CN220730680U - MES traceability system based on RFID - Google Patents

Abstract

The utility model relates to the technical field of radio frequency identification, in particular to an RFID-based MES traceability system, which comprises a PLC (programmable logic controller) and an upper computer, wherein an information input module is electrically connected with the upper computer, a tag writing module is respectively electrically connected with the PLC and the upper computer, an information acquisition module is respectively electrically connected with the PCL and the upper computer, a repair code input module is electrically connected with the PCL and the upper computer, a part information acquisition module is electrically connected with the upper computer, a key station information acquisition module is electrically connected with the upper computer, and a tag clearing module is respectively electrically connected with the PLC and the upper computer. Each key station and component can be accurately tracked and recorded, helping to identify and address potential quality issues.

Description

MES traceability system based on RFID

Technical Field

The utility model relates to the technical field of radio frequency identification, in particular to an MES traceability system based on RFID.

Background

The production informatization management system (MES) plays a key role in the workshop execution layer of a manufacturing enterprise, and helps the enterprise to improve the manufacturing efficiency and management efficiency by providing a set of management modules, including manufacturing data management, planning scheduling management, production scheduling management, inventory management, quality management and the like. However, existing MES systems have some limitations in information collection. Bar code data acquisition technology is usually adopted, so that the data acquisition speed is low, errors are easy to occur, and the whole-course tracking of products in workshops cannot be realized. In addition, because the existing information acquisition method is limited, the manufacturing enterprises have difficulty in tracking the specific position and state of the product in the whole production flow. This may lead to quality problems or production delays, difficulty in determining the source of the problem, and limited capacity of barcode entry data, and insufficient recording of detailed information of the product, such as process parameters, production time, etc., which is important for quality management and traceability.

Disclosure of Invention

The utility model provides an RFID-based MES tracing system, which aims to solve the problems that in the prior art, the specific position and state of a product in a production flow are difficult to track due to the adoption of bar code input in an MES system and the capacity of bar code input data is limited.

The utility model is realized by the following technical scheme:

the utility model provides a MES traceability system based on RFID, includes main control system and MES system, the MES system includes product information entry module, label write-in module, information acquisition module, repair code entry module, part information acquisition module, key station information acquisition module and label clear away the module, main control system includes PLC controller and host computer, the host computer is connected to the PLC controller electricity, the information entry module electricity is connected the host computer, the PLC controller and the host computer are connected to the label write-in module electricity respectively, PCL controller and the host computer are connected to the information acquisition module electricity respectively, PCL controller and the host computer are connected to repair code entry module electricity, the host computer is connected to part information acquisition module electricity, the host computer is connected to key station information acquisition module electricity, PLC controller and the host computer are connected to the label clear away the module electricity respectively.

Further, the information input module comprises a first industrial tablet computer which is connected with the upper computer in a wireless mode.

Further, the tag writing module comprises a first RFID gateway and a first RFID reader, wherein the first RFID reader is connected with the first RFID gateway through an industrial bus, and the first RFID gateway is respectively and electrically connected with the PLC controller and the upper computer.

Further, the information acquisition module comprises an automatic station quality acquisition module and a manual station quality acquisition module, and the automatic station quality acquisition module and the manual station quality acquisition module are respectively and electrically connected with the PLC.

Further, the automatic station quality acquisition module and the manual station quality acquisition module both comprise a second RFID gateway and a second RFID reader-writer, the second RFID reader-writer is connected with the second RFID gateway through an industrial bus, the second RFID gateway is respectively and electrically connected with a PLC controller and an upper computer, and the PLC controller is respectively connected with quality detection equipment.

Further, the repair code input module comprises a third RFID gateway, a third RFID reader-writer and a third industrial tablet computer, wherein the third RFID reader-writer is connected with the third RFID gateway through an industrial bus, and the third RFID gateway is respectively and electrically connected with the PLC controller, the upper computer and the third industrial tablet computer.

Further, the part information acquisition module comprises a two-dimensional code scanning gun, a camera and a second industrial tablet computer, wherein the two-dimensional code scanning gun and the camera are respectively and electrically connected with the second industrial tablet computer, and the second industrial tablet computer is electrically connected with the upper computer.

Further, the key station information acquisition module comprises fingerprint identification equipment and a fourth industrial tablet computer, wherein the fingerprint identification equipment is electrically connected with the fourth industrial tablet computer, and the fourth industrial tablet computer is electrically connected with the upper computer.

Further, the tag cleaning module comprises a fourth RFID gateway and a fourth RFID reader, wherein the fourth RFID reader is connected with the fourth RFID gateway through an industrial bus, and the fourth RFID gateway is respectively and electrically connected with the PLC controller and the upper computer.

The utility model has the beneficial effects that:

(1) According to the utility model, an RFID technology is introduced, so that automatic information acquisition and label writing are realized, and the speed and accuracy of data acquisition are greatly improved;

(2) The utility model realizes the whole-course tracking of the product in the whole production process by the RFID technology. Each key station and each part can be accurately tracked and recorded, and potential quality problems can be identified and solved;

(3) The RFID tag identification system has the multi-tag identification capability, can simultaneously identify a plurality of RFID tags without being limited by information capacity, and allows a system to store more detailed product information, including process parameters, production time and the like;

(4) The automatic station quality acquisition module introduced with the RFID technology is beneficial to capturing quality data in time, improves the efficiency of quality management, and can more conveniently record and track the repair condition of the product;

(5) The utility model realizes the cooperative work among all modules through the integration of the PLC, the industrial tablet personal computer and the upper computer, and provides a more advanced production informationized management solution for manufacturing enterprises.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the description of the embodiments will be briefly described below, it will be apparent that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a system block diagram of an RFID-based MES traceability system according to an embodiment of the present utility model;

FIG. 2 is a flowchart illustrating an RFID-based MES traceability system according to an embodiment of the present utility model.

Detailed Description

For the purpose of making apparent the objects, technical solutions and advantages of the present utility model, the present utility model will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present utility model and the descriptions thereof are for illustrating the present utility model only and are not to be construed as limiting the present utility model.

Example 1

The embodiment provides a structural mode of an MES traceability system based on RFID.

Referring to fig. 1, an MES tracing system based on RFID includes a main control system and an MES system, the MES system includes a product information input module, a tag writing module, an information acquisition module, a repair code input module, a part information acquisition module, a key station information acquisition module and a tag clearing module, the main control system includes a PLC controller and an upper computer, the PLC controller is electrically connected with the upper computer, the information input module is electrically connected with the upper computer, the tag writing module is electrically connected with the PLC controller and the upper computer respectively, the information acquisition module is electrically connected with the PCL controller and the upper computer respectively, the repair code input module is electrically connected with the PCL controller and the upper computer, the part information acquisition module is electrically connected with the upper computer, the key station information acquisition module is electrically connected with the upper computer, and the tag clearing module is electrically connected with the PLC controller and the upper computer respectively;

the industrial tablet personal computer model adopts an industrial grade 18.5 inch high definition TFT liquid crystal screen, 50,000 hours LED backlight service life, intel fourth generation Rui 3-4010U/i7-4650U processor, 4GB/8GB DDR3L memory, 16:9 wide screen, projected capacitive multi-point touch screen, color LED indicator lamp display operation state, shell grounding protection, HDMI interface and audio multimedia transmission support, and the device is mainly used for field data processing and man-machine interaction;

the RFID gateway is used for networking and I/O control of RFID equipment in the using process, and specific parameters are as follows:

supply voltage range: an 18V to 30V dc power supply;

the power supply mode is as follows: supporting independent dual power supplies, one for the system and one for the load;

and (3) a power interface: using a 7/8 needle hole seat or a 5 needle seat;

and (3) power protection: the device has reverse connection protection and 1500W surge protection functions so as to protect the device;

communication interface: the system has double network ports and a switch function, and accords with the IEEE 802.3 standard;

communication topology: support star structures and tree structures;

communication cable length: up to 100 meters;

communication interface: adopting an M12-4 pinhole connector;

I/O ports: providing 8 channels to support the self-adaptive function;

I/O frequency: the frequency of the switching value input/output signal is not more than 250Hz;

I/O current: the maximum output current of the switching value per channel is not more than 0.7A;

RFID port: an RFID interface having 4 channels;

RFID power supply: support isolation of 24VDC power, maximum current not exceeding 80mA; also supporting non-isolated designs, the maximum current does not exceed 1A;

RFID communication: adopting RS485 communication, isolating, wherein the communication distance is 50M at maximum, and using an M12-5 pinhole connector;

RFID communication rate: the communication rate is 115200bps;

RFID carries sign indicating number body: the maximum supported capacity does not exceed 2K Bytes;

environmental suitability: the working temperature ranges from-25 ℃ to +75 ℃, and the storage temperature ranges from-40 ℃ to +85 ℃; the relative humidity is suitable for indoor environment, the range is from 5% to 95%, RH-2 level is achieved, and condensation is not generated; the anti-corrosion gas accords with IEC60068-2-42/43 standard, the vibration resistance accords with EN61131 standard, and the maximum vibration resistance is 20 g; the protection grade reaches IP67, and has good dustproof and waterproof performances.

The PLC is used for all logic control and data acquisition of production line data acquisition, and specific parameters are as follows:

the system has high-speed signal processing speed, shortens the response time of the system and improves the production efficiency;

the novel backboard bus technology with high baud rate and high-efficiency transmission protocol is adopted to realize the rapid processing of signals;

3 PROFINET interfaces are provided, wherein two ports have the same IP address and are suitable for field-level communication, and the third port has an independent IP address;

response time can be defined through PROFINET IRT technology, and high accuracy of equipment performance is ensured;

the PLC has an integrated Web server function, can remotely check the CPU state through an Internet browser, graphically displays the process variable, supports user-defined webpages, and simplifies information acquisition operation.

The upper computer is an RFID server;

the RFID reader-writer is used for identifying TAG data of the tray RFID in the production process, and specific parameters are as follows:

wireless protocol: an ISO-15693 protocol is adopted;

operating frequency: operating at 13.56MHz frequency;

output power: an output power of 23 dBm;

radio rate: supporting a wireless data transmission rate of 26.5 kbit/s;

reading and writing distance: can carry out read-write communication with the tag within the range of 0 to 150 mm;

communication interface: support RS232, RS-485 and POE (Power over Ethernet) communication interfaces;

communication rate: the communication rate can reach 115200bit/s or 10/100M;

supply voltage: the working power supply voltage range is 18V to 30V direct current;

indication lamp: the device has 2 LED indicator lights;

external dimensions: the external dimension of the equipment is 90mm multiplied by 94.9mm multiplied by 40mm;

the weight of the whole machine is as follows: the weight of the equipment is 0.33kg;

type of fixation: the device is provided with 4 fixing holes, and can be fixedly installed by using nuts;

shell material: the shell is made of PC+ABS material;

operating temperature: the applicable working temperature ranges from-25 ℃ to +70 ℃;

storage temperature: the applicable storage temperature range is-25 ℃ to +85 ℃;

humidity: the applicable humidity range is 5% to 95% (no condensation);

waterproof and dustproof grade: the waterproof and dustproof performance of IP67 level is achieved;

vibration resistance: and the vibration resistance accords with GB/T2423.10-2008/IEC 60068-2-6:1995 standard.

The scanning gun is used for scanning the two-dimensional code of the cylinder body in the process of part information acquisition and line body conversion, and the specific parameters are as follows:

and (3) a power supply: supporting a host power range of 4.5VDC to 5.5VDC and an external power range of 11.4VDC to 12.6VDC;

the supported host interface: including USB, RS232 and Keyboard edge;

a battery: the device is provided with 3100mAh rechargeable lithium battery;

user indicator: the device has the functions of direct decoding indicator, LED, buzzer and vibration;

number of scans: more than 70,000 scans can be performed after full charge;

illumination: the device is equipped with two white LEDs;

scanner field of view: the horizontal field of view is 31 °, and the vertical field of view is 23 °;

an image sensor: an image sensor having 1280 x 960 pixels;

minimum print contrast: support scanning of 15% of the lowest reflectance difference;

yaw/pitch/roll angle: the deflection angle is +/-60 degrees, the pitch angle is +/-60 degrees, and the rolling angle is +/-360 degrees;

decoding capability: support decoding of 1D and 2D codes, including Code 39, code 128, PDF417, QR Code, etc.;

use environment: the applicable working temperature range is-4 degrees F to 122 degrees F, the storage temperature range is-40 degrees F to 158 degrees F, and the humidity range is 5% to 95%;

drop specification: can bear the impact of falling to the concrete ground from the height of 8.0 feet (2.4 meters) for many times;

waterproof and dustproof grade: the scanner has waterproof and dustproof performances of IP65 and IP67 levels;

and (3) wireless connection: bluetooth Class 1 Bluetooth wireless is supported, and the data rate can reach 3 Mbit/s.

In this embodiment, the products to be detected are provided with RFID tags in an adaptive manner, the tags are used for marking on the tray, and the model and sequence data are written into the tags, and specific parameters are as follows:

wireless protocol: an ISO-15693 protocol is adopted;

operating frequency: operating at 13.56MHz frequency;

radio rate: supporting a wireless data transmission rate of 26.48 kbit/s;

reading and writing distance: capable of communicating with the antenna and the reader-writer in the range of 0 to 70 mm;

memory type: adopting an EEPROM type memory with the capacity of 112 bytes;

working mode: support readable and writable data storage and access;

data retention time: the data storage time is longer than 10 years;

number of repeatable erasures: support more than 10 ten thousand times of data erasure;

metallic resistance: non-metal resistant or metal resistant versions may be selected as desired;

external dimensions: providing a plurality of size options, including 20/24/30/35/50mm, etc.;

thickness: the thickness range is 2.5mm to 3.3mm, the back adhesive and the wave absorbing material are not included, and the thickness of specific sizes and types is different;

type of fixation: the support screw or the adhesive mode is used for fixing and mounting;

shell material: the shell is made of engineering plastics, and part of material technology can be customized according to requirements;

operating temperature: the applicable working temperature ranges from-25 ℃ to +85 ℃;

storage temperature: the applicable storage temperature range of the conventional product is-40 ℃ to +85 ℃, and the high temperature resistance can reach-40 ℃ to +150 ℃ in a customized way;

waterproof and dustproof grade: the waterproof and dustproof performance of the IP68 level is achieved, and the waterproof and dustproof performance can be read underwater.

The fingerprint identification equipment is used for collecting key personnel information and is used for realizing personnel information tracing.

The connection relation of the respective devices will be described in the following embodiments:

information input module (first industrial tablet computer): the first industrial tablet computer communicates with the host computer via a wireless connection or a wired connection (e.g., wi-Fi or other wired communication standard). Such communication may be bi-directional, allowing data to be transferred from the tablet to the host computer, or from the host computer to the tablet.

Tag write module (first RFID gateway and first RFID reader): the first RFID reader is coupled to the first RFID gateway via an industrial bus (e.g., ethernet or other industrial bus protocol). This connection allows the first RFID reader to communicate with the PLC controller and the host computer through the gateway. In general, the RFID reader writes information on the RFID tag through the gateway, and simultaneously transmits the read information to the PLC controller and the upper computer.

Information acquisition module (automatic station quality acquisition module and manual station quality acquisition module): the modules are connected with a second RFID gateway through an industrial bus (such as Ethernet or other industrial bus protocols), the connection allows the second RFID reader to communicate with a PLC controller and an upper computer through the gateway respectively, the PLC controller is connected with quality detection equipment respectively, and the quality detection equipment comprises a tightening machine.

Repair code entry module (third RFID gateway, third RFID reader, and third industrial tablet): the third RFID reader is connected to the third RFID gateway through the industrial bus. The third RFID gateway is responsible for connecting the PLC controller, the upper computer and the third industrial tablet computer. The module is used for inputting a repair code and transmitting data to the PLC, the upper computer and the third industrial tablet personal computer.

Part information acquisition module (two-dimensional code scanning gun, camera and second industry panel computer): the two-dimensional code scanning gun and the camera are connected to the second industrial tablet computer through cables. The second industrial tablet computer is connected to the upper computer through a cable. These devices are used to collect part information and then transmit the data to the host computer.

Key station information acquisition module (fingerprint identification equipment and fourth industry tablet computer): the fingerprint identification device is connected to a fourth industrial tablet computer through a cable. The fourth industrial tablet computer is connected to the upper computer through a cable. The module is used for collecting information of key stations and then transmitting data to an upper computer.

Label clearing module (fourth RFID gateway and fourth RFID reader): the fourth RFID reader-writer is connected to a fourth RFID gateway through an industrial bus, and the gateway is responsible for connecting the PLC controller and the upper computer. This module is used to clear the information on the RFID tag.

It should be noted that the manner of connection and operation may vary depending on the model, communication protocol and manufacturer of the particular hardware device. Therefore, in practical applications, detailed design and configuration are required according to the selected hardware device. Furthermore, the co-operation of these devices typically requires the writing of control logic, which is a necessary factor in the implementation of the operation of the hardware device, but this does not involve software improvements, and can be configured on a hardware controller (e.g., PLC).

Example 2

The embodiment provides a workflow of an MES traceability system based on RFID on the basis of the embodiment 1.

Referring to FIG. 2, the workflow of the RFID-based MES traceability system is as follows:

in this embodiment, take a certain production line as an example, all transport through the tray to the equipment that this production line detected, and the purpose is in order to make things convenient for the product displacement to different modules to go out and realize detecting.

And (5) loading the workpiece at a working position: an operator inputs the current product model by using a first industrial tablet personal computer, the first industrial tablet personal computer transmits data to an upper computer, the upper computer automatically generates a serial number, model information and workpiece serial number information are written into a TAG label of an attached product, namely an RFID label, and a first RFID reader-writer and a first RFID gateway are used.

Automatic station quality acquisition point: after the pallet reaches the quality acquisition point of the automatic station, the second RFID reader-writer reads the model number information in the TAG, the second RFID gateway transmits data to the PLC controller, the automatic station is switched by the detection equipment through the digital I/O port, the quality information (torque, angle, qualification/disqualification) is extracted after the equipment finishes working, and the quality information and the serial number are associated and stored in the upper computer server.

Manual station quality acquisition point: after the pallet reaches the quality acquisition point of the manual station, the second RFID reader-writer reads the model number information in the TAG, the second RFID gateway transmits data to the PLC, the manual station is switched by the detection equipment through the digital I/O port, the quality information (torque, angle, rotating speed, qualification/disqualification) is extracted after the equipment finishes working, and the quality information and the serial number are stored in the upper computer server in a correlated way.

Repair point: the pallet reaches a repairing point, the TAG information is read by a third RFID reader-writer, the serial number, the product model and the NG information are automatically displayed on a man-machine interface of a repairing station, and an operator carries out maintenance according to the displayed NG information.

According to the maintenance process, a plurality of maintenance items and codes are defined, maintenance codes are input after maintenance personnel complete maintenance, the maintenance codes are automatically associated with the serial numbers, and the maintenance codes are transmitted to an upper computer through a third RFID gateway and recorded in a data server.

Part information acquisition station: the tray enters a part information acquisition station, and part information (including manufacturers, batches, model numbers and the like) is read through a two-dimensional code scanning gun or a camera. The read part information is associated with the serial number and is transmitted to the upper computer through the second industrial tablet personal computer and stored in the server.

Key stations: the pallet enters a key station, and an operator inputs the information of the operator at the key station, namely, the information passes through fingerprint identification equipment.

And verifying the identity of an operator through a fourth industrial tablet personal computer, wherein only appointed personnel can operate at the station.

And (3) product transfer: the product is transferred through the hanging chain from in-cylinder line to cylinder body line, cylinder body line to decorative line, and TAG shifts simultaneously with the product, and the TAG is placed at tray fixed position, shifts TAG and product together when the product shifts.

And (5) line-down point: the tray reaches the drop-out point.

And the fourth RFID reader reads workpiece information recorded by the TAG, the product serial number acquired by the scanning gun on site is associated with the RFID information, and the information is uploaded to an upper computer through a fourth RFID gateway and stored in a server, and meanwhile, the TAG information is cleared.

The pallet returns to the loading station and the next cycle begins.

The system workflow combines different hardware modules for realizing data recording, quality control, repair and product tracing in the production process. Each hardware module plays a key role in a specific station, and high efficiency and traceability of the production process are ensured.

The foregoing has shown and described the basic principles and main features of the present utility model and advantages of the present utility model; it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims; the scope of the utility model is defined by the appended claims and equivalents thereof.

Claims (9)

1. The utility model provides a MES traceability system based on RFID, includes main control system and MES system, its characterized in that, the MES system includes product information input module, label write-in module, information acquisition module, repair code input module, part information acquisition module, key station information acquisition module and label clear module, main control system includes PLC controller and host computer, the host computer is connected to the PLC controller electricity, the information input module is connected the host computer electricity, PLC controller and host computer are connected to the label write-in module electricity respectively, PCL controller and host computer are connected to the information acquisition module electricity respectively, repair code input module is connected PCL controller and host computer, the host computer is connected to part information acquisition module electricity, the host computer is connected to key station information acquisition module electricity, PLC controller and host computer are connected to the label clear module electricity respectively.

2. The RFID-based MES tracing system of claim 1, wherein the information entry module comprises a first industrial tablet computer, the first industrial tablet computer being wirelessly connected to a host computer.

3. The system of claim 1, wherein the tag writing module comprises a first RFID gateway and a first RFID reader, the first RFID reader is connected to the first RFID gateway through an industrial bus, and the first RFID gateway is electrically connected to the PLC controller and the host computer, respectively.

4. The RFID-based MES tracing system of claim 1, wherein the information acquisition module includes an automatic station quality acquisition module and a manual station quality acquisition module, each of which is electrically connected to the PLC controller.

5. The system according to claim 4, wherein the automatic station quality acquisition module and the manual station quality acquisition module each comprise a second RFID gateway and a second RFID reader, the second RFID reader is connected with the second RFID gateway through an industrial bus, the second RFID gateway is respectively and electrically connected with a PLC controller and an upper computer, and the PLC controller is respectively connected with the quality detection device.

6. The MES traceability system based on RFID according to claim 1, wherein the rework code input module includes a third RFID gateway, a third RFID reader and a third industrial tablet computer, the third RFID reader is connected to the third RFID gateway through an industrial bus, and the third RFID gateway is electrically connected to the PLC controller, the upper computer and the third industrial tablet computer, respectively.

7. The system of claim 1, wherein the part information collection module comprises a two-dimensional code scanning gun, a camera and a second industrial tablet computer, the two-dimensional code scanning gun and the camera are respectively and electrically connected with the second industrial tablet computer, and the second industrial tablet computer is electrically connected with the upper computer.

8. The RFID-based MES tracing system according to claim 1, wherein the key station information collection module includes a fingerprint identification device and a fourth industrial tablet computer, the fingerprint identification device is electrically connected to the fourth industrial tablet computer, and the fourth industrial tablet computer is electrically connected to the upper computer.

9. The system of claim 1, wherein the tag removal module comprises a fourth RFID gateway and a fourth RFID reader, the fourth RFID reader is connected to the fourth RFID gateway through an industrial bus, and the fourth RFID gateway is electrically connected to the PLC controller and the host computer, respectively.