CN102819758B - System and method for improving read-write success rate of radio frequency identification tags on movement production line - Google Patents

Abstract

A system and method for improving the success rate of RFID reading and writing of radio frequency tags on a moving production line. It is composed of four terminals of detection, error correction control and security protection. These four different terminals, which are composed of computers, RFID and automatic control technologies, and the production management application server respectively perform their own set tasks and cooperate closely. On the production line, the functions of accurate identification, multiple writing, verification and information protection, and automatic sorting of failed tags are realized for the data in the RFID tag, which significantly improves the success rate of reading and writing of RFID tag data on the moving production line, optimizes production efficiency, and realizes Intelligent management of the production line. Therefore, the present invention has a very good application prospect in modern industrial production lines.

Description

System and method for improving the success rate of reading and writing radio frequency tags on a motion production line

technical field

The invention relates to an application technology of radio frequency tags on a production line, in particular to a system and method for improving the success rate of reading and writing of radio frequency tags on a moving production line, and belongs to the technical field of the Internet of Things and computers.

Background technique

Radio frequency tag RFID (Radio Frequency IDentification) is an electronic tag based on radio frequency identification technology, which can identify specific targets through radio signals and read and write related data without establishing mechanical or optical contact between the identification system and specific targets.

With the improvement of the level of science and technology, in order to maintain the high efficiency and accuracy of production, the automation degree of the production line of manufacturing enterprises is getting higher and higher. However, in the entire production process, there are still a large number of manual identification or manual statistics. This production mode not only increases the cost of the enterprise, but also cannot control the error rate of manual operations well.

At present, people are paying more and more attention to refined production methods, and RFID technology has begun to be introduced in the production process of some large-scale manufacturing enterprises. The RFID system uses the wireless network as the information channel, through wireless transmission and real-time processing, allows various mainstream management systems to discover key information from it, and realizes automatic identification and real-time management of products in production. As a mobile carrier of production data, RFID tags flow on the production line, which can realize real-time and accurate statistics of various information including operators, procedures, workpieces and working hours during the production process, and also realize real-time control and quality management for products during the production process. Traceability provides the technical basis.

As early as 2004, some international organizations proposed an RFID-based application architecture for the manufacturing field. For example, international IT giants such as IBM, SAP, Microsoft, QAD, and SSA have all launched integration solutions for RFID and enterprise resource planning (ERP) systems. However, at present, domestic RFID technology has not been widely used in the field of manufacturing. This is firstly due to the high cost of RFID tags, which limits the popularization of RFID technology; secondly, due to the inherent defects of RFID technology, the success rate of RFID tag data being read correctly is usually only 60-70% in a moving production line. These two factors have become the biggest obstacle and bottleneck restricting the large-scale application of RFID tags in industrial production.

With the continuous development of new technologies, some enterprises and scientific and technological personnel have carried out research and development on the application projects of radio frequency identification, intelligent processing and other related technologies in the production field, and have made progress and applied for patents. According to the search results of domestic patent public databases and some online resources, there are related patent applications for integrating RFID tags into the production process, or applying them to various links in production, or bundling applications with other components, including "Based on RFID and barcode fusion" Refined production system and production method" (application number: 200910104791.1), "production monitoring system based on radio frequency identification" (application number: 200910163789.1) and "a real-time data acquisition system for industrial production lines" (application number: 200920054140.1) etc., although these patent applications are all focused on how to automatically track the production process in real time by using radio frequency identification technology on the production line, so as to achieve the purpose of intelligent management of production and improvement of efficiency. However, how to ensure that the RFID tag data can be read and written accurately and completely during the production process, that is, how to improve the success rate of reading and writing of the RFID tags used on the production line, has not yet been involved.

Contents of the invention

In view of this, the object of the present invention is to provide a system and method for improving the success rate of reading and writing of radio frequency tags on a moving production line. The present invention utilizes technologies such as computer, RFID, and automatic control to form various terminals of the system and production management application servers to perform their own set tasks and closely cooperate with each other to realize accurate identification, multiple Functions such as writing, verification and information protection, and automatic sorting failure information. The invention can significantly improve the success rate of reading and writing of RFID tag data on a moving production line, optimize production efficiency, and realize intelligent management of the production line.

In order to achieve the above object, the present invention provides a system for improving the success rate of RFID reading and writing of radio frequency tags on a moving production line, which is characterized in that the system consists of a production management application server, and communicates with the production line via a wired network and/or a wireless network. The management application server is composed of four terminals respectively connected to the read-write control, data detection, error correction control and security protection. Through these different terminals and the production management application server, they perform their respective set tasks and cooperate closely to improve the motion production line. The success rate of reading and writing of RFID tags; where,

The production management application server, as the control center of the system, is responsible for supporting and managing the coordinated operation of all devices in the system, specifically including: managing the network topology, parameter configuration, application services and interface communication of the system, managing and updating various information in the database in real time. Class business data resources, receive, process, store, display and statistically analyze the data transmitted from each terminal data collection point, and issue real-time control instructions for abnormal states; support, manage and control business flow and data in the production process Stream, intelligently analyze and make decisions on various data resources and business processing processes; manage and control the read-write control terminal and data detection terminal, realize the inspection of RFID tags and data read-write and verify the data in RFID tags; also manage And control error correction control terminal and safety protection terminal, realize positioning and data error correction for abnormal RFID tags, and realize final verification and write protection for RFID tags on the motion production line, and manage tag status; with business database, intelligent analysis 1, data processing flow control, business management and system management three units and two interfaces of data service and data operation; the business data stored in the business database includes: system users, product attributes, terminal equipment, production line identification, RFID tag product data , authentication results, user login, various events and log information;

The read-write control terminal is composed of a computer running the read-write control program, an RFID reader and its antenna, and is used to select the RFID tag group in the reading range on the motion production line, and start the tag identification cycle, based on the unique identification UID (Unique Identifier) To check the validity of RFID tags and read and write product data; the written product data includes at least: product name, place of origin, manufacturer, brand, grade, production date, batch number, assembly line and operator number ; and establish the association between the tag UID and the product data;

The data detection terminal is composed of a computer running a data detection program, an RFID reader and its antenna, responsible for data detection and verification of the RFID tags processed by the read-write control terminal on the motion production line, identifying errors and triggering error correction control process and upload it to the production management application server;

The error correction control terminal is composed of a computer running an error correction control program, an RFID reader and its antenna, and is responsible for precisely locating the wrong RFID tags found by the data detection terminal, and judging the error type of the wrong RFID tag, and then accurately, Complete product data is appended to the RFID tag;

The safety protection terminal is composed of a computer running a safety protection program, an RFID reader-writer and its antenna, and a sorting device. It is responsible for the final product data verification of the RFID tags on the motion production line, and completes the status management of the tags, including : Write-protect the tags that pass the verification, and perform failure sorting on the tags that fail the verification.

In order to achieve the above object, the present invention also provides a working method of the system that improves the success rate of reading and writing of radio frequency tags on the motion production line, it is characterized in that, comprises the following operation steps:

(1) The read-write control terminal first writes the product data into the RFID tag on the production line to realize the association between the tag UID and the product data;

(2) The application server issues control instructions for verifying tag data to the data detection terminal;

(3) The data detection terminal screens, filters and verifies the product data in the RFID tags on the production line. If the product data is accurate and complete, then jump to step (5); otherwise, that is, the data has defects, then execute the subsequent step (4);

(4) The error correction control terminal performs data error correction or data rewriting on labels with defective product data;

(5) The security protection terminal verifies the overwritten label product data, and if the overwritten data is successful, then perform the subsequent step (6); otherwise, perform an alarm prompt and sorting process, and then return to step (2);

(6) The security protection terminal changes the readable and writable state of the RFID tag with complete and accurate product data to a read-only state to realize the protection of product data.

The advantages of the system for improving the success rate of reading and writing of radio frequency tags on the motion production line of the present invention are:

Through careful calculation and reasonable space planning, different terminals in the system are distributed and arranged around the product production line, and then each terminal is divided to expand the reading angle of the label; and the reading cycle of the label is set, which realizes Synchronous control of each terminal, and effectively reduce data conflicts and interference between terminals, between terminals and labels, and between labels in the same identification area, improve the identification and processing capabilities of multiple labels and complete the screening and filtering of original data. On the basis of not affecting the original production progress, the correct collection, verification, writing and protection of product data are realized during the product production process to ensure that the data acquired by the system is accurate and complete. In addition, the multi-write verification set by the system of the present invention reduces the missed reading and reading and writing errors of product data in the production process, realizes the effective verification of tag data, and greatly improves the success rate of writing RFID tag data. The statistics of the final state realize the optimization of production efficiency and save the production cost for the enterprise. It should be noted that the various terminals in the system of the present invention must be evenly arranged outside the production line, and in order to ensure effective deployment, the horizontal and vertical distances between the terminals depend on the reading and writing speed of information and the running speed of the production line. Moreover, the horizontal distance between each terminal and the production line is kept between 1 and 1.5m, ensuring that it is within the normal reading and writing range of the label.

The business innovation point of the present invention is: based on the automatic identification and automatic control technology, the system of the present invention combines the technical characteristics of the existing production line to realize the automatic collaborative processing of each process on the motion production line; through multiple verification and writing of RFID tag data, greatly Improve the success rate of reading and writing of RFID tag data in the production process and save production costs. Due to the fully automated detection realized on the production line, it not only improves the efficiency of label processing, but also reduces errors caused by manual operations. Furthermore, various terminals are reasonably deployed in the surrounding space of the production line, which can not only expand the reading angle of labels and improve the accuracy of label reading, but also realize automatic sorting of failed labels and improve production efficiency. In addition, the working method of the system can carry out real-time statistics on production data, and optimize the operation efficiency of the production line through performance analysis.

The innovative technology of the present invention is: by rationally optimizing and setting various terminals (including their antenna layout and transmission power, etc.), the reading range and ability of the terminal are automatically replenished, so as to eliminate the radiation blind area of each terminal reading and improve its reading range. Read and write success rate of RFID tags. The present invention optimizes and sets the self-adaptive scanning time of each terminal, reasonably controls its scanning frequency, and reduces the miss-reading rate of the terminal to the RFID label on the running production line; it also adopts automatic error correction and data compensation technology to complete the correction of the data in the RFID label To a certain extent, it improves the success rate of reading and writing of RFID tag data on the sports production line. The invention establishes a set of automatic and efficient product quality control system, utilizes the RFID label error correction control terminal of the production line to supervise the production process of the product in real time, automatically identifies defective products and automatically sorts them out or gives an alarm.

In addition, the present invention also provides a management mechanism for product information security protection, using a security protection terminal to perform security writing protection on the labels of ex-factory products, so as to effectively prevent the label information from being tampered with or stolen, and improve the anti-counterfeiting capability of the product. Also through the dynamic inspection and real-time monitoring of each terminal in the system, it can ensure that each terminal on the motion production line is in a correct, stable and reliable working state, and avoid the impact of equipment failure on the correctness of RFID tags.

Description of drawings

Fig. 1 is a system structure diagram for improving the success rate of reading and writing of RFID tags on the motion production line of the present invention.

Fig. 2 is a schematic diagram of the composition and structure of the production management application server in the system of the present invention.

Fig. 3 is a schematic diagram of the composition of the read-write control terminal in the system of the present invention.

Fig. 4 is a schematic diagram of the structure and composition of the data detection terminal in the system of the present invention.

Fig. 5 is a schematic diagram of the structure and composition of the error correction control terminal in the system of the present invention.

Fig. 6 is a schematic diagram of the structure and composition of the security protection terminal in the system of the present invention.

Fig. 7 is a flow chart of the operating steps of the system working method for improving the success rate of reading and writing of RFID tags on the motion production line of the present invention.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings.

Referring to Fig. 1, introduce the structural composition of the system that the present invention improves radio frequency tag RFID reading and writing success rate on motion production line: this system is provided with production management application server, and via wired network and/or wireless network and this production management application server respectively Connected four terminals of read-write control, data detection, error correction control and security protection; through these different terminals and the production management application server respectively perform their own set tasks and cooperate closely to improve the success of reading and writing RFID tags on the motion production line Rate. in:

The production management application server, as the control center of the system, is responsible for supporting and managing the coordinated operation of all devices in the system: managing the network topology, parameter configuration, application services and interface communication of the system, managing and updating various businesses in the database in real time Data resources, receive, process, store, display and statistically analyze the data transmitted from each terminal data collection point, and issue real-time control instructions for abnormal states; support, manage and control the business flow and data flow in the production process, Carry out intelligent analysis and decision-making on various data resources and business processing procedures; manage and control the read-write control terminal and data detection terminal, realize the inspection of RFID tags and data read-write and verify the data in RFID tags; also manage and control Error correction control terminal and safety protection terminal, realize positioning and data error correction for abnormal RFID tags, and realize final verification and write protection of RFID tags on the motion production line, and manage tag status; there is a business database, intelligent analysis, data Process flow control and business management and system management three units and two interfaces of data service and data operation. The business database is used to store various business data related to the operation of the system, including at least: system users, product attributes, terminal equipment, production line identification, RFID tag product data, verification results, user login, various events and logs and other information.

The read-write control terminal is composed of a computer running the read-write control program, an RFID reader and its antenna, and is used to select the RFID tag group in the reading range on the motion production line, and start the tag identification cycle, based on the unique identification UID (Unique Identifier) Analyze and process RFID tags and product data, as well as perform validity detection and read and write product data; collect UID information of RFID tags on the production line in real time, and store product data in the server (including at least: product name) , origin, manufacturer, brand, grade, production date, batch number, assembly line and operator number, etc.) are processed and written into the label; and the association between the label UID and product data is established.

The data detection terminal is composed of a computer running a data detection program, an RFID reader and its antenna, responsible for data detection and verification of the RFID tags processed by the read-write control terminal on the motion production line, identifying errors and triggering error correction control process and upload it to the application server.

The error correction control terminal is composed of a computer running an error correction control program, an RFID reader and its antenna, and is responsible for precisely locating the wrong RFID tag found by the data detection terminal, and judging the error type of the wrong RFID tag, eliminating the redundancy in the tag If there is any surplus or wrong data, then write the accurate and complete product data to the RFID tag.

The safety protection terminal is composed of a computer running a safety protection program, an RFID reader-writer and its antenna, and a sorting device. It is responsible for the final product data verification of the RFID tags on the motion production line, and completes the final state management of the tags: The tags that pass the verification are write-protected, and the tags that fail the verification are sorted by failure.

The system of the present invention takes the product data in the radio frequency tag RFID as the center, and provides five functions including terminal synchronization control, terminal status and label validity monitoring, data collection and writing, data verification and writing, data protection and sorting, among which :

Terminal synchronous control is to synchronously manage the working states of the four terminals deployed on the motion production line, including read-write control, data detection, error correction control and security protection, and control the label recognition cycle of each terminal according to the production line running speed and terminal reading range , to control the start and end time of each terminal identification label; in order to reduce the average time of label identification and reduce the conflict between terminals and between terminals and labels.

Terminal status and label validity monitoring is based on the registration information of each terminal stored by the production management application server. After the system is started, the identity information and operating status information regularly reported by each terminal are matched and verified, and the status control data of each terminal is intelligently analyzed. , to determine its operating status to ensure reliable, stable and continuous data transmission between each terminal on the production line and the RFID tag; at the same time, the read-write control terminal and the data detection terminal respectively respond to the data read-write request according to the tag group within their reading range The feedback results are used to judge the validity of the label and realize the validity monitoring of the label.

Data collection and writing is in each reading cycle. The read-write control terminal sends data read-write instructions to the tag group within the reading range according to the set time, and analyzes and determines the tag according to the sensed tag signal strength and distance relationship. coordinates, locate and read the RFID tag; and under the control of the production management application server, write product data into the RFID tag; when the read-write control terminal completes the data writing of each tag, it sends the data detection through the production management application server The terminal sends a request to start the data detection service, and the application server uses the UID of the tag as an index to create a tag file.

Data verification and post-writing means that after the production management application server sends a tag data detection service start request, the data detection terminal analyzes and locates the tag within the reading range according to the tag signal strength and distance relationship, and reads the UID and product information in the tag; And under the control of the production management application server, the label product data is repeatedly screened and filtered to find out the missing write, missed reading and wrongly read labels, and feedback and report; for labels with correct and complete product data, the production management application The server sends a label status protection service instruction to the security protection terminal for subsequent processing; for labels with data defects, the production management application server sends a service instruction to eliminate redundant information or write data to the error correction control terminal, and the error correction control terminal Start the related functions to dynamically rewrite the product data in the RFID tag user area.

Data protection and sorting is under the control instructions of the production management application server. The security protection terminal performs the write protection of RFID tags and the sorting operation of failed labels to improve production efficiency; for the labels processed by the error correction control terminal, the security protection terminal Start the data verification function first, filter and screen the wrong tags, and control the sorting device to sort the failed tags; then start the data protection function to change the readable and writable status of the RFID tags with accurate and complete product data to the read-only status , to realize the write protection of the product data in the tag, and at the same time, report the issuance and protection operation of the RFID tag to the production management application server, so as to perform registration and filing management.

Each component device in the system of the present invention will be introduced in detail below.

Referring to Figure 2 first, it introduces the core of data processing, information display and monitoring in the system: the functions of the five components in the production management application server.

Business database operation interface: responsible for encapsulating business databases, shielding the differences in data management of different business databases, providing unified data storage, query and update operations to other units in the form of simple interfaces; accepting data processing process control, business management and system management And intelligently analyze the service requests of the three units, access and update business data, and return the requested processing data or results to the service request unit in time for subsequent processing.

Business management and system management unit: responsible for user management, network management and system management; accept service requests from system managers, perform user registration, login and query operations, and perform corresponding business processing according to the type of request, and also operate with the business database operation interface unit Interact information, provide business processing results to the business database operation interface in the form of atomic services, or present processing results or data sets according to the needs of managers, that is, return them to users.

Data processing process control unit: responsible for managing business data resources of the entire system, completing data processing process control, and providing related processing functions of business data; accepting service requests from intelligent analysis unit and data service interface unit, processing business data and giving feedback Process the result; control the information interaction between the business database operation interface unit and the business database.

Intelligent analysis unit: responsible for managing RFID tags on the moving production line and related logical information resources including event sequences, product data, terminal equipment, verification results, etc. during the production process, and completing the correlation analysis of RFID tags in the above information resources, And execute process control on the analysis results according to the predetermined strategy; accept the service request of the data service interface unit, analyze the data of the RFID tag and feed back the processing result; call the service function of the data processing process control unit to complete the access and analysis of business data; Control the information interaction between the business database operation interface and the business database.

Data service operation interface: In the form of a unified interface, the business data intelligent processing and control functions provided by the intelligent analysis unit and the data processing process control unit in the form of atomic services are encapsulated for four functions of read and write control, data detection, error correction control and security protection. To provide convenience for these terminals to use relevant data processing capabilities; accept service requests from the four terminals of read-write control, data detection, error correction control and security protection, and call the intelligent analysis unit or data processing flow control unit according to the type of request The corresponding atomic service provided performs corresponding business data processing, and returns the processing result or data set to the service requesting terminal for subsequent processing.

Referring to Fig. 3, the functions of the seven parts of the read-write control terminal in the system of the present invention are introduced as follows:

Service and data operation interface: Responsible for the information interaction between the read-write control terminal and the production management application server: accept the control instructions from the business process control unit, exchange data with the production management application server, and feed back the data interaction results to the business process control unit for further processing Subsequent processing.

Business process control unit: As the control core of the read-write control terminal, the management control service and data operation interface initiate service requests to the production management application server and accept its control instructions, and provide corresponding services for various business functions; responsible for controlling and coordinating the terminal Status monitoring, identification cycle control, label inspection and positioning, data writing and alarm presentation, and the other five units jointly complete the data reading and writing of RFID tags; realize the uploading of data of each unit and the issuance of scheduling instructions.

Terminal status monitoring unit: responsible for exchanging information with the production management application server according to the agreed period: actively report the terminal status information, accept the control instructions of the production management application server, and ensure that the terminal is in a continuous, stable and reliable operating state; accept business process control The instruction of the unit sends the terminal identification information and running status information to the production management application server through the service and data operation interface.

Recognition cycle control unit: responsible for monitoring the running speed of the motion production line, and controlling the reading cycle of the RFID tag reader according to the number of tags within the reading range, so that different terminals can achieve synchronous control; accept the control instructions of the business process control unit, and carry out The reading cycle controls and feeds back the result data to complete the synchronization between different terminals; the end of the reading and writing control terminal tag recognition cycle is the beginning of the data verification terminal to start the service mode, thereby realizing the server's synchronization control of each terminal: Complete the writing of RFID tag product data and the association of UID and product data within the recognition cycle.

Label inspection and positioning unit: responsible for the initial verification and positioning of the RFID tags on the motion production line: accept the control instructions of the business process control unit, and verify whether the tags are valid through the RFID tag reader. If the tags are valid, after receiving the service request, Activate the internal circuit of the chip, the induced voltage in the tag changes with the distance from the terminal, and calculate the tag position and obtain the tag UID value through the induced voltage value, complete the precise positioning of the RFID tag on the production line, and collect the tag UID The information is returned to the business process control unit for subsequent processing.

Data writing unit: responsible for writing product data to the RFID tags on the motion production line. Accept the control instructions of the business process control unit, write product data into the RFID tag through the RFID reader, and complete the uniqueness and correlation setting of the RFID tag UID and product data; then feed back the writing results to the business process control unit for further processing Subsequent processing.

Alarm presentation unit: responsible for sending alarm information for abnormalities that occur during the working process of the read-write control terminal: accepting the control instructions of the business process control unit, and reminding and alarming various abnormalities in the form of a combination of sound and light.

Referring to Fig. 4, the functions of each component of the data detection terminal in the system of the present invention are introduced as follows:

Service and data operation interface: Responsible for the information interaction between the data detection terminal and the production management application server: accept the service request from the business process control unit, exchange data with the production management application server, and feed back the data interaction result to the business process control unit for follow-up deal with.

Business process control unit: As the control core of the data detection terminal, the management control service and data operation interface initiate service requests to the production management application server and accept its control instructions, and are responsible for controlling and coordinating terminal status monitoring, identification cycle control, data verification, Alarm presentation and the remaining four units jointly complete the data detection and transmission operations of RFID tags.

Terminal status monitoring unit: responsible for exchanging information with the production management application server according to the agreed period, actively reporting terminal status information, accepting control instructions from the production management application server, and ensuring that the terminal is in a continuous, stable and reliable operating state; accepting the business process control unit The instruction sends the terminal identification information and running status information to the production management application server through the service and data interface.

Recognition cycle control unit: responsible for monitoring the running speed of the motion production line, and controlling the reading cycle of the RFID tag reader according to the number of tags within the reading range, so that different terminals can achieve synchronous control: the end of the terminal tag recognition cycle is error correction Control the terminal to start the service mode; accept the control instruction of the business process control unit, perform the reading cycle control and feed back the result data, so as to complete the synchronization between different terminals.

Data verification unit: responsible for detecting and verifying the business data in the RFID tag on the motion production line: receiving the control instructions from the business process control unit, obtaining the business data in the RFID tag through the RFID reader, and performing detection and verification , and feed back the verification result to the business process control unit for subsequent processing.

The alarm presentation unit is responsible for sending alarm information for abnormalities that occur during the working process of the data detection terminal: accepting the control instructions of the business process control unit, and reminding and alarming various abnormalities in the form of a combination of sound and light.

Referring to Figure 5, the functions of the seven components in the error correction control terminal are introduced as follows:

Service and data operation interface: Responsible for the information interaction between the error correction control terminal and the production management application server: accept the control instructions from the business process control unit, exchange data with the production management application server, and feed back the data interaction results to the business process control unit for further processing Subsequent processing.

Business process control unit: as the control core of the error correction control terminal, the management and control service and data interface initiate service requests to the production management application server, and accept the latter's control instructions, control and coordinate terminal status monitoring, identification cycle control, The other five units of tag positioning, data writing, and alarm presentation jointly complete the data error correction of RFID tags.

Terminal status monitoring unit: responsible for exchanging information with the production management application server according to the agreed period: actively report terminal status information, accept control instructions from the production management application server, and ensure that the terminal is in a continuous, stable and reliable operating state; accept the business process control unit The instruction sends the terminal identification information and running status information to the production management application server through the service and data interface.

Recognition cycle control unit: responsible for monitoring the running speed of the motion production line, controlling the reading cycle of the RFID tag reader according to the number of tags within the reading range, so that different terminals can achieve synchronous control, and complete the internal redundancy of the RFID tag within the recognition cycle Elimination of remaining product data and rewriting of missing information; receiving control instructions from the business process control unit, controlling the reading cycle, and feeding back the control results to complete the synchronization between different terminals.

Tag positioning unit: responsible for positioning the RFID tags on the motion production line: accept the control instructions of the business process control unit, calculate and determine the tag position coordinates through the relationship between the induced voltage value and the distance of the RFID tag reader, and complete the RFID tag on the production line Precisely locate and obtain the UID value of the tag, and then feed back the positioning result to the business process control unit for subsequent processing.

Data writing unit: responsible for accepting the control instructions of the business process control unit, writing or modifying product data to the RFID tags on the motion production line through the RFID reader, and feeding back the writing or modification results to the business process control unit for subsequent processing.

Alarm presentation unit: responsible for sending alarm information for abnormalities that occur during the working process of the error correction control terminal: receiving control instructions from the business process control unit, and reminding and alarming various abnormalities in the form of a combination of sound and light.

Referring to Figure 6, the functions of the six components in the security protection terminal are introduced as follows:

Service and data operation interface: Responsible for the information interaction between the security protection terminal and the production management application server: accept the service request from the business process control unit, exchange data with the production management application server, and feed back the data interaction result to the business process control unit for follow-up deal with.

Business process control unit; as the control core of the security protection terminal, the management and control service and data operation interface initiate service requests to the production management application server, and accept the latter's control instructions, control and coordinate terminal status monitoring, identification cycle control, Data verification protection and exception handling The remaining four units jointly complete the data security protection function for RFID tags.

Terminal status monitoring unit: responsible for exchanging information with the production management application server according to the agreed period, actively reporting terminal status information, accepting control instructions from the production management application server, and ensuring that the terminal is in a continuous, stable and reliable operating state; accepting the business process control unit The instruction sends the terminal identification information and running status information to the production management application server through the service and data interface.

Recognition cycle control unit: responsible for monitoring the running speed of the motion production line, and controlling the reading cycle of the RFID tag reader according to the number of tags within the reading range, so that different terminals can achieve synchronous control; accept the control instructions of the business process control unit, and carry out Control the reading cycle and feed back the result data in order to complete the synchronization between different terminals;

Data verification and protection unit; responsible for verifying and writing protection of the business data in the RFID tags on the running production line: accepting the control instructions of the business process control unit, obtaining and verifying the integrity and integrity of the business data in the RFID tag reader-writer Accuracy, write-protects the accurate and complete product data contained in the RFID tags that pass the verification, and then feeds back the result of the status change to the application server for storage, and feeds the RFID tags that have not passed the verification to the business process control unit for subsequent processing.

Abnormal processing unit: responsible for accepting the control instructions of the business process control unit, and performing abnormal processing on the RFID tags that have not passed the verification on the production line: that is, to determine the RFID tags that have not passed the verification and give an alarm, and then control the sorting device to automatically sort them come out.

Referring to Fig. 7, the specific operation steps of the working method of the system for improving the success rate of reading and writing of radio frequency tags on the motion production line of the present invention are introduced:

Step 1. The read-write control terminal first writes the product data into the RFID tags on the production line to realize the association between the tag UID and the product data.

The data detection terminal screens and filters the product data written in the RFID tags on the production line. If the product data is accurate and complete, go to step 5), and if the data is flawed, go to step 3);

The error correction control terminal eliminates redundant or erroneous data on labels containing defective information and fills in missing data;

Step 2, the application server sends the verification step 1, the control instruction of the tag data to the data detection terminal;

Step 3. The data detection terminal screens, filters and verifies the product data in the RFID tags on the production line. If the product data is accurate and complete, skip to step 5; otherwise, that is, the data has defects, then go to the next step 4. .

Step 4, the error correction control terminal performs data error correction or data overwrite on the label with defective product data.

Step 5: The security protection terminal verifies the overwritten label product data, and if the overwritten data is successful, execute the subsequent step 6; otherwise, perform alarm prompt and sorting processing, and then return to step 2;

In step 6, the security protection terminal changes the read-write status of the RFID tag with complete and accurate product data to a read-only status, so as to realize the protection of product data.

Claims (7)

1. A system for improving the read-write success rate of a radio frequency tag RFID on a sports production line is characterized in that the system consists of a production management application server and four terminals of read-write control, data detection, error correction control and safety protection which are respectively connected with the production management application server through a wired network and/or a wireless network, and the read-write success rate of the RFID tag on the sports production line is improved by respectively executing respectively set tasks and closely matching the different terminals with the production management application server; wherein,

the production management application server is used as a control center of the system and is responsible for overall support and management of coordinated operation of all devices of the system, and the production management application server specifically comprises the following steps: the management system manages and updates various service data resources in a database in real time through network topology, parameter configuration, application service and interface communication, receives, processes, stores, displays and statistically analyzes data transmitted from each terminal data acquisition point, and issues a regulation and control instruction in real time aiming at an abnormal state; supporting, managing and controlling the service flow and the data flow in the production flow, and carrying out intelligent analysis and decision-making on various data resources and service processing flows; the management and control read-write control terminal and the data detection terminal are used for realizing the detection of the RFID label, the data read-write and the data verification of the RFID label; an error correction control terminal and a safety protection terminal are also managed and controlled, positioning and data error correction are realized on abnormal RFID tags, final verification and write protection are realized on the RFID tags on the motion production line, and tag states are managed; the system is provided with a service database, three units of intelligent analysis, data processing flow control, service management and system management and two operation interfaces of data service and data operation; the service data stored in the service database comprises: system users, product attributes, terminal equipment, production line identification, RFID label product data, verification results, user login, information of various events and logs;

the read-write control terminal consists of a computer running a read-write control program, an RFID reader-writer and an antenna thereof, and is used for selecting the RFID label group in the identification range on the motion production line, starting a label identification period, and performing validity detection and product data read-write on the RFID label based on the unique identifier UID; the written product data includes at least: product name, place of production, manufacturer, brand, grade, date of production, lot number, flow line and operator number; and establishing association of the tag UID and the product data;

the data detection terminal consists of a computer running a data detection program, an RFID reader-writer and an antenna thereof, and is responsible for carrying out data detection and verification on the RFID label processed by the read-write control terminal on the motion production line, identifying errors, triggering an error correction control flow and uploading the error correction control flow to the production management application server;

the error correction control terminal consists of a computer for running an error correction control program, an RFID reader-writer and an antenna thereof, is responsible for accurately positioning the wrong RFID label found by the data detection terminal, judging the error type of the wrong RFID label and writing accurate and complete product data to the RFID label;

the safety protection terminal comprises a computer running a safety protection program, an RFID reader-writer, an antenna thereof and a sorting device, is responsible for carrying out final product data verification on RFID labels on a movement production line and finishing the state management of the labels, and specifically comprises the following steps: and performing write protection processing on the tags passing the verification, and performing failure sorting on the tags failing the verification.

2. The system of claim 1, wherein the functions of the components of the production management application server are as follows:

the service database operation interface is responsible for packaging the service database, shielding the difference of different service databases in data management and providing uniform data storage, query and update operations for other units in a simple interface form; receiving service requests of three units of data processing flow control, service management and system management and intelligent analysis, accessing and updating service data, and timely returning the requested processing data or result to the service request unit for subsequent processing;

the service management and system management unit is responsible for user management, network management and system management; receiving a service request of a system manager, executing user registration, login and query operations, performing corresponding service processing according to the request type, interacting information with a service database operation interface unit, and returning a processing result or data set to a user;

the data processing flow control unit is responsible for managing the service data resources of the whole system, finishing the flow control of data processing and providing the related processing function of the service data; receiving service requests of the intelligent analysis unit and the data service interface unit, processing service data and feeding back a processing result; controlling information interaction between the service database operation interface unit and the service database;

the intelligent analysis unit is responsible for managing the RFID tags on the motion production line and various related logic information resources including events, product data, terminal equipment and verification results in the production process, completing the correlation analysis of the RFID tags in the information resources and executing flow control on the analysis results according to a preset strategy; receiving a service request of a data service interface unit, performing data analysis of the RFID tag and feeding back a processing result; calling a service function of a data processing flow control unit to finish the access and analysis of the service data; controlling information interaction between a service database operation interface and a service database;

the data service operation interface encapsulates the intelligent analysis unit and the intelligent service data processing control function provided by the data processing flow control unit in an atomic service mode in a uniform interface mode, and is used for four terminals of read-write control, data detection, error correction control and safety protection to call, so that convenience is provided for the terminals to use related data processing capacity; receiving service requests of four terminals of read-write control, data detection, error correction control and safety protection, calling corresponding atomic services provided by an intelligent analysis unit or a data processing flow control unit according to the request types, carrying out corresponding service data processing, and returning a processing result or a data set to the service request terminal for subsequent processing.

3. The system of claim 1, wherein the functions of the components of the read-write control terminal are as follows:

the service and data operation interface is responsible for information interaction between the read-write control terminal and the production management application server, and specifically comprises the following steps: receiving a control instruction of the business process control unit, interacting data with the production management application server, and feeding back a data interaction result to the business process control unit for subsequent processing;

the system comprises a read-write control terminal, a service flow control unit, a management control service and data interface, a production management application server and a RFID tag, wherein the read-write control terminal is used as a control core of the read-write control terminal, and the management control service and data interface initiates a service request to the production management application server and receives a control instruction of the production management application server to control and coordinate the terminal state monitoring, the identification period control, the tag inspection and positioning, the data writing and the alarm presentation;

the terminal state monitoring unit is responsible for exchanging information with the production management application server according to an appointed period, and specifically comprises the following steps: reporting terminal state information, receiving a control instruction of a production management application server, and ensuring that the terminal is in a continuous, stable and reliable operation state; receiving an instruction of a service flow control unit, and sending terminal identity identification information and running state information to a production management application server through a service and data operation interface;

the identification cycle control unit is responsible for monitoring the running speed of the moving production line and controlling the identification cycle of the RFID label reader-writer according to the number of labels in the identification range so as to realize synchronous control of different terminals; receiving a control instruction of a service flow control unit, performing reading cycle control and feeding back result data so as to complete synchronization among different terminals;

the tag inspection and positioning unit is responsible for performing initial verification and positioning on the RFID tags on the moving production line, and specifically comprises: receiving a control instruction of the service flow control unit, verifying whether the tag is effective through an RFID tag reader-writer, calculating the position of the tag through the induction voltage value, finishing the accurate positioning of the RFID tag on the production line, and feeding a detection result back to the service flow control unit for subsequent processing;

the data writing unit is responsible for writing product data into the RFID label on the motion production line; receiving a control instruction of the service flow control unit, writing product data into the RFID tag through the RFID reader-writer, and feeding a writing result back to the service flow control unit for subsequent processing;

an alarm presenting unit; the method is responsible for sending alarm information to the abnormity appearing in the working process of the read-write control terminal, and specifically comprises the following steps: and receiving a control instruction of the service flow control unit, and reminding and alarming various abnormalities in an acousto-optic combined alarm mode.

4. The system of claim 1, wherein the functions of the components of the data detection terminal are as follows:

the service and data operation interface is responsible for information interaction between the data detection terminal and the production management application server, and specifically comprises the following steps: receiving a service request of the business process control unit, interacting data with the production management application server, and feeding back a data interaction result to the business process control unit for subsequent processing;

the service flow control unit is used as a control core of the data detection terminal, and the management control service and data interface initiates a service request to the production management application server and receives a control instruction of the service request, and is responsible for controlling and coordinating the four other units of terminal state monitoring, identification cycle control, data verification and alarm presentation to jointly complete data detection of the RFID tag;

the terminal state monitoring unit is responsible for interacting information with the production management application server according to an appointed period, reporting the terminal state information, receiving a control instruction of the production management application server and ensuring that the terminal is in a continuous, stable and reliable running state; receiving an instruction of a service flow control unit, and sending terminal identity identification information and running state information to a production management application server through a service and data operation interface;

the identification cycle control unit is responsible for monitoring the running speed of the moving production line and controlling the identification cycle of the RFID label reader-writer according to the number of labels in the identification range so as to realize synchronous control of different terminals; receiving a control instruction of a service flow control unit, performing reading cycle control and feeding back result data so as to complete synchronization among different terminals;

the data verification unit is responsible for detecting and verifying service data in the RFID label on the motion production line, and specifically comprises the following steps: receiving a control instruction of the service flow control unit, acquiring service data in the RFID label through the RFID reader, detecting and checking, and feeding a check result back to the service flow control unit for subsequent processing;

the alarm presenting unit is responsible for sending alarm information to the abnormity appearing in the working process of the data detection terminal, and specifically comprises the following steps: and receiving a control instruction of the service flow control unit, and reminding and alarming various abnormalities in an acousto-optic combined alarm mode.

5. The system according to claim 1, wherein the functions of the components of the error correction control terminal are as follows:

the service and data operation interface is responsible for information interaction between the error correction control terminal and the production management application server, and specifically comprises the following steps: receiving a control instruction of the business process control unit, interacting data with the production management application server, and feeding back a data interaction result to the business process control unit for subsequent processing;

the service flow control unit is used as a control core of the error correction control terminal, the management and control service and data interface sends a service request to the production management application server, receives a control instruction of the latter, and controls and coordinates the terminal state monitoring, the identification period control, the label positioning, the data writing and the alarm presentation to jointly complete the data error correction of the RFID label by the other five units;

the terminal state monitoring unit is responsible for exchanging information with the production management application server according to an appointed period, and specifically comprises the following steps: reporting terminal state information, receiving a control instruction of a production management application server, and ensuring that the terminal is in a continuous, stable and reliable operation state; receiving an instruction of a service flow control unit, and sending terminal identity identification information and running state information to a production management application server through a service and data operation interface;

the identification cycle control unit is responsible for monitoring the running speed of the moving production line and controlling the identification cycle of the RFID label reader-writer according to the number of labels in the identification range so as to realize synchronous control of different terminals; receiving a control instruction of a service flow control unit, controlling a reading period, and feeding back a control result so as to complete synchronization among different terminals;

the label positioning unit is responsible for positioning the RFID label on the movement production line, and specifically comprises: receiving a control instruction of the service flow control unit, calculating the position of the tag through the induced voltage value of the RFID tag reader-writer, finishing the accurate positioning of the RFID tag on the production line, and feeding the positioning result back to the service flow control unit for subsequent processing;

the data tracing and writing unit is responsible for receiving a control instruction of the service flow control unit, tracing or modifying product data to the RFID label on the motion production line through the RFID reader-writer, and feeding back a writing or modifying result to the service flow control unit for subsequent processing;

the alarm presenting unit is responsible for sending alarm information to the abnormity appearing in the working process of the error correction control terminal, and specifically comprises the following steps: and receiving a control instruction of the service flow control unit, and reminding and alarming various abnormalities in an acousto-optic combined alarm mode.

6. The system of claim 1, wherein the functions of the various components of the security terminal are as follows:

the service and data operation interface is responsible for information interaction between the safety protection terminal and the production management application server, and specifically comprises the following steps: receiving a service request of the business process control unit, interacting data with the production management application server, and feeding back a data interaction result to the business process control unit for subsequent processing;

the service flow control unit is used as a control core of the safety protection terminal, the management and control service and data interface initiates a service request to the production management application server, receives a control instruction of the latter, and controls and coordinates the other four units of terminal state monitoring, identification cycle control, data verification protection and exception handling to jointly complete a data safety protection function aiming at the RFID label;

the terminal state monitoring unit is responsible for interacting information with the production management application server according to an appointed period, reporting the terminal state information, receiving a control instruction of the production management application server and ensuring that the terminal is in a continuous, stable and reliable running state; receiving an instruction of a service flow control unit, and sending terminal identity identification information and running state information to a production management application server through a service and data operation interface;

the identification cycle control unit is responsible for monitoring the running speed of the moving production line and controlling the identification cycle of the RFID label reader-writer according to the number of labels in the identification range so as to realize synchronous control of different terminals; receiving a control instruction of a service flow control unit, performing reading cycle control and feeding back result data so as to complete synchronization among different terminals;

the data verification protection unit is responsible for verifying and write-protecting service data in the RFID tag on the operation production line, and specifically comprises the following steps: receiving a control instruction of the service flow control unit, acquiring and checking service data in the service flow control unit through an RFID tag reader-writer, performing write protection on the RFID tag which passes the checking, and feeding back the RFID tag which does not pass the checking to the service flow control unit for subsequent processing;

the exception handling unit is responsible for receiving the control instruction of the business process control unit and carrying out exception handling on the RFID tags which do not pass the verification on the production line, and specifically comprises the following steps: namely, the RFID tags which fail to pass the verification are determined and alarm, and then the sorting device is controlled to automatically sort out the RFID tags.

7. The system of claim 1, wherein the system is centered on product data in the radio frequency tag RFID, and provides five functions including terminal synchronization control, terminal status and tag validity monitoring, data acquisition and writing, data verification and tracing, data protection and sorting, wherein,

the terminal synchronous control is to synchronously manage the working states of four terminals, namely read-write control, data detection, error correction control and safety protection, which are deployed on a motion production line, and control the tag identification period of each terminal according to the running speed of the production line and the terminal identification range so as to control the starting and ending time of the identification tags of each terminal; so as to reduce the average time of label identification and reduce the conflicts among terminals and between terminals and labels;

the terminal state and label effectiveness monitoring is that the production management application server carries out matching verification on the identity information and the running state information periodically reported by each terminal after the system is started according to the stored registration information of each terminal, and simultaneously intelligently analyzes the state control data of each terminal to determine the running state of each terminal so as to ensure the reliability, stability and continuity of data transmission between each terminal and the RFID label on a production line; meanwhile, the reading and writing control terminal and the data detection terminal respectively judge the effectiveness of the label according to the feedback result of the label group to the data reading and writing request in the reading range, so that the effectiveness monitoring of the label is realized;

in each reading period, the reading and writing control terminal sends a data reading and writing instruction to the label group in the reading range according to the set time length, analyzes and determines the label coordinate according to the strength and distance relation of the sensed label signal, and positions and reads the RFID label; under the control of the production management application server, writing the product data into the RFID label; the read-write control terminal sends a request for starting data detection service to the data detection terminal through the production management application server while finishing writing data in each label, and the application server establishes a label file by taking the UID of the label as an index;

the data verification and the data tracing are that after the production management application server sends out a tag data detection service starting request, the data detection terminal analyzes and positions the tag in the reading range according to the signal intensity and the distance relation of the tag, and reads the UID and the product information in the tag; under the control of the production management application server, repeated screening and filtering detection are carried out on the label product data to find labels which are missed in writing, missed in reading and wrong in reading, and the labels are fed back and reported; for the label with correct and complete product data, the production management application server sends a label state protection service instruction to the safety protection terminal so as to carry out subsequent processing; for the labels with data defects, the production management application server sends a service instruction for eliminating redundant information or writing data in an error correction control terminal, and the error correction control terminal starts related functions to dynamically write product data in an RFID label user area;

the data protection and sorting is that under the control instruction of the production management application server, the safety protection terminal executes the write protection of the RFID label and the sorting operation of the failed label so as to improve the production efficiency; for the labels processed by the error correction control terminal, the safety protection terminal starts a data verification function firstly, filters and screens error labels, and controls a sorting device to realize sorting of failed labels; and then starting a data protection function, changing the readable and writable state of the RFID label with accurate and complete product data into a read-only state, realizing the write protection of the product data in the label, and reporting the issuing and protecting operation of the RFID label to a production management application server so as to carry out registration and record management.