Distributed remote centralized control type locomotive signal code sending system and testing method thereof

Abstract

The invention discloses a distributed remote centralized control type locomotive signal code sending system and a testing method thereof, and belongs to the technical field of locomotive signal testing, and the distributed remote centralized control type locomotive signal code sending system comprises a locomotive signal code sending control host module, a distributed locomotive signal code sending module and a locomotive signal receiving information feedback terminal module. Through the arrangement of the plurality of distributed locomotive signal code sending modules, the code sending loop wire can be directly led out from the distributed locomotive signal code sending modules and does not need to be led out from the locomotive signal code sending control host module, so that the length of the code sending loop wire is greatly shortened, interference caused by overlong wiring is avoided, and the code sending quality is remarkably improved; meanwhile, the locomotive signal receiving information feedback terminal module generates a test information feedback signal according to the received locomotive signal, and feeds back the test information feedback signal to the corresponding distributed locomotive signal code sending module, so that an effective test information feedback closed loop is formed, the digital test of the locomotive signal receiving state is realized, and the test efficiency is greatly improved.

Description

Technical Field

[0001] This invention belongs to the field of locomotive signal testing technology, specifically relating to a distributed, remotely centralized control locomotive signal coding system and its testing method. Background Technology

[0002] In the current field of locomotive signal testing technology, traditional locomotive signal coding devices mainly rely on directly generating track circuit signals within the device, and then transmitting the signals to the target area via long connecting lines and track loops. This seemingly direct approach has revealed a series of significant drawbacks in practical applications, severely restricting the overall performance and testing efficiency of locomotive signal coding devices.

[0003] From an anti-interference perspective, long connecting lines and track loops act like vulnerable channels exposed to a complex electromagnetic environment, highly susceptible to external electromagnetic interference. In locomotive maintenance scenarios, the surrounding environment is filled with various electromagnetic signal sources, such as high-voltage transmission lines, communication base stations, and other electronic equipment. The electromagnetic waves generated by these interference sources superimpose with the signals transmitted by the coding device, leading to signal distortion. More seriously, the situation worsens when multiple locomotives are simultaneously stationed on the track loop. Each locomotive's signal induction coil, while receiving signals, also generates reverse interference signals. These reverse interference signals couple through the track loop, further exacerbating the already fragile signal quality, ultimately resulting in signal quality failing to meet standard requirements. Substandard signal quality directly affects the normal operation of the locomotive signal receiving equipment, preventing testers from accurately testing the locomotive signal system according to established standards, posing a potential risk to transportation safety.

[0004] In terms of testing efficiency, traditional methods also have significant shortcomings. The manual inspection process for locomotive signal reception is cumbersome and time-consuming, requiring inspectors to wait for signal reception for extended periods while closely monitoring changes in various signal parameters. This highly manual operation is not only labor-intensive but also susceptible to human factors such as fatigue and lack of concentration, leading to errors in the test results. Furthermore, due to the low testing efficiency, the maintenance and repair cycle of the entire locomotive signaling system is forced to be extended, further impacting the efficiency and effectiveness of railway transportation.

[0005] As mentioned above, how to provide a distributed remote centralized control locomotive signal coding system and its testing method with strong anti-interference capabilities and effective improvement of testing efficiency has become an urgent problem to be solved. Summary of the Invention

[0006] The purpose of this invention is to provide a distributed, remotely centralized control locomotive signal coding system to solve the aforementioned problems in the prior art.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides a distributed remote centralized control locomotive signal coding system, comprising: a locomotive signal coding control host module, a distributed locomotive signal coding module, and a locomotive signal receiving information feedback terminal module; The power supply output terminal of the locomotive signal coding control host module is electrically connected to the power supply input terminal of the distributed locomotive signal coding module. The coding control signal output terminal of the locomotive signal coding control host module is communicatively connected to the coding control signal receiving terminal of the distributed locomotive signal coding module. The coding terminal of the distributed locomotive signal coding module is communicatively connected to related equipment of the locomotive signal system. The related equipment of the locomotive signal system includes onboard equipment installed in the locomotive for receiving signals. The test information feedback terminal of the locomotive signal receiving information feedback terminal module is communicatively connected to the test information feedback signal receiving terminal of the distributed locomotive signal coding module, and the test data sending terminal of the distributed locomotive signal coding module is communicatively connected to the test data receiving terminal of the locomotive signal coding control host module. The locomotive signal coding control host module is used to generate coding control signals, supply power to the distributed locomotive signal coding module, and receive test data and test result information to visualize the test data and test result information. The distributed locomotive signal coding module is used to send codes to the relevant equipment of the locomotive signal system, and is also used to receive test information feedback signals from the locomotive signal receiving information feedback terminal module for data analysis and to generate test result information. The distributed locomotive signal coding module includes multiple modules, and each distributed locomotive signal coding module is respectively set at each preset test position on the locomotive track. The locomotive signal receiving information feedback terminal module is used to receive locomotive signals fed back by relevant equipment of the locomotive signal system in order to generate test information feedback signals.

[0008] In one possible design, the locomotive signal code generation control host module includes a display unit, a communication main control unit, a first power line carrier communication unit, and a first isolation transformer unit; The communication master control unit is electrically connected to the first power line carrier communication unit, and the first power line carrier communication unit is electrically connected to the code transmission control signal receiving end of the distributed locomotive signal code transmission module through the first isolation transformer unit. The communication master control unit is used to generate a code transmission control signal and send the code transmission control signal to the code transmission control signal receiving end of the distributed locomotive signal transmission module through the first power line carrier communication unit and the first isolation transformer unit. It is also used to obtain test result information from the test data sending end of the distributed locomotive signal transmission module. The code transmission control signal includes code transmission parameter information.

[0009] In one possible design, the locomotive signal coding control host module also includes a lightning protection circuit unit and a test data printing unit; The lightning protection circuit unit is located at the output terminal of the code transmission control signal of the locomotive signal code transmission control host module and is electrically connected to the first isolation transformer unit, and the test data printing unit is electrically connected to the communication main control unit. The lightning protection circuit unit is used to provide overcurrent protection for the locomotive signal coding control host module; The test data printing unit is used to receive the printing start signal sent by the communication master control unit and print the test result information.

[0010] In one possible design, the surge protection circuit unit includes a semiconductor discharge tube, a three-terminal ceramic gas discharge tube, and an overcurrent protection circuit, and the test data printing unit includes an embedded thermal printer. The communication master control unit is electrically connected to the input terminal of the overcurrent protection circuit through the first isolation transformer unit. The output terminal of the overcurrent protection circuit is electrically connected to the input terminal of the semiconductor discharge tube. The output terminal of the semiconductor discharge tube is electrically connected to the input terminal of the three-terminal ceramic gas discharge tube. The output terminal of the three-terminal ceramic gas discharge tube is electrically connected to the power line carrier output terminal of the first power line carrier communication unit. The print start signal output terminal of the communication master control unit is electrically connected to the print start signal input terminal of the embedded thermal printer.

[0011] In one possible design, the distributed locomotive signal coding module includes a first main control circuit unit, a first communication circuit unit, a first track circuit signal generation unit, a first power amplification unit, a first true RMS current acquisition unit, a second power line carrier communication unit, a second isolation transformer unit, a locomotive sensing unit, and a distributed loop. The first main control circuit unit is electrically connected to the first communication circuit unit, the second power line carrier communication unit, the first track circuit signal generation unit, the first power amplification unit, the first true RMS current acquisition unit, and the locomotive sensing unit. The power line carrier input terminal of the second power line carrier communication unit is electrically connected to the code transmission control signal output terminal of the locomotive signal code transmission control host module through the second isolation transformer unit. The signal output terminal of the first track circuit signal generation unit is electrically connected to the distributed loop through the first power amplification unit and the first true RMS current acquisition unit. The locomotive sensing signal output terminal of the locomotive sensing unit is electrically connected to the first main control circuit unit. The first main control circuit unit is communicatively connected to the test information feedback terminal of the locomotive signal receiving information feedback terminal module through the first communication circuit unit. The first communication circuit unit is used to receive the test information feedback signal and send the test information feedback signal to the first main control circuit unit for data analysis to generate test result information. The first main control circuit unit sends the test result information to the test data receiving end of the locomotive signal code generation control host module through the second power line carrier communication unit. The first track circuit signal generation unit is used to obtain an AC current signal generation instruction from the first main control circuit unit, and generate a pre-track circuit signal according to the AC current signal generation instruction; The first power amplifier unit is used to amplify the pre-track circuit signal and form a track circuit signal; The first true RMS current acquisition unit is used to acquire loop current from the distributed loop; The distributed loop is used to send the track circuit signals to the relevant equipment of the locomotive signaling system; The locomotive sensing unit is used to acquire real-time locomotive relative distance information and send the real-time locomotive relative distance information to the first main control circuit unit.

[0012] In one possible design, the locomotive sensing unit includes a Hall sensor, an ultrasonic sensor, and a magnetoelectric sensor; The Hall sensor, the ultrasonic sensor, and the magnetoelectric sensor are all independently configured and electrically connected to the first main control circuit unit.

[0013] In one possible design, the locomotive signal receiving information feedback terminal module includes a test information feedback signal generation unit, a wireless communication unit, and a wired communication unit; The test information feedback signal generation unit is electrically connected to the relevant equipment of the locomotive signal system through the wired communication unit. The wired communication unit is used to receive the locomotive signal sent by the relevant equipment of the locomotive signal system and send the locomotive signal to the test information feedback signal generation unit to generate a test information feedback signal. The test information feedback signal generation unit sends the test information feedback signal to the test information feedback signal receiving end of the distributed locomotive signal coding module through the wireless communication unit.

[0014] One possible design also includes a portable locomotive signal transponder module: The locomotive signal code generation control host module is also communicatively connected to the code generation control signal receiving end of the portable locomotive signal code generation module, and the code generation end of the portable locomotive signal code generation module is communicatively connected to the relevant equipment of the locomotive signal system.

[0015] In one possible design, the portable locomotive signal coding module includes an independent power supply unit, a second main control circuit unit, a second communication circuit unit, a second track circuit signal generation unit, a second power amplification unit, a second true RMS current acquisition unit, and a simple distributed loop. The independent power supply unit is electrically connected to the second main control circuit unit. The second main control circuit unit is electrically connected to the second communication circuit unit, the second track circuit signal generation unit, the second power amplification unit, and the second true RMS current acquisition unit. The signal input terminal of the second communication circuit unit is electrically connected to the code control signal output terminal of the locomotive signal code generation control host module. The signal output terminal of the second track circuit signal generation unit is electrically connected to the simplified distribution loop through the second power amplification unit. The acquisition terminal of the second true RMS current acquisition unit is electrically connected to the simplified distribution loop. The second main control circuit unit is communicatively connected to the test information feedback terminal of the locomotive signal receiving information feedback terminal module through the second communication circuit unit. The second communication circuit unit is used to receive the test information feedback signal and send the test information feedback signal to the second main control circuit unit for data analysis to generate test result information. The second main control circuit unit sends the test result information to the test data receiving end of the locomotive signal coding control host module through the second communication circuit unit. The second track circuit signal generation unit is used to obtain an AC current signal generation instruction from the second main control circuit unit, and generate a pre-track circuit signal according to the AC current signal generation instruction; The second power amplifier unit is used to amplify the pre-track circuit signal and form a track circuit signal; The second true RMS current acquisition unit is used to acquire loop current from the simplified distributed loop; The simplified distribution loop is used to send the track circuit signals to the relevant equipment of the locomotive signaling system.

[0016] In a second aspect, the present invention provides a test method for a distributed remote centralized control locomotive signal coding system, used to test the distributed remote centralized control locomotive signal coding system as described in any one of the first aspects, comprising: The distributed locomotive signal coding module obtains a coding control signal from the locomotive signal coding control host module, and obtains real-time locomotive relative distance information through the distributed locomotive signal coding module. When the real-time locomotive relative distance information meets the coding distance threshold, the distributed locomotive signal coding module sends track circuit signals to the relevant equipment of the locomotive signal system. The coding distance threshold is used to represent the maximum relative distance between the locomotive and the distributed locomotive signal coding module. After receiving the corresponding track circuit signals, the relevant equipment of the locomotive signaling system generates the corresponding locomotive signals and sends the locomotive signals to the locomotive signal receiving information feedback terminal module via wired communication. The locomotive signal receiving information feedback terminal module parses the locomotive signals and sends a communication pairing request to the corresponding distributed locomotive signal coding module to complete the pairing. Once pairing is complete, the locomotive signal receiving information feedback terminal module generates a corresponding test information feedback signal and sends the test information feedback signal to the distributed locomotive signal transmitting module through the test information feedback terminal of the locomotive signal receiving information feedback terminal module. The distributed locomotive signal coding module receives test information feedback signals and performs data analysis on the test information feedback signals to generate test result information. The test result information is then sent to the locomotive signal coding control host module through the test data sending end of the distributed locomotive signal coding module. The locomotive signal code control host module receives test data and test result information and visualizes the test data and test result information.

[0017] Beneficial Effects: This invention provides a distributed, remotely centralized control locomotive signal coding system, including a locomotive signal coding control host module, a distributed locomotive signal coding module, and a locomotive signal receiving information feedback terminal module. The power supply output of the locomotive signal coding control host module is electrically connected to the power supply input of the distributed locomotive signal coding module; the coding control signal output of the locomotive signal coding control host module is communicatively connected to the coding control signal receiving end of the distributed locomotive signal coding module; and the coding end of the distributed locomotive signal coding module is communicatively connected to relevant equipment of the locomotive signal system. The test information feedback end of the locomotive signal receiving information feedback terminal module is communicatively connected to the test information feedback signal receiving end of the distributed locomotive signal coding module; and the test data sending end of the distributed locomotive signal coding module is communicatively connected to the locomotive signal system. The locomotive signal coding control host module is a test data receiving terminal. It generates coding control signals, supplies power to the distributed locomotive signal coding module, and receives test data and test result information for visualization. The distributed locomotive signal coding module sends codes to related equipment of the locomotive signal system and receives test information feedback signals from the locomotive signal reception feedback terminal module for data analysis and to generate test result information. Multiple distributed locomotive signal coding modules are included, each positioned at a preset test location on the locomotive track. The locomotive signal reception feedback terminal module receives locomotive signals from related equipment of the locomotive signal system to generate test information feedback signals. By setting up multiple distributed locomotive signal coding modules, the coding loop can be directly led out from the distributed locomotive signal coding modules without needing to be led out from the locomotive signal coding control host module. Therefore, the length of the coding loop is greatly shortened, avoiding interference caused by excessively long wiring, and significantly improving the coding quality. At the same time, the locomotive signal receiving information feedback terminal module generates test information feedback signals based on the received locomotive signals and feeds them back to the corresponding distributed locomotive signal coding modules, forming an effective test information feedback closed loop. This realizes the digital testing of the locomotive signal receiving status and greatly improves testing efficiency. Attached Figure Description

[0018] Figure 1 A schematic diagram of the functional structure of the distributed remote centralized control locomotive signal coding system provided in an embodiment of the present invention; Figure 2 A schematic diagram illustrating the communication connection method of the distributed remote centralized control locomotive signal coding system provided in this embodiment of the invention; Figure 3This is a functional structure diagram of the locomotive signal code generation control host module provided in an embodiment of the present invention; Figure 4 A circuit connection diagram of the lightning protection circuit unit provided in an embodiment of the present invention; Figure 5 This is a functional structure diagram of the distributed locomotive signal coding module provided in an embodiment of the present invention; Figure 6 This is a functional structure diagram of the locomotive sensing unit provided in an embodiment of the present invention; Figure 7 This is a functional structure diagram of the locomotive signal receiving information feedback terminal module provided in an embodiment of the present invention; Figure 8 This is a schematic diagram of the system topology connection between the distributed locomotive signal coding module and the portable locomotive signal coding module provided in an embodiment of the present invention; Figure 9 This is a functional structure diagram of the portable locomotive signal coding module provided in an embodiment of the present invention; Figure 10 A flowchart illustrating the steps of a test method for a distributed remote centralized control locomotive signal coding system provided in an embodiment of the present invention. Detailed Implementation

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the present invention will be briefly introduced below in conjunction with the accompanying drawings and descriptions of the embodiments or the prior art. Obviously, the following description of the structure of the accompanying drawings is only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. It should be noted that the description of these embodiments is for the purpose of helping to understand the present invention, but does not constitute a limitation of the present invention.

[0020] It should be understood that although the terms first, second, etc., may be used herein to describe various units, these units should not be limited by these terms. These terms are only used to distinguish one unit from another. For example, a first unit may be referred to as a second unit, and similarly, a second unit may be referred to as a first unit, without departing from the scope of the exemplary embodiments of the invention.

[0021] It should be understood that the term "and / or" that may appear in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" that may appear in this document describes another relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " that may appear in this document generally indicates that the related objects before and after it are in an "or" relationship.

[0022] Example: like Figure 1 As shown, the first aspect of this embodiment provides a distributed remote centralized control locomotive signal coding system, including: a locomotive signal coding control host module, a distributed locomotive signal coding module, and a locomotive signal receiving information feedback terminal module; The power supply output terminal of the locomotive signal code generation control host module is electrically connected to the power supply input terminal of the distributed locomotive signal code generation module, the code generation control signal output terminal of the locomotive signal code generation control host module is communicatively connected to the code generation control signal receiving terminal of the distributed locomotive signal code generation module, and the code generation terminal of the distributed locomotive signal code generation module is communicatively connected to related equipment of the locomotive signal system. The test information feedback terminal of the locomotive signal receiving information feedback terminal module is communicatively connected to the test information feedback signal receiving terminal of the distributed locomotive signal coding module, and the test data sending terminal of the distributed locomotive signal coding module is communicatively connected to the test data receiving terminal of the locomotive signal coding control host module. The locomotive signal coding control host module is used to generate coding control signals, supply power to the distributed locomotive signal coding module, and receive test data and test result information to visualize the test data and test result information. The distributed locomotive signal coding module is used to send codes to the relevant equipment of the locomotive signal system, and is also used to receive test information feedback signals from the locomotive signal receiving information feedback terminal module for data analysis and to generate test result information. The distributed locomotive signal coding module includes multiple modules, and each distributed locomotive signal coding module is respectively set at each preset test position on the locomotive track. The locomotive signal receiving information feedback terminal module is used to receive locomotive signals fed back by relevant equipment of the locomotive signal system in order to generate test information feedback signals.

[0023] like Figure 2As shown, in one possible implementation, the locomotive signal code generation control host module includes a display unit, a communication main control unit, a first power line carrier communication unit, and a first isolation transformer unit; The communication master control unit is electrically connected to the first power line carrier communication unit, and the first power line carrier communication unit is electrically connected to the code transmission control signal receiving end of the distributed locomotive signal code transmission module through the first isolation transformer unit. The communication master control unit is used to generate a code transmission control signal and transmit the code transmission control signal to the code transmission control signal receiving end of the distributed locomotive signal code transmission module through the first power line carrier communication unit and the first isolation transformer unit. It is also used to obtain test result information from the test data transmitting end of the distributed locomotive signal code transmission module. The code transmission control signal includes code transmission parameter information. The communication master control unit is also used to store and query the test result information and can communicate with external devices.

[0024] It should be noted that the track circuit signal described in this embodiment is a current signal with a certain frequency. The track circuit signal is a signal that uses the railway rails as a transmission medium to continuously check the vacancy and locomotive occupation of the section and transmit train operation control signals. This is the basic function of the track circuit signal itself. In this embodiment, the track circuit signal simulated by the distributed locomotive signal coding module through the distributed coding loop is given a new definition. The transmission of the track circuit signal cleverly uses the transmission of the track circuit signal to transmit the information of the distributed locomotive signal coding module ID number. This is particularly important for digital testing because only by recognizing the distributed locomotive signal coding module ID number can wireless communication pairing be achieved, and only then can digital testing be achieved.

[0025] In practical applications, the distributed locomotive signal coding module in this embodiment mainly functions to send codes to the relevant equipment of the locomotive signal system and transmit track circuit signals during the locomotive signal testing process. The purpose of setting each of the distributed locomotive signal coding modules at each preset test position on the locomotive track is to shorten the loop distance and reduce interference. The locomotive sensing module inside is used to detect the relative distance between locomotives in real time, so as to realize digital testing.

[0026] like Figure 3 As shown, in one possible implementation, the locomotive signal code generation control host module further includes a lightning protection circuit unit and a test data printing unit; The lightning protection circuit unit is located at the output terminal of the code transmission control signal of the locomotive signal code transmission control host module and is electrically connected to the first isolation transformer unit, and the test data printing unit is electrically connected to the communication main control unit. The lightning protection circuit unit is used to provide overcurrent protection for the locomotive signal coding control host module; The test data printing unit is used to receive the printing start signal sent by the communication master control unit and print the test result information.

[0027] It should be noted that, in actual implementation scenarios, the distributed locomotive signal coding module in the locomotive signal coding system provided in this embodiment can be set up near the track in the locomotive signal testing area. By setting up multiple distributed locomotive signal coding modules, the coding loop can be directly led out from the distributed locomotive signal coding module, without needing to be led out from the locomotive signal coding control host module. Therefore, the length of the coding loop is significantly shortened, avoiding interference caused by excessively long wiring, and resulting in a significant improvement in coding quality. Simultaneously, the setting up of the distributed locomotive signal coding module eliminates the limitation on the number of leading coding loops for the locomotive signal coding control host module, thus allowing a single locomotive signal coding control host module to operate more efficiently. The module can control and transmit signals to multiple distributed locomotive signal coding modules, saving the consumption of the locomotive signal coding control host module and greatly reducing system costs. In addition, multiple distributed locomotive signal coding modules are set up in sections of the same test track, which enhances the targeting and correlation of track circuit signal transmission and locomotive signal reception feedback signals during testing. The locomotive signal reception feedback terminal module generates test information feedback signals based on the received locomotive signals and feeds them back to the corresponding distributed locomotive signal coding modules, forming an effective test information feedback closed loop. This realizes digital testing of locomotive signal reception status and greatly improves testing efficiency.

[0028] In one possible implementation, the lightning protection circuit unit includes a semiconductor discharge tube, a three-terminal ceramic gas discharge tube, and an overcurrent protection circuit, and the test data printing unit includes an embedded thermal printer. The communication master control unit is electrically connected to the input terminal of the overcurrent protection circuit through the first isolation transformer unit. The output terminal of the overcurrent protection circuit is electrically connected to the input terminal of the semiconductor discharge tube. The output terminal of the semiconductor discharge tube is electrically connected to the input terminal of the three-terminal ceramic gas discharge tube. The output terminal of the three-terminal ceramic gas discharge tube is electrically connected to the power line carrier output terminal of the first power line carrier communication unit. The print start signal output terminal of the communication master control unit is electrically connected to the print start signal input terminal of the embedded thermal printer.

[0029] It should be noted that, as Figure 4As shown, the lightning protection circuit unit provided in this embodiment is the core protection module that ensures the safe operation of the system under lightning strikes or surge voltages. It forms triple protection through the grounding protection of the semiconductor discharge tube, the discharge protection of the three-terminal ceramic gas discharge tube TV1, and the overcurrent protection circuit (i.e., the self-resetting fuses F1 and F2 in the figure). In possible implementations, multiple lightning protection circuit units can be set, which can be set in the locomotive signal coding control host module, the distributed locomotive signal coding module, and the portable locomotive signal coding module to ensure the safe implementation of the system.

[0030] like Figure 5 As shown, in one possible implementation, the distributed locomotive signal coding module includes a first main control circuit unit, a first communication circuit unit, a first track circuit signal generation unit, a first power amplification unit, a first true RMS current acquisition unit, a second power line carrier communication unit, a second isolation transformer unit, a locomotive sensing unit, and a distributed loop. The first main control circuit unit is electrically connected to the first communication circuit unit, the second power line carrier communication unit, the first track circuit signal generation unit, the first power amplification unit, the first true RMS current acquisition unit, and the locomotive sensing unit. The power line carrier input terminal of the second power line carrier communication unit is electrically connected to the code transmission control signal output terminal of the locomotive signal code transmission control host module through the second isolation transformer unit. The signal output terminal of the first track circuit signal generation unit is electrically connected to the distributed loop through the first power amplification unit and the first true RMS current acquisition unit. The locomotive sensing signal output terminal of the locomotive sensing unit is electrically connected to the first main control circuit unit. The first main control circuit unit is communicatively connected to the test information feedback terminal of the locomotive signal receiving information feedback terminal module through the first communication circuit unit. The first communication circuit unit is used to receive the test information feedback signal and send the test information feedback signal to the first main control circuit unit for data analysis to generate test result information. The first main control circuit unit sends the test result information to the test data receiving end of the locomotive signal coding control host module through the second power line carrier communication unit. The first track circuit signal generation unit is used to obtain an AC current signal generation instruction from the first main control circuit unit, and generate a pre-track circuit signal according to the AC current signal generation instruction; The first power amplifier unit is used to amplify the pre-track circuit signal and form a track circuit signal; The first true RMS current acquisition unit is used to acquire loop current from the distributed loop; The distributed loop is used to send the track circuit signals to the relevant equipment of the locomotive signaling system; The locomotive sensing unit is used to acquire real-time locomotive relative distance information and send the real-time locomotive relative distance information to the first main control circuit unit.

[0031] It should be noted that, in a possible implementation, the first true RMS current acquisition unit can be communicatively connected to an external alarm module, which is used to issue an alarm signal when an abnormal loop current is detected. The first true RMS current acquisition unit detects the current in order to adjust the output power to stabilize the current value. In this embodiment, the first true RMS current acquisition unit actually acquires the loop current from the distributed loop through the induction of the current transformer.

[0032] In actual digital testing, when the distributed locomotive signal coding module senses that the locomotive has entered the preset test area, it sends additional defined track circuit signals. Correspondingly, after the locomotive signal receiving information feedback terminal module recognizes the signals, it sends a handshake message with an identification code (that is, a communication pairing request) to establish a unique communication connection with the current distributed coding module. Only after establishing a unique communication connection can the digital testing function be realized.

[0033] like Figure 6 As shown, in one possible implementation, the locomotive sensing unit includes a Hall sensor, an ultrasonic sensor, and a magnetoelectric sensor. The Hall sensor, the ultrasonic sensor, and the magnetoelectric sensor are all independently configured and electrically connected to the first main control circuit unit.

[0034] like Figure 7 As shown, in one possible implementation, the locomotive signal receiving information feedback terminal module includes a test information feedback signal generation unit, a wireless communication unit, and a wired communication unit. The test information feedback signal generation unit is electrically connected to the relevant equipment of the locomotive signal system through the wired communication unit. The wired communication unit is used to receive the locomotive signal sent by the relevant equipment of the locomotive signal system and send the locomotive signal to the test information feedback signal generation unit to generate a test information feedback signal. The test information feedback signal generation unit sends the test information feedback signal to the test information feedback signal receiving end of the distributed locomotive signal coding module through the wireless communication unit.

[0035] like Figure 8 In the system topology diagram shown, in one possible implementation, multiple portable locomotive signal coding modules are also included: The locomotive signal code generation control host module is also communicatively connected to the code generation control signal receiving end of the portable locomotive signal code generation module, and the code generation end of the portable locomotive signal code generation module is communicatively connected to the relevant equipment of the locomotive signal system.

[0036] like Figure 9 As shown, in one possible implementation, the portable locomotive signal coding module includes an independent power supply unit, a second main control circuit unit, a second communication circuit unit, a second track circuit signal generation unit, a second power amplification unit, a second true RMS current acquisition unit, and a simple distributed loop. The independent power supply unit is electrically connected to the second main control circuit unit. The second main control circuit unit is electrically connected to the second communication circuit unit, the second track circuit signal generation unit, the second power amplification unit, and the second true RMS current acquisition unit. The signal input terminal of the second communication circuit unit is electrically connected to the code control signal output terminal of the locomotive signal code generation control host module. The signal output terminal of the second track circuit signal generation unit is electrically connected to the simplified distribution loop through the second power amplification unit. The acquisition terminal of the second true RMS current acquisition unit is electrically connected to the simplified distribution loop. The second main control circuit unit is communicatively connected to the test information feedback terminal of the locomotive signal receiving information feedback terminal module through the second communication circuit unit. The second communication circuit unit is used to receive the test information feedback signal and send the test information feedback signal to the second main control circuit unit for data analysis to generate test result information. The second main control circuit unit sends the test result information to the test data receiving end of the locomotive signal coding control host module through the second communication circuit unit. The second track circuit signal generation unit is used to obtain an AC current signal generation instruction from the second main control circuit unit, and generate a pre-track circuit signal according to the AC current signal generation instruction; The second power amplifier unit is used to amplify the pre-track circuit signal and form a track circuit signal; The second true RMS current acquisition unit is used to acquire loop current from the simplified distributed loop; The simplified distribution loop is used to send the track circuit signals to the relevant equipment of the locomotive signaling system.

[0037] It should be noted that when the distributed locomotive signal coding module fails, the portable locomotive signal coding module can perform temporary testing by sending track circuit signals to ensure the normal operation of the system, thus adding a testing method for locomotive signals. Even when not receiving coding control signals, the portable locomotive signal coding module can still send track circuit signals automatically, based on its built-in coding program. The same applies to the distributed locomotive signal coding module.

[0038] like Figure 10 As shown, in a second aspect, the present invention provides a test method for a distributed remote centralized control locomotive signal coding system, used to test the distributed remote centralized control locomotive signal coding system as described in any one of the first aspects, comprising: S1. Obtain a preset code transmission distance threshold. The distributed locomotive signal code transmission module obtains a code transmission control signal from the locomotive signal code transmission control host module, and obtains real-time locomotive relative distance information through the distributed locomotive signal code transmission module. When the real-time locomotive relative distance information meets the code transmission distance threshold, the distributed locomotive signal code transmission module sends a track circuit signal to the relevant equipment of the locomotive signal system. The code transmission distance threshold is used to represent the maximum relative distance between the locomotive and the distributed locomotive signal code transmission module. S2. After receiving the corresponding track circuit signal, the relevant equipment of the locomotive signaling system generates the corresponding locomotive signal and sends the locomotive signal to the locomotive signal receiving information feedback terminal module through wired communication. The locomotive signal receiving information feedback terminal module parses the locomotive signal and sends a communication pairing request to the corresponding distributed locomotive signal coding module to complete the pairing. S3. After pairing is completed, the locomotive signal receiving information feedback terminal module generates a corresponding test information feedback signal and sends the test information feedback signal to the distributed locomotive signal transmitting module through the test information feedback terminal of the locomotive signal receiving information feedback terminal module; S4. Receive test information feedback signals through the distributed locomotive signal coding module, perform data analysis on the test information feedback signals to generate test result information, and send the test result information to the locomotive signal coding control host module through the test data sending end of the distributed locomotive signal coding module; S5. The locomotive signal code control host module receives test data and test result information, and visualizes the test data and test result information.

[0039] It should be noted that step S2 is actually a communication pairing process. Only after the communication pairing is completed can the distributed locomotive signaling module perform digital testing with the relevant equipment of the locomotive signaling system (i.e., step S3). The locomotive signal receiving information feedback terminal module generates the corresponding test information feedback signal. Therefore, in specific applications, in step S3, after the distributed locomotive signaling module and the locomotive signal receiving information feedback terminal module confirm the completion of pairing, the distributed locomotive signaling module will send a track circuit signal for digital testing (different from the track circuit signal in step S2, which is a signal used for...). The combined code defines the ID of the current distributed locomotive signal coding module (while the track circuit signal in step S3 is specifically for digital testing). After receiving this track circuit signal for digital testing, the relevant equipment of the locomotive signal system generates a corresponding digital test locomotive signal. The digital test locomotive signal is then sent to the locomotive signal receiving information feedback terminal module via wired communication. The locomotive signal receiving information feedback terminal module generates a corresponding test information feedback signal and then sends the test information feedback signal to the distributed locomotive signal coding module through the test information feedback terminal of the locomotive signal receiving information feedback terminal module.

[0040] In step S3, if the relevant equipment of the locomotive signaling system does not receive the track circuit signal sent by the distributed locomotive signal coding module, the locomotive signal receiving information feedback terminal will also be unable to provide feedback to the distributed locomotive signal coding module. The distributed locomotive signal coding module will continue to send the track circuit signal until it receives the test information feedback signal. If the distributed locomotive signal coding module does not receive the test information feedback signal sent by the locomotive signal receiving information feedback terminal within the preset test time, a test failure result information will be generated and sent to the locomotive signal coding control host module.

[0041] When the distributed locomotive signal transmitting module finishes transmitting the track circuit signals specified for the test, it generates test completion information. This information includes a one-to-one correspondence between the track circuit signals transmitted by the distributed locomotive signal transmitting module and the test information feedback signals sent back by the locomotive signal receiving information feedback terminal module. If the track circuit signals transmitted by the distributed locomotive signal transmitting module and the test information feedback signals sent back by the locomotive signal receiving information feedback terminal module correspond one-to-one, a test result of passing the test is generated. If there is an incorrect correspondence, a test result of failing the test is generated.

[0042] Specifically, in step S2, before the locomotive signal receiving information feedback terminal module and the distributed locomotive signal coding module perform communication pairing, the track circuit signal with additional definitions sent by the distributed locomotive signal coding module can be composed of three different types of track circuit signals, used to form a combination code representing the ID of the distributed locomotive signal coding module: The first is the area serial number identification code, which adopts the UM71 standard with a carrier frequency of 2600Hz and low frequencies selected from 26.8Hz, 24.6Hz, and 29.0Hz, corresponding to the three areas 1-3 of the test site respectively; The second is the track number identification code, which uses a frequency-shifting system with a carrier frequency of 850Hz. The low frequency is selected from 13.5Hz, 12.5Hz, 9.0Hz, 15.0Hz, 16.5Hz, 17.5Hz, 20.0Hz, 23.5Hz, 24.5Hz, and 18.5Hz, corresponding to track numbers 1-10 respectively. The third is the serial number identification code of the distributed locomotive signal coding module in this track, which adopts the ZPW2000 standard carrier frequency 2600-1, with the low frequency selected from 11.4Hz, 12.5Hz, 23.5Hz, 15.8Hz, and 19.1Hz, corresponding to serial numbers 1-5 respectively; with the serial number as the corresponding value, the values ​​corresponding to the three identification codes are connected to form the ID number of the distributed locomotive signal coding module; The combined identification of the locomotive signal light position and speed level corresponding to each of the selected low-frequency codes is unique.

[0043] It should be understood that the allocation of carrier frequency and low frequency in the above-mentioned ID identification combination code is only for illustrating the method of step S2 in this embodiment. Other allocation methods for carrier frequency and low frequency combination can be used to form the ID identification combination code. ID identification codes composed of different carrier frequency and low frequency combinations are all within the protection scope of this invention.

[0044] In this embodiment, the distributed locomotive signal coding module can be set up near the track in the locomotive signal test area, and multiple distributed locomotive signal coding modules can be set up in sections on the same test track. The distributed loop is directly led out from the distributed locomotive signal coding module and does not need to be led out from the locomotive signal coding control host module. Therefore, the loop length is greatly shortened, avoiding interference caused by excessively long wiring.

[0045] The current detection adopts the true RMS method (implemented through the first true RMS current acquisition unit and the second true RMS current acquisition unit), which is suitable for the true value of the current magnitude in the track circuit frequency band. The distributed locomotive signal coding module and / or portable locomotive signal coding module can independently send various types of track circuit signals (e.g., UM71, ZPW2000, frequency shift or AC counting, etc.) according to the default coding method. They can also receive instructions sent by the locomotive signal coding control host module (the coding method is determined by the coding control signal issued by the locomotive signal coding control host module) and code according to the instructions. The current magnitude of the coding can be adjusted, the up and down track circuit signals can be selected for transmission, the response time of the track circuit signals can be controlled, and the cyclic transmission or single transmission can be selected for control through the instructions of the locomotive signal coding control host. Cyclic transmission is divided into standard cycle and custom cycle. Cyclic transmission can be carried out according to the coding order of the standard cycle or according to the coding order of the custom cycle.

[0046] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A distributed, remotely centralized control locomotive signal coding system, characterized in that, include: Locomotive signal coding control host module, distributed locomotive signal coding module, and locomotive signal receiving information feedback terminal module; The power supply output terminal of the locomotive signal code generation control host module is electrically connected to the power supply input terminal of the distributed locomotive signal code generation module, the code generation control signal output terminal of the locomotive signal code generation control host module is communicatively connected to the code generation control signal receiving terminal of the distributed locomotive signal code generation module, and the code generation terminal of the distributed locomotive signal code generation module is communicatively connected to related equipment of the locomotive signal system. The test information feedback terminal of the locomotive signal receiving information feedback terminal module is communicatively connected to the test information feedback signal receiving terminal of the distributed locomotive signal coding module, and the test data sending terminal of the distributed locomotive signal coding module is communicatively connected to the test data receiving terminal of the locomotive signal coding control host module. The locomotive signal coding control host module is used to generate coding control signals and power the distributed locomotive signal coding module. It is also used to receive test data and test result information in real time to visualize the test data and test result information. The distributed locomotive signal coding module is used to send codes to the relevant equipment of the locomotive signal system, and is also used to receive test information feedback signals from the locomotive signal receiving information feedback terminal module for data analysis and to generate test result information. The distributed locomotive signal coding module includes multiple modules, and each distributed locomotive signal coding module is respectively set at each preset test position on the locomotive track. The locomotive signal receiving information feedback terminal module is used to receive locomotive signals fed back by relevant equipment of the locomotive signal system in order to generate test information feedback signals.

2. The distributed remote centralized control locomotive signal coding system according to claim 1, characterized in that, The locomotive signal code generation control host module includes a display unit, a communication main control unit, a first power line carrier communication unit, and a first isolation transformer unit; The communication master control unit is electrically connected to the first power line carrier communication unit, and the first power line carrier communication unit is electrically connected to the code transmission control signal receiving end of the distributed locomotive signal code transmission module through the first isolation transformer unit. The communication master control unit is used to generate a code transmission control signal and send the code transmission control signal to the code transmission control signal receiving end of the distributed locomotive signal transmission module through the first power line carrier communication unit and the first isolation transformer unit. It is also used to obtain test result information from the test data sending end of the distributed locomotive signal transmission module. The code transmission control signal includes code transmission parameter information.

3. The distributed remote centralized control locomotive signal coding system according to claim 2, characterized in that, The locomotive signal coding control host module also includes a lightning protection circuit unit and a test data printing unit; The lightning protection circuit unit is located at the output terminal of the code transmission control signal of the locomotive signal code transmission control host module and is electrically connected to the first isolation transformer unit, and the test data printing unit is electrically connected to the communication main control unit. The lightning protection circuit unit is used to provide overcurrent protection for the locomotive signal coding control host module; The test data printing unit is used to receive the printing start signal sent by the communication master control unit and print the test result information.

4. The distributed remote centralized control locomotive signal coding system according to claim 3, characterized in that, The lightning protection circuit unit includes a semiconductor discharge tube, a three-terminal ceramic gas discharge tube, and an overcurrent protection circuit; the test data printing unit includes an embedded thermal printer. The communication master control unit is electrically connected to the input terminal of the overcurrent protection circuit through the first isolation transformer unit. The output terminal of the overcurrent protection circuit is electrically connected to the input terminal of the semiconductor discharge tube. The output terminal of the semiconductor discharge tube is electrically connected to the input terminal of the three-terminal ceramic gas discharge tube. The output terminal of the three-terminal ceramic gas discharge tube is electrically connected to the power line carrier output terminal of the first power line carrier communication unit. The print start signal output terminal of the communication master control unit is electrically connected to the print start signal input terminal of the embedded thermal printer.

5. The distributed remote centralized control locomotive signal coding system according to claim 1, characterized in that, The distributed locomotive signal coding module includes a first main control circuit unit, a first communication circuit unit, a first track circuit signal generation unit, a first power amplification unit, a first true RMS current acquisition unit, a second power line carrier communication unit, a second isolation transformer unit, a locomotive sensing unit, and a distributed loop. The first main control circuit unit is electrically connected to the first communication circuit unit, the second power line carrier communication unit, the first track circuit signal generation unit, the first power amplification unit, the first true RMS current acquisition unit, and the locomotive sensing unit. The power line carrier input terminal of the second power line carrier communication unit is electrically connected to the code transmission control signal output terminal of the locomotive signal code transmission control host module through the second isolation transformer unit. The signal output terminal of the first track circuit signal generation unit is electrically connected to the distributed loop through the first power amplification unit and the first true RMS current acquisition unit. The locomotive sensing signal output terminal of the locomotive sensing unit is electrically connected to the first main control circuit unit. The first main control circuit unit is communicatively connected to the test information feedback terminal of the locomotive signal receiving information feedback terminal module through the first communication circuit unit. The first communication circuit unit is used to receive the test information feedback signal and send the test information feedback signal to the first main control circuit unit for data analysis to generate test result information. The first main control circuit unit sends the test result information to the test data receiving end of the locomotive signal code generation control host module through the second power line carrier communication unit. The first track circuit signal generation unit is used to obtain an AC current signal generation instruction from the first main control circuit unit, and generate a pre-track circuit signal according to the AC current signal generation instruction; The first power amplifier unit is used to amplify the pre-track circuit signal and form a track circuit signal; The first true RMS current acquisition unit is used to acquire loop current from the distributed loop; The distributed loop is used to send the track circuit signals to the relevant equipment of the locomotive signaling system; The locomotive sensing unit is used to acquire real-time locomotive relative distance information and send the real-time locomotive relative distance information to the first main control circuit unit.

6. The distributed remote centralized control locomotive signal coding system according to claim 5, characterized in that, The locomotive sensing unit includes a Hall sensor, an ultrasonic sensor, and a magnetoelectric sensor; The Hall sensor, the ultrasonic sensor, and the magnetoelectric sensor are all independently configured and electrically connected to the first main control circuit unit.

7. The distributed remote centralized control locomotive signal coding system according to claim 1, characterized in that, The locomotive signal receiving information feedback terminal module includes a test information feedback signal generation unit, a wireless communication unit, and a wired communication unit; The test information feedback signal generation unit is electrically connected to the relevant equipment of the locomotive signal system through the wired communication unit. The wired communication unit is used to receive the locomotive signal sent by the relevant equipment of the locomotive signal system and send the locomotive signal to the test information feedback signal generation unit to generate a test information feedback signal. The test information feedback signal generation unit sends the test information feedback signal to the test information feedback signal receiving end of the distributed locomotive signal coding module through the wireless communication unit.

8. The distributed remote centralized control locomotive signal coding system according to claim 1, characterized in that, It also includes a portable locomotive signal transponder module: The locomotive signal code generation control host module is also communicatively connected to the code generation control signal receiving end of the portable locomotive signal code generation module, and the code generation end of the portable locomotive signal code generation module is communicatively connected to the relevant equipment of the locomotive signal system.

9. The distributed remote centralized control locomotive signal coding system according to claim 8, characterized in that, The portable locomotive signal coding module includes an independent power supply unit, a second main control circuit unit, a second communication circuit unit, a second track circuit signal generation unit, a second power amplification unit, a second true RMS current acquisition unit, and a simple distributed loop. The independent power supply unit is electrically connected to the second main control circuit unit. The second main control circuit unit is electrically connected to the second communication circuit unit, the second track circuit signal generation unit, the second power amplification unit, and the second true RMS current acquisition unit. The signal input terminal of the second communication circuit unit is electrically connected to the code control signal output terminal of the locomotive signal code generation control host module. The signal output terminal of the second track circuit signal generation unit is electrically connected to the simplified distribution loop through the second power amplification unit. The acquisition terminal of the second true RMS current acquisition unit is electrically connected to the simplified distribution loop. The second main control circuit unit is communicatively connected to the test information feedback terminal of the locomotive signal receiving information feedback terminal module through the second communication circuit unit. The second communication circuit unit is used to receive the test information feedback signal and send the test information feedback signal to the second main control circuit unit for data analysis to generate test result information. The second main control circuit unit sends the test result information to the test data receiving end of the locomotive signal coding control host module through the second communication circuit unit. The second track circuit signal generation unit is used to obtain an AC current signal generation instruction from the second main control circuit unit, and generate a pre-track circuit signal according to the AC current signal generation instruction; The second power amplifier unit is used to amplify the pre-track circuit signal and form a track circuit signal; The second true RMS current acquisition unit is used to acquire loop current from the simplified distributed loop; The simplified distribution loop is used to send the track circuit signals to the relevant equipment of the locomotive signaling system.

10. A test method for a distributed remote centralized control locomotive signal coding system, used to test the distributed remote centralized control locomotive signal coding system as described in any one of claims 1-9, characterized in that, include: The distributed locomotive signal coding module obtains a coding control signal from the locomotive signal coding control host module, and obtains real-time locomotive relative distance information through the distributed locomotive signal coding module. When the real-time locomotive relative distance information meets the coding distance threshold, the distributed locomotive signal coding module sends track circuit signals to the relevant equipment of the locomotive signal system. The coding distance threshold is used to represent the maximum relative distance between the locomotive and the distributed locomotive signal coding module. After receiving the corresponding track circuit signals, the relevant equipment of the locomotive signaling system generates the corresponding locomotive signals and sends the locomotive signals to the locomotive signal receiving information feedback terminal module via wired communication. The locomotive signal receiving information feedback terminal module parses the locomotive signals and sends a communication pairing request to the corresponding distributed locomotive signal coding module to complete the pairing. Once pairing is complete, the locomotive signal receiving information feedback terminal module generates a corresponding test information feedback signal and sends the test information feedback signal to the distributed locomotive signal transmitting module through the test information feedback terminal of the locomotive signal receiving information feedback terminal module. The distributed locomotive signal coding module receives test information feedback signals and performs data analysis on the test information feedback signals to generate test result information. The test result information is then sent to the locomotive signal coding control host module through the test data sending end of the distributed locomotive signal coding module. The locomotive signal code control host module receives test data and test result information, and then visualizes and displays the test data and test result information.

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