Multi-T equipment detection system

Abstract

The invention discloses a multi-T equipment detection system, which comprises at least one group of freight detection motorcade incorporated into an operation train, each group of freight detection motorcade comprises a power supply truck and a function detection truck, the power supply truck carries a vehicle-mounted power supply system, and the function detection truck carries a vehicle-mounted detection system. The vehicle-mounted detection system can detect the current state of the railway wagon operation safety monitoring system and judge the fault condition of the railway wagon operation safety monitoring system. On the basis of the truck-mounted vehicle-mounted detection system, the multi-T equipment is automatically detected in the truck operation process, more real truck body characteristics can be simulated, and more real test source signals are brought to the multi-T equipment; and normal vehicle marshalling can be added, normal transportation is carried out along with a train, interference to a driving organization is reduced, and the economic value of the system is improved.

Description

Technical Field

[0001] This application relates to the technical field of railway tracks, and particularly relates to a multi-T equipment detection system. Background Art

[0002] With the rapid development of China's railway industry, advanced monitoring technologies represented by the 5T system have been widely applied to the monitoring of the operation safety of railway freight cars. The 5T system is a general term for a series of high-tech devices used by the Chinese railway industry for vehicle operation safety monitoring. They are mainly deployed along railway lines to conduct real-time monitoring of running trains to ensure traffic safety. Here, "5T" usually refers to the following five main detection systems: THDS (Trace Hot box Detection System, infrared hot axle detection system), TFDS (Trouble of moving Freightcar Detection System, freight car fault trackside image detection system), TADS (Trackside Acoustic Detection System, trackside acoustic diagnosis system), TPDS (Truck Performance Detection System, tread damage detection system), TWDS (Wheelset Dynamic Detection System, freight car wheel dynamic detection system). The 5T system effectively prevents vehicle failures and potential safety hazards by monitoring the running status of freight cars in real time, ensuring the safety and efficiency of railway transportation. However, with the rapid growth of railway traffic volume and the continuous increase in train density, the daily inspection, maintenance, and other work of 5T equipment face unprecedented challenges.

[0003] Traditionally, the daily inspection of 5T equipment mainly relies on manual labor, which not only consumes a large amount of human and material resources but also has low efficiency and is difficult to achieve comprehensive and timely monitoring of the equipment. At the same time, there are many uncertain factors in the manual inspection process, such as the skill level and work attitude of the inspection personnel, which may affect the quality and effect of the inspection. In addition, frequent manual on-line maintenance may also bring additional safety hazards and affect the normal transportation order of the railway. Summary of the Invention

[0004] The purpose of this application is to provide a multi-T equipment detection system that can improve the above problems.

[0005] This application provides a multi-T equipment detection system, which includes: at least one group of freight detection fleets incorporated into the operating train formation.

[0006] Each of the freight detection fleets includes a power supply freight car and a function detection freight car. The function detection freight car is equipped with an on-vehicle detection system, and the power supply freight car is equipped with an on-vehicle power supply system for supplying power to the on-vehicle detection system in the same group.

[0007] The on-vehicle detection system is used to detect at least one of the following current states of the railway freight car operation safety monitoring system:

[0008] THDS system;

[0009] TFDS system;

[0010] TADS system;

[0011] TPDS system;

[0012] TWDS system.

[0013] It can be understood that the present application discloses a multi-T equipment detection system including at least one group of freight detection fleets incorporated into the operating train formation. Each group of freight detection fleets includes a power supply freight car and a function detection freight car. The power supply freight car is equipped with an on-vehicle power supply system, and the function detection freight car is equipped with an on-vehicle detection system. This on-vehicle detection system can detect the current state of the railway freight car operation safety monitoring system and judge the fault condition of the railway freight car operation safety monitoring system. Based on the freight car being equipped with an on-vehicle detection system, the present application automatically detects multi-T equipment during the operation of the freight car, which can not only simulate more real freight car body characteristics and bring more real test source signals to the multi-T equipment, but also can be incorporated into the normal vehicle formation and transported normally with the train, reducing the interference to train operation organization and enhancing the economic value of the system.

[0014] It can be understood that the present application provides an embodiment with multiple groups of freight detection fleets configured. Each freight detection fleet is configured with a separate power supply freight car, which realizes a scientific distribution of the layout of the vehicle detection system and an even power supply configuration under conditions such as meeting the power supply demand and the freight car weight reduction limit.

[0015] In an alternative embodiment of the present application, the at least one group of freight detection fleets includes a first freight detection fleet and a second freight detection fleet. Among them, the first freight detection fleet includes a first power supply freight car and a first function detection freight car, and the first function detection freight car is equipped with a first on-vehicle detection system; the second freight detection fleet includes a second power supply freight car and a second function detection freight car, and the second function detection freight car is equipped with a second on-vehicle detection system.

[0016] In an alternative embodiment of the present application, the first on-vehicle detection system is used to detect the current state of the THDS system; the second on-vehicle detection system is used to detect the current state of the following systems:

[0017] TFDS system;

[0018] TADS system;

[0019] TPDS system;

[0020] TWDS system.

[0021] It is understandable that the related equipment of the on-board detection system will increase the deadweight of the truck body. Therefore, this application provides a solution for the on-board detection system of each group of freight inspection fleet to detect different railway truck operation safety monitoring systems respectively. While meeting the requirements of multi-T equipment detection, the weight of each vehicle is reasonably distributed.

[0022] In an optional embodiment of the present application, the first vehicle-mounted detection system includes: a host control system and an axle box control system, a compass control system, a wheel control system and a first communication system electrically connected to the host control system;

[0023] The axle box control system has a built-in temperature sensor and a simulated heat source, which is used to simulate the working state of the axle box of the truck under the control of the host control system by the first function detection at different temperatures;

[0024] The azimuth ruler control system includes a mechanical structure and a position sensor, which is used to adjust the wheel angle of the first function detection truck under the control of the host control system;

[0025] The wheel control system includes a speed sensor and a load simulator, which are used to adjust the wheel speed and simulated load of the truck under the control of the host control system to simulate the hot axle condition under real operating conditions;

[0026] The first communication system is used for exchanging data with the THDS system, the freight inspection fleet or the ground control center under the control of the host control system;

[0027] The host control system is used to compare the detection results reported by the THDS system with known simulated environment data, and determine whether the THDS system has a fault according to the comparison result.

[0028] Optionally, the first vehicle-mounted detection system is disposed at the bottom of the first function detection truck.

[0029] Optionally, the host control system is specifically used to judge that the THDS system is operating normally when the detection results reported by the THDS system are consistent with known simulated environment data; and to judge that the THDS system is faulty when there is a deviation between the detection results reported by the THDS system and known simulated environment data.

[0030] In an alternative embodiment of the present application, the second vehicle-mounted detection system includes a vehicle-mounted main control unit, an AEI (Automatic Equipment Identification) control system connected to the vehicle-mounted main control unit, a second communication system, and system detection devices of at least one railway freight car operation safety monitoring system: The AEI control system includes an AEI control unit, an antenna unit, and a tag unit connected to the AEI control unit; The second communication system is used for data exchange with the railway freight car operation safety monitoring system, the freight detection fleet, or the ground control center under the control of the host control system.

[0031] In an alternative embodiment of the present application, the system detection devices include:

[0032] A vehicle-mounted camera and an image processing unit: The vehicle-mounted camera is used to collect image data during the operation of the second function detection freight car in real time, and the image processing unit is used to receive and process the image data and extract key feature information. The vehicle-mounted main control unit is used to compare and analyze the extracted key feature information with a pre-stored fault feature library, judge whether the second function detection freight car has a fault through pattern recognition technology, and control the second communication system to transmit the detection result to the ground control center in real time, so as to realize the detection of the TFDS system;

[0033] A sound player and an acoustic sensor, the sound player is used to simulate a fault sound sample under the control of the vehicle-mounted main control unit, and the acoustic sensor is used to capture the sound signal emitted by the wheel pair bearing of the second function detection freight car. The vehicle-mounted main control unit is used to extract the characteristic parameters related to bearing faults in the sound signal, analyze and process the characteristic parameters by using a fault diagnosis algorithm, judge whether the bearing has a fault, and control the second communication system to transmit the detection result to the ground control center in real time, so as to realize the detection of the TADS system;

[0034] A simulated wheel system and a wheel detection sensor, the simulated wheel system is used to simulate the operation state of the second function detection freight car and generate a wheel-rail force signal and / or a wheel pair tread damage signal similar to the actual operation; The wheel detection sensor is used to monitor the wheel-rail force signal and / or the wheel pair tread damage signal; The vehicle-mounted main control unit is used to receive the actual monitoring data of the TPDS system through the second communication system, and compare the processed result of the wheel-rail force signal and / or the wheel pair tread damage signal with the actual monitoring data to evaluate the monitoring accuracy and stability of the TPDS system, so as to realize the detection of the TPDS system;

[0035] A laser and a CCD camera, where the laser is used to generate a laser beam projected onto the tread of the wheel to be measured, and the CCD camera is installed at an appropriate position to capture the laser image on the wheel tread; the on-vehicle main control unit is used to identify key feature points in the laser image, calculate various parameters of the wheel, and control the second communication system to transmit the various parameters to the ground control center in real time, so as to realize the detection of the TWDS system.

[0036] In an alternative embodiment of the present application, the couplers of the power supply freight car and / or the function detection freight car are replaced with drawbars, thereby reducing the vehicle self-weight.

[0037] In an alternative embodiment of the present application, the power supply freight car and / or the function detection freight car are replaced with lighter bolster and side frames to reduce the self-weight of the components. That is, the weight of the bolster of the power supply freight car is less than a first threshold; the weight of the side frame of the power supply freight car is less than a second threshold; the weight of the bolster of the function detection freight car is less than a third threshold; the weight of the side frame of the function detection freight car is less than a fourth threshold.

[0038] Beneficial effects:

[0039] The present application discloses a multi-T equipment detection system, which includes at least one group of freight detection fleets incorporated into the operating train formation. Each group of freight detection fleets includes a power supply freight car and a function detection freight car. The power supply freight car is equipped with an on-vehicle power supply system, and the function detection freight car is equipped with an on-vehicle detection system. The on-vehicle detection system can detect the current state of the railway freight car operation safety monitoring system and judge the fault conditions of the railway freight car operation safety monitoring system. Based on the freight car equipped with the on-vehicle detection system, the multi-T equipment is automatically detected during the operation of the freight car, which can not only simulate more real freight car body characteristics and bring more real test source signals to the multi-T equipment, but also be incorporated into the normal vehicle formation and transported normally with the train, reducing the interference to the train operation organization and enhancing the economic value of the system.

[0040] The present application provides an embodiment with multiple groups of freight detection fleets configured. Each freight detection fleet is configured with a separate power supply freight car. Under the conditions of meeting the power supply requirements and the freight car weight reduction limit, etc., a scientific distribution of the vehicle detection system layout and a balanced power supply configuration are achieved.

[0041] The present application provides a solution in which the on-vehicle detection systems of each group of freight detection fleets detect different railway freight car operation safety monitoring systems respectively. While meeting the multi-T equipment detection, the weights of each vehicle are reasonably distributed.

[0042] To make the above objects, features, and advantages of the present application more obvious and understandable, the following specifically enumerates alternative embodiments and, in conjunction with the accompanying drawings, makes a detailed description as follows. Description of the Drawings

[0043] To more clearly illustrate the technical solutions of the embodiments of the present application, the accompanying drawings required for the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present application and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can also be obtained based on these drawings without creative efforts.

[0044] Figure 1 is a schematic structural diagram of the first freight detection fleet provided by the present application;

[0045] Figure 2 is a schematic structural diagram of the second freight detection fleet provided by the present application;

[0046] Figure 3 is a schematic diagram of the first vehicle-mounted detection system provided by the present application;

[0047] Figure 4 is a schematic diagram of the second vehicle-mounted detection system provided by the present application. Specific embodiments

[0048] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts belong to the scope of protection of the present application.

[0049] The present application provides a multi-T device detection system, which includes: at least one group of freight detection fleets incorporated into the operating train formation. Each group of freight detection fleets includes a power supply freight car and a function detection freight car. The function detection freight car is equipped with a vehicle-mounted detection system, and the power supply freight car is equipped with a vehicle-mounted power supply system for supplying power to the vehicle-mounted detection system of the same group. The vehicle-mounted detection system is used to detect at least one of the following current states of the railway freight car operation safety monitoring system: THDS system; TFDS system; TADS system; TPDS system; TWDS system.

[0050] It can be understood that the present application discloses a multi-T equipment detection system, which includes at least one group of freight detection fleets incorporated into an operating train formation. Each group of freight detection fleets includes a power supply freight car and a function detection freight car. The power supply freight car is equipped with an on-vehicle power supply system, and the function detection freight car is equipped with an on-vehicle detection system. The on-vehicle detection system can detect the current state of the railway freight car operation safety monitoring system and judge the fault condition of the railway freight car operation safety monitoring system. Based on the freight car being equipped with an on-vehicle detection system, the present application automatically detects multi-T equipment during the operation of the freight car, which can not only simulate more realistic freight car body characteristics and bring more realistic test source signals to the multi-T equipment, but also be incorporated into normal vehicle formations and transported normally with the train, reducing interference with train operation organization and enhancing the economic value of the system.

[0051] It can be understood that the present application provides an embodiment of configuring multiple groups of freight detection fleets. Each freight detection fleet is equipped with a separate power supply freight car, which realizes a scientific distribution of the layout of the vehicle detection system and an even power supply configuration under conditions such as meeting the power supply demand and the freight car weight reduction limit.

[0052] In an optional embodiment of the present application, as Figure 1 and Figure 2 shown, at least one group of freight detection fleets includes a first freight detection fleet 100 and a second freight detection fleet 200. Among them, the first freight detection fleet 100 includes a first power supply freight car 101 and a first function detection freight car 102, and the first function detection freight car 102 is equipped with a first on-vehicle detection system 10. The second freight detection fleet 200 includes a second power supply freight car 201 and a second function detection freight car 202, and the second function detection freight car 202 is equipped with a second on-vehicle detection system 20.

[0053] In an optional embodiment of the present application, the first on-vehicle detection system 10 is used to detect the current state of the THDS system. The second on-vehicle detection system 20 is used to detect the current state of the following systems: TFDS system; TADS system; TPDS system; TWDS system.

[0054] It can be understood that the related equipment of the on-vehicle detection system will increase the self-weight of the freight car body. Therefore, the present application provides a solution in which the on-vehicle detection systems of each group of freight detection fleets detect different railway freight car operation safety monitoring systems respectively. While meeting the detection of multi-T equipment, the weight of each vehicle is reasonably distributed.

[0055] THDS (Trace Hot box Detection System) detects the temperature of train bearings through infrared technology, promptly detects and warns of bearing overheating, and prevents hot-axle accidents caused by bearing failures. For example, when a freight train passes through a railway section equipped with THDS at normal speed, the system uses infrared detectors to perform non-contact measurements of the temperature of each vehicle's bearings. If the temperature of a bearing rises abnormally and exceeds the preset threshold, the THDS system will immediately sound an alarm and send relevant information (including vehicle number, bearing position, temperature value, etc.) to the monitoring center. Based on this information, the staff of the monitoring center can quickly determine whether it is necessary to conduct an emergency stop inspection of the vehicle or arrange a subsequent maintenance plan, thereby effectively avoiding serious safety accidents caused by bearing overheating.

[0056] In the present application, the first vehicle-mounted detection system 10 is used to detect the current state of the THDS system. In an optional embodiment of the present application, Figure 3 As shown, the first vehicle-mounted detection system 10 includes: a host control system 11 and an axle box control system 12 electrically connected to the host control system 11 , a compass control system 13 , a wheel control system 14 and a first communication system 15 .

[0057] The axle box control system 12 has a built-in temperature sensor and a simulated heat source, and is used to simulate the first function of detecting the working state of the axle box of the truck 102 at different temperatures under the control of the host control system 11;

[0058] A compass control system 13, including a mechanical structure and a position sensor, is used to adjust the wheel angle of the first function detection truck 102 under the control of the host control system 11;

[0059] The wheel control system 14 includes a speed sensor and a load simulator, and is used to adjust the wheel speed and simulated load of the first function detection truck 102 under the control of the host control system 11 to simulate the hot axle condition under real operating conditions;

[0060] The first communication system 15 is used for exchanging data with the THDS system, the freight inspection fleet or the ground control center under the control of the host control system 11;

[0061] The host control system 11 is used to compare the detection results reported by the THDS system with the known simulated environment data, and determine whether the THDS system has a fault according to the comparison result.

[0062] Optionally, the host control system 11 is specifically configured to determine that the THDS system is operating normally when the detection results reported by the THDS system are consistent with the known simulated environment data; and determine that the THDS system has a fault when there is a deviation between the detection results reported by the THDS system and the known simulated environment data.

[0063] Optionally, the first on-vehicle detection system 10 is disposed at the bottom of the first functional detection freight car 102.

[0064] In an alternative embodiment of the present application, as Figure 4 shown, the second on-vehicle detection system 20 includes an on-vehicle main control unit 21, and an AEI (Automatic Equipment Identification) control system, a second communication system 22, and system detection devices of at least one railway freight car operation safety monitoring system, which are connected to the on-vehicle main control unit 21. The AEI control system includes an AEI control unit 23, and an antenna unit 24 and a tag unit 25, which are connected to the AEI control unit 23; the second communication system 22 is configured for data exchange with the railway freight car operation safety monitoring system, the freight transportation detection fleet, or the ground control center under the control of the host control system 11.

[0065] The TFDS system, namely the Trouble of moving Freight car Detection System, is an intelligent system that uses high-speed cameras beside the track to dynamically detect running freight cars and promptly discover faults in freight car operation. This system focuses on detecting safety-critical parts such as the running gear, brake beams, suspension parts, pillow springs, large components, and coupler buffers of freight cars. Images of the running train are collected by high-speed cameras, and then analyzed and processed by a computer to calculate the running speed of the train, determine the type of the train, and extract the images of the key parts of the vehicle required by the system for storage. These images are displayed on the window computer in the form of one vehicle per file, and can be printed and transmitted as required. Through a human-machine combination method, faults such as damage, fracture, and loss of parts and components such as the bogie, braking device, and coupler buffer device of the vehicle can be identified, thereby achieving the purpose of dynamically detecting the quality of the vehicle.

[0066] In an alternative embodiment of the present application, the system detection device includes: an on-vehicle camera and an image processing unit. The on-vehicle camera is used to collect image data during the operation of the second functional detection truck 202 in real time, and the image processing unit is used to receive and process the image data and extract key feature information. The on-vehicle main control unit is used to compare and analyze the extracted key feature information with a pre-stored fault feature library, judge whether the second functional detection truck 202 has a fault through pattern recognition technology, and control the second communication system to transmit the detection result to the ground control center in real time, so as to realize the detection of the TFDS system.

[0067] The TADS system, namely the Trackside Acoustic Detection System, is one of the ground safety monitoring systems for the running state of freight cars. It installs an acoustic sensor array on both sides of the railway track to collect the sound signals emitted by the wheel pairs and bearings during the operation of the freight car in real time, and uses advanced signal processing and analysis technologies to process and identify these sound signals, so as to realize the early warning and diagnosis of faults in the wheel pairs and bearings of the freight car. The TADS system is of great significance for ensuring the safety of railway freight transportation and improving transportation efficiency.

[0068] In an alternative embodiment of the present application, the system detection device includes: a sound player and an acoustic sensor. The sound player is used to simulate a fault sound sample under the control of the on-vehicle main control unit, and the acoustic sensor is used to capture the sound signals emitted by the wheel pairs and bearings of the second functional detection truck 202. The on-vehicle main control unit is used to extract the characteristic parameters related to bearing faults from the sound signals, analyze and process the characteristic parameters using a fault diagnosis algorithm, judge whether the bearing has a fault, and control the second communication system to transmit the detection result to the ground control center in real time, so as to realize the detection of the TADS system;

[0069] The TPDS system, whose full name is Train Performance Detection System, is also known as the tread damage detection system. It is an advanced vehicle dynamic detection technology mainly used to monitor the running state of railway vehicles and ensure the safety and stability of train operation. The TPDS system monitors key parameters such as wheel-rail force and wheel pair tread damage during operation in real time through a sensor array arranged along the railway line, so as to timely discover and warn potential vehicle operation safety hazards.

[0070] In an alternative embodiment of the present application, the system detection device includes: an analog wheel system and a wheel detection sensor. The analog wheel system is used to simulate the operating state of the second functional detection truck 202 and generate a wheel-rail force signal and / or a wheel set tread damage signal similar to the actual operation; the wheel detection sensor is used to monitor the wheel-rail force signal and / or the wheel set tread damage signal; the vehicle-mounted main control unit is used to receive the actual monitoring data of the TPDS system through the second communication system, and compare the processed results of the wheel-rail force signal and / or the wheel set tread damage signal with the actual monitoring data to evaluate the monitoring accuracy and stability of the TPDS system, so as to realize the detection of the TPDS system;

[0071] TWDS (Wheelset Dynamic Detection System) is applicable to the dynamic detection of the external dimensions of railway freight car wheelsets, and can automatically detect parameters such as the thickness of the wheel flange, the height of the wheel flange, the vertical wear of the wheel flange, the wheel diameter, the inner distance between wheel sets, the circumferential wear of the tread, and the thickness of the wheel rim. At present, the existing TWDS vehicle wheel set size dynamic automatic detection device on railways is applicable to the dynamic detection of the external geometric dimensions of railway vehicle wheel sets in an on-line manner, that is, measuring the relevant geometric dimensions of wheels during the operation of the train. Due to factors such as rail settlement and train vibration, the accuracy of on-line detection of wheel set dimensions will be affected, which requires a camera that is more adaptable to the specific environment during train operation to meet its detection requirements.

[0072] In an alternative embodiment of the present application, the system detection device includes: a laser and a CCD camera. The laser is used to generate a laser beam projected onto the tread of the measured wheel, and the CCD camera is installed at a suitable position to capture the laser image on the wheel tread; the vehicle-mounted main control unit is used to identify the key feature points in the laser image, and then calculate the various parameters of the wheel, and control the second communication system to transmit the various parameters to the ground control center in real time, so as to realize the detection of the TWDS system.

[0073] In an alternative embodiment of the present application, the coupler of the power supply truck and / or the functional detection truck is replaced with a drawbar to reduce the vehicle self-weight.

[0074] In an alternative embodiment of the present application, the power supply truck and / or the functional detection truck are replaced with a lighter bolster and side frame to reduce the self-weight of the components. That is, the weight of the bolster of the power supply truck is less than the first threshold; the weight of the side frame of the power supply truck is less than the second threshold; the weight of the bolster of the functional detection truck is less than the third threshold; the weight of the side frame of the functional detection truck is less than the fourth threshold.

[0075] In various embodiments of the present disclosure, the expressions "first", "second", "the first", or "the second" used may modify various components regardless of order and / or importance, but these expressions do not limit the corresponding components. The above expressions are only configured for the purpose of distinguishing an element from other elements. For example, a first user device and a second user device represent different user devices, although both are user devices. For example, without departing from the scope of the present disclosure, the first element may be referred to as the second element, and similarly, the second element may be referred to as the first element.

[0076] When an element (e.g., a first element) is referred to as "(operatively or communicatively) coupled" or "(operatively or communicatively) coupled to" or "connected to" another element (e.g., a second element), it should be understood that the one element is directly connected to the other element or the one element is indirectly connected to the other element via yet another element (e.g., a third element). In contrast, it can be understood that when an element (e.g., a first element) is referred to as "directly connected" or "directly coupled" to another element (a second element), no element (e.g., a third element) is inserted therebetween.

[0077] It should be noted that in this article, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element. In addition, components, features, and elements with the same name in different embodiments of the present application may have the same meaning or may have different meanings, and their specific meanings need to be determined based on their explanations in the specific embodiments or further in combination with the context of the specific embodiments.

[0078] The above description is only an optional embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solutions formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, technical solutions formed by mutually replacing the above features with (but not limited to) technical features having similar functions disclosed in the present application.

[0079] Depending on the context, as used herein, the words "if", "when" can be interpreted as "when...", "while...", "in response to determining", or "in response to detecting". Similarly, depending on the context, the phrase "if it is determined" or "if it is detected (stated condition or event)" can be interpreted as "when it is determined", "in response to determining", "when it is detected (stated condition or event)", or "in response to detecting (stated condition or event)".

[0080] The above description is only an optional embodiment of the present application and an explanation of the applied technical principles. Those skilled in the art should understand that the scope of the invention involved in the present application is not limited to the technical solution formed by the specific combination of the above technical features, and should also cover other technical solutions formed by any combination of the above technical features or their equivalent features without departing from the above inventive concept. For example, the technical solution formed by mutually replacing the above features with the technical features (but not limited to) having similar functions disclosed in the present application.

[0081] The above are only optional embodiments of the present application and are not used to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multi-T device detection system, characterized in that: include: At least one freight inspection team is incorporated into the operational train. Each group of the freight inspection fleet includes a power supply truck and a function inspection truck, the function inspection truck is equipped with an on-board inspection system, and the power supply truck is equipped with an on-board power supply system for supplying power to the on-board inspection system of the same group; The on-board detection system is used to detect the current status of at least one of the following railway freight car operation safety monitoring systems: THDS system; TFDS system; TADS system; TPDS system; TWDS system.

2. The multi-T device detection system according to claim 1, characterized in that: The at least one group of freight inspection fleets includes a first freight inspection fleet and a second freight inspection fleet; Among them, the first freight inspection fleet includes a first power supply truck and a first function inspection truck, and the first function inspection truck is equipped with a first vehicle-mounted inspection system; the second freight inspection fleet includes a second power supply truck and a second function inspection truck, and the second function inspection truck is equipped with a second vehicle-mounted inspection system.

3. The multi-T device detection system according to claim 2, characterized in that: The first vehicle-mounted detection system is used to detect the current state of the THDS system; the second vehicle-mounted detection system is used to detect the current state of the following systems: TFDS system; TADS system; TPDS system; TWDS system.

4. The multi-T device detection system according to claim 3, characterized in that: The first vehicle-mounted detection system includes: a host control system and an axle box control system, a compass control system, a wheel control system and a first communication system electrically connected to the host control system; The axle box control system has a built-in temperature sensor and a simulated heat source, which is used to simulate the working state of the axle box of the first function detection truck at different temperatures under the control of the host control system; The azimuth ruler control system includes a mechanical structure and a position sensor, which is used to adjust the wheel angle of the first function detection truck under the control of the host control system; The wheel control system includes a speed sensor and a load simulator, which are used to adjust the wheel speed and simulated load of the truck under the control of the host control system to simulate the hot axle condition under real operating conditions; The first communication system is used for exchanging data with the THDS system, the freight inspection fleet or the ground control center under the control of the host control system; The host control system is used to compare the detection results reported by the THDS system with known simulated environment data, and determine whether the THDS system has a fault according to the comparison result.

5. The multi-T device detection system according to claim 4, characterized in that: The first vehicle-mounted detection system is disposed at the bottom of the first function detection truck.

6. The multi-T device detection system according to claim 4, characterized in that: The host control system is specifically used to determine that the THDS system is working normally when the detection results reported by the THDS system are consistent with the known simulation environment data; when there is a deviation between the detection results reported by the THDS system and the known simulation environment data, determine that the THDS system is faulty.

7. The multi-T device detection system according to claim 3, characterized in that: The second vehicle-mounted detection system includes a vehicle-mounted main control unit and an AEI control system connected to the vehicle-mounted main control unit, a second communication system and at least one system detection device of a railway freight car operation safety monitoring system: The AEI control system includes an AEI control unit and an antenna unit and a tag unit connected to the AEI control unit; The second communication system is used to exchange data with the railway freight car operation safety monitoring system, the freight inspection fleet or the ground control center under the control of the host control system.

8. The multi-T device detection system according to claim 7, characterized in that: The system detection equipment comprises: On-board camera and image processing unit: The on-board camera is used to collect image data in real time during the operation of the second function detection truck, and the image processing unit is used to receive and process the image data and extract key feature information. The on-board main control unit is used to compare and analyze the extracted key feature information with the pre-stored fault feature library, determine whether the second function detection truck has a fault through pattern recognition technology, and control the second communication system to transmit the detection results to the ground control center in real time, thereby realizing the detection of the TFDS system; A sound player and an acoustic sensor, wherein the sound player is used to simulate a fault sound sample under the control of the vehicle-mounted main control unit, and the acoustic sensor is used to capture the sound signal emitted by the wheelset bearing of the second function detection truck. The vehicle-mounted main control unit is used to extract characteristic parameters related to the bearing fault in the sound signal, analyze and process the characteristic parameters using a fault diagnosis algorithm, determine whether the bearing has a fault, and control the second communication system to transmit the detection results to the ground control center in real time, thereby realizing the detection of the TADS system; A simulated wheel system and a wheel detection sensor, wherein the simulated wheel system is used to simulate the second function to detect the running state of the truck, and generate a wheel-rail force signal and / or a wheelset tread damage signal similar to the actual running state; the wheel detection sensor is used to monitor the wheel-rail force signal and / or the wheelset tread damage signal; the on-board main control unit is used to receive the actual monitoring data of the TPDS system through the second communication system, and compare the processed results of the wheel-rail force signal and / or the wheelset tread damage signal with the actual monitoring data, so as to evaluate the monitoring accuracy and stability of the TPDS system, thereby realizing the detection of the TPDS system; A laser and a CCD camera, wherein the laser is used to generate a laser beam projected onto the tread of the wheel to be tested, and the CCD camera is installed at a suitable position to capture the laser image on the wheel tread; the on-board main control unit is used to identify the key feature points in the laser image, and then calculate various parameters of the wheel, and control the second communication system to transmit the various parameters to the ground control center in real time, thereby realizing the detection of the TWDS system.

9. The multi-T device detection system according to any one of claims 1 to 8, characterized in that: The couplers of the power supply truck and / or the function detection truck are replaced with a towing rod.

10. The multi-T device detection system according to any one of claims 1 to 8, characterized in that: The power supply truck and / or the functional detection truck are equipped with weight-reducing bolsters and side frames.

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