BTM equipment in-band anti-interference capability test and evaluation system, method, equipment and medium

Abstract

The invention discloses a BTM equipment in-band anti-interference capability test and evaluation system, method, equipment and medium. The system comprises a control and data processing module, an interference signal generation module, a test module and an interference signal monitoring module. The interference signal generation module responds to the control instruction to generate in-band interference signals with different interference intensities, and applies the interference signals to BTM equipment through a wireless radiation or cable conduction coupling path; the test module collects equipment performance data; the monitoring module monitors interference signal parameters in real time; and the control and data processing module performs correlation analysis on the performance data and the interference signal parameters, generates a performance degradation curve, calculates a quantitative index of in-band anti-interference capability, and completes evaluation by comparing the quantitative index with a standard threshold value or historical data. Compared with the prior art, the method has the advantages that automatic and accurate testing and evaluation of the in-band anti-interference capability of the BTM equipment are realized through dual-path coupling interference and data association analysis.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of rail transit signal technology, and in particular to a BTM device in-band anti-interference capability test evaluation system, method, device and medium. BACKGROUND

[0002] In a rail transit system, a BTM (Balise Transmission Module) device uses a BTM antenna to emit continuous electromagnetic wave signals to activate a ground balise, and controls the ground balise to upload signal code information in an FSK coded manner. In actual application scenarios, when the BTM device encounters external electromagnetic noise, especially strong electromagnetic noise in the surrounding frequency band, the BTM device often has abnormal self-check signals or even loses balise information. Such noise interference overlaps with the wireless receiving frequency of the BTM device, causing a serious decrease in the signal-to-noise ratio of the FSK receiving link, ultimately leading to an increase in the bit error rate, even FSK decoding failure, directly affecting the normal operation of the BTM device, and posing a potential risk to the safety and stability of train operation.

[0003] After searching, Chinese Patent Publication No. CN116722938A discloses a BTM anti-interference performance automatic test system and method. The system controls a signal generation module and a message encoding module to generate simulated interference signals and simulated balise signals, and superimposes the two signals to form a combined signal which is sent to a BTM device for testing, thereby realizing automatic closed-loop testing and anti-interference performance evaluation based on a test case library. However, the system mainly relies on a signal generator and a combiner to simulate and superimpose signals in a fixed environment, lacks simulation of the coupling path of spatial radiation interference and cable conduction interference in an actual installation environment, and does not involve generating quantitative improvement suggestions based on data driving. The system has limitations in terms of the authenticity of the test scene and the completeness of the evaluation dimensions.

[0004] Therefore, how to quantitatively and reproducibly automatically test and evaluate the in-band anti-interference capability of a BTM device under actual installation conditions is a technical problem to be solved. SUMMARY

[0005] The present application relates to the field of rail transit signal technology, and in particular to a BTM device in-band anti-interference capability test evaluation system, method, device and medium.

[0006] The object of the present application can be achieved by the following technical solutions: According to a first aspect of the present application, a BTM device in-band anti-interference capability test evaluation system is provided, comprising: a control and data processing module, an interference signal generation module, a test module, and an interference signal monitoring module. The interference signal generation module generates in-band interference signals with different interference strengths in response to control instructions from the control and data processing module, and applies the interference signals to the BTM device through wireless radiation coupling paths and cable conduction coupling paths synchronously or alternatively; The test module is configured to collect performance data of the BTM device under the in-band interference signals. The interference signal monitoring module is configured to monitor characteristic parameters of the in-band interference signals in real time. The control and data processing module is configured to receive performance data from the test module and characteristic parameters of the in-band interference signals from the interference signal monitoring module. By correlating the performance data under different interference strengths with the corresponding characteristic parameters of the in-band interference signals, a performance degradation curve is generated. Based on the performance degradation curve, a quantitative indicator of the in-band interference resistance capability of the BTM device is calculated, and the quantitative indicator is compared with a preset standard threshold or historical data to evaluate whether the interference resistance capability of the BTM device meets the standard or is improved.

[0007] As a preferred technical solution, the interference signal generation module includes a vector signal generator configured to generate a series of in-band interference signals with stepwise increasing or decreasing strengths under the control of the control and data processing module to perform interference strength sweep tests.

[0008] As a preferred technical solution, the wireless radiation coupling path includes a power amplifier and a transmitting antenna configured to radiate interference signals in the form of electromagnetic waves to space to simulate wide-area spatial interference and simultaneously test multiple BTM devices; and the cable conduction coupling path includes an injection clamp or a coupled decoupling network configured to directly inject interference signals into a cable interface of the BTM device to simulate conducted interference. By adjusting the cable length, wiring method in the cable conduction coupling path, and setting simulation obstacles in the test environment, the actual installation environment of the BTM device is simulated.

[0009] As a preferred technical solution, the interference signal monitoring module includes a spectrum analyzer and a power meter configured to monitor the spectral purity, frequency, and strength of the in-band interference signals.

[0010] As a preferred technical solution, the performance data collected by the test module includes bit error rate and packet loss rate; the performance degradation curve is a bit error rate / packet loss rate-interference intensity curve; the quantitative indicators include maximum tolerable interference intensity and sensitivity degradation value, wherein the maximum tolerable interference intensity is the interference intensity corresponding to when the bit error rate or packet loss rate reaches a preset threshold, and the sensitivity degradation value is the BTM operating signal strength required to be increased to maintain the target bit error rate or packet loss rate under a fixed interference intensity.

[0011] As a preferred technical solution, the control and data processing module calculates the change rate of the performance data in real time during the interference intensity scanning test process, and automatically reduces the change step value of the interference intensity in the subsequent test when the change rate exceeds a preset mutation threshold.

[0012] As a preferred technical solution, the control and data processing module further performs frequency domain analysis on the BTM device received signal collected by the test module to evaluate the in-band interference resistance capability thereof, and the evaluation parameters of the frequency domain analysis include the frequency spectrum selectivity and in-band flatness of the receiving channel.

[0013] As a preferred technical solution, the system further includes a data storage and training module for storing BTM device operating data, interference signal monitoring data and evaluation results, regularly performing big data training based on the stored data, feeding back the training results to the control and data processing module to optimize the evaluation logic, and generating quantitative anti-interference improvement suggestions for the design and installation of the BTM device in combination with the big model.

[0014] According to a second aspect of the present application, a BTM device in-band interference resistance test evaluation method is provided, which comprises: controlling the interference signal generation module to generate in-band interference signals of different intensities, and synchronously or alternatively applying the in-band interference signals to the BTM device through a wireless radiation coupling path and a cable conduction coupling path; collecting performance data of the BTM device under interference through the test module; monitoring the characteristic parameters of the interference signal in real time through the interference signal monitoring module; correlating and analyzing the performance data under different interference intensities and the corresponding interference signal characteristic parameters to generate a performance degradation curve; calculating the quantitative indicators of the in-band interference resistance capability of the BTM device based on the performance degradation curve; comparing the calculated quantitative indicators with predetermined standard thresholds or historical data to evaluate whether the anti-interference capability of the BTM device meets the standard or is improved.

[0015] As a preferred technical solution, the method further includes: calculating the rate of change of the performance data in real time, and automatically reducing the step value of the change in interference intensity in subsequent tests when the rate of change exceeds a preset mutation threshold.

[0016] According to a third aspect of the present invention, an electronic device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the program to implement the method described thereon.

[0017] According to a fourth aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a processor, implements the method described thereon.

[0018] Compared with the prior art, the present invention has the following advantages: 1. This invention uses an integrated system architecture to simulate the spatial and conducted interference faced by BTM devices in actual installation environments through wireless radiation and cable conduction coupling. Based on the performance degradation curve generated by correlation analysis, it outputs quantitative evaluation indicators, thereby realizing automated testing and accurate evaluation of the device's in-band anti-interference capability in a quantifiable and reproducible manner.

[0019] 2. This invention combines interference intensity step scanning with real-time performance monitoring, which can automatically encrypt the test steps when a sharp deterioration in equipment performance is detected, accurately locate the performance critical point, and improve the accuracy and efficiency of testing.

[0020] 3. This invention performs frequency domain analysis of the signals received by BTM equipment, and diagnoses the interference performance of the equipment from dimensions such as spectral selectivity and in-band flatness, thereby achieving a multi-dimensional evaluation of the equipment's anti-interference performance.

[0021] 4. This invention combines big data training and analysis to generate quantitative improvement suggestions for equipment design or installation based on historical test data, providing decision support for the optimization and maintenance of BTM equipment. Attached Figure Description

[0022] Figure 1 This is a diagram of the core architecture of the system of the present invention; Figure 2 This is a block diagram illustrating the working principle of the system of the present invention; Figure 3 This is a flowchart of the method of the present invention; Figure 1 As indicated by the index number: 1. Control and data processing module; 2. Interference signal generation module; 3. Interference signal monitoring module; 4. Testing module; 5. Data storage and training module; Figure 2 As indicated by the index number: 6. Test BTM device; 11. AI data processing module; 12. Core management module; 13. Decision adjustment module; 14. Display unit; 15. Command control and data interaction module; 21. Signal generation module; 22. Power amplification module; 31. Interference signal feedback module; 32. Signal monitoring module; 41. Data acquisition and feedback module; 42. Cable interference coupler; 51. Big data model training module; 52. Data storage module; Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0024] Example 1: like Figure 1 and Figure 2 As shown, this invention provides a system for testing and evaluating the in-band anti-interference capability of BTM equipment. The system specifically includes: Control and Data Processing Module 1: This module is implemented using a high-performance industrial control computer. It runs dedicated test control software and integrates an AI data processing unit. This module is responsible for sending control commands to other modules, coordinating the entire test process, and serving as a data aggregation and processing center.

[0025] Interference Signal Generation Module 2: Under the control of Control and Data Processing Module 1, this module generates high-precision in-band interference signals. Its core device is a vector signal generator, which can generate a series of continuous wave or modulated interference signals with the same center frequency as the BTM device's operating frequency and whose intensity increases or decreases in a preset step manner, in order to achieve refined interference intensity scanning tests. Its RF output is divided into two channels: Wireless radiation coupling path: This path includes a power amplifier and a transmitting antenna. After the interference signal is amplified by the power amplifier, it is radiated into free space in the form of electromagnetic waves by the transmitting antenna, simulating wide-area electromagnetic noise from space. This method is particularly suitable for simultaneous batch testing of multiple BTM devices or testing the antenna anti-interference performance of the device. Cable Conducted Coupling Path: This path includes an injection clamp or coupling-decoupling network. Interference signals are directly coupled to the communication cables or power lines connecting the BTM equipment through the injection clamp, simulating conducted interference introduced through the cable. To more realistically simulate the field environment, the cable length and wiring method can be adjusted in this path, and metal obstacles can be placed in the test environment to study the impact of these factors on the interference coupling effect.

[0026] Test Module 4: This module is responsible for collecting the operating status data of the BTM device under interference, including: Performance data acquisition unit: a communication performance tester used to simultaneously collect the physical layer bit error rate and data link layer packet loss rate of the BTM device during communication with the host. Signal acquisition unit: A high-speed oscilloscope is used to directly acquire the baseband signal waveforms at the receiver end of the BTM device and before demodulation.

[0027] Interference Signal Monitoring Module 3: This module is used to monitor the quality of the interference signal actually applied to the BTM equipment in real time and independently during the test, ensuring the accuracy and repeatability of the test, including: Spectrum analyzer: Used to monitor the spectral purity, frequency accuracy, and stability of interference signals to ensure that they are pure in-band interference without spurious components; Power meter: Used in conjunction with a spectrum analyzer to accurately measure the strength of interference signals.

[0028] Data storage and training module 5: Implemented by a server, used to store test data and run AI training algorithms.

[0029] The system works as follows: The control and data processing module 1 instructs the interference signal generation module 2 to generate an initial interference signal, which is then applied to the BTM device through a selected coupling path. Simultaneously, the interference signal monitoring module 3 records the actual characteristics of the interference signal. The testing module 4 synchronously acquires the bit error rate, packet loss rate, and received signal waveform of the BTM device. Then, the control module increases the interference intensity by a step value, repeating the above process until all intensity scans are completed. Finally, the control and data processing module 1 summarizes all data, plots the bit error rate / packet loss rate-interference intensity curve, and calculates quantitative indicators such as the maximum tolerable interference intensity and sensitivity degradation value. By comparing with preset standards or historical data, it provides a pass / fail judgment and outputs detailed improvement suggestions generated by the data storage and training module 5. During the test, if a sudden increase in the rate of change of performance data is detected, the step value of the interference intensity will be automatically reduced to more accurately locate the performance inflection point.

[0030] This invention integrates a control and data processing module, an interference signal generation module, a testing module, and an interference signal monitoring module. It can simulate in-band interference in a real electromagnetic environment and couple the interference to the BTM device under test through both wireless radiation and cable conduction. Based on the correlation analysis of performance data and interference signals, it automatically generates performance degradation curves and quantitative indicators, thereby achieving accurate and automated evaluation and intelligent improvement guidance for the in-band anti-interference capability of BTM devices.

[0031] Example 2: This invention discloses a method for in-band interference immunity testing and evaluation of BTM equipment, the workflow of which is as follows: Figure 2 As shown, the method specifically includes: Step S1: Power on the control and data processing module 1, load the test program, and set the initial test parameters, including: the operating frequency of the BTM device, the initial strength of the interference signal, the termination strength, the step value, the test duration, etc. Step S2: The interference signal generation module 2 generates an in-band interference signal of a specific strength according to the control command. This signal can be applied to the BTM device under test synchronously or selectively through the wireless radiation coupling path and the cable conduction coupling path. Step S3: The interference signal monitoring module 3 monitors and records the characteristic parameters of the current interference signal in real time, such as spectral purity, frequency and true power intensity; the test module 4 synchronously collects the performance data of the BTM device under interference, including bit error rate, packet loss rate and time domain waveform data of the received signal, etc. Step S4: Control and data processing module 1 determines whether the current interference intensity has reached the preset termination intensity. If not, proceed to step S5; if it has, proceed to step S6. Step S5: Control and data processing module 1 increases or decreases the interference intensity according to the preset step. In this step, the module will calculate the rate of change of performance data in real time. If the rate of change exceeds the preset mutation threshold, the interference intensity step value of subsequent tests will be automatically reduced to achieve precise capture of performance inflection points. Then, the process returns to step S2.

[0032] Step S6: The control and data processing module 1 generates a performance degradation curve, correlates the bit error rate measured under different interference intensities, and plots the bit error rate / packet loss rate-interference intensity curve; based on the performance degradation curve, calculates key quantitative indicators such as maximum tolerable interference intensity and sensitivity degradation value; performs FFT transformation on the received signal of the BTM device, and analyzes the spectral selectivity and in-band flatness of its receiving channel. Step S7: Compare the calculated quantitative indicators with the predetermined standard thresholds or the historical test data of the device to evaluate whether the anti-interference capability of the BTM device meets the standard or can be improved in the iterative design. The data storage and training module performs big data analysis based on all test data, including current and historical data, and generates quantitative suggestions for improving anti-interference capabilities.

[0033] The method of this invention controls the generation of in-band interference of different intensities and applies it to the BTM device through a coupling path consistent with the actual application. It simultaneously collects device performance data and interference signal parameters, performs correlation analysis to generate a performance degradation curve, and calculates quantitative indicators. By comparing with preset standards or historical data, it realizes the automated evaluation of whether the device's anti-interference capability meets the standards.

[0034] Example 3: The electronic device of this invention includes a central processing unit (CPU), which can perform various appropriate actions and processes according to computer program instructions stored in read-only memory (ROM) or loaded from a storage unit into random access memory (RAM). The RAM may also store various programs and data required for device operation. The CPU, ROM, and RAM are interconnected via a bus. Input / output (I / O) interfaces are also connected to the bus.

[0035] Multiple components in the device are connected to the I / O interface, including: input units such as keyboards and mice; output units such as various types of displays and speakers; storage units such as disks and optical discs; and communication units such as network interface cards (NICs), modems, and wireless transceivers. The communication unit allows the device to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0036] The processing unit executes the various methods and processes described above, such as methods S1 to S7. For example, in some embodiments, methods S1 to S7 may be implemented as computer software programs tangibly contained in a machine-readable medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the device via ROM and / or a communication unit. When the computer program is loaded into RAM and executed by the CPU, one or more steps of methods S1 to S7 described above may be performed. Alternatively, in other embodiments, the CPU may be configured to execute methods S1 to S7 by any other suitable means (e.g., by means of firmware).

[0037] The functions described above in this document can be performed, at least in part, by one or more hardware logic components. For example, exemplary types of hardware logic components that can be used, without limitation, include: Field Programmable Gate Arrays (FPGAs), Application-Specific Integrated Circuits (ASICs), Application Standard Products (ASSPs), System-on-Chip (SoCs), Complex Programmable Logic Devices (CPLDs), and so on.

[0038] The program code used to implement the methods of the present invention can be written in any combination of one or more programming languages. This program code can be provided to a processor or controller of a general-purpose computer, special-purpose computer, or other programmable data processing device, such that when executed by the processor or controller, the program code causes the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code can be executed entirely on the machine, partially on the machine, as a standalone software package partially on the machine and partially on a remote machine, or entirely on a remote machine or server.

[0039] In the context of this invention, a machine-readable medium can be a tangible medium that may contain or store a program for use by or in conjunction with an instruction execution system, apparatus, or device. A machine-readable medium can be a machine-readable signal medium or a machine-readable storage medium. Machine-readable media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0040] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A system for testing and evaluating the in-band anti-interference capability of BTM equipment, characterized in that, include: Control and data processing module, interference signal generation module, testing module, and interference signal monitoring module; The interference signal generation module generates in-band interference signals of different interference intensities in response to the control command of the control and data processing module, and applies the interference signals to the BTM device synchronously or selectively through a wireless radiation coupling path and a cable conduction coupling path. The test module is used to collect performance data of the BTM device under the in-band interference signal; The interference signal monitoring module is used to monitor the characteristic parameters of the in-band interference signal in real time. The control and data processing module is used to receive performance data from the test module and characteristic parameters of in-band interference signals from the interference signal monitoring module. By correlating the performance data under different interference intensities with the characteristic parameters of the corresponding in-band interference signals, a performance degradation curve is generated. Based on the performance degradation curve, a quantitative index of the in-band anti-interference capability of the BTM device is calculated, and the quantitative index is compared with a preset standard threshold or historical data to evaluate whether the anti-interference capability of the BTM device meets the standard or has been improved.

2. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, The interference signal generation module includes a vector signal generator, which, under the control of the control and data processing module, generates a series of in-band interference signals with increasing or decreasing intensity in a step-by-step manner to perform interference intensity scanning tests.

3. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, The wireless radiation coupling path includes a power amplifier and a transmitting antenna, used to radiate interference signals into space in the form of electromagnetic waves to simulate wide-area spatial interference and to simultaneously test multiple BTM devices; the cable conduction coupling path includes an injection clamp or a coupling-decoupling network, used to directly inject interference signals into the cable interface of the BTM device to simulate conducted interference. The actual installation environment of the BTM device is simulated by adjusting the cable length and wiring method in the cable conduction coupling path and setting simulated obstacles in the test environment.

4. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, The interference signal monitoring module includes a spectrum analyzer and a power meter, used to monitor the spectral purity, frequency, and intensity of the in-band interference signal.

5. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, The performance data collected by the test module includes bit error rate and packet loss rate; the performance degradation curve is the bit error rate / packet loss rate-interference intensity curve; the quantitative indicators include maximum tolerable interference intensity and sensitivity degradation value, wherein the maximum tolerable interference intensity is the interference intensity corresponding to when the bit error rate or packet loss rate reaches a preset threshold, and the sensitivity degradation value is the increase in BTM working signal strength required to maintain the target bit error rate or packet loss rate under a fixed interference intensity.

6. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, During the interference intensity scanning test, the control and data processing module calculates the rate of change of the performance data in real time. When the rate of change exceeds the preset mutation threshold, it automatically reduces the step value of the interference intensity change in subsequent tests.

7. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, The control and data processing module also performs frequency domain analysis based on the BTM device received signal collected by the test module to evaluate its in-band anti-interference capability. The evaluation parameters of the frequency domain analysis include the spectral selectivity and in-band flatness of the receiving channel.

8. The BTM device in-band anti-interference capability testing and evaluation system according to claim 1, characterized in that, The system also includes a data storage and training module, which stores BTM device operating data, interference signal monitoring data and evaluation results, performs big data training on the stored data periodically, feeds the training results back to the control and data processing module to optimize the evaluation logic, and combines the big model to generate quantitative anti-interference improvement suggestions for the design and installation of the BTM device.

9. A method for testing and evaluating the in-band interference immunity of BTM equipment based on the system described in any one of claims 1-8, characterized in that, The method includes: The control interference signal generation module generates in-band interference signals of different intensities and applies them to the BTM device synchronously or selectively through a wireless radiation coupling path and a cable conduction coupling path. The performance data of the BTM device under interference was collected through the test module; The characteristic parameters of the interference signal are monitored in real time by the interference signal monitoring module; Correlation analysis is performed to correlate performance data with corresponding interference signal characteristic parameters under different interference intensities, generating performance degradation curves; Based on the performance degradation curve, a quantitative index of the in-band anti-interference capability of the BTM device is calculated. The calculated quantitative indicators are compared with predetermined standard thresholds or historical data to assess whether the anti-interference capability of the BTM equipment meets the standard or has been improved.

10. The in-band anti-interference test and evaluation method for BTM equipment according to claim 9, characterized in that, The method further includes: calculating the rate of change of the performance data in real time, and automatically reducing the step value of the change in interference intensity in subsequent tests when the rate of change exceeds a preset mutation threshold.

11. An electronic device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the program, it implements the method of claim 10.

12. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the program is executed by the processor, it implements the method described in claim 10.

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