Transponder message read-write device installed on rail car and message read-write method thereof

Abstract

The invention relates to a transponder message read-write device installed on a rail car and a message read-write method of the transponder message read-write device, and the transponder message read-write device comprises an integrated transponder message read-write and parameter acquisition instrument which performs message write-in and message read-out on a transponder and can acquire an uplink signal sent by the transponder; and the PC controls the message writing and reading of the transponder through operation software, calculates and processes the received uplink signal, calculates the electrical characteristics of the collected uplink signal, realizes the parameter test function of the uplink signal of the transponder, and forms a test report. According to the method and the device, the manual operation intensity of transponder message modification is reduced, the transponder message modification efficiency is improved, and meanwhile, the method and the device have the function of testing the performance of the transponder and can warn the transponder with degraded performance in advance.

Description

Technical Field

[0001] The present invention relates to the technical field of rail transportation, and in particular to a transponder message reading and writing device installed on a rail vehicle and a message reading and writing method thereof. Background Art

[0002] Currently, balise transmission systems are widely used in various rail transit systems as secure point-to-point information transmission systems. A Balise Transmission Module (BTM) and antenna unit transmit wireless energy signals to activate the ground-based balise. Simultaneously, they receive the FSK (Frequency Shift Keying) signal sent by the ground-based balise and recover and extract the message information, enabling information transmission from the ground to the train.

[0003] The ground transponder stores a variety of important driving-related information, including basic line parameters, line speed information, and switch speed limit information. The messages stored in the transponder will be modified before the line is opened or when operations require it. The current common way to modify messages is to manually carry a message reading and writing tool to modify and check each transponder one by one. This method is labor-intensive and prone to omissions and incorrect changes. Transponder parameters may deteriorate on lines with a long operating life. The current common way to deal with this is to manually carry a reading tool to verify the transponder message sending status at the skylight point when a point is lost in operation. This can only test the function of the transponder, but cannot test the electrical characteristics of the transponder uplink signal, so it cannot effectively reflect the electrical characteristics of the transponder.

[0004] Therefore, it is very important to design a transponder message reading and writing device installed on a rail car, which can modify the transponder message and perform parameter testing. Summary of the Invention

[0005] The present invention designs a transponder message reading and writing device installed on a rail vehicle and a message reading and writing method thereof, which solves the technical problem that the manual labor intensity when modifying messages with existing transponders is high, message modifications are omitted, errors often occur, the message modification efficiency is also low, and it is impossible to provide fault warnings for the electrical characteristics of the transponder to prevent faults in advance.

[0006] In order to solve the above-mentioned technical problems, the present invention adopts the following solutions: A transponder message reading and writing device installed on a rail vehicle, comprising an integrated transponder message reading and writing and parameter acquisition instrument and a PC, wherein the integrated transponder message reading and writing and parameter acquisition instrument comprises The power module converts the external DC 24V into an isolated power supply for use by internal modules; Communication module, which realizes bidirectional instruction and data transmission between PC and slave computer, and its interface circuit adopts chip with electrical isolation function; A storage module temporarily stores messages to be written and collected raw signal data; The transponder activates the energy amplification and transmission module, which generates an energy signal, amplifies and modulates it, and then activates the transponder; The transponder uplink signal receiving and acquisition module receives the transponder FSK signal, filters out interference, amplifies it, and samples it using the ADC. Transponder message modulation and transmission module, which generates modulation signals according to control instructions and drives the module to execute message writing; Control module for Receive the transponder number extracted by the transponder uplink signal receiving and acquisition module and the message to be written in the storage module; compare the two numbers for consistency, and if they are consistent, output start / stop and modulation instructions to the transponder activation energy amplification and transmission module and the transponder message modulation and transmission module to perform a message cyclic writing operation; The message reading and writing results and the collected uplink signal data are uploaded to the PC through the communication module.

[0007] Preferably, the control module is further configured to: after completing the message writing, read the message returned by the transponder and compare it with the message to be written, and upload the comparison result and uplink signal electrical characteristic test data to the PC.

[0008] Preferably, a DC-DC module with electrical isolation function is used inside the power module.

[0009] Preferably, the transponder activates the energy amplification and sending module, which turns on the output of the 27.095MHz energy signal required to activate the transponder according to the command output by the control module, and amplifies the energy signal to the required intensity. At the same time, it modulates the energy signal according to the message data output by the transponder message modulation and sending module, and then sends the modulated energy signal to the transponder for activating the transponder and transmitting the message, thereby realizing the message writing function.

[0010] Preferably, the transponder uplink signal receiving and acquisition module passively receives the uplink signal sent by the transponder, and filters out the 27.095MHz energy signal output by the transponder activation energy amplification and transmission module through a filtering circuit, retaining the uplink signal; the transponder uplink signal receiving and acquisition module also amplifies and ADC samples the uplink signal respectively; and sends the uplink signal and sampled data to the control module, which demodulates, decodes and stores the sampled data.

[0011] Preferably, the transponder message modulation and sending module modulates and controls the transponder message data output by the control module, outputs the modulated signal to the transponder activation energy amplification and sending module for amplification and sending, and at the same time selects whether to output the 9.032MHz signal and whether to modulate the signal according to the transponder manufacturer command output by the control module. If the selected transponder manufacturer needs to use the signal, the 9.032MHz signal is modulated and amplified according to the protocol requirements and sent to the transponder.

[0012] Preferably, the transponder activation energy amplification and transmission module is further configured to: select whether to generate a 9.032 MHz signal according to the transponder manufacturer's protocol, and modulate and amplify the signal before transmitting it to the transponder when necessary.

[0013] A message reading and writing method based on a transponder message reading and writing device installed on a rail vehicle comprises the following steps: Step 1: Configuration and startup: Step 1a: Configure the line transponder number sequence or import the setting file through the PC and store the message to be modified; Step 1b: Start the transponder message reader / writer installed on the railcar and select the working mode, modify the message, test parameters, or both; Step 1c: The PC sends the number of each transponder and the message to be modified to the integrated transponder message reader, writer and parameter collector one by one in the configuration order; Step 2: Number comparison and message writing: Step 2a: The integrated transponder message reader / writer and parameter collector continuously radiates a 27.095 MHz energy signal and receives the transponder's FSK signal; Step 2b: When the maintenance vehicle arrives above the transponder, it extracts the transponder number and compares it with the received number to be modified; Step 2c: If the comparison is consistent, the message is written multiple times in a loop according to the protocol; if it is inconsistent, a prompt message is sent to the PC, and the process is re-executed or skipped after manual confirmation; Step 3: Verification and testing: After writing is completed, read the message returned by the transponder and compare it with the message to be written: if they are consistent, generate a successful code writing report; if they are inconsistent, re-execute step 2; synchronously collect the uplink signal and test the electrical characteristics to generate a parameter test report.

[0014] Preferably, the operation of cyclically writing the message three times is performed by the transponder activation energy amplification and transmission module in coordination with the transponder message modulation and transmission module.

[0015] Preferably, the electrical characteristics test is generated by a PC by calculating the uplink signal sampling data according to a preset algorithm.

[0016] The transponder message reading and writing device installed on a rail vehicle and the message reading and writing method thereof have the following beneficial effects: The present invention reduces the manual labor intensity when the transponder modifies the message, reduces the problems of omissions and errors in message modification, and can improve the efficiency of message modification. At the same time, the electrical characteristics of the transponder uplink signal can be tested during the message modification process, and fault warnings can be given for the electrical characteristics of the transponder, so as to prevent faults in advance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 : Schematic diagram of the arrangement of components in a transponder message reading and writing device installed on a rail vehicle according to the present invention; Figure 2 : Schematic diagram of the module composition and connection of the integrated transponder message reading and writing and parameter acquisition instrument in the present invention; Figure 3 : Schematic block diagram of the message reading and writing method of the present invention.

[0018] 1—Transponder; 2—Integrated transponder message reader, writer and parameter collector; 3—PC; 4—Maintenance vehicle. DETAILED DESCRIPTION

[0019] The following combination Figures 1 to 3 , the present invention is further described: like Figure 1 As described above, the transponder message reading and writing device installed on the rail vehicle of the present invention can be used on maintenance vehicles 4 such as engineering vehicles and rail vehicles. The equipment can adapt to a driving speed of less than 30km / h. It includes PC3 and an integrated transponder message reading and writing and parameter acquisition instrument 2, wherein PC3 is placed in the maintenance vehicle 4, and the integrated transponder message reading and writing and parameter acquisition instrument 2 is installed in the center below the vehicle body, and the installation height is 100mm±20mm from the rail surface. The power supply of the integrated transponder message reading and writing and parameter acquisition instrument 2 is provided by DC 24V in the vehicle, and wired communication is used to transmit data and operation commands between PC3 and the integrated transponder message reading and writing and parameter acquisition instrument 2. The transponder 1 is located outside the vehicle, in the center of the ground track.

[0020] An integrated transponder message reader / writer and parameter collector writes and reads messages from the transponder and can collect the uplink signal sent by the transponder. A PC controls the writing and reading of messages from the transponder through operating software, calculates and processes the received uplink signal, calculates the electrical characteristics of the collected uplink signal, implements the transponder uplink signal parameter testing function, and generates a test report. This invention reduces the manual workload of transponder message modification and improves the efficiency of transponder message modification. It also provides a transponder performance test function, providing early warning of transponders experiencing performance degradation.

[0021] like Figure 2 As shown, the transponder message reading and writing device installed on the rail vehicle of the present invention includes a PC and an integrated transponder message reading and writing and parameter acquisition instrument.

[0022] Among them, the integrated transponder message reading, writing and parameter acquisition instrument includes a power module, a communication module, a storage module, a transponder activation energy amplification and transmission module, a transponder uplink signal receiving and acquisition module, a transponder message modulation and transmission module and a control module.

[0023] 1. Power module: The power module converts the external DC24V input into the power required by each internal module. The module uses a DC-DC module with electrical isolation function.

[0024] 2. Communication Module: The communication module's primary function is to transmit control commands, messages, and other information from the PC to the slave computer, while also transmitting processing results, data, and other information from the slave computer to the master computer. This enables data transmission between the master and slave computers. The interface circuit utilizes a chip with electrical isolation. The interface utilizes a wired connection to increase communication speed and reliability.

[0025] 3. Storage Module: The storage module mainly stores the transponder messages sent by the host computer and the uplink signal data collected by the slave computer. The storage module uses a bidirectional parallel port memory chip.

[0026] 4. Transponder activation energy amplification and transmission module: The transponder activation energy amplification and transmission module starts the output of the 27.095MHz energy signal required to activate the transponder according to the command output by the control module, and amplifies the energy signal to the required intensity. At the same time, the energy signal is modulated according to the message data output by the transponder message modulation and transmission module, and the modulated energy signal is sent to the transponder for transponder activation and message transmission, realizing the message writing function.

[0027] 5. Transponder Uplink Signal Receiving and Acquisition Module: This module passively receives the uplink signal sent by the transponder and filters out the 27.095 MHz energy signal output by the transponder activation energy amplification and transmission module through a filtering circuit, retaining the uplink signal. The uplink signal is amplified and sampled by the ADC. The uplink signal and sampled data are sent to the control module, which demodulates, decodes, and stores the sampled data.

[0028] 6. Transponder message modulation and transmission module: The transponder message modulation and transmission module modulates and controls the transponder message data output by the control module, outputs the modulated signal to the transponder activation energy amplification and transmission module for amplification and transmission, and at the same time, selects whether to output the 9.032MHz signal and whether to modulate the signal based on the transponder manufacturer's command output by the control module. If the selected transponder manufacturer requires the use of the signal, the 9.032MHz signal is modulated and amplified according to the protocol requirements and sent to the transponder. Activate the transponder's code writing module and write the message.

[0029] 7. Control module: It is the core of the integrated transponder message reading and writing and parameter acquisition instrument. It receives the control commands of the host computer, transponder manufacturer commands, transponder messages and other information, and demodulates and decodes the messages sent by the transponder, compares the decoded messages with the written messages, and outputs the results to the host computer through the communication module. At the same time, the module also needs to compare the transponder number of the transponder message to be written with the transponder number received on the ground. After the comparison is consistent, it outputs the message writing control command to control the transponder to activate the energy amplification and sending module, the transponder message modulation and sending module, and the transponder message modulation and sending module to write and read back the message, thereby realizing the writing and verification of the message.

[0030] The control module also outputs the uplink signal collected by the transponder uplink signal receiving and collecting module to the host computer through the communication module.

[0031] Computer (PC): The computer uses the host computer software to implement relevant human-machine interface functions and control the slave computers, including message writing, message reading, parameter testing, operation logs, report query, and slave computer settings. The host computer is configured according to the balise settings on the railway line and outputs the balise manufacturer's messages to the slave computers in the configuration order. The computer receives the uplink signal sampled by the slave computer, calculates the signal's electrical characteristics according to the configured algorithm, and generates a test report with the results.

[0032] like Figure 3 As shown, a message reading and writing method of a transponder message reading and writing device installed on a rail vehicle is as follows: Step 1. Use the PC operating software to configure the balise number sequence on the line. This must be done in strict accordance with the direction of rail vehicle operation on the uplink and downlink of the line, or import the line balise setting file, and store the balise message that needs to be modified in a folder in the specified path. After the configuration is complete, the integrated balise message reader / writer and parameter collector can be started to enable message modification and balise test mode. The operating software can be used to select only message modification, only test balise uplink signal parameters, or both. When the device is started, the PC will output the balise message and balise number to be modified to the integrated balise message reader / writer and parameter collector through the communication interface according to the set balise sequence, for identification and message modification of the next balise. Only one balise number and message are transmitted each time. When the PC receives the message modification success command returned by the integrated balise message reader / writer and parameter collector, it will send the next balise number and message to the integrated balise message reader / writer and parameter collector according to the configured order, and execute them in sequence.

[0033] Step 2. After the integrated transponder message reader / writer and parameter collector is activated, it continuously radiates a 27.095MHz energy signal toward the ground to activate the transponder. Simultaneously, the receiving channel continuously receives the uplink signal transmitted by the ground transponder. Upon reaching the transponder, the device detects the transponder and begins demodulating and decoding the uplink signal. It extracts the transponder number from the decoded code elements and compares it with the message number to be modified configured in Step 1. If the comparison results match, the integrated transponder message reader / writer and parameter collector begins modulating the code signal according to the transponder coding protocol and writes the message to the transponder three times in a loop. If the comparison results are inconsistent, a message indicating that the transponder numbers are different is output to the PC. The PC prompts that the transponder information needs to be manually confirmed. After confirmation, the information is manually loaded, and the engineering vehicle repasses over the transponder to perform the corresponding message modification operation. If the manual confirmation confirms that the message does not need to be modified, click "Do not modify message" to stop the message writing operation for the transponder.

[0034] Step 3. After the integrated transponder message reader and parameter collector completes the message writing operation, it executes the message reading task, demodulates and decodes the read message, and then compares the read message with the message configured in step 1. If they are consistent, the successful coding information is sent to the PC, and the PC automatically generates a successful coding report. If they are inconsistent, re-execute the operation in step 2. While reading the transponder message, the integrated transponder message reader and parameter collector will collect the uplink signal sent by the transponder, perform test calculations to obtain the corresponding uplink signal link test results, and send the test results to the PC, which automatically generates a parameter test report.

[0035] The present invention is described above by way of example in conjunction with the accompanying drawings. It is obvious that the implementation of the present invention is not limited to the above-mentioned method. As long as various improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. A transponder message reading and writing device installed on a railcar, comprising an integrated transponder message reading and writing and parameter acquisition instrument and a PC, characterized in that: Integrated transponder message reading and writing and parameter acquisition instrument includes The power module converts the external DC 24V into an isolated power supply for use by internal modules; Communication module, which realizes bidirectional instruction and data transmission between PC and slave computer, and its interface circuit adopts chip with electrical isolation function; A storage module temporarily stores messages to be written and collected raw signal data; The transponder activates the energy amplification and transmission module, which generates an energy signal, amplifies and modulates it, and then activates the transponder; The transponder uplink signal receiving and acquisition module receives the transponder FSK signal, filters out interference, amplifies it, and samples it using the ADC. The transponder message modulation and transmission module generates a modulation signal according to the control instruction and drives the module to execute the message writing; Control module for Receive the transponder number extracted by the transponder uplink signal receiving and acquisition module and the message to be written in the storage module; compare the two numbers for consistency, and if they are consistent, output start / stop and modulation instructions to the transponder activation energy amplification and transmission module and the transponder message modulation and transmission module to perform a message cyclic writing operation; The message reading and writing results and the collected uplink signal data are uploaded to the PC through the communication module.

2. The transponder message reading and writing device installed on a rail vehicle according to claim 1, characterized in that: The control module is further configured to: after completing message writing, read the message returned by the transponder and compare it with the message to be written, and upload the comparison result and uplink signal electrical characteristic test data to the PC.

3. The transponder message reading and writing device installed on a rail vehicle according to claim 1, characterized in that: The power module uses a DC-DC module with electrical isolation function.

4. The transponder message reading and writing device installed on a rail vehicle according to claim 1, characterized in that: The transponder activates the energy amplification and transmission module, which turns on the 27.095MHz energy signal output required to activate the transponder according to the command output by the control module, and amplifies the energy signal to the required intensity. At the same time, it modulates the energy signal according to the message data output by the transponder message modulation and transmission module, and then sends the modulated energy signal to the transponder for transponder activation and message transmission, thereby realizing the message writing function.

5. The transponder message reading and writing device installed on a rail vehicle according to claim 1, characterized in that: The transponder uplink signal receiving and acquisition module passively receives the uplink signal sent by the transponder and filters out the 27.095MHz energy signal output by the transponder activation energy amplification and transmission module through a filtering circuit, retaining the uplink signal; The transponder uplink signal receiving and acquisition modules also amplify and ADC sample the uplink signal respectively; The uplink signal and sampled data are sent to the control module, which performs demodulation, decoding and storage of the sampled data.

6. The transponder message reading and writing device installed on a rail vehicle according to claim 1, characterized in that: The transponder message modulation and sending module modulates and controls the transponder message data output by the control module, and outputs the modulated signal to the transponder activation energy amplification and sending module for amplification and sending. At the same time, it selects whether to output the 9.032MHz signal and whether to modulate the signal according to the transponder manufacturer command output by the control module. If the selected transponder manufacturer needs to use the signal, the 9.032MHz signal is modulated and amplified according to the protocol requirements and sent to the transponder.

7. The transponder message reading and writing device installed on a rail vehicle according to claim 6, characterized in that: The transponder activation energy amplification and transmission module is further used to select whether to generate a 9.032 MHz signal according to the transponder manufacturer's protocol, and to modulate and amplify the signal before sending it to the transponder when necessary.

8. A message reading and writing method based on the transponder message reading and writing device installed on a rail vehicle according to any one of claims 1 to 6, comprising the following steps: Step 1: Configuration and startup: in, Step 1a: Configure the line transponder number sequence through a PC or import a setting file and store the message to be modified; Step 1b: Start the transponder message reader / writer installed on the railcar and select the working mode, modify the message, test parameters, or both; Step 1c: The PC sends the number of each transponder and the message to be modified to the integrated transponder message reader, writer and parameter collector one by one in the configuration order; Step 2: Number comparison and message writing: Step 2a: The integrated transponder message reader / writer and parameter collector continuously radiates a 27.095 MHz energy signal and receives the transponder's FSK signal; Step 2b: When the maintenance vehicle arrives above the transponder, it extracts the transponder number and compares it with the received number to be modified; Step 2c: If the comparison is consistent, the message is written repeatedly according to the protocol cycle; if it is inconsistent, a prompt message is sent to PC (3), and the process is re-executed or skipped after waiting for manual confirmation; Step 3: Verification and testing: After writing is completed, read the message returned by the transponder (1) and compare it with the message to be written: if they are consistent, generate a successful code writing report; if they are inconsistent, repeat step 2; Synchronously collect uplink signals and test electrical characteristics, generating parameter test reports.

9. The method according to claim 8, characterized in that: The operation of writing the message three times in a cycle is performed by the transponder activation energy amplification and transmission module in coordination with the transponder message modulation and transmission module.

10. The method according to claim 8, characterized in that: The electrical characteristics test is generated by PC calculation based on the uplink signal sampling data according to the preset algorithm.

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