General transponder message read-write tool

Abstract

According to the universal transponder message read-write tool, the management unit is responsible for providing a user interface, message processing, communication with the execution unit and other functions, the execution unit is responsible for specific message read-write operation including communication with a transponder, energy transmission and the like, an operator controls the management unit through a man-machine interface, and the operation is convenient. The required operation function and message data are selected, and the management unit outputs model selection control instruction information and message data to the execution unit through the communication module; and the execution unit controls each internal module and antenna to complete specific operation according to the received instruction information and message data. The method has the technical advantages that the equipment operation and maintenance investment can be reduced, the spare part warehouse is widened, the emergency guarantee efficiency is improved, and a powerful guarantee is provided for reliable application and efficient maintenance of transponder equipment.

Description

Technical Field

[0001] The present invention relates to a transponder message reading and writing tool, and in particular to a universal message reading and writing tool capable of reading and writing messages for transponders of multiple manufacturers and models. Background Art

[0002] As one of the key ground equipment of the train control system, the transponder plays an important role in sending train control data to the on-board equipment. With the continuous increase in the mileage of high-speed rail lines, the number of transponders in use has exceeded 300,000 units, and the number of transponder product models that have obtained road qualifications continues to increase. When the transponder device reads and writes messages, the main interfaces involved are A1, A4, and A5 interfaces. Among them, A1 and A4 interfaces are standard interfaces. The transponder receives 27MHz RF energy signals through the A4 interface and outputs FSK uplink signals through the A1 interface; the A5 interface is a custom interface, so the specific definitions of the A5 interfaces of various transponder models are inconsistent, and the specific execution protocols for message writing are also different. Therefore, a single model of reading and writing tools cannot be compatible with the current situation of message writing of various models of transponders; during the on-site transponder message operation and maintenance process, it is necessary to equip the corresponding special reading and writing tools according to the transponder model, which is increasingly in conflict with the faster and more convenient completion of on-site operation and maintenance work.

[0003] The present invention proposes a message reading and writing tool that is compatible with the A5 interface protocol of transponders of various manufacturers and models, which realizes good compatibility and writing of the message reading and writing tool with transponders of various manufacturers and models, can reduce equipment operation and maintenance investment, expand the spare parts library, improve emergency support efficiency, and provide strong guarantee for the reliable use and efficient maintenance of transponder equipment. Summary of the invention

[0004] The present invention provides a message reading and writing tool that is compatible with the A5 interface protocol of transponders of various manufacturers and models, thereby achieving good compatibility of the message reading and writing tool with transponders of various manufacturers and models in terms of writing, reading and rewriting.

[0005] The present invention provides a universal transponder message reading and writing tool, which includes a management unit and an execution unit.

[0006] The management unit is responsible for providing functions such as user interface, message processing and communication with the execution unit, and is composed of a display module, a message extraction module, a communication module, a process control module and a power module;

[0007] The execution unit is responsible for specific message reading and writing operations, including communication with the transponder and energy transfer, etc., and is composed of a read-write control module, a communication module, a 9M / 27M / 4M antenna module, and a power module;

[0008] The instructions and information exchange between the management unit and the execution unit complete the relevant functions through their respective communication modules;

[0009] The operator controls the management unit through the human-machine interface and selects the required operating functions and message data. The management unit outputs the selection control instruction information and message data to the execution unit through the communication module; the execution unit controls the internal modules and antenna to complete the specific operation according to the received instruction information and message data, and feeds back the relevant status and message data information to the management unit through the communication module during and after the process.

[0010] The technical advantages of the present invention are as follows: it can reduce the investment in equipment operation and maintenance, expand the spare parts library, improve the efficiency of emergency support, and provide a strong guarantee for the reliable use and efficient maintenance of transponder equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a structural diagram of the universal transponder message reading and writing tool system of the present invention;

[0012] Figure 2 Schematic diagram of 9MHz antenna of A5 interface of various transponder models;

[0013] FIG3 is a schematic diagram of the A5 interface antenna of the universal transponder message reading and writing tool;

[0014] Figure 4 Write a flow chart for each transponder model;

[0015] Figure 5 Schematic diagram of the writing process for the universal transponder message writing tool

[0016] Figure 6 Schematic diagram of message extraction process DETAILED DESCRIPTION

[0017] The present invention is described in detail below in conjunction with specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those of ordinary skill in the art, without departing from the inventive concept, several variations and improvements may be made, which all belong to the protection scope of the present invention.

[0018] The embodiment of the present application is based on a universal transponder message reading and writing tool (hereinafter referred to as the reading and writing tool) in kind, the tool includes a management unit and an execution unit, and the system structure is as follows Figure 1 shown.

[0019] The management unit is responsible for providing functions such as user interface, message processing and communication with the execution unit, and is composed of a display module, a message extraction module, a communication module, a process control module and a power module; its human-machine interface is used for operators to interact with the management unit through the display module; the message input interface is used to import message files into the management unit through the message extraction module; the charging / power supply interface is used to provide working power to the management unit through the power module.

[0020] The execution unit is responsible for specific message reading and writing operations, including communication with the transponder and energy transfer, etc. It is composed of a read-write control module, a communication module, a 9M / 27M / 4M antenna module, and a power module. Its interface A5 is the interface for the read-write control module and the 9M / 27M / 4M antenna module of the execution unit to write messages to the transponder; the message reading interface is the interface for the execution unit to read messages from the transponder through the read-write control module and the 27M / 4M antenna module; the charging / power supply interface is used to provide working power to the execution unit through the power module.

[0021] The command interface between the two units, the command and information exchange between the management unit and the execution unit completes the relevant functions through their respective communication modules.

[0022] The main working process is as follows: the operator controls the management unit through the human-machine interface, selects the required operating functions and message data, and the management unit outputs the selected control command information and message data to the execution unit through the communication module; the execution unit controls the internal modules and antennas to complete specific operations based on the received command information and message data, and feeds back the relevant status and message data information to the management unit through the communication module during and after the process.

[0023] This solution is implemented through the following key technologies:

[0024] 1) Transponder identification

[0025] Before writing a message, the operator needs to confirm the transponder model to be written based on the device identification and appearance, and complete the message writing operation after selecting the model in the read-write tool. After the transponder has been used on site for a long time, its identification and appearance may be aged or damaged, making it impossible for the operator to identify the specific transponder model. At this time, the read-write tool can realize transponder identification and message writing in the following ways:

[0026] a) Among the message writing protocols of each transponder model, some protocols will output feedback signals when the transponder enters the message writing function. Therefore, the read-write tool can give priority to trying these writing protocols, identify the specific transponder model through the feedback signal, and select the corresponding protocol to complete the message writing.

[0027] b) If the corresponding protocol is not identified in step a), the transponder can be polled and written by trying the remaining protocols one by one.

[0028] Until the transponder message is written successfully.

[0029] Based on the identification design of the transponder, after adding the function of writing messages compatible with various models of transponders, the operating procedures and user habits of the reading and writing tools are not changed. Through the preliminary model screening according to the protocol feedback signal as described in step a) and the polling exhaustive method as described in step b), the automatic selection of the transponder model is realized, solving the problem of model identification after the transponder appearance is worn.

[0030] 2) A5 interface physical layer compatibility design

[0031] The A5 interface physical layer includes two antennas, 27MHz and 9MHz. The 27MHz antenna reuses the A4 standard interface definition antenna and does not require compatibility design. Therefore, only compatibility analysis and design are required for the 9MHz antenna. Some models of transponders do not have an A5 interface 9MHz antenna. The remaining models of transponders can be divided into "8"-shaped single-loop antennas and polygonal single-loop antennas according to their shapes and characteristics. Due to its unique electromagnetic field directionality and polarization characteristics, the "8"-shaped single-loop antenna must ensure that the transmitting antenna and the receiving antenna match as much as possible in shape and parameters in order to be efficiently activated; the polygonal single-loop antenna has a single electromagnetic field direction and does not have strict matching requirements on the shape and parameters of the transmitting antenna. It can be activated as long as the receiving energy in a single direction is sufficient. Without considering compatibility, these two types of receiving antennas only need to match the transmitting antenna of the corresponding type and similar size to receive enough energy for message writing. For details on the 9M antenna types of each model of transponder, see Figure 2 Type 1 is an "8"-shaped single-loop antenna. The antenna sizes of various transponder models vary. Type 2 is a polygonal single-loop antenna. Type 3 does not have a 9M antenna.

[0032] The A5 interface transmitting antenna of the universal transponder message reading and writing tool should be able to meet the requirements of on-site maintenance work for different types of transponders. Therefore, on the basis of combining the "8"-shaped single-loop antennas of various models, a single-loop transmitting antenna needs to be designed for compatibility. The following specific design scheme can be used to achieve this.

[0033] a) 9MHz antenna design solution 1: only includes the 8-shaped antenna. Under the premise of ensuring sufficient antenna output energy, it is compatible with the polygonal antenna receiving coupling requirements by offset placement with the transponder to adapt to different transponders. The coupling status of the 8-shaped antenna of the read-write tool and the polygonal receiving antenna of the transponder is as follows Figure 3a shown.

[0034] b) 9MHz antenna design solution 2: only includes the 8-shaped antenna. Under the premise of ensuring that the antenna output energy is sufficient, one of the two rectangular antennas of the 8-shaped antenna is selected through circuit control to achieve the coupling requirements with the polygonal antenna reception and adapt to different transponders. The coupling status of the reading and writing tool 8-shaped antenna and the transponder polygonal receiving antenna is shown in the figure below. Figure 3b shown.

[0035] c) 9MHz antenna design solution 3: It includes an 8-shaped antenna and a polygonal antenna. Through circuit control, a certain antenna is selected to adapt to different transponders. The layout of the transponder 8-shaped antenna and polygonal antenna is shown in 3c.

[0036] All of the above solutions can achieve physical layer compatibility of A5 interface antennas, which is the key technical prerequisite for designing and developing universal transponder message reading and writing tools.

[0037] 3) A5 interface protocol compatibility solution

[0038] The operation procedures specified in the protocol level transponder message reading and writing protocols of various models can be summarized into three categories, such as Figure 4 As shown:

[0039] a) Type 1: Use the 9M antenna for writing operations and the 27M and 4M antennas for reading and verification; the read / write control module provides the transponder with energy signals and protocol data during the message writing process by controlling the 9M antenna; provides the transponder with energy signals during message reading by controlling the 27M antenna; and receives message data from the A1 interface by controlling the 4M antenna.

[0040] b) Type 2: Use the 27M antenna for writing operations and the 27M and 4M antennas for reading and verification; the read / write control module provides the transponder with energy signals and protocol data during the message writing process by controlling the 27M antenna; controls the 27M antenna again to provide the transponder with energy signals when reading messages; and terminates the message data from the A1 interface by controlling the 4M antenna.

[0041] c) Type 3: Use 9M and 27M antennas for writing operations, and use 27M and 4M antennas for reading and verification. The read / write control module controls the 9M antenna to provide the transponder with energy signals during the message writing process, and controls the 27M antenna to provide the transponder with protocol data during the message writing process; controls the 27M antenna to provide the transponder with energy signals during message reading; and controls the 4M antenna to terminate the message data from the A1 interface.

[0042] Analyze the above three types of operation processes to form a protocol layer compatibility solution, such as Figure 5As shown. The read-write control module in the scheme needs to control the energy signal and protocol data of both 27M and 9M antennas; because the energy signal output amplitudes are different in different protocols, further amplitude-related detailed parameters, such as output power and modulation depth, need to be adjusted. The power adjustment range needs to meet the upper and lower energy limits required by each protocol, and the modulation depth adjustment range is 50% to 100%; the 4M antenna maintains the existing controllable function and can receive A1 interface message data. The specific design scheme can achieve precise control of the switch, power adjustment, modulation depth and protocol data output of each antenna by designing an RF circuit with a power adjustment interface and a matching programmable logic chip control circuit.

[0043] The physical layer compatible design and the protocol layer compatible solution make the design of universal message reading and writing tools realize the key technical foundation of message compatible reading and writing functions.

[0044] 4) Message file format compatibility solution

[0045] Existing transponder message reading and writing tools of various models can only recognize the corresponding single message file format. When the reading and writing tool described in this solution is used, it can be compatible with the message file formats of various transponder models.

[0046] The reading and writing tools can obtain the transmission message to be written based on the file information of each model or directly use the message extraction function. To ensure the correctness and legality of the extracted transponder transmission message, measures such as file data checksum verification and consistency comparison between the transmission message and the user message can be taken. The message file information extraction function already includes relevant verification functions, which helps to further simplify the verification process and improve the verification efficiency. Its implementation process is as follows Figure 6 As shown, each model message file is imported into the management unit through the message input interface and stored in the internal memory. The management unit can obtain the transmission message information in the message file to be operated by calling the corresponding model message extraction function to complete the message writing related functions.

[0047] Through the above compatibility design, the universal transponder message reading and writing tool can realize message reading, writing and rewriting for transponders of various models.

[0048] The technical effects of the present invention are:

[0049] It does not change existing user habits, does not increase additional operation and learning costs, and can replace dedicated message reading and writing tools.

[0050] Reduce the types of operation and maintenance tools, and reduce equipment procurement, maintenance and management costs;

[0051] It is well compatible with the message writing of various types of transponder equipment currently used in China, thus improving the operation and maintenance efficiency of railway equipment.

[0052] The above embodiments are provided to persons familiar with the art to implement or use the present invention. Personnel familiar with the art may make various modifications or changes to the above embodiments without departing from the inventive concept of the present invention, and these modifications or changes all fall within the protection scope of the present invention.

Claims

1. A universal transponder message reading and writing tool, the tool comprising a management unit and an execution unit, The management unit is responsible for providing functions such as user interface, message processing and communication with the execution unit, and is composed of a display module, a message extraction module, a communication module, a process control module and a power module; The execution unit is responsible for specific message reading and writing operations, including communication with the transponder and energy transfer, etc., and is composed of a read-write control module, a communication module, a 9M / 27M / 4M antenna module, and a power module; The instructions and information exchange between the management unit and the execution unit complete the relevant functions through their respective communication modules; The operator controls the management unit through the human-machine interface and selects the required operating functions and message data. The management unit outputs the selection control instruction information and message data to the execution unit through the communication module; the execution unit controls the internal modules and antenna to complete the specific operation according to the received instruction information and message data, and feeds back the relevant status and message data information to the management unit through the communication module during and after the process.

2. The universal transponder message reading and writing tool according to claim 1, characterized in that: The tool realizes message compatible reading and writing functions by designing compatibility between the physical layer and the protocol layer of the A5 interface.

3. The universal transponder message reading and writing tool according to claim 2, characterized in that: The A5 interface transmitting antenna of the tool can meet the requirements of on-site maintenance work for different types of transponders. On the basis of combining various types of "8"-shaped single-loop antennas, a single-loop transmitting antenna is also compatible with the design, that is, it includes an 8-shaped antenna and a polygonal antenna. A certain antenna is selected through circuit control to adapt to different transponders.

4. The universal transponder message reading and writing tool according to claim 2, characterized in that: The read-write control module of the execution unit can control the energy signals and protocol data of both 27M and 9M antennas, and adjust the output power and modulation depth in different protocols; it maintains the existing controllable functions for the 4M antenna and can receive A1 interface message data.

5. The universal transponder message reading and writing tool according to claim 1, characterized in that: The tool can obtain the transmission message to be written based on the file information of each type of transponder or directly use the message extraction function.

6. The universal transponder message reading and writing tool device according to claim 5, characterized in that: The message files of each model transponder are imported into the management unit through the message input interface and stored in the internal memory. The management unit can obtain the transmission message information in the message file to be operated by calling the corresponding model message extraction function to complete the message writing related functions.

7. The universal transponder message reading and writing tool according to claim 1, characterized in that: Before writing a message, the operator needs to confirm the transponder model to which the message is to be written based on the device identification and appearance, and complete the message writing operation after selecting the model in the read-write tool; when the operator cannot identify the specific transponder model, the automatic selection of the transponder model is achieved through step a) preliminary model screening based on the protocol feedback signal and step b) polling exhaustive method, thereby solving the problem of model identification after the transponder appearance is worn.

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