Equipment working state detection system, truck and detection method

Abstract

The embodiment of the invention relates to the technical field of railway vehicle detection, and discloses an equipment working state detection system, a freight car and a detection method.The system comprises a playing module, a communication module and a judgment server, the playing module is arranged on a target freight car and used for judging whether the target freight car runs or not in the advancing process of the target freight car; when it is detected that the target truck runs to the equipment and the distance between the target truck and the equipment reaches a first distance, playing a detection sound file; the communication module is used for receiving sound data obtained after the equipment analyzes the detection sound file and sending the sound data and the detection sound file to the judgment server; the judgment server is used for comparing the sound data with the detection sound file so as to determine whether the working state of the equipment is normal or not. According to the method and the device, the playing module is arranged on the target truck, so that the detection process can be automatically triggered during normal running of the truck, limitation of shutdown time is avoided, the equipment can be detected at higher frequency, and hidden dangers existing in the equipment can be found in time.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of railway vehicle detection, and in particular to a detection system, a freight car and a detection method for the working status of equipment. Background Art

[0002] The Trackside Acoustic Detection System (TADS) is an important device used to monitor early failures of rolling bearings in railway transportation. It determines the health of bearings by collecting and analyzing acoustic signals.

[0003] However, TADS equipment is exposed to the outdoor environment for a long time, and its performance will be affected by many uncertain factors, such as sensor aging, signal attenuation, electronic component failure, etc. The existing TADS equipment inspection method usually relies on manual inspection after the truck is stopped, which not only increases labor costs, but also has the disadvantages of large workload and low maintenance efficiency. Summary of the invention

[0004] The purpose of the present invention is to at least provide a detection system, truck and detection method for the working status of the equipment, which can at least solve the technical problem that the existing TADS equipment detection method usually relies on manual inspection after the truck is stopped and the maintenance efficiency is low, and at least it can replace manual inspection and improve the maintenance efficiency.

[0005] To solve the above technical problems, at least one embodiment of the present application provides a device working status detection system, including: a playback module, a communication module and a judgment server,

[0006] The playing module is arranged on the target truck, and is used to play the detection sound file when it is detected that the target truck is moving towards the device and the distance between the target truck and the device reaches a first distance during the moving process with the target truck;

[0007] The communication module is used to receive the sound data after the device analyzes the detection sound file, and send the sound data and the detection sound file to the evaluation server;

[0008] The evaluation server is used to compare the sound data with the detection sound file to determine whether the working state of the device is normal.

[0009] At least one embodiment of the present application further provides a truck, comprising the above-mentioned detection system for the working status of the equipment.

[0010] At least one embodiment of the present application further provides a method for detecting a device working status, comprising:

[0011] In the process of traveling with the target truck, when it is detected that the target truck is traveling toward the device and the distance between the target truck and the device reaches a first distance, a detection sound file is played by a playback module arranged on the target truck;

[0012] Receiving sound data after the device analyzes the detection sound file;

[0013] The sound data is compared with the detection sound file, and whether the working state of the device is normal is determined according to the comparison result.

[0014] The embodiments of the present application provide a detection system, truck and method for detecting the working status of equipment. The system is installed on a target truck and can automatically trigger the detection process when the target truck approaches the equipment during normal driving of the truck. No human intervention is required, which reduces the steps in traditional detection methods that require manual on-site visits or the use of special tools to perform operations, shortening the detection cycle. Moreover, the detection is not limited by downtime, and the equipment can be inspected more frequently to promptly discover hidden dangers in the equipment.

[0015] In some optional embodiments, it also includes: a power supply unit, used to provide power for the playback module and the communication module.

[0016] In this embodiment, the separately provided power supply unit can ensure that the playback module and the communication module obtain stable and continuous power supply when needed, so that when the power supply needs to be repaired or replaced, the operation can be performed more conveniently without disassembling or making large-scale adjustments to the entire system.

[0017] In some optional embodiments, the power supply unit includes a shaft end generator, a battery pack and a distribution box.

[0018] The shaft-end generator is mounted on the wheel axle of the target truck;

[0019] The battery pack is used to store the electric energy generated by the shaft end generator;

[0020] The distribution box is used for energy scheduling on the power supply side and the power consumption side, and uploads the energy scheduling data to the power management center.

[0021] In this embodiment, the shaft-end generator is installed on the axle of the target truck, and can convert the mechanical energy generated during the driving of the truck into electrical energy. This method not only realizes the reuse of energy, but also reduces the dependence on the traditional power grid, helps to reduce carbon emissions, and reduces operating costs. The battery pack is used to store the electrical energy generated by the shaft-end generator to ensure that when the truck stops driving or the output of the shaft-end generator is insufficient, it can still provide a stable power supply for the detection system. The energy storage function of the battery pack improves the reliability and stability of the system. Through the intelligent energy scheduling of the distribution box, the waste and ineffective use of electrical energy can be avoided.

[0022] In some optional embodiments, the distribution box is used to supply power to the playback module when the target truck drives toward the device and the distance between the target truck and the device reaches a first distance, so that the playback module plays the detection sound file.

[0023] In this embodiment, the playback module is powered only when the target truck drives toward the device and the distance between the target truck and the device reaches a first distance, so that the electric energy generated by the shaft end generator can be reasonably utilized and useless loss can be reduced.

[0024] In some optional embodiments, the power distribution box is further used to stop supplying power to the playback module when it is detected that the target truck drives away from the device and the distance between the target truck and the device reaches a second distance.

[0025] In this embodiment, when the target truck leaves the device and the distance between the target truck and the device reaches the second distance, it means that the detection of the device has been completed, so there is no need to play the detection file. At this time, stopping the power supply to the playback module can further reduce the waste of power and improve the endurance of the detection system.

[0026] In some optional embodiments, the playback module includes a positioning unit, an industrial computer, an audio amplification unit and a sound player:

[0027] The positioning unit is used to detect the distance between the target truck and the device, and send the detection result of the distance to the industrial computer;

[0028] The industrial computer is used to control the audio amplification unit to amplify the detection sound file based on the detection result of the distance, and then play it through the sound player.

[0029] In this embodiment, the positioning unit can detect the distance between the target truck and the device in real time, ensuring that the play function is triggered when the truck approaches a specific distance (such as the first distance). This precise distance detection capability helps to avoid the sound being played too early or too late, thereby improving the accuracy and effectiveness of the detection. The industrial computer can receive the distance detection results sent by the positioning unit, and intelligently control the operation of the audio amplification unit and the sound player according to the preset logic or algorithm. This intelligent control enables the playback module to flexibly adjust the playback strategy according to different scenarios and needs, thereby improving the adaptability and flexibility of the system. The audio amplification unit can amplify the detection sound file to ensure that the sound has sufficient volume and clarity in a noisy environment or when it is transmitted over long distances, which helps to improve the accuracy and reliability of sound recognition.

[0030] In some optional embodiments, there are multiple sound players, and the multiple sound players are divided into two groups and are respectively arranged on two opposite sides of the exterior of the target truck.

[0031] In this embodiment, by arranging the sound players on opposite sides of the vehicle body, it is ensured that the sound can be propagated in multiple directions, thereby expanding the coverage of the sound, being able to more comprehensively cover the target area, and improving the accuracy and efficiency of detection. At the same time, since the sound is affected by many factors during the propagation process, such as wind direction, obstacles, etc., arranging the sound players in groups can reduce the unevenness of the sound propagation process, so that the sound can cover the target area more evenly.

[0032] In some optional embodiments, the detection sound file is a fixed frequency sound, and each group of the playback modules plays the detection sound files of different frequencies respectively.

[0033] In this embodiment, using fixed frequency sounds can simplify the sound recognition algorithm, so that the device can more easily identify these frequencies without complex signal processing or feature extraction. When a problem occurs in the system, by checking whether the frequency played by each playback module is correct, it is easier to diagnose the problem, which helps to quickly locate and solve the problem and improve the maintenance efficiency of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] One or more embodiments are exemplarily described by the pictures in the corresponding drawings, and these exemplary descriptions do not constitute limitations on the embodiments.

[0035] Figure 1 A detection system for the working status of a device provided by an embodiment of the present application;

[0036] Figure 2 is a schematic diagram of the internal structure of a power supply unit provided by an embodiment of the present application;

[0037] Figure 3 It is a flowchart of a method for detecting the working status of a device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0038] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the embodiments of the present application will be described in detail below in conjunction with the accompanying drawings. However, it will be appreciated by those skilled in the art that in the present application, many technical details are proposed in order to enable the reader to better understand the present application. However, even without these technical details and various changes and modifications based on the following embodiments, the technical scheme claimed in the present application can also be implemented. The division of the following embodiments is for the convenience of description, and the specific implementation of the present application should not be construed as any limitation, and the various embodiments can be combined and referenced with each other under the premise of no contradiction.

[0039] In order to solve the above-mentioned technical problem that the existing TADS equipment detection method usually relies on manual inspection after the truck stops running and the maintenance efficiency is low, the present invention proposes a detection system for the working status of the equipment. The implementation details of the detection system for the working status of the equipment of this embodiment are specifically described below. The following content is only the implementation details provided for the convenience of understanding and is not necessary for the implementation of this solution.

[0040] Embodiment 1:

[0041] like Figure 1 As shown, in order to realize real-time monitoring of the working status of the TADS device, this embodiment proposes a device working status detection system, including: a playback module 110, a communication module 120 and a judgment server 130,

[0042] The playing module 110 is arranged on the target truck, and is used to play the detection sound file when it is detected that the target truck is moving towards the device and the distance between the target truck and the device reaches a first distance during the moving process with the target truck;

[0043] The communication module 120 is used to receive the sound data after the device analyzes the detection sound file, and send the sound data and the detection sound file to the evaluation server;

[0044] The evaluation server 130 is used to compare the sound data with the detection sound file to determine whether the working status of the device is normal.

[0045] In this embodiment, the detection system consists of three modules: a playback module, a communication module, and an evaluation server. The playback module is set on a normally moving truck to play the detection sound file at a specific distance; the communication module is responsible for receiving the sound data after the TADS device analyzes the detection sound file, and sends it together with the original detection sound file to the evaluation server; the evaluation server determines whether the working status of the TADS device is normal by comparing the sound data with the detection sound file.

[0046] Specifically, the playback module can use high-quality audio playback chips and speakers to ensure the accurate playback of sound signals. At the same time, it is necessary to be equipped with distance sensors (such as radar, laser rangefinder, etc.) to monitor the distance between the truck and the TADS device in real time. In terms of software, the control program of the playback module can be developed based on embedded systems (such as Arduino, STM32, etc.). The program must include modules such as distance detection logic, sound file playback control, and error handling. When the distance sensor detects that the distance between the truck and the TADS device reaches the preset value, the program triggers the audio playback chip to play the preset detection sound file. The detection sound file must have a specific frequency, amplitude, and waveform so that the TADS device can accurately identify and analyze it.

[0047] The communication module is the data transmission unit of the system. Its main function is to receive the sound data after the TADS device analyzes the detection sound file, and send it together with the original detection sound file to the evaluation server. The communication module must have high reliability, low power consumption and long-distance transmission capabilities. In terms of hardware selection, the communication module can use a wireless communication module (such as LoRa, NB-IoT, etc.) that supports low-power wide area network (LPWAN) technology to ensure long-distance, low-power data transmission. At the same time, an audio acquisition module must be equipped to receive the sound data output by the TADS device. In terms of software development, develop the driver and data transmission protocol for the communication module. The driver must support the collection, encoding and transmission of audio data; the data transmission protocol must ensure the integrity, reliability and security of the data.

[0048] To ensure the stability and reliability of data transmission, the communication module needs to be configured in the network, including setting parameters such as communication frequency, communication rate, communication protocol, and establishing a network connection with the evaluation server.

[0049] The evaluation server is the core processing unit of the system. Its main function is to judge whether the working status of the TADS equipment is normal by comparing the received sound data with the original detection sound file. The evaluation server needs to have powerful data processing capabilities and intelligent analysis algorithms. The evaluation server can use high-performance server hardware and configure sufficient computing resources and storage space. At the same time, it needs to be equipped with professional audio processing equipment and software to support the analysis and processing of audio data. The application program of the evaluation server can be developed based on programming languages ​​such as Python and Java. The application program must include modules such as the audio analysis algorithm library, database management system, and user interface. The audio analysis algorithm library is used to extract features and perform pattern recognition on the received sound data; the database management system is used to store and manage historical data and analysis results; the user interface is used to display analysis results and provide user interaction functions.

[0050] In some optional embodiments, advanced audio analysis algorithms (such as Fourier transform, wavelet analysis, machine learning, etc.) are used to process and analyze the sound data. First, the received sound data is preprocessed, including steps such as denoising and filtering; then, the characteristic parameters of the sound data (such as frequency, amplitude, waveform, etc.) are extracted; finally, by comparing the characteristic parameters with the preset normal value range or the mode in the mode library, it is determined whether the working state of the TADS device is normal.

[0051] The following takes a certain railway section as an example to illustrate the specific application process of the detection system.

[0052] 1) System deployment

[0053] On a certain railway section, select several key locations (such as bridges, tunnels, curves, etc.) to install TADS equipment. At the same time, install playback modules and communication modules on freight cars. The evaluation server is deployed in the railway bureau's data center or cloud computing platform.

[0054] 2) System operation

[0055] The truck is moving normally: The truck is moving normally on the railway section. When the distance sensor detects that the truck is driving towards the TADS device and the distance reaches the preset first distance, the playback module automatically plays the preset detection sound file. The first distance can be set to 10 meters, 5 meters or 1 meter, or dynamically adjusted according to the driving speed of the truck and the time it takes to play the detection sound file, so as to more accurately control the playback timing of the detection sound file and ensure the smooth completion of the entire detection process.

[0056] Sound collection and analysis: After receiving the detection sound file, the TADS device collects and analyzes it to generate sound data. The communication module receives the sound data and sends it to the evaluation server together with the original detection sound file.

[0057] Data analysis and judgment: After receiving the sound data, the judging server processes and analyzes it. By comparing the characteristic parameters of the sound data with the original detection sound file, it is judged whether the working status of the TADS equipment is normal. If there is a large difference or abnormal characteristics, an alarm is issued and the possible fault type is prompted.

[0058] Result feedback and processing: The evaluation server displays the analysis results to railway staff through the user interface. The staff takes corresponding processing measures based on the analysis results, such as repairing and replacing equipment.

[0059] To sum up, the detection system for the working status of the equipment provided in this embodiment, by setting the playback module on the target truck, can automatically trigger the detection process when the target truck approaches the equipment during normal driving of the truck, without human intervention, thereby reducing the steps in traditional detection methods that require manual work to go to the site or use special tools to perform operations, and shortening the detection cycle; and the detection is not limited by the downtime, and the equipment can be inspected more frequently to promptly discover hidden dangers in the equipment.

[0060] In some embodiments, it also includes: a power supply unit, used to provide power to the playback module and the communication module.

[0061] In this embodiment, the separately provided power supply unit can ensure that the playback module and the communication module obtain stable and continuous power supply when needed, so that when maintenance or replacement of the power supply is needed, the operation can be carried out more conveniently without disassembling or large-scale adjustment of the entire system, thereby reducing the burden on the overall operation and maintenance of the truck.

[0062] In some optional embodiments, the power supply unit includes a shaft end generator, a battery pack and a distribution box.

[0063] The shaft-end generator is mounted on the wheel axle of the target truck;

[0064] The battery pack is used to store the electric energy generated by the shaft end generator;

[0065] The distribution box is used for energy scheduling on the power supply side and the power consumption side, and uploads the energy scheduling data to the power management center.

[0066] Specifically, "axle-end power generation" refers to the technology of converting the mechanical energy generated by a truck during driving into electrical energy. The generator device installed on the axle of the truck converts the energy of the axle rotation during driving into electrical energy for use by the internal equipment of the truck or stored for backup. The working principle is as follows:

[0067] 1. Mechanical energy conversion: When a truck is driving, the wheel axle rotates due to contact with the track, driving the generator installed on it.

[0068] 2. The generator contains a fixed coil and a rotating magnet (or vice versa). When the magnet moves relative to the coil, an electromotive force is generated in the coil, which in turn generates an electric current.

[0069] like Figure 1 The figure shows the internal structure of the power supply unit. The battery is the battery pack mentioned above. The battery pack is used to store the electric energy generated by the shaft-end generator. The power supply unit is equipped with an on-board AC / DC power supply, which outputs the three-phase AC output of the on-board shaft-end generator through the EMI filter circuit and the rectifier circuit, and outputs it to the post-stage boost chopper, and then through the DC / DC conversion, the rectifier filter outputs a stable DC voltage to power the battery. In order to ensure the performance and life of the battery, CAN communication is carried out with the BMS at the same time to adjust the output voltage and current in real time to meet the battery charging and discharging characteristics.

[0070] On the one hand, the distribution box completes the energy scheduling between the power supply side and the power consumption side; on the other hand, it communicates with the time-space synchronization platform through Ethernet, uploads all key data of the power supply system to the data control center, and provides data for the background health status management software.

[0071] In this embodiment, the shaft-end generator is installed on the axle of the target truck, and can convert the mechanical energy generated during the driving of the truck into electrical energy. This method not only realizes the reuse of energy, but also reduces the dependence on the traditional power grid, helps to reduce carbon emissions, and reduces operating costs. The battery pack is used to store the electrical energy generated by the shaft-end generator to ensure that when the truck stops driving or the output of the shaft-end generator is insufficient, it can still provide a stable power supply for the detection system. The energy storage function of the battery pack improves the reliability and stability of the system. Through the intelligent energy scheduling of the distribution box, the waste and ineffective use of electrical energy can be avoided.

[0072] In some optional embodiments, the distribution box is used to supply power to the playback module when the target truck drives toward the device and the distance between the target truck and the device reaches a first distance, so that the playback module plays the detection sound file.

[0073] Usually, the shaft end generator needs to start working when the speed reaches above 30km / h. As the speed increases, the power generation will also increase accordingly. However, considering the limited power generation of the shaft end generator, it is difficult to ensure that the detection system can operate online for a long time. Therefore, in this embodiment, by continuously receiving the GPS signal, the distribution box starts to supply power to the detection system only when the target truck approaches the detection point (the target truck drives towards the device and the distance between the target truck and the device reaches the first distance). After the equipment is powered on, the detection process is carried out to achieve the rational use of the electric energy generated by the shaft end generator and reduce useless losses.

[0074] In some optional embodiments, the power distribution box is further used to stop supplying power to the playback module when it is detected that the target truck drives away from the device and the distance between the target truck and the device reaches a second distance.

[0075] In this embodiment, when the target truck leaves the device and the distance between the target truck and the device reaches the second distance, it means that the detection of the device has been completed, so there is no need to play the detection file. At this time, the power supply to the playback module is stopped, and the power supply to the playback module is restarted when the next detection task arrives, thereby further reducing the waste of electric energy and improving the endurance of the detection system.

[0076] The second distance may be the same as or different from the first distance, depending on actual needs, and is not specifically limited here.

[0077] In some optional embodiments, the playback module includes a positioning unit, an industrial computer, an audio amplification unit and a sound player:

[0078] The positioning unit is used to detect the distance between the target truck and the device, and send the detection result of the distance to the industrial computer;

[0079] The industrial computer is used to control the audio amplification unit to amplify the detection sound file based on the detection result of the distance, and then play it through the sound player.

[0080] Specifically, the positioning unit can use distance measurement technology, such as radar ranging, laser ranging or GPS positioning combined with map data to achieve distance detection. The industrial computer is responsible for receiving the distance data sent by the positioning unit and judging when to trigger the sound playback according to the preset logic. The industrial computer can use a high-performance embedded system to improve data processing capabilities and a stable and reliable operating environment. The audio amplifier unit is the component in the playback module responsible for amplifying the sound signal. In order to ensure the clarity and stability of the sound signal during transmission, the audio amplifier unit uses a high-fidelity, low-distortion amplifier circuit. In order to ensure the clarity and accuracy of the sound playback, the sound player generally uses high-quality speakers or audio output devices.

[0081] The selection and installation location of the sound player has an important impact on the propagation effect and coverage of the sound signal. Therefore, in actual application, it is necessary to select and adjust according to the actual situation, such as installing it at the bottom or top of the truck.

[0082] In this embodiment, the positioning unit can detect the distance between the target truck and the device in real time, ensuring that the play function is triggered when the truck approaches a specific distance (such as the first distance). This precise distance detection capability helps to avoid the sound being played too early or too late, thereby improving the accuracy and effectiveness of the detection. The industrial computer can receive the distance detection results sent by the positioning unit, and intelligently control the operation of the audio amplification unit and the sound player according to the preset logic or algorithm. This intelligent control enables the playback module to flexibly adjust the playback strategy according to different scenarios and needs, thereby improving the adaptability and flexibility of the system. The audio amplification unit can amplify the detection sound file to ensure that the sound has sufficient volume and clarity in a noisy environment or when it is transmitted over long distances, which helps to improve the accuracy and reliability of sound recognition.

[0083] In some optional embodiments, there are multiple sound players, and the multiple sound players are divided into two groups and are respectively arranged on two opposite sides of the exterior of the target truck.

[0084] In this embodiment, by arranging the sound players on opposite sides of the vehicle body, it is ensured that the sound can be propagated in multiple directions, thereby expanding the coverage of the sound, being able to more comprehensively cover the target area, and improving the accuracy and efficiency of detection. At the same time, since the sound is affected by many factors during the propagation process, such as wind direction, obstacles, etc., arranging the sound players in groups can reduce the unevenness of the sound propagation process, so that the sound can cover the target area more evenly.

[0085] For example, two sound players are installed on the left and right sides of the vehicle body, the two sound players on the left are group A players, and the two sound players on the right are group B players. When playing, the two groups of players play at the same time to expand the coverage of the sound and improve the uniformity of sound propagation.

[0086] In some optional embodiments, the detection sound file is a fixed frequency sound, and each group of the playback modules plays the detection sound files of different frequencies respectively.

[0087] In this embodiment, using fixed frequency sounds can simplify the algorithm of sound recognition, so that the device can more easily identify these frequencies without complex signal processing or feature extraction. When a problem occurs in the system, by checking whether the frequency played by each playback module is correct, it is easier to diagnose the problem, which helps to quickly locate and solve the problem and improve the maintenance efficiency of the system.

[0088] Embodiment 2:

[0089] Based on the above embodiments, this embodiment provides an application example. It provides a method for detecting the operating status of equipment to solve the technical problems of high cost and low efficiency of manual maintenance in the prior art. The details are as follows:

[0090] 1. Modify the truck and build a detection system

[0091] The existing trucks are composed of two vehicles, which are not separated. One vehicle in each vehicle group is a power supply vehicle, and the other vehicle is equipped with a detection system. The detection system includes a playback module (GPS positioning unit, industrial computer, audio amplifier unit and sound player), a communication module and a judgment server.

[0092] The bottom of the truck is equipped with an equipment box for installing the GPS positioning unit, industrial computer, audio amplifier unit and communication module. Two sound outputs are distributed on the two outer sides of the truck body, for a total of four sound outputs. Among them, the GPS positioning unit is used to determine the distance between the truck and the trackside TADS device. The industrial computer is responsible for processing the location information from the GPS positioning unit and controlling the playback of sound information. The audio amplifier unit is used to amplify the played sound. The sound player is used to play the sound from the audio amplifier unit.

[0093] The communication module is used to upload the played sound information and the sound information detected by the trackside TADS device to the evaluation server. The evaluation server is used to receive the two kinds of sound information from the data communication unit and judge the operating status of the TADS device.

[0094] Specific methods for detecting the operating status of equipment are as follows: Figure 3 As shown, the industrial computer receives and processes GPS positioning information. When the truck passes through the working area of ​​the TADS equipment, it triggers the TADS system to enter the vehicle receiving state and play a special calibration sound sample (i.e., a detection sound file, which is a fixed frequency sound with a fixed frequency of 4K, 10K, 16K, etc.). The two sound players on each side form a group, and the two groups of sound players play sound files of different frequencies respectively. The TADS system collects the calibration sound and analyzes the collected results. The analysis results are uploaded to the evaluation server for comparison with the played sample information to determine whether the working status of TADS is normal.

[0095] The power supply vehicle is provided with a power supply unit, such as Figure 2The figure shows the internal structure of the power supply unit. The power supply unit includes a shaft-end generator, a battery pack and a distribution box, which are used to provide a source of power for the detection system. The shaft-end generator converts the energy of the wheel axle rotation when the truck is driving into electrical energy through a generator device installed on the axle of the truck, which is used by the internal equipment of the truck or stored for backup. The battery pack is used to store the electrical energy generated by the shaft-end generator. The battery box is equipped with an on-board AC / DC power supply, which outputs the three-phase AC output of the on-board shaft-end generator to the post-stage boost chopper through the EMI filter circuit and the rectifier circuit, and then through the DC / DC conversion, the rectifier filter outputs a stable DC voltage to power the battery. In order to ensure the performance and life of the battery, CAN communication is carried out with the BMS at the same time to adjust the output voltage and current in real time to meet the battery charging and discharging characteristics.

[0096] On the one hand, the distribution box completes the energy scheduling between the power supply side and the power consumption side; on the other hand, it communicates with the time-space synchronization platform through Ethernet, uploads all key data of the power supply system to the data control center, and provides data for the background health status management software.

[0097] In actual testing, the shaft-end generator needs to start working only when the speed reaches above 30km / h. As the speed increases, the power generation will also increase accordingly. However, the power generation of the shaft-end generator is limited, and it is difficult to ensure that the detection system can run online for a long time. Therefore, in this embodiment, by continuously receiving GPS signals, only when the truck approaches the detection point (the truck drives towards the TADS device until the distance with the TADS device reaches the first distance), the distribution box starts to supply power to the detection system, and the device performs the detection process after power-on; when the truck leaves the detection point, the distribution box stops supplying power, the device shuts down, and waits for the next detection task.

[0098] In this embodiment, ordinary freight trains are modified by installing power systems, multifunctional sensors and distributed sensor networks on ordinary freight trains, and incorporating them into normal train formations to monitor the status of train axle boxes in real time. This modification eliminates the need for special inspection trains and enables the inspection task to be completed using freight trains in daily operation, thus saving costs.

[0099] In addition, the collected data is transmitted to the central control center in real time through wireless communication technology (such as 4G / 5G) for centralized processing and analysis. Develop data processing and analysis software, integrate big data processing technology and machine learning algorithms, and realize intelligent analysis of collected data. Establish an emergency response mechanism, and immediately activate the emergency plan once the monitoring system finds an abnormal situation. Realize real-time transmission and processing of data to improve the timeliness and accuracy of detection.

[0100] In summary, the device working status detection method of this embodiment brings at least the following beneficial effects:

[0101] (1) Improve detection efficiency

[0102] The traditional method of relying on manual inspection of detection station equipment along the railway has many limitations, especially in occupying the "window time". "Window time" refers to the time period during railway maintenance operations when there are no trucks passing in order to ensure driving safety. During this time period, railway maintenance personnel can inspect and maintain tracks, signal equipment and other related facilities. However, the window time is limited, and it is necessary to coordinate various resources, including truck dispatching, maintenance personnel, etc. Therefore, the time available for maintenance each time is relatively tight. The detection method of this embodiment is not limited by the window time, and the detection can be completed during the normal operation of the truck without the need for additional manpower investment, which greatly improves the timeliness and accuracy of fault warning.

[0103] (2) Reduce reliance on conventional speed comprehensive inspection trains

[0104] At present, the inspection of railway 5T equipment (including THDS, TFDS, TPDS, TADS, TCDS, etc.) is mainly completed by ordinary speed comprehensive inspection trains. This method has the following problems:

[0105] ① High cost: Comprehensive inspection trains are not only expensive to build, but each inspection also requires a lot of time and human resources.

[0106] ② Poor flexibility: Since a special inspection truck is required, the choice of inspection time and location is not flexible enough.

[0107] The equipment detection system provided in this embodiment realizes online monitoring of railway TADS equipment by modifying ordinary freight trucks, installing power systems, multi-function sensors and data communication networks on ordinary freight trucks, and incorporating them into normal formations, thereby reducing dependence on ordinary speed comprehensive detection trains.

[0108] Those skilled in the art will appreciate that the above embodiments are specific embodiments for implementing the present application, and in actual applications, various changes may be made thereto in form and detail without departing from the spirit and scope of the present application.

Claims

1. A detection system for equipment working status, characterized in that: include: Playback module, communication module and judging server, The playing module is arranged on the target truck, and is used to play the detection sound file when it is detected that the target truck is moving towards the device and the distance between the target truck and the device reaches a first distance during the moving process with the target truck; The communication module is used to receive the sound data after the device analyzes the detection sound file, and send the sound data and the detection sound file to the evaluation server; The evaluation server is used to compare the sound data with the detection sound file to determine whether the working state of the device is normal.

2. The device working status detection system according to claim 1, characterized in that: Also includes: A power supply unit is used to provide power to the playback module and the communication module.

3. The device working status detection system according to claim 2, characterized in that: The power supply unit includes a shaft end generator, a battery pack and a distribution box. The shaft-end generator is mounted on the wheel axle of the target truck; The battery pack is used to store the electric energy generated by the shaft end generator; The distribution box is used for energy scheduling on the power supply side and the power consumption side, and uploads the energy scheduling data to the power management center.

4. The device working status detection system according to claim 3, characterized in that: The power distribution box is used to supply power to the playing module when the target truck drives toward the device and the distance between the target truck and the device reaches a first distance, so that the playing module plays the detection sound file.

5. The device working status detection system according to claim 3, characterized in that: The power distribution box is also used to stop supplying power to the playback module when it is detected that the target truck has left the device and the distance between the target truck and the device reaches a second distance.

6. The device working status detection system according to any one of claims 1 to 5, characterized in that: The playback module includes a positioning unit, an industrial computer, an audio amplifier unit and a sound player: The positioning unit is used to detect the distance between the target truck and the device, and send the detection result of the distance to the industrial computer; The industrial computer is used to control the audio amplification unit to amplify the detection sound file based on the detection result of the distance, and then play it through the sound player.

7. The device working status detection system according to claim 6, characterized in that: There are multiple sound players, which are divided into two groups and are respectively arranged on two opposite sides of the exterior of the target truck.

8. The device working status detection system according to claim 7, characterized in that: The detection sound file is a fixed frequency sound, and each group of the playing modules plays the detection sound files of different frequencies respectively.

9. A truck, characterized in that: A system for detecting the working status of the equipment according to any one of claims 1 to 8.

10. A method for detecting the working status of a device, characterized in that: include: In the process of traveling with the target truck, when it is detected that the target truck is traveling toward the device and the distance between the target truck and the device reaches a first distance, a detection sound file is played by a playback module arranged on the target truck; Receiving sound data after the device analyzes the detection sound file; The sound data is compared with the detection sound file, and whether the working state of the device is normal is determined according to the comparison result.

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