WO2021103116A1

WO2021103116A1 - Method, apparatus and device for reading data of rfid tag, and storage medium

Info

Publication number: WO2021103116A1
Application number: PCT/CN2019/123776
Authority: WO
Inventors: 赵旭
Original assignee: 独角兽网络科技（苏州）有限公司
Priority date: 2019-11-25
Filing date: 2019-12-06
Publication date: 2021-06-03
Also published as: WO2021103115A1; WO2021103117A1; CN110969036A; CN110969036B

Abstract

A method, apparatus and device for reading data of an RFID tag, and a storage medium, belonging to the technical field of communications. The method specifically comprises: sending a configuration command to an RFID reader, wherein the RFID reader is used for finding a corresponding electronic tag; selecting an electronic tag confirmed by an anti-collision operation and authenticating the selected electronic tag; and when authentication is passed, receiving data of the electronic tag. The method, apparatus and device for reading data of an RFID tag and the storage medium provided can overcome the problem of different management programs being required for controlling an existing device in different operating system environments.

Description

Method, device, equipment and storage medium for reading RFID tag data

Technical field

The present invention relates to the field of communication technology, and in particular to a method, device, equipment and storage medium for reading RFID tag data.

Background technique

At present, with the application and development of the Internet of Things in various industries, RFID (Radio Frequency Identification) technology has played an indispensable role as an information terminal for the Internet of Things technology. The existing RFID system is shown in Figure 1. It usually includes an electronic tag, a reader, and an antenna (reader antenna, electronic tag antenna) for data communication between the electronic tag and the reader. The electronic tag stores Electronic data in a certain format is used as the identification information to identify the item. In the application, the electronic tag is attached to the item to be identified and used as the electronic mark of the item to be identified. The reader sends a command to the electronic tag, and the electronic tag is based on the received The reader instruction of the reader transmits the stored identification data to the reader to realize data communication. The reader reads and decodes the data and then transfers the data to the control device or network for related data processing.

The management of the RFID system in the prior art usually relies on the management software on the computer, and the computer has different operating systems in different use environments, such as Windows XP\Windows Vista\Windows 7\Windows 8\Windows 10 and Linux, etc. , The management software runs in the environment of different systems, and different applications and RFID middleware are needed to realize the management and control of the equipment. When connecting with third-party systems, customized development is required. When the operating system is upgraded, there may be changes in the original application program interface due to the upgrade, resulting in management software incompatibility, non-working, or even management software crashes. It is more difficult for ordinary users to deal with such situations.

Therefore, there is an urgent need for a solution that can solve the above-mentioned problems.

Summary of the invention

In order to solve the above problems, the present invention provides a method, device, equipment and storage medium for reading RFID tag data.

In the first aspect, the present invention provides a method for reading RFID tag data, including:

Send a configuration command to the RFID reader, the RFID reader is used to find the corresponding electronic tag; select the electronic tag confirmed by the anti-collision operation and authenticate the selected electronic tag;

When the authentication is passed, the data of the above electronic tag is received.

In a second aspect, the present invention provides a device for reading RFID tag data, including a configuration module and a reading module, wherein:

The configuration module is used to send configuration commands to an RFID reader, and the RFID reader is used to find the corresponding electronic tag; select the electronic tag confirmed by the anti-collision operation and authenticate the selected electronic tag;

The reading module is used to receive the data of the above electronic tag when the authentication is passed.

In a third aspect, the present invention provides an RFID device including: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and the computer program is implemented when the processor is executed The steps of the method as described in any one of the above.

In a fourth aspect, the present invention provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the method described in any of the above are implemented.

The method, device, device and storage medium for reading RFID tag data provided by the present invention can be adapted to different operating system environments and overcome the problem that existing equipment requires different management programs to control. In addition, operating system upgrades may cause Changes in the underlying interface SDK, etc., caused the original management program to fail to work normally.

Description of the drawings

The drawings described here are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, and do not constitute an improper limitation of the present invention. In the attached picture:

Figure 1 is a structural diagram of an existing RFID system;

Figure 2 shows the RFID system and its components in an exemplary embodiment of the present invention;

Figure 3 is a diagram of the RFID reader and electronic tag components in an exemplary embodiment of the present invention;

Fig. 4 is a flowchart of reading and writing of RFID tag data in an exemplary embodiment of the present invention.

Fig. 5 is an interactive diagram of reading and writing RFID tag data in an exemplary embodiment of the present invention.

Fig. 6 is a diagram of a device for reading and writing RFID tag data in an exemplary embodiment of the present invention.

Detailed ways

In order to make the objectives, technical solutions, and advantages of the present invention clearer, the technical solutions of the present invention will be described clearly and completely below in conjunction with specific embodiments of the present invention and the corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

This application is applied to the RFID system as shown in Figure 2. The RFID system consists of three parts: an electronic tag, a reader and a terminal. The communication between the terminal and the reader is wired communication, and the communication between the reader and the electronic tag The communication is wireless communication, and the basic communication process is read and write ROM→antenna→electronic tag→output. Among them, the wireless communication in the reader is completed through a radio frequency module, which includes a power supply device, a radio frequency oscillator, a radio frequency processor, a radio frequency receiver, and a preamplifier. The radio frequency oscillator generates a signal, modulates the transmitted signal through the radio frequency processor, and sends it to the antenna to send to the electronic tag. The signal sent back from the electronic tag is received by the radio frequency receiver, amplified and sent to the control module for processing. The control module is responsible for communicating with the application system software and controlling the communication between the reader and the electronic tag. It is an important part of the reader. The control module receives the instructions sent by the application system software, and sends it to the radio frequency module for modulation through the signal encoding and encryption, and then sends it to the tag via the antenna. Demodulate, decode and decrypt the signal sent by the electronic tag to the application system software.

Among them, the operating system of the terminal in this application includes but is not limited to operating systems such as Windows XP\Windows Vista\ Windows 7\Windows 8\Windows 10 and Linux. The communication between the terminal and the reader includes, but is not limited to, for example, USB, IEEE Communication protocols such as 1394, Thunderbolt, TCP/IP, UDP, and terminals including but not limited to mobile phones, tablet computers, personal computers, servers, etc. can be configured to execute at least one of the methods provided in the embodiments of the present application. For ease of description, the implementation of the method is introduced below by taking a terminal as an example of the execution subject of the method. It can be understood that the fact that the execution subject of the method is the terminal is only an exemplary description, and should not be understood as a limitation of the method.

The electronic tag (Tag) is the real data carrier of the radio frequency identification system. Each electronic tag has a unique electronic code, which is generally attached to the object to be monitored for wireless data exchange with the reader through electromagnetic waves, and has the functions of intelligent reading and writing and encrypted communication. The electronic tag receives the signal sent by the reader, and converts it into a DC power supply for the circuit in the electronic tag to work. The data is sent back according to the requirements of the reader, and the data is modulated and sent to the reader by the antenna.

All electromagnetic communications need to occupy a certain frequency and bandwidth. RFID communications are no exception. The frequency band or frequency occupied by system applications is in the ISM (Industrial Scientific Medical) frequency band. This frequency band is mainly open to industry, science and medicine. It is used by a major organization without authorization, only a certain transmit power (generally less than 1W) is required, and no interference to other frequency bands is enough. At present, the typical working frequency bands widely adopted by RFID systems internationally include four frequency bands: low frequency, high frequency, ultra high frequency and microwave. They are low frequency 125kHz and 133kHz, high frequency 13.56MHz and 27.12MHz, UHF 433MHz and 860MHz-960MHz, microwave 2.45GHz and 5.8GHz. The working frequency is different, the working principle is also different, the recognition distance is also different, the low frequency recognition distance is closer, the microwave recognition distance is longer.

Specific embodiment one:

The design of the RFID electronic tag (Tag) in the embodiment of this application mainly includes the following key technologies, coding and modulation, digital modulation, error detection and correction, coding in the baseband, etc. The specific components of each module are shown in Figure 3. Shown.

1. Coding and modulation

For the RFID system, the data transmission between the reader and the transponder requires three modules: transmitter, receiver and information channel. The transmitter is composed of modulator and signal processing. The receiver is composed of demodulation circuit and signal processing in the transponder. The information channel is mainly the medium for information transmission. The data encoding methods involved in this application include PIE code, Manchester code, and Miller. Code, etc., the data modulation methods involved include ASK, unilateral ASK, bilateral ASK, PR-ASK, etc.

2. Digital modulation

Electromagnetic energy is emitted into space in the form of electromagnetic waves, and information can be encoded by changing any one or several of the three parameters of electromagnetic waves, namely frequency, power, and phase, and then transmitted to any place in space through electromagnetic waves. By encoding the information of the electromagnetic wave, it is modulation, and the carrier is the electromagnetic wave without modulation. The original information can be obtained from the received electromagnetic wave by analyzing the changes in its frequency, phase, and received power. This is demodulation. The modulation method commonly used in RFID is mainly composed of frequency shift keying, amplitude keying and subcarrier.

3. Encoding in the baseband

Encoding uses different forms of codes to represent 0 and 1 in binary. Commonly used encoding methods in RFID include Miller code, single-stage return to zero code, MRZ code, differential two-way code, deformed Miller code, Manchester code And other forms.

4. Error detection and correction

When using RFID technology to transmit data, it is easy to be interfered by the outside world, which can cause data to change and cause errors in the results. Therefore, it is necessary to introduce ECC (Error Correcting Code, error detection and correction) technology. Measures are used to correct the changed data. Commonly used techniques in related technologies include parity checking. The method of parity check includes vertical parity check, horizontal parity check, horizontal and vertical parity check and so on. Among them, the longitudinal parity is grouped by characters. The horizontal parity and the longitudinal parity can only detect the encoding errors of the data in the horizontal and vertical directions, and cannot do anything about the error of a certain character. This application combines the parity check methods in the longitudinal direction and the transverse direction to obtain cross-checking. This method has very good error detection performance.

The implementation of the method for outputting RFID tag data provided by the present invention is shown in Fig. 4:

S401: Send a signal through the antenna in the reader to search for tags that are sensed in a specific frequency range. By configuring the relevant parameters of the RFID reader, set the antenna transmission frequency, call the API interface according to the transmission frequency and select the corresponding mode.

Specifically, this application can set the parameters of the RFID device through the supporting management software according to user needs, such as:

Working mode: It can be configured to read/write RFID tags by triggering or automatically and continuously read RFID tags.

Reading frequency band: Configure the read RF frequency band standard (840MHz-844.5MHz\902MHz-928MHz, etc.) and power sensitivity and other parameters.

Reading area: you can specify the designated area of the RFID tag to be read, such as the unique identification code TID of the electronic tag, the electronic product code EPC and the reading of user data Userdata;

Read length: you can specify the read configuration of any length and any starting position;

Reading mode: The interval time of the output mode can be configured. For example, the same label will not be output repeatedly within a few seconds, and the new label will be output immediately;

Output mode: You can configure the output data rules and format, such as PS2, HID protocol rules;

When the system can read data and there is an electronic tag, the electronic tag receives the command sequence sent. At this time, the electronic tag will transmit the unique identification code stored in the EPROM to the part that needs authentication. Call the void WriteRV (uchar Address, uchar Value) function, send the request command parameter 28H into the input and output data register, and then call the WriteRawRV function to send the request command word 16H. After running, the input and output data will contain the electronic label The unique identification code. Then, call uchar ReadRV (uchar Address) to get the operation result.

S402: Anti-collision operation. This application can choose to call the native API or write the anti-collision algorithm, call this interface, and then the reader can read the current anti-collision electronic tag serial number through its own register. The anti-collision algorithms involved in this application include ALOHA algorithm, binary search algorithm, label estimation algorithm, etc.

The selection of electronic tags will apply to the selection of electronic tags for collision problems, and the information records will appear inaccurate after collisions. Therefore, after the anti-collision algorithm is programmed, the algorithm function is stored in the address 0x4000000 in the ROM. After the collision problem occurs, call the WriteRV function to send the collision parameters to the input and output data register, and then call the WriteRawRV instruction to send the instruction word 80H to the register. After running, the input and output data register stores the result of the collision processing. The result is an 8-byte identification code, which represents the identification code of the electronic tag that the reader should read.

S403: Authentication security of the electronic tag After collision processing, the tag number that can be read is obtained, and the authentication step of the RFID reader and electronic tag is entered. The authentication security of RFID readers and electronic tags must comply with the national standard ISO9798. Both the reader and the electronic tag should have the secret key to authenticate each other. In normal mode, both parties have the same Key. The secret key can be generated iteratively by a pseudo-random algorithm, as shown in the following formula:

Key _i =(aKey _i-1 +b)%m

Specify the initial value Key, which can be a memory address in the ROM of the reader, where a is the iteration parameter, b is the iteration constant, and m is the numerical control scale. After reaching the designated operating level n, the Key can be obtained.

Then the RFID reader calls the char Pcd Auth Key(uchar*coded) function to verify the secret key to the electronic tag. The electronic tag returns a random number R after the hardware calculations solidified in the ROM, and the reader calls the function char Pcd after receiving R. Auth State (uchar auth_mode, uchar block, uchar*snr) is verified, and then the connection can be established.

Select the electronic label and return the relevant information collected by the electronic label, mainly returning information such as the unique identification code TID of the electronic label, the electronic product code EPC, and the user data Userdata.

S404: Perform security authentication in the reader system to determine the accuracy of the data and the relevant security of the data source. If the certification is passed, the label content can be transmitted. Electronic tags can be divided into different sectors, and different sectors can be read by calling different APIs of the reader. The software part of the RFID reader mainly completes the configuration of the storage content and capacity of each register of the reader.

Read and write operations on the electronic tag After the RFID reader and the electronic tag are successfully authenticated, the reader can read and write the electronic tag. This step mainly calls the Write RV function to send the read and write command parameters into the input and output data registers. The read instruction of the electronic tag is 38H, the write instruction is 18H, and then the Write Raw Rc function is called to send the operation instruction 16H to the instruction register. After the RIFD reader executes it, the data can be obtained in the input and output data registers.

Further, the command packet of the terminal corresponds to a command execution result data packet. The application interface layer receives the command packet sent by the terminal, parses the parameters therein, and executes the corresponding callback function according to the analysis result. After the command is executed, the reader will package the execution result and send it to the terminal for processing and display. If the operation is successful, the read electronic label will be output as a label document, and the serial number in the document will be automatically numbered. If the operation fails, it will return failure. And output as a log file. Through the embodiments of this application, there is no need to install application software, which overcomes the need for device management and control through different applications and RFID middleware in the prior art, especially when interfacing with third-party systems, it requires customized development. , The automatic reading and writing operation of electronic label data is realized efficiently and conveniently.

Specifically, the command packet of this application consists of a 1-byte packet type, a 1-byte packet length, and a variable-length data field. The definition of the command bit field is shown in Table 1 below:

Table 1: Application interface layer command packet definition

Byte1Byte1	Byte2Byte2	Byte[3……N+4]Byte[3……N+4]
命令包类型IDCommand packet type ID	命令包长度LCommand packet length L	命令包有效数据域Command packet valid data field

The definitions of terminal system interfaces and read operation functions are listed in Table 2. It should be stated that the definitions here are only exemplary and not restrictive. Those skilled in the art can fully write operation interfaces according to actual data transmission requirements and user needs. Function definition and function description.

Table 2: Definition of read operation command interface

In this application, the communication between the RFID reader and the electronic tag requires a unified data structure, so that the interface function can be used to convert the communication data packet into its own memory data structure during the analysis of the reader, and the communication data packet can be converted through hardware conversion It is converted into instruction data, thus avoiding the data transmission abnormal problem caused by the different firmware version of the data format. The data packet structure is shown in Table 3:

Table 3: Data packet structure

1BYTE1BYTE	1BYTE1BYTE	1BYTE1BYTE	NBYTENBYTE	1BYTE1BYTE
长度length	包类型Package type	标签地址Label address	数据data	CRCCRC

At the same time, according to the process types and process parameters that the system needs to interact with each other in the entire process, communication data packets can be divided into specific categories: FIND, SEND and ACK data packets. The details are as follows in Table 4:

Table 4: Data packet type table

SEND data packets and ACK data packets are RFID system communication data packets, that is, the reader can send information to the electronic tag through the SEND data packet, or ACK receives the electronic tag data information, and the electronic tag receives the instruction to be executed through the ACK data packet. In the actual application environment, the relevant data packet of the reader should add the Command command bit, and the electronic tag should add the receiving bit.

Further, the packet sent and received by the RFID reader has a unified identification, which is defined as flag1 in the flag bit. When the communication type is FIND, the packet type is:

When the communication data packet type is SEND, it means that the RFID reader has established a connection with the electronic tag, and then starts to send commands or data. With the SEND package, normal communication can be carried out between the two. At the same time, the package should be checked in the middle of the process to ensure some parameters of the data in the process. In addition, when communicating, the package needs to be sent as a data frame, and the content in the package structure can be analyzed when receiving.

At the receiving end, the main manifestation is the analysis of the packet. The analysis can be carried out through the content in the table item. The data packet types are as follows:

Table 5: SEND packet

When the communication data packet type is ACK, it indicates the data that can be sent by the tag in the system. The package types are shown in the table.

In the RFID reader system, the flag bit of the data packet sent by the electronic label is 2. When the communication data packet is of the SEND type, it mainly sends the electronic label to collect data, and its structure is shown in the table.

When the communication data packet is of ACK type, it mainly sends the response data packet to the RFID reader. Its structure is shown in the table:

In the entire system, the electronic tag is mainly responsible for data collection and data transmission to the reader. The main data collection commands should be issued by the RFID reader. The electronic tag and RFID reader and terminal are shown in Figure 5. The interaction process is:

(1) The RFID reader performs power-on reset, sends electromagnetic waves in a specific frequency band, and waits for the electronic tag to respond to the range.

(2). In the waiting process, if an ACK data packet from the electronic label node is received, indicating that an electronic label has entered, the reader/writer sends back an acknowledgement data packet to the electronic label.

(3) Analyze the tag data and perform corresponding operations according to the rules pre-configured in the reader ROM.

(4) Receive the data packet sent by the electronic tag, and convert the communication data packet into its own memory structure for analysis, and then output to the external system according to the set rules. If the information is wrong, set an error retransmission counter and wait for the electronic tag to be retransmitted, and send an error message that the electronic tag is unreachable when the counter reaches the threshold.

Since the stored data of the electronic tag is relatively small, there are fewer types of communication data packets, and it should be sent to the reader in time during data collection. The specific process is:

(1) The tag is initialized, and the antenna signal of the reader is received when it is working. The hardware circuit parses the data packet and sends an ACK communication data packet to the resolved address, requesting to join the network.

(2). Receive the reader ACK packet. Operate accordingly according to the content of the reply. If the reply is received, the data sending module will be started, and the SEND data packet will be sent to confirm the channel on the channel configured by the reader. If a packet indicating an error is received, report the error and exit.

(3) After receiving the reader control command, parse the control command, execute the operation corresponding to the command, and then send a SEND packet back to the reader.

(4) If there is an error in the collection and sending process, send the ACK packet to the reader, and the reader will send back the command after parsing.

The terminal side mainly implements the rule configuration of the reader, such as setting the working parameters of reading RFID tags:

Further, the reader/writer reads the electronic tag data according to the configured rules and outputs it to the terminal for processing and display.

Specific embodiment two:

Fig. 6 is a device for outputting RFID tag data in another exemplary embodiment of the present invention, which includes a search module 61, a selection device 62, an authentication module 63, and an output module 64, wherein:

The searching module 61 is used for searching the corresponding electronic label according to the configuration rule;

The selection module 62 is used to select the electronic tag confirmed by the anti-collision operation;

The authentication module 63 is used to authenticate the above-mentioned selected electronic tag;

The operation module 64 is used to output the electronic tag data after passing the authentication.

The modules in the device for outputting RFID tag data provided by the embodiments of the present invention can also be used to implement the functions corresponding to the steps of the methods in the foregoing embodiments, which will not be repeated here.

An embodiment of the present invention also provides an RFID device, including: a memory, a processor, and a computer program stored in the memory and capable of running on the processor. When the computer program is executed by the processor, each step of the above RFID tag data output method is implemented. .

The embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium. When the computer program is executed by a processor, each process of the above-mentioned RFID tag data output method embodiment is realized, and the same can be achieved. The technical effect, in order to avoid repetition, will not be repeated here. Wherein, the computer-readable storage medium, such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.

Those skilled in the art should understand that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, this application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment combining software and hardware. Moreover, this application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program codes.

This application is described with reference to the flowcharts and/or block diagrams of the methods, equipment (systems), and computer program products of the embodiments of the application. It should be understood that each process and/or block in the flowchart and/or block diagram, and the combination of processes and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions can be provided to the processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing equipment to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing equipment are used to generate It is a device that realizes the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be stored in a computer-readable memory that can direct a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device. The device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment. The instructions provide steps for implementing the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.

In a typical configuration, the computing device includes one or more processors (CPUs), input/output interfaces, network interfaces, and memory.

The memory may include non-permanent memory in computer readable media, random access memory (RAM) and/or non-volatile memory, such as read-only memory (ROM) or flash memory (flash RAM). Memory is an example of computer readable media.

Computer-readable media include permanent and non-permanent, removable and non-removable media, and information storage can be realized by any method or technology. The information can be computer-readable instructions, data structures, program modules, or other data. Examples of computer storage media include, but are not limited to, phase change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technology, CD-ROM, digital versatile disc (DVD) or other optical storage, Magnetic cassettes, magnetic tape magnetic disk storage or other magnetic storage devices or any other non-transmission media can be used to store information that can be accessed by computing devices. According to the definition in this article, computer-readable media does not include transitory media, such as modulated data signals and carrier waves.

It should also be noted that the terms "include", "include" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, product or equipment including a series of elements not only includes those elements, but also includes Other elements that are not explicitly listed, or also include elements inherent to such processes, methods, commodities, or equipment. If there are no more restrictions, the element defined by the sentence "including a..." does not exclude the existence of other identical elements in the process, method, commodity or equipment that includes the element.

The above are only examples of the application, and are not used to limit the application. For those skilled in the art, this application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of this application shall be included in the scope of the claims of this application.

Claims

A method for reading RFID tag data, which is characterized in that it comprises:

Send a configuration command to an RFID reader, the RFID reader is used to find the corresponding electronic tag; select the electronic tag confirmed by the anti-collision operation and authenticate the selected electronic tag;

When the authentication is passed, the data of the electronic tag is received.
The method according to claim 1, characterized in that, before said searching for the corresponding electronic label, the method further comprises:

The RFID reader receives the configuration instruction of the working parameter, parses the configuration instruction and writes it into the configuration ROM.
The method according to claim 2, wherein the working parameters include one or more of the following: working mode, reading area, reading length, reading mode, and reading configuration.
The method according to claim 1, wherein said searching the corresponding electronic label comprises:

The RFID reader searches for the corresponding electronic tag in a specific frequency band through a preset data packet format.
The method according to claim 4, wherein the preset data packet format includes: length, data packet type, tag address and data, wherein the data packet type includes FIND, SEND, and ACK.
The method according to claim 1, wherein the anti-collision operation comprises processing by one or more of the following algorithms: ALOHA algorithm, binary search algorithm, and label estimation algorithm.
The method according to claim 1, wherein said performing security authentication on said selected electronic tag comprises:

The RFID reader obtains an authentication key Key through a pseudo-random algorithm iteratively for security authentication, wherein the pseudo-random algorithm is as follows:

Key i =(aKey i-1 +b)%m

Specify the initial value Key, which is a memory address of the ROM in the reader, where a is the iteration parameter, b is the iteration constant, and m is the numerical control scale.
A device for reading RFID tag data is characterized in that it comprises a configuration module and a reading module, wherein:

The configuration module is used to send a configuration command to an RFID reader, the RFID reader is used to find the corresponding electronic tag; select the electronic tag confirmed by the anti-collision operation and authenticate the selected electronic tag;

The reading module is used for receiving the data of the electronic tag when the authentication is passed.
An RFID device, which is characterized by comprising: a memory, a processor, and a computer program stored on the memory and capable of running on the processor, and the computer program is executed by the processor as claimed in the claims The steps of the method described in any one of 1 to 7.
A computer-readable storage medium, wherein a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the method according to any one of claims 1 to 7 is implemented. step.