A safety switching device, method, equipment and medium for transponder receiving antennas

Abstract

The application relates to a safety switching device, method, equipment and medium of a transponder receiving antenna, which comprises a BTM board card provided with two pieces of redundancy, each of the BTM board cards comprising a radio frequency processing part and a vehicle-mounted antenna; an IO drive sampling board card provided with two pieces of redundancy and used for switching the vehicle-mounted antenna in the BTM board card; a positioning processing board card provided with two pieces of redundancy and used for performing FSK demodulation and descrambling on antenna data transmitted by the BTM board card; and a logic processing board card connected with the IO drive sampling board card and the positioning processing board card respectively and used for sending an antenna switching command to the IO drive sampling board card and processing transponder data sent by the positioning processing board card. Compared with the prior art, the application has the advantages of prolonging the service life of the transponder receiving antenna, reducing the maintenance cost, further improving the stability and reliability of the whole vehicle-mounted safety platform and the like.

Description

Technical Field

[0001] This invention relates to a rail transit signal control system, and more particularly to a safe switching device, method, equipment, and medium for a transponder receiving antenna. Background Technology

[0002] With the rapid development of rail transit and computers, in order to meet the increasing passenger flow and improve train operation efficiency, higher requirements have been put forward for the comprehensive upgrade of train onboard systems. Positioning through onboard antennas and transponders is an important function of onboard systems.

[0003] During train operation, the onboard antenna activates ground transponders by transmitting radio frequency (RF) signals. Once activated by the strong RF signal, the transponder modulates its internal message information into an FSK signal and transmits it through its antenna. The onboard antenna receives the FSK signal and transmits it to the positioning processing module. The positioning processing module processes and demodulates the FSK signal into a digital signal, then performs descrambling and 2oo2 processing before transmitting the user information to the onboard control software, thus completing the entire reception process.

[0004] However, vehicle-mounted antennas need to transmit radio frequency energy signals. Prolonged use will shorten the lifespan of the components, thus affecting the overall usability of the vehicle platform, increasing maintenance costs, and reducing its availability. It also poses certain safety risks.

[0005] A search of Chinese Patent Publication No. CN112671429A reveals a transponder transmission system, specifically comprising two parts: vehicle-mounted equipment and ground equipment. The vehicle-mounted equipment includes an antenna unit and a transponder transmission module, while the ground equipment includes a transponder and a ground electronic unit. The transponder transmission module continuously radiates energy to the ground through the antenna unit. The transponder receives the power radiated by the antenna unit and sends its internal encoded information to the transponder transmission module. The transponder transmission module then sends the received data information to the vehicle-mounted host unit. However, this existing patent does not include transponder antenna switching technology, nor does it address a safe switching technology to extend the lifespan of the transponder receiving antenna. Therefore, developing a switching technology to extend the lifespan of the transponder receiving antenna becomes a technical problem that needs to be solved. Summary of the Invention

[0006] The purpose of this invention is to overcome the defects of the prior art by providing a safe switching device, method, equipment and medium for transponder receiving antennas.

[0007] The objective of this invention can be achieved through the following technical solutions:

[0008] According to a first aspect of the present invention, a secure switching device for a transponder receiving antenna is provided, the device comprising:

[0009] The BTM board has two redundant boards, and each BTM board includes an RF processing section and an automotive antenna.

[0010] The IO driver board has two redundant boards for switching the vehicle antenna within the BTM board.

[0011] The positioning processing board has two redundant boards, which are used to perform FSK demodulation and descrambling on the antenna data transmitted from the BTM board.

[0012] The logic processing board is connected to the IO driver board and the positioning processing board respectively. It is used to send antenna switching commands to the IO driver board and process the transponder data sent by the positioning processing board.

[0013] As a preferred technical solution, each BTM board is connected to two different vehicle-mounted antennas. The radio frequency processing section transmits radio frequency signals through the vehicle-mounted antennas to activate ground transponders as the train passes by. The vehicle-mounted antennas are used to receive FSK signals sent by the activated transponders.

[0014] As a preferred technical solution, each of the IO driver and acquisition boards is equipped with two independent FPGAs for driving and acquiring I / O, and performs 2oo2 processing on the I / O information driven and acquired.

[0015] As a preferred technical solution, the IO driver board switches the antenna by driving the corresponding relay, and ensures successful relay switching by sampling the relay driver.

[0016] As a preferred technical solution, each of the positioning processing boards is equipped with two independent FPGAs for 2oo2 data acquisition processing.

[0017] As a preferred technical solution, the logic processing board is provided with four parts, namely logic processing board 1-A and logic processing board 2-A that form a 2oo2 relationship, and logic processing board 1-B and logic processing board 2-B that form a 2oo2 relationship.

[0018] As a preferred technical solution, the logic processing board-A and the logic processing board-B are redundant.

[0019] As a preferred technical solution, the logic processing board is equipped with speed measurement and positioning platform software, which is used to send drive commands to the I / O drive and acquisition board to switch the relays corresponding to the antennas, perform self-tests on the connected BTM board and determine the antenna selected for this operation based on the self-test results and the previous usage, process the transponder data sent by the positioning processing board, including data verification, descrambling and 2oo2 comparison of data in the two FPGAs, manage the health status of the positioning processing board and provide speed measurement and positioning safety data to the vehicle software.

[0020] As a preferred technical solution, the logic processing board is connected to the IO driver board and the positioning processing board via the M-LVDS bus.

[0021] According to a second aspect of the present invention, a switching method using a security switching device employing the transponder receiving antenna is provided, the method comprising the following steps:

[0022] Step S1: Set the relay to the position corresponding to antenna A via the I / O driver board;

[0023] Step S2: Obtain the relay switching result through the I / O driver board. If the antenna A relay switching is successful, proceed to step S3; if the antenna A relay switching fails or the antenna A self-test fails, proceed to step S4; if the antenna A relay is in the switching process, continue executing step S2.

[0024] Step S3: Process the messages of the positioning processing board 1, select the latest message for inspection. If the inspection passes, the antenna A self-test is successful; otherwise, the antenna A self-test fails and proceed to step S4.

[0025] Step S4: Set the relay to the position corresponding to antenna B via the I / O driver board;

[0026] Step S5: Obtain the relay switching result through the I / O driver board. If the antenna B relay switching is successful, proceed to step S6; if the antenna B relay switching fails or the antenna B self-test fails, proceed to step S7; if the antenna B relay is in the switching process, continue executing step S5.

[0027] Step S6: Process the messages from the positioning processing board 2, select the latest message for inspection. If the inspection passes, the antenna B self-test is successful; otherwise, the antenna B self-test fails and proceed to step S7.

[0028] Step S7: Based on the antenna self-test results, determine which antenna to use.

[0029] As a preferred technical solution, in step S3, the message of the positioning processing board 1 comes from the messages of two FPGAs. If the antenna connection status in the status information of FPGA1 and FPGA2 is OK, it means that the check has passed; otherwise, the check has failed.

[0030] As a preferred technical solution, in step S6, the message of the positioning processing board 2 comes from the messages of two FPGAs. If the antenna connection status in the status information of FPGA1 and FPGA2 is OK, it means that the check has passed; otherwise, the check has failed.

[0031] As a preferred technical solution, step S7 includes four cases, as follows:

[0032] Scenario 1: If antenna A succeeds in its self-test and antenna B succeeds in its self-test;

[0033] Based on the last used antenna identifier stored in the logic processing board:

[0034] If the value is: Antenna A, the relay is set to the position corresponding to antenna B through the I / O driver board;

[0035] If the value is: Antenna B, the relay is set to the position corresponding to antenna A via the I / O driver board;

[0036] If the value is neither antenna A nor antenna B, the relay is set to the position corresponding to antenna A via the I / O driver board;

[0037] Scenario 2: If antenna A succeeds in self-test, antenna B fails in self-test;

[0038] Set the relay to the position corresponding to antenna A using the I / O driver board;

[0039] Scenario 3: If antenna B succeeds in self-test, antenna A fails in self-test;

[0040] Set the relay to the position corresponding to antenna B using the I / O driver board.

[0041] Case 4: If antenna B fails its self-test, antenna A also fails its self-test;

[0042] Using the I / O driver board, the relay selects neither antenna A nor antenna B.

[0043] As a preferred technical solution, the antenna identifier is stored in the NVRAM of the logic processing board.

[0044] According to a third aspect of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to implement the method described thereon.

[0045] According to a fourth aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described thereon.

[0046] Compared with the prior art, the present invention has the following advantages:

[0047] 1) This invention employs a safe switching technology to extend the service life of the transponder receiving antenna, which can improve the service life of the transponder receiving antenna, reduce maintenance costs, and further enhance the stability and reliability of the entire vehicle-mounted safety platform.

[0048] 2) This invention uses two redundant BTM antennas and records the identifier of the currently used antenna in NVRAM. Combined with the self-test results of the two antennas when they are powered on, the two antennas are used reliably and evenly in turn, which extends the service life of the antennas, improves the service life of the entire vehicle platform, and reduces maintenance costs.

[0049] 3) This invention adopts a 2×2oo2 architecture design, and controls the switching of antennas through the I / O driver board to ensure the reliability and security of antenna switching. Attached Figure Description

[0050] Figure 1 This is a schematic diagram of the structure of the device of the present invention;

[0051] Figure 2 This is a flowchart illustrating the specific process of the method of the present invention. Detailed Implementation

[0052] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0053] This invention provides a safe and reliable BTM antenna module switching scheme. It employs redundant BTM receiving modules, secure I / O output acquisition, and combines BTM antenna self-test results. Furthermore, it adopts a 2*2oo2 security architecture to ensure that, under the premise of safety and reliability, the service life of the BTM receiving antenna can be extended by using different antennas in the two separate switching attempts.

[0054] like Figure 1 As shown, the present invention provides a secure switching device for a transponder receiving antenna, the device comprising:

[0055] The BTM board has two redundant boards, and each BTM board includes an RF processing section and an automotive antenna.

[0056] The IO driver board has two redundant boards for switching the vehicle antenna within the BTM board.

[0057] The positioning processing board has two redundant boards, which are used to perform FSK demodulation and descrambling on the antenna data transmitted from the BTM board.

[0058] The logic processing board is connected to the IO driver board and the positioning processing board respectively. It is used to send antenna switching commands to the IO driver board and process the transponder data sent by the positioning processing board.

[0059] The following is a detailed description of each module:

[0060] 1) Two I / O driver cards

[0061] The board contains two independent FPGAs, which are used for I / O driving and acquisition. At the same time, the I / O information driven and acquired is processed by 2oo2 to ensure the security of I / O driving and acquisition.

[0062] Two independent drive and acquisition boards constitute a redundant board, which increases the reliability of I / O drive and acquisition functions.

[0063] Each board contains two FPGAs to implement the 2oo2 function.

[0064] The BTM antenna is selected by driving the corresponding relay through the I / O board, and the relay switching is ensured to be successful by sampling the relay driver, thereby improving the security of antenna switching.

[0065] 2) Two positioning processing boards

[0066] The board contains two independent FPGAs, which are used for the 2oo2 function of data acquisition to ensure the security of the acquired positioning data.

[0067] Two independent positioning acquisition boards constitute a redundant board, which increases the reliability of the acquired positioning data.

[0068] Each FPGA performs FSK demodulation and descrambling on the antenna data transmitted from the BTM board.

[0069] 3) Two BTM boards

[0070] Each BTM board connects to two different BTM antennas.

[0071] The radio frequency processing unit transmits radio frequency signals through the onboard antenna to activate ground transponders as the train passes by.

[0072] The vehicle-mounted antenna is used to receive the FSK signal sent by the activated transponder.

[0073] The BTM module will send the received transponder signals to the transponder processing module for verification and descrambling.

[0074] 4) Four logic processing boards

[0075] Logic processing board 1-A and logic processing board 2-A form a 2oo2 relationship for key data processing.

[0076] Logic processing board 1-B and logic processing board 2-B form a 2oo2 relationship for key data processing.

[0077] Logic processing board-A and logic processing board-B are redundant.

[0078] The logic processing board supplies the speed measurement and positioning platform software and the vehicle software for operation.

[0079] 5) M-LVDS bus

[0080] Two M-LVDS buses are used for communication between boards.

[0081] 6) Speed ​​measurement and positioning platform software

[0082] It is responsible for sending the drive command to the I / O drive board to switch the relay corresponding to the antenna via the M-LVDS bus, and selecting the required BTM board and antenna;

[0083] Perform a self-test on the connected BTM board and antenna;

[0084] Based on the self-test results and the previous usage, the antenna selected for this operation will be determined.

[0085] It is responsible for processing the transponder data sent by the positioning processing board, including data verification, descrambling, and 2oo2 comparison of data in the two FPGAs;

[0086] Responsible for managing the health status of the circuit board;

[0087] Provides speed measurement and location safety data to vehicle software.

[0088] The above is an introduction to the device embodiments. The following method embodiments will further illustrate the solution of the present invention.

[0089] like Figure 2 As shown, the method of the present invention includes the following steps:

[0090] Step S1: Set the relay to the position corresponding to antenna A via the I / O driver board;

[0091] Step S2: Obtain the relay switching result through the I / O driver board. If the antenna A relay switching is successful, proceed to step S3; if the antenna A relay switching fails or the antenna A self-test fails, proceed to step S4; if the antenna A relay is in the switching process, continue executing step S2.

[0092] Step S3: Process the messages of the positioning processing board 1. In the 5th cycle (150ms) of step S3, select the latest message for inspection. If the inspection passes, the antenna A self-test is successful; otherwise, the antenna A self-test fails and proceed to step S4.

[0093] Step S4: Set the relay to the position corresponding to antenna B via the I / O driver board;

[0094] Step S5: Obtain the relay switching result through the I / O driver board. If the antenna B relay switching is successful, proceed to step S6; if the antenna B relay switching fails or the antenna B self-test fails, proceed to step S7; if the antenna B relay is in the switching process, continue executing step S5.

[0095] Step S6: Process the messages from the positioning processing board 2. In the 5th cycle (150ms) of step S6, select the latest message for inspection. If the inspection passes, the antenna B self-test is successful; otherwise, the antenna B self-test fails and proceed to step S7.

[0096] Step S7: Based on the antenna self-test results, determine which antenna to use.

[0097] In step S3, the messages for locating the processing board 1 come from two FPGAs. If the antenna connection status in both FPGA1 and FPGA2 is OK, the check passes; otherwise, the check fails. In step S6, the messages for locating the processing board 2 come from two FPGAs. If the antenna connection status in both FPGA1 and FPGA2 is OK, the check passes; otherwise, the check fails.

[0098] Step S7 includes four scenarios, as follows:

[0099] Scenario 1: If antenna A succeeds in its self-test and antenna B succeeds in its self-test;

[0100] Based on the last used antenna identifier stored in the logic processing board:

[0101] If the value is: Antenna A, the relay is set to the position corresponding to antenna B through the I / O driver board;

[0102] If the value is: Antenna B, the relay is set to the position corresponding to antenna A via the I / O driver board;

[0103] If the value is neither antenna A nor antenna B, the relay is set to the position corresponding to antenna A via the I / O driver board;

[0104] Scenario 2: If antenna A succeeds in self-test, antenna B fails in self-test;

[0105] Set the relay to the position corresponding to antenna A using the I / O driver board;

[0106] Scenario 3: If antenna B succeeds in self-test, antenna A fails in self-test;

[0107] Set the relay to the position corresponding to antenna B using the I / O driver board.

[0108] Case 4: If antenna B fails its self-test, antenna A also fails its self-test;

[0109] Using the I / O driver board, the relay selects neither antenna A nor antenna B.

[0110] Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific structure of the described device can be referred to the corresponding content in the foregoing device embodiments, and will not be repeated here.

[0111] The electronic device of this invention includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in read-only memory (ROM) or loaded from storage units into random access memory (RAM). The RAM may also store various programs and data required for device operation. The CPU, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0112] Multiple components in the device are connected to the I / O interface, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0113] The processing unit executes the various methods and processes described above, such as methods S1 to S7. For example, in some embodiments, methods S1 to S7 may be implemented as computer software programs tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of methods S1 to S7 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute methods S1 to S7 by any other suitable means (e.g., by means of firmware).

[0114] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0115] The program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0116] In the context of this invention, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0117] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A switching method using a secure switching device employing a transponder receiving antenna, characterized in that, The device includes: The BTM board has two redundant boards, and each BTM board includes an RF processing section and an automotive antenna. The IO driver board has two redundant boards for switching the vehicle antenna within the BTM board. The positioning processing board has two redundant boards, which are used to perform FSK demodulation and descrambling on the antenna data transmitted from the BTM board. The logic processing board is connected to the IO driver board and the positioning processing board respectively. It is used to send antenna switching commands to the IO driver board and process the transponder data sent by the positioning processing board. The switching method includes the following steps: Step S1: Set the relay to the position corresponding to antenna A via the I / O driver board; Step S2: Obtain the relay switching result through the I / O driver board. If the antenna A relay switching is successful, proceed to step S3; if the antenna A relay switching fails or the antenna A self-test fails, proceed to step S4; if the antenna A relay is in the switching process, continue executing step S2. Step S3: Process the messages of the positioning processing board 1, select the latest message for inspection. If the inspection passes, the antenna A self-test is successful; otherwise, the antenna A self-test fails and proceed to step S4. Step S4: Set the relay to the position corresponding to antenna B via the I / O driver board; Step S5: Obtain the relay switching result through the I / O driver board. If the antenna B relay switching is successful, proceed to step S6; if the antenna B relay switching fails or the antenna B self-test fails, proceed to step S7; if the antenna B relay is in the switching process, continue executing step S5. Step S6: Process the messages from the positioning processing board 2, select the latest message for inspection. If the inspection passes, the antenna B self-test is successful; otherwise, the antenna B self-test fails and proceed to step S7. Step S7: Based on the antenna self-test results, determine which antenna to use.

2. The method according to claim 1, characterized in that, Each BTM board is connected to two different vehicle-mounted antennas. The radio frequency processing section transmits radio frequency signals through the vehicle-mounted antennas to activate ground transponders as the train passes by. The vehicle-mounted antennas are used to receive FSK signals sent by the activated transponders.

3. The method according to claim 1, characterized in that, Each of the aforementioned IO driver and acquisition boards has two independent FPGAs for driving and acquiring I / O, and performs 2oo2 processing on the I / O information driven and acquired.

4. The method according to claim 1, characterized in that, The IO driver board switches the antenna by driving the corresponding relay, and ensures successful relay switching by sampling the relay driver.

5. The method according to claim 1, characterized in that, Each of the positioning processing boards is equipped with two independent FPGAs for 2oo2 processing of data acquisition.

6. The method according to claim 1, characterized in that, The logic processing board consists of four boards: logic processing board 1-A and logic processing board 2-A, which form a 2oo2 relationship, and logic processing board 1-B and logic processing board 2-B, which also form a 2oo2 relationship.

7. The method according to claim 6, characterized in that, The logic processing board-A and logic processing board-B are redundant.

8. The method according to claim 6, characterized in that, The logic processing board includes speed measurement and positioning platform software, which sends drive commands to the I / O drive acquisition board to switch the relays corresponding to the antennas, performs self-tests on the connected BTM board and determines the antenna selected for this operation based on the self-test results and the previous usage. It is responsible for processing the transponder data sent by the positioning processing board, including data verification, descrambling, and 2oo2 comparison of data in the two FPGAs. It is also responsible for the health status management of the positioning processing board and providing speed measurement and positioning safety data to the vehicle software.

9. The method according to claim 1, characterized in that, The logic processing board is connected to the IO driver board and the positioning processing board via the M-LVDS bus.

10. The method according to claim 1, characterized in that, In step S3, the message from the location processing board 1 comes from two FPGAs. If the antenna connection status in the status information of FPGA1 and FPGA2 is OK, it means that the check has passed; otherwise, the check has failed.

11. The method according to claim 1, characterized in that, In step S6, the message from the location processing board 2 comes from two FPGAs. If the antenna connection status in the status information of FPGA1 and FPGA2 is OK, it means that the check has passed; otherwise, the check has failed.

12. The method according to claim 1, characterized in that, Step S7 includes four scenarios, as follows: Scenario 1: If antenna A succeeds in its self-test and antenna B succeeds in its self-test; Based on the last used antenna identifier stored in the logic processing board: If the value is: Antenna A, set the relay to the position corresponding to antenna B through the I / O driver board; If the value is: Antenna B, the relay is set to the position corresponding to antenna A via the I / O driver board; If the value is neither antenna A nor antenna B, the relay is set to the position corresponding to antenna A via the I / O driver board; Scenario 2: If antenna A succeeds in self-test, antenna B fails in self-test; Set the relay to the position corresponding to antenna A using the I / O driver board; Scenario 3: If antenna B succeeds in self-test, antenna A fails in self-test; Set the relay to the position corresponding to antenna B using the I / O driver board. Case 4: If antenna B fails its self-test, antenna A also fails its self-test; Using the I / O driver board, the relay selects neither antenna A nor antenna B.

13. The method according to claim 12, characterized in that, The antenna identifier is stored in the NVRAM of the logic processing board.

14. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the program, it implements the method as described in any one of claims 1 to 13.

15. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method as described in any one of claims 1 to 13.

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