body 141 is exposed to the housing base when the positioning device is When the surface of the object moves, the amount of rotation forms a line or point contact with the surface of the object to be tested, and the rolling contact can adapt to the uneven surface of the object, so that the contact between the positioning device and the object is stable, and it is convenient to bypass the attachment.
  • the bottom of the positioning device is lifted due to the unevenness of the surface of the object to be tested, or the size of the positioning device
  • the increase of the bottom plane does not fit well or adapt to the curvature of the surface of the measured medium, resulting in
  • the size of the air gap between the bottom part and the object to be tested increases and is uneven, which affects the capacitance value generated by the sensor board, thereby affecting the detection accuracy.
  • the conventional positioning device often requires the handheld device to move unsupported on the surface of the medium, or directly aligns the bottom surface of the device with the measured medium, such movement will be caused by the shaking of the constructor's hand and the unevenness of the surface of the measured medium.
  • the interference causes the gap between the positioning device and the surface of the medium to change, thereby affecting the detection accuracy of the positioning device.
  • the bottom rolling body used in this embodiment supports the positioning device to move on the surface of the interface to be tested. problem.
  • the positioning device sets the indicator light a1 of the head of the led indicator queue as the first group of indicators, and the remaining indicators a2-a6 are the second group of indicators, and the sensor board is disposed on the indicator a1.
  • the controller is configured to switch the one or more led indicators to a lighting state when one or more of the first set of led indicators are above the concealed feature, otherwise switch to a closed state and according to the displacement
  • the data updates the second set of led indicator states such that the indicator in the illuminated state accurately identifies the location and width of the concealed feature.
  • the width of the concealed feature can be detected intuitively by the lighting state of the indicator lights a1-a6, and the position of the concealed feature under the surface of the measured medium can be displayed.
  • the positioning device can check at a fixed position after detecting the concealed feature, without determining the width of the concealing device by moving back and forth on the surface of the medium like the existing positioning device, and the positioning device can simultaneously locate more than one.
  • the position and width of the blurred features allow the user to better observe and mark the position of the feature.
  • the device completes the continuation preservation confirmation of the identification position of the characteristic signal according to the cooperation of the displacement sensor and the plurality of indicators, so that the identification and location preservation of the concealed features of the wide area can be obtained by virtue of a small number of detection modules,
  • the fixing and display save the equipment cost and simplify the circuit structure, and avoid the problems of structural complexity and signal interference caused by too many detecting modules.
  • the embodiment further includes a power module 16 for turning off and providing power to the system of the positioning device to ensure normal operation of the positioning device.
  • the detection circuit 13 can be implemented using the AD7147 from Analog Devices.
  • the controller 11 can be implemented by the controller CY8C21534 from Cypress Semiconductor.
  • the positioning device also includes a display circuit that transmits signals from the controller 11 to the indicator 15 that can be executed using the MM74F1C164 shift register from Fairchild Semiconductor.
  • the display circuit transmits signals from the controller 11 to the indicator 15, which may include LEDs arranged in parallel rows along the back of the upper housing, the indicator 15 further comprising a power controller, the power control
  • the device uses the MC33375 integrated circuit from On Semi.
  • FIG. 6 is a preferred working process of the present embodiment for performing concealed feature measurement, as follows:
  • step S11 when the positioning device generates displacement in the medium to be tested, it is determined whether the increment of the capacitance value of the sensor board is greater than or equal to the threshold value 1, if yes, step S12 is performed, otherwise step S13 is performed.
  • the capacitance data of the detection circuit 13 received by the controller 11 will become larger, but since the positioning device 1 is not yet under test.
  • the displacement sensor will not detect the displacement data. Because the roller at the bottom of the positioning device does not rotate, the displacement will not be detected. Therefore, the displacement data detected by the displacement sensor 14 does not change, so it can be judged that The instrument is close to the surface of the medium 2 to be tested.
  • the concealed feature 3 within the medium is only detected when the positioning device 1 begins to move over the surface of the medium to be tested.
  • the controller 11 After the power is turned on, the controller 11 receives the displacement data detected by the displacement sensor. When the displacement data is greater than 0, it begins to judge the capacitance value of the sensor board 411 sent from the detection circuit 11. In this embodiment, the controller 11 compares the capacitance value increase amount with the rising threshold C stored in the internal memory, and if it is greater than or equal to the internal storage rising threshold C, performs step S12, otherwise performs step S13.
  • the capacitance detected by the sensor board does not change.
  • the sensor board only measures the capacitance of the wall and the air behind it.
  • the detection circuit converts the capacitance value of the sensor board into an electrical signal and sends it to the controller.
  • the controller compares the increase in the capacitance value to be smaller than the internal storage rise valve.
  • the value C does not signal any state switching to the indicator a1.
  • the first indicator light corresponding to the sensor board maintains its original state, that is, it is turned off.
  • the controller 11 when the positioning device 1 is moved to the position 1, since the detected concealed feature 3 gradually approaches the sensor board 411, the capacitance value of the sensor board 411 measured by the detecting circuit 412 gradually becomes larger, when the controller 11 finds the location When the capacitance increase amount exceeds the threshold value C, the controller transmits a control signal for switching to the first state, that is, the lighting state in the present embodiment, to the indicator lamp a1, and the indicator lamp a1 is turned on.
  • the positioning device continues to move from position 1 to position 2.
  • the distance S is the axial distance between the two indicator lights.
  • the axial distance is the distance between the projections of the indicator lights on the longitudinal axis of the positioning device
  • the longitudinal axis of the positioning device is the axis of symmetry B in the longitudinal direction of the positioning device.
  • the controller 11 reads the state of the indicator lights a1-a5 at this time, and uses them as the update status of the indicator lights a2-a6, respectively, and sends the update state control signals to the indicator lights a2-a6 for state switching.
  • each indicator light (lighting or extinguishing) is transmitted backward one bit, that is, the indicator light a6 replaces the state of the indicator light a5, the indicator light a5 replaces the state of the indicator light a4, and the indicator light a4 replaces the state of the indicator light a3.
  • the indicator a3 replaces the state of the indicator a2, and the indicator a2 replaces the state of the indicator a1.
  • the indicator light a1 corresponding to the sensor board does not receive the state switching signal of the controller 11, and still maintains the original state, that is, the lighted state.
  • the controller 11 reads the state of the indicator lights a1 - a5 at this time again, and As the update status of the indicator lights a2-a6, respectively, the update status control signals are sent to the indicator lights a2-a6 for status switching.
  • the first group indicator corresponding to the sensor board outputs a control signal that is switched to the second state.
  • the controller 11 finds the capacitance value When the amount of decrease exceeds the falling threshold d, the controller sends a control signal to the indicator a1 to switch to the first state, that is, the off state, and the indicator lamp a1 is turned off.
  • the rising threshold C can be a fixed value or can be changed according to environmental conditions.
  • the rising threshold C can be appropriately increased, and the input button can be configured by the positioning device.
  • Manual setting can also detect only the noise value in the instrument itself, that is, when there is no hidden feature detected, and when there are specific hidden features, test to obtain the relevant capacitance. The values are then compared to set the rise threshold C.
  • the descent threshold d may also be a fixed value, or may be manually set by configuring an input button to the positioning device according to environmental conditions, or may be changed according to the value of a value. When the value of a is larger, the d value may be appropriately increased.
  • the threshold e is set according to the value of a and the value of f.
  • the threshold e is between f and (f+a).
  • the capacitance is less than the value of e, the indicator is extinguished.
  • the f value is not measured.
  • the positioning method further comprises the following steps:
  • the detector 11 detects the displacement data of the sensor plate with a reduced capacitance value but does not simultaneously generate displacement from the positioning device 1 at the displacement sensor 14, and it can be assumed that the positioning device 1 has started to detach from the surface of the measured medium, and the controller 11 is all
  • the indicator 15 outputs a control signal that is switched to the second state, and in this embodiment, the indicator lamps a1-a6 are turned off.
  • This step can remind the user of the positioning device that the positioning device has left the surface of the medium, and can avoid the characteristic signal generated by the detecting module from being undetected by the user from the surface of the interface to be detected, so that the detecting module generates an error. Affecting the accuracy and accuracy of the detection of the concealed features, such that the indicator 15 displays the erroneous concealed feature position and error.
  • the axial distances between the indicator lights are different.
  • the controller is configured to set the second set of indicators when the displacement generated after the first set of indicator switching states is substantially equal to the axial distance of the first set of indicator indicating positions and the second set of indicator indicating positions
  • the status update is the state of the first set of indicator switches, the axial distance being the projected pitch on the longitudinal axis of the positioning device.
  • the internal memory of the controller stores the distance between the marked position of the second group of indicators and the position indicated by an indicator of the first group of indicators.
  • the position of the indicator light is set to the position below.
  • a1 is the first group of indicators
  • a2-a4 is the second group of indicators.
  • the axial distance between a1 and a2 is X
  • the axial distance between a2 and a3 is 2.5X
  • the axial distance between a3 and a4 is 4.5X.
  • the state of the indicator light a4 is switched to the state of a1 in the recording.
  • the above-mentioned displacement amount switching condition may also be substantially equal to the correlation distance, that is, slightly larger or smaller than the line. At this time, only the switching time of the related indicator light is delayed or delayed, and a slight error is generated.
  • the displacement amount at which the positioning device starts at the same time is also recorded and the state corresponding to the lamp a1 at this time is recorded, and the second group of indicators a2-a4 is recorded. A similar status update operation is performed at the same time.
  • the width of the concealed feature 3 can be detected intuitively by the lighting state of the indicator lights a1-a6, and the position of the concealed feature under the surface of the measured medium 2 can be displayed.
  • the positioning device can check at a fixed position after detecting the concealed feature, without determining the width of the concealing device by moving back and forth on the surface of the medium like the existing positioning device, and the positioning device can simultaneously locate more than one.
  • the position and width of the blurred features allow the user to better observe and mark the position of the feature.
  • the positioning device by recording the displacement data, the relative position of the detected concealed feature and the positioning device in the movement of the positioning device is continuously predicted, thereby controlling the display state of the indicator corresponding to the concealed feature position.
  • This allows the positioning device to achieve a visual display of the position and width of the large size concealed features by means of a detection module having only a small detection area.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • This embodiment provides another positioning device that measures the position and width of the concealed features beneath the surface of the object.
  • it includes a detecting module 4 that generates a characteristic signal that changes based on a position different from a concealed feature; a controller 11 coupled to the detecting module 4, the controller 11 being configured To analyze the feature signal to detect a covert feature; a plurality of indicators 15 coupled to the controller 11, the indicator 15 being switchable between a first state and a second state; a displacement sensor coupled to the controller 11 14.
  • the displacement sensor 14 is configured to detect a displacement of the positioning device; the controller 11 is configured to display the indicator when a displacement generated after detecting a starting point of the concealed feature is equal to or greater than an indicator setting distance Switching to the first state, when the displacement generated after detecting the end point of the concealed feature is equal to or greater than the indicator set distance, switching the indicator to the second state, so that the indicator identifier in the first state is The location of the concealed feature.
  • the detection module of the embodiment also includes a sensor board 411 and a check Circuit 412.
  • the manner in which the controller finds the concealed feature under the measured medium according to the characteristic signal generated by the detecting module based on the difference of the position of the concealed feature is similar to the principle in the first embodiment, and is not detailed here. Discussed.
  • the set internal distance corresponding to each indicator is stored in the internal memory of the controller 11.
  • the set distance is set when the positioning device is initialized, and can also be selected and input through the input module of the positioning device.
  • the controller When the positioning device moves on the surface of the measured medium, when detecting the starting point of the hidden feature, the controller starts recording the displacement amount of the positioning device, and when the controller finds that the displacement amount is equal to or greater than a certain indicator in the internal memory of the controller The indicator is switched to the first state when the corresponding set distance stored in the middle is one. The positioning device continues to move forward at the same time. When the end point of the concealed feature is detected, the controller starts to record the displacement amount of the positioning device at the beginning of the second time. When the controller finds that the displacement amount is equal to or greater than a certain indicator is under control. When the corresponding set distance stored in the internal memory of the device is two, the indicator is switched to the second state. An indicator in the first state and a location identifying the concealed feature.
  • the positioning device is displayed by the state of the plurality of indicators, and can be inspected at a fixed position after detecting the concealed feature, without determining the starting point of the concealing device by moving back and forth on the surface of the medium like the existing positioning device.
  • the end point determines its width
  • the positioning device is capable of simultaneously locating the position and width of more than one fuzzy feature, thereby allowing the user to better observe and mark the position of the feature.
  • the positioning device of the embodiment is more flexible in the arrangement of the position of the indicator, and does not need to be corresponding to the detecting module as in the first embodiment, and the detection precision is good.
  • the internal memory of the controller 11 stores the initial position of the concealed feature under the positioning device that can be recognized by the detection module to the position of each indicator when the positioning device is moving.
  • An axial distance which is the projected distance on the longitudinal axis of the positioning device. That is, when the controller detects the starting point of the concealed feature, the indicator indicates the axial distance of the position from the starting point of the concealed feature. This distance can be initially set by detecting concealed features of known locations.
  • the setting of the set distance enables the indicators of the positioning device to switch to the edge of the hidden feature for a first time, so that the positioning accuracy of the positioning device is well ensured.
  • the sensor board 411 is disposed close to the front end and/or the rear end of the positioning device, so that the positioning device accommodates a larger detection distance, and can detect and widen the concealed features. knowledge.
  • the width of the concealed feature can also be detected intuitively by the plurality of indicator states, and the position of the concealed feature below the surface of the measured medium can be displayed.
  • the positioning device can check at a fixed position after detecting the concealed feature, without determining the width of the concealing device by moving back and forth on the surface of the medium like the existing positioning device, and the positioning device can simultaneously locate more than one.
  • the position and width of the blurred features allow the user to better observe and mark the position of the feature.
  • the relative position of the detected concealed feature and the positioning device in the movement of the positioning device is continuously predicted, thereby controlling the display state of the indicator corresponding to the concealed feature position. This allows the positioning device to achieve a visual display of the position and width of the large size concealed features by means of a detection module having only a small detection area.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • the present embodiment is a change based on the first and second embodiments, and the same or similar parts in the two embodiments are not repeatedly discussed. Only the different portions will be described in detail below.
  • the positioning device disclosed in this embodiment sets the indicators a1 and a2 located at the front of the indicator queue as the first group of indicators, and the remaining indicators a3-a6 are the second group of indicators.
  • the sensor board 411 is disposed in the positioning device housing below the indicator lights a1, a2. The rest of the structure is basically similar to that of the first embodiment.
  • the positioning device is placed on the surface of the medium to be tested, and the positioning device is turned on.
  • the positioning device is moved along the longitudinal axis B of the positioning device on the surface of the object to be tested.
  • the sensor board capacitance measured by the detecting circuit will also become larger and larger, reaching the position 1, when the capacitance value increases beyond the rising valve
  • the indicator a1 is activated.
  • the capacitance increase amount reaches the maximum value or approaches the maximum value a, the position indicator 2 is reached, and the indicator light a2 is activated.
  • the capacitance value of the sensor board 411 measured by the detecting circuit 11 is also smaller and smaller, reaching the position 3, and when the capacitance value decreasing amount exceeds the falling threshold d, the indicator light a1 is turned off.
  • the capacitance value reduction amount reaches the maximum value or approaches the maximum value b, the indicator lamp a2 is turned off.
  • the second group of indicator lights are controlled in the same manner as in the first embodiment.
  • the second group of indicator states are updated by determining whether the displacement of the positioning device is greater than or equal to the corresponding set value, and will not be discussed here.
  • the lighting state of the lamps a1-a6 can intuitively detect the width of the concealed feature and can display the position of the concealed feature under the surface of the measured medium.
  • the state of the first set of indicators can also be controlled by calculating the sensor board capacitance value measured by the detection circuit. That is, when the capacitance of the capacitor is less than the threshold e1, the extinguishing indicator a1 is turned off. When the capacitance of the capacitor is less than the threshold e2, the extinguishing indicator a2 is extinguished, and the threshold e2 and the threshold e1 may be based on the value of a and the value of f.
  • the thresholds e1, e2 are set to be between the values f and (f+a). Where e2 is less than the e1 value.
  • the f value is a sensor board capacitance value on the measured object in the absence of the detected concealment feature, and the a value is an increased maximum capacitance value on the sensor board measured when the sensor board is above the concealed feature.
  • the detection precision of the concealed feature with narrow width is improved by using one sensor board corresponding to the two indicator lights, and the concealing feature caused by the sensor board corresponding to only one indicator light in the first embodiment can be well solved.
  • the width is too narrow, so that the first group of indicators switches state before the second group of indicators has not completed the state update, so that the second group of indicators has a status update omission, thereby causing problems of detection error and detection accuracy degradation.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • this embodiment discloses another positioning device.
  • the positioning device described in this embodiment has the same composition as that of the first embodiment, and similar parts are not described.
  • the dissimilar parts are detailed below. It is described that the positioning device of the embodiment includes indicators that are arranged in a row along the axis of the positioning device and are arranged on the positioning device housing. The distance between the indicators is S, and the indicator lights are respectively associated with the controller. Electrically connected, the controller can individually control the lighting and off of each indicator.
  • the capacitive sensor disclosed in this embodiment is three sensor boards 411, and the indicator lights a1, a4, and a7 located at the head are set as the first group of indicators, and the remaining indicators are set to Two sets of indicator lights are disposed in the positioning device housing below the indicator lights a1, a4 and a7.
  • the displacement sensor 14 is composed of a roller mounted with a magnetic column and a Hall sensor, and the Hall sensor can output a signal according to a relative change of the position of the magnetic column, and the roller is mounted on the positioning device. At the bottom of the casing, the part of the roller is exposed to the surface of the object to be tested. When the positioning device moves on the surface of the object, the roller is rotated to drive the magnetic column to rotate with the roller, and the Hall sensor can output the angular displacement of the roller according to the position of the magnetic column. The signal is sent to the controller, and the controller calculates the displacement distance of the positioning device according to the rotation angle signal and the circumference of the roller surface.
  • the Hall sensor can employ a non-contact three-dimensional Hall sensor MLX90363 with an accurate output signal.
  • the sliding friction that moves the existing positioning device on the surface of the object is converted into rolling friction, which also improves the movement comfort of the positioning device on the surface of the object to be tested.
  • the displacement sensor can also employ an optical trajectory sensor.
  • the optical trajectory sensor is mounted on the bottom of the positioning device, and the measuring light of the optical trajectory sensor is emitted to the surface of the measured medium through the opening at the bottom, and the displacement data is obtained by the digital signal processor inside the optical trajectory sensor for the image of the reflected light image. And sent to the controller 11.
  • the optical track sensor can be an existing optical mouse sensor package, such as an Agilent ADNS-2610 optical mouse sensor.
  • the controller 11 is configured to switch the one or more indicator lights to a lighted state when one or more of the first set of indicators are above the concealed feature, otherwise to a closed state, and based on the displacement data
  • the second set of indicator states is updated such that the indicator in the first state identifies the location of the concealed feature.
  • the detection range of the positioning device in a narrow space can be improved, as described in the first embodiment.
  • the positioning device described in this embodiment will have a larger detection range of concealed features, and is more suitable for obstacles in a narrow or four-sided obstacle. Use in a mobile environment. Similarly, the more sensor boards are used, the lower the requirements for the movable space.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the positioning device disclosed in this embodiment includes a metal detecting module 42, a displacement sensor 14, an indicator 15 and a controller 11, and the metal detecting module 42 generates a position based on a hidden feature that is different from the metal-containing substance. And a varying characteristic signal; a controller 11 coupled to the metal detection module 411, the controller being configured to analyze the feature signal to detect the concealment feature.
  • Metal detection mode Block 42 includes a metal sensor 421, an oscillator 422, a DC voltage converter 423, and a D/A module 424 that sends a control signal to the D/A module to adjust the voltage of the D/A module output to the oscillator 422.
  • the state calibration may be selected.
  • the digital-to-analog conversion device is adjusted so that the voltage output from the DC voltage conversion device is approximately between 1/3 and 1/2 of the power supply voltage, and the value of the digital-to-analog conversion device is recorded.
  • the coil is close to the metal object, due to the electromagnetic induction phenomenon, an eddy current is generated in the metal conductor, so that the energy loss in the oscillation circuit is increased, so that the oscillation is weakened or even stopped.
  • the DC voltage converter 423 detects this change and outputs a different voltage value, that is, converts the oscillation strength of the oscillator into a voltage output.
  • the controller 11 determines whether or not a metal object exists by detecting a voltage change output from the DC voltage converter 423. That is, the larger the metal object contained in the concealed feature, the closer the distance from the detector coil, the more the oscillation decreases, and the output voltage decreases.
  • the metal sensor 421 can be implemented by a coil distributed on a circuit board.
  • the oscillator 422 uses a feedback type LC oscillator with an oscillation frequency of about 200 kHz, and the oscillation strength can pass through the digital mode.
  • the conversion device adjusts, and the intensity of the oscillation directly affects the sensitivity of the detection metal. That is to say, the sensitivity of the detection metal can be adjusted by adjusting the output voltage of the digital-to-analog conversion device.
  • the D/A module 424 can be controlled by the controller 11, can be composed of a digital to analog conversion chip, or can be implemented by PWM.
  • the controller 11 is configured to switch the one or more indicators to a lighting state when one or more of the first group of indicators 15 are located above a concealed feature containing a metal material, otherwise switch to a closed state And updating the second set of indicator states based on the displacement data such that the indicator in the first state identifies the location of the concealed feature.
  • the arrangement of the metal sensor 421 of the present embodiment in the positioning device is the same as that of the capacitive sensor plate in the foregoing embodiments.
  • the manner in which the metal detecting module 411 detects the concealed features of the metal-containing material and the manner in which the controller 11 controls the first and second sets of indicators are substantially the same as those in the first embodiment, and the description thereof will not be repeated here.
  • the detecting module 411 of the positioning device can adopt an alternating current sensor, and can generate a characteristic signal that changes according to the position of the concealed feature containing the alternating current.
  • the alternating current sensor is prior art, and is not here. More specifically described.
  • the detecting module used in the positioning device disclosed in the above various embodiments whether it is a metal sensor, a capacitive sensor or an alternating current measuring sensor, the signal sent back by the feedback object or the detected object is converted into a detected signal of the controller.
  • the judging method is similar to the positioning device using the capacitive sensor in the previous embodiments, but the size of the capacitor is changed. The size of other signals, such as voltage and so on.
  • the principle of the above embodiment is to generate a characteristic signal that is changed based on the position of the hidden feature by the detecting module, and determine the starting point and the ending point of the measured object, the displacement sensor records the displacement information of the measured object, and records the position information of the measured object, and passes the The indicator indicates the width and position information of the concealed feature.
  • the embodiment discloses a positioning device, comprising: a detecting module, the detecting module generates a characteristic signal that is changed based on a position different from a concealed feature; a controller coupled to the detecting module, the controller is configured to analyze Feature signals to detect concealment features; a plurality of indicators coupled to the controller, the indicators being switchable between a first state and a second state; a displacement sensor coupled to the controller, the displacement sensor Detecting displacement data of the positioning device; the controller being configured to switch the one or more indicators to a first state when one or more of the first set of indicators are above the concealed feature, otherwise Switching to the second state and updating the second set of indicator states based on the displacement data such that the indicator in the first state identifies the location of the concealed feature.
  • the detecting module includes a capacitor detecting module, a metal detecting module 42 and an alternating current detecting module 43 .
  • the capacitor detecting module includes a detecting circuit 412 and a sensor board 411 , and the specific connecting manner and the embodiment thereof
  • the metal detecting module 42 includes a DC voltage converter, an oscillator, a metal sensor, and a D/A module, and the specific connection mode and other modules of the displacement sensor operate in a similar manner to the foregoing embodiments. This is no longer discussed.
  • the sensor board of the capacitance detecting module, the metal sensor of the metal detecting module 42 and the sensing component of the alternating current detecting module 43 may be arranged in parallel along the axial direction of the positioning device with the first group of sensors in the indicator 15, each detecting The modules can all operate independently in the operational state, generating a characteristic signal that varies based on the location of the concealed feature corresponding to its corresponding detection type, such that the controller 11 can detect the concealed feature by analyzing the feature signal and when one of the first set of indicators Or multiple above the hidden feature The one or more indicators are switched to the first state.
  • the controller 11 can configure each of the detection modules to be sequentially converted in time series, that is, time-sharing operation.
  • the preferred controller 11 can rely on the internal timer to read the capacitance of the capacitance detection module by using 20 ms.
  • the value data, the metal measurement value data of the metal detection module 42 is read in the next 10 ms, and the AC measurement data of the AC detection module 43 is read in the next 10 ms, and the loops are sequentially cycled to detect various types of concealed features to realize the detection type range. Maximization solves the problem that the positioning devices of various different types of detection concealment features of the prior art are separate devices.
  • the positioning device further includes a mode selection module 17, and the mode selection module 17 is connected to the controller 11 for selecting a detection module used by the positioning device according to a user's selection, and the controller 11
  • One or more of the capacitance detecting module, the metal detecting module or the alternating current detecting module may be selected according to the selection signal input by the mode selection module. That is, the user can select the detection function of the positioning device through the button of the mode selection module, for example, can be grouped by a button, such as alternating current detection and metal detection as a group, and the capacitance detection is used as a group, and the group is selected according to the state of the button.
  • the modules in each group work according to time sharing.
  • the detection and recognition capability of the positioning device for various concealed features is greatly improved, and the mode selection method can select different detection modules and combinations thereof for detection at any time during the detection process, according to different
  • the feedback of the detection module to the hidden medium can accurately determine the type of concealed features under the medium to facilitate subsequent construction.
  • this embodiment discloses a positioning method for measuring concealed features under the surface of a medium.
  • the method adopts a positioning device having a detecting module that generates a corresponding characteristic signal according to different positions of the concealed features, and the specific steps include:
  • the indicator update state is a previous indicator state of the positioning device moving direction.
  • the method includes analyzing a displacement of the positioning device on the surface of the measured medium, and updating an indicator state that does not correspond to the detection module area when the displacement is greater than or equal to the set value, the indicator update status A specific indicator state for the positioning device in the direction of movement.
  • the method obtains the characteristic signal position of the region by measuring the characteristic signal of the partial region, and at the same time, completes the continuation preservation confirmation of the identification position of the characteristic signal according to the cooperation of the displacement amount and the plurality of indicators, so that the credential moves the small-range detection region.
  • the identification and location preservation, fixation and display of concealed features for a wide range of areas can be obtained, and the width and position of the concealed features can be visually and clearly displayed.
  • Overcoming the existing methods can only be identified by the movement of the detection area plus manual marking. The cumbersome operational problems of concealing feature width and position.
  • the embodiment discloses another positioning method for measuring concealed features on the surface of the medium, and adopts a positioning device having a detecting module that generates corresponding characteristic signals according to different positions of the concealed features, the positioning device. Also included are indicators that can be switched between the first and second states, specifically:
  • the one or more indicators corresponding to the location where the positioning device is located and the location of the concealed features are switched from the second state to the first state; wherein the indicator of the first state identifies the location between the concealed features.
  • the method obtains the characteristic signal position of the region by measuring the characteristic signal of the partial region, and at the same time, the tracking of the hidden feature position is completed according to the displacement data, and is controlled above the hidden feature position.
  • the indicator is used to identify the position, so that the credential moves the small-range detection area to obtain the identification and location preservation, fixation and display of the concealed features of the wide-area area, and the width and position of the concealed feature are visually and clearly displayed, overcoming the present There are ways to identify the cumbersome operational problems of concealed feature width and position only by manually marking the movement of the detection area.

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Abstract

L'invention concerne un dispositif de positionnement de fonction masquée et un procédé de positionnement consistant à utiliser ledit dispositif de positionnement pour détecter une fonction masquée. Le dispositif comprend : un module de détection (4) utilisé pour générer un signal de fonction variant sur la base de différentes positions d'une fonction masquée ; un organe de commande (11) couplé au module de détection (4) et configuré pour analyser le signal de fonction pour détecter la fonction masquée ; et un capteur de déplacement (14) couplé à l'organe de commande (11) et utilisé pour détecter des données de déplacement du dispositif de positionnement. L'organe de commande (11) est configuré pour déterminer, selon les données de déplacement, une position de la fonction masquée au-dessous du dispositif de positionnement et pour commuter un ou plusieurs indicateurs (15) sur un premier état, de sorte que les indicateurs (15) dans le premier état marquent la position de la fonction masquée. La présente invention permet, au moyen de l'état des indicateurs (15), qu'un utilisateur observe directement une largeur de la fonction masquée et affiche la position de la fonction masquée sous une surface d'un support à l'essai.
PCT/CN2017/074139 2017-01-23 2017-02-20 Dispositif et procédé de positionnement de fonction masquée Ceased WO2018133152A1 (fr)

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