CN111002970A - Train brake fault detection method - Google Patents
Train brake fault detection method Download PDFInfo
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- CN111002970A CN111002970A CN201911301987.XA CN201911301987A CN111002970A CN 111002970 A CN111002970 A CN 111002970A CN 201911301987 A CN201911301987 A CN 201911301987A CN 111002970 A CN111002970 A CN 111002970A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T17/00—Component parts, details, or accessories of power brake systems not covered by groups B60T8/00, B60T13/00 or B60T15/00, or presenting other characteristic features
- B60T17/18—Safety devices; Monitoring
- B60T17/22—Devices for monitoring or checking brake systems; Signal devices
- B60T17/228—Devices for monitoring or checking brake systems; Signal devices for railway vehicles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L15/00—Indicators provided on the vehicle or vehicle train for signalling purposes ; On-board control or communication systems
- B61L15/0018—Communication with or on the vehicle or vehicle train
- B61L15/0027—Radio-based, e.g. using GSM-R
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L27/00—Central railway traffic control systems; Trackside control; Communication systems specially adapted therefor
- B61L27/20—Trackside control of safe travel of vehicle or vehicle train, e.g. braking curve calculation
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Transportation (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
- Regulating Braking Force (AREA)
- Valves And Accessory Devices For Braking Systems (AREA)
Abstract
The invention discloses a train brake fault detection method, which comprises the following steps: 1) establishing a wireless ad hoc network between the wireless vehicle-mounted control device and the vehicle-mounted monitor; 2) receiving train brake control information through a wireless vehicle-mounted control device, detecting the pressure state of each key brake pipeline of the vehicle, and analyzing and judging the brake fault of the vehicle; 3) the vehicle-mounted monitoring instrument receives the brake fault information obtained by judgment and uploaded by each vehicle-mounted control device, sequencing the starting time of abnormal pressure change of the brake pipelines of the plurality of sections of vehicles in sequence, sequencing the magnitude of the pressure value at the same time, and finding the vehicle with the abnormal pressure change of the brake pipelines at first, thereby realizing the accurate positioning of the fault vehicle; 4) and the operation terminal receives and displays the brake fault information uploaded by the vehicle-mounted monitor and forwarded by the server.
Description
Technical Field
The invention relates to the technical field of railway train brake control, in particular to a train brake fault detection method.
Background
The railway freight car is organized into the row operation on the circuit throughout the year, and the vehicle braking system performance mainly relies on when the train passes through the train inspection field, stops and carries out the braking test, does not carry out real-time supervision to it in the operation process, when breaking down, can lead to stopping a bit, influences the driving order. The braking test is usually completed by matching train inspection field test equipment or locomotive operation with manual inspection of vehicle actions. When the train is inspected, a plurality of trains need to be inspected by one person, the time is short, the labor intensity is high, the faults are easily missed to be inspected, the manual vehicle action inspection is rough, the faults occurring when the trains are inspected are not always reappeared, the vehicle faults can not be found in time, and the crisis driving safety is realized.
In order to automatically monitor the brake failure of the railway wagon, a brake pipeline air pressure detection device is additionally arranged on a vehicle, so that the pressure change data is collected and analyzed in real time. However, the freight train is mainly braked and controlled by the pressure change of a brake pipe penetrating through the whole train, and each train is provided with a plurality of brake pipelines which influence the train and even the train. Since the brake pipe pressures of the vehicles in the train are mutually influenced, it cannot be determined whether each abnormal change of the pipe pressure is caused by the failure of the vehicle, the pipe pressure change of other vehicles, or the brake failure in the train is caused by improper operation of a locomotive driver or a vehicle problem, so that the brake pipe pressure monitoring data of the vehicle alone cannot be clearly positioned and determined, that is, the brake failure of the train cannot be clearly judged and positioned.
Disclosure of Invention
In order to solve the above problems, the present invention provides a train braking fault detection method, which includes the following steps:
s1, arranging a wireless vehicle-mounted control device in each section of train, wherein the wireless vehicle-mounted control device is used for receiving train braking control information, analyzing and judging train braking faults according to the train braking control information and the pressure state of a braking pipeline and forming braking fault information;
s2, the wireless vehicle-mounted control device is provided with a pressure sensor for detecting the pressure of each brake pipeline of the vehicle, and the pressure sensor is used for detecting the pressure change state of each key brake pipeline of the vehicle;
s3, arranging a vehicle-mounted monitoring instrument on a cab or a certain section of vehicle of the train, establishing a wireless ad hoc network between the vehicle-mounted monitoring instrument and the wireless vehicle-mounted control device according to train formation information, and receiving brake fault information sent by the wireless vehicle-mounted control device through the wireless ad hoc network;
and S4, arranging an operation terminal on the ground communication platform, wherein the operation terminal is used for sending train marshalling information to the vehicle-mounted monitoring instrument through a wireless network, receiving and displaying the braking fault information forwarded by the wireless vehicle-mounted control device, and storing the braking fault information into a database.
Further, the wireless vehicle-mounted control device compares and judges brake control information and brake pipe pressure data detected by the pressure sensor, and sends the judged brake fault information and the extracted abnormal change data of the brake pipe pressure to the vehicle-mounted monitoring instrument.
Further, if the wireless vehicle-mounted control device does not receive the brake control information, the pressure sensor detects that the change value of the brake pipeline pressure reaches a set value, and the fault type, the pressure value before and after the change and the time during the change are sent to the vehicle-mounted monitoring instrument.
Furthermore, the vehicle-mounted monitor sorts the received time of the pressure change of the brake pipelines of the plurality of sections of vehicles in sequence, and sorts the pressure values at the same time, so that the vehicle with the abnormal pressure change of the brake pipelines firstly is found, and the fault vehicle is positioned.
Further, if the pressure sensor does not detect the pressure change of the brake pipeline but performs the action of braking or relieving, the vehicle is judged to have the fault of natural braking or natural relieving, and the wireless vehicle-mounted control device sends the fault type and the occurrence time to the vehicle-mounted monitoring instrument.
Furthermore, the brake fault judged by the wireless vehicle-mounted control device and the brake fault finally judged by the vehicle-mounted monitoring instrument are collected by the vehicle-mounted monitoring instrument and then sent to the server through a wireless network, and the server pushes brake fault information to the operation terminal in time to form an alarm prompt.
Furthermore, an RFID transmission device is arranged at a detection station beside the train track and used for receiving the brake fault information sent by the wireless vehicle-mounted control device and uploading the brake fault information to a server.
Further, the RFID transmission device includes a dynamic readout device, the dynamic readout device includes a wireless transceiver, a transceiver antenna, and a wheel sensor, and the wireless transceiver is disposed in the detection station and connected to the transceiver antenna and the wheel sensor mounted on the track via a cable.
Further, the wheel sensor is an electromagnetic railway wheel sensor or a permanent magnet railway wheel sensor.
Further, the RFID transmission device comprises a static reading device, and the static reading device collects and stores pressure data of the air brake, which is collected and stored by the vehicle-mounted monitoring device in the train wind test process; the train wind testing process is a braking test of the train on the air brake.
The invention has the beneficial effects that:
(1) the wireless vehicle-mounted control device compares and judges the brake control information and the brake pipeline pressure data, the brake fault information obtained by judgment is sent to the vehicle-mounted monitoring instrument, the vehicle-mounted monitoring instrument sequences the received time of the change of the brake pipeline pressure of the plurality of sections of vehicles in sequence, and sequences the magnitude of the pressure value at the same time, so that the vehicle which generates abnormal change of the brake pipeline pressure at first can be found, and the accurate positioning of the fault vehicle is realized;
(2) when the wireless vehicle-mounted control device does not receive the brake control information, but detects that the change value of the brake pipeline pressure reaches a set value through the pressure sensor, the fault type and the fault content can be fed back to the vehicle-mounted monitoring instrument in time;
(3) when the pressure sensor does not detect the pressure change of the brake pipeline but has braking or relieving action, the invention can judge that the vehicle has natural braking or natural relieving fault, thereby utilizing the wireless vehicle-mounted control device to feed the fault type and the occurrence time back to the vehicle-mounted monitor;
(4) the invention can receive the brake fault information sent by the wireless vehicle-mounted control device in real time through the RFID transmission device of the detection station arranged beside the train track, and meanwhile, the static reading device of the invention is used for collecting and storing the pressure data of the air brake machine acquired and stored by the vehicle-mounted monitoring device in the train wind test process, and the pressure data is uploaded to the server in time, thereby realizing the rapid update of the data.
Drawings
FIG. 1 is a schematic view of a train brake failure detection method of embodiment 1;
FIG. 2 is a schematic view of a train brake failure detection method of embodiment 4;
reference numerals: the system comprises a wireless vehicle-mounted control device 1, a vehicle-mounted monitor 2, an operation terminal 3, a server 4, a driver cab 5, a vehicle 6 and an RFID transmission device 7.
Detailed Description
In order to more clearly understand the technical features, objects, and effects of the present invention, embodiments of the present invention will now be described with reference to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the preferred embodiment of the invention, are intended for purposes of illustration only and are not intended to limit the scope of the invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The embodiment provides a train braking fault detection method, as shown in fig. 1, including the following steps:
s1, arranging a wireless vehicle-mounted control device in each section of train, wherein the wireless vehicle-mounted control device is used for receiving train braking control information, analyzing and judging train braking faults according to the train braking control information and the pressure state of a braking pipeline and forming braking fault information. The wireless vehicle-mounted control device can detect the change of a brake pipeline and generate a train brake control instruction, can also receive the train brake control instruction sent by a vehicle-mounted monitor or a cab, generates air exhaust decompression and air charging boosting control on the brake pipeline, and can also analyze and judge whether the vehicle breaks down or not by utilizing the received pressure change value of the brake pipeline.
S2, the wireless vehicle-mounted control device is provided with a pressure sensor for detecting the pressure of each brake pipeline of the vehicle, and the pressure sensor is used for detecting the pressure change state of each key brake pipeline of the vehicle;
and S3, arranging a vehicle-mounted monitoring instrument on a cab or a certain section of vehicle of the train, establishing a wireless ad hoc network between the vehicle-mounted monitoring instrument and the wireless vehicle-mounted control device according to train formation information, and receiving brake fault information sent by the wireless vehicle-mounted control device through the wireless ad hoc network. The wireless vehicle-mounted monitor is responsible for establishing and managing an ad hoc wireless network, summarizing and processing information among the wireless vehicle-mounted monitor, the wireless vehicle-mounted control device and the operation terminal, summarizing and switching information in various communication modes, automatically processing response to various signals according to set logic, and providing calibration values of a clock and pressure air in a train network. The wireless vehicle-mounted monitoring instrument applies train marshalling information to the control terminal through the server and GPRS communication, calls and constructs a management train network according to the train marshalling information, and can timely send the server and transfer the server to the operation terminal through GPRS communication after processing train state information collected by the self-organized wireless network. The vehicle-mounted monitoring instrument can quickly broadcast the brake control command to other vehicles in the train in the ad hoc wireless network.
And S4, arranging an operation terminal on the ground communication platform, sending train marshalling information to the vehicle-mounted monitoring instrument through the wireless network, receiving and displaying the braking fault information forwarded by the wireless vehicle-mounted control device, and storing the braking fault information into a database. The operation terminal and the vehicle-mounted monitor communicate through SOCKET (data transmission mode) to acquire or forward train formation information, receive alarm and position state information and interact corresponding data with a database, wherein the database is responsible for storing, retrieving and maintaining service data. The operation terminal provides a human-computer interface to realize the display of information such as marshalling, alarming, the state of the vehicle-mounted monitor and the wireless vehicle-mounted control device.
Specifically, the wireless vehicle-mounted control device compares and judges the brake control information and the brake pipe pressure data detected by the pressure sensor, and sends the judged brake fault information and the extracted abnormal change data of the brake pipe pressure to the vehicle-mounted monitoring instrument. If the wireless vehicle-mounted control device does not receive the brake control information, the pressure sensor detects that the change value of the brake pipeline pressure reaches a set value, and the fault type, the pressure values before and after the change and the time during the change are sent to the vehicle-mounted monitor. The vehicle-mounted monitor sorts the received time of the pressure change of the brake pipelines of the plurality of sections of vehicles in sequence, and sorts the pressure values at the same time, so that the vehicle with the abnormal pressure change of the brake pipelines at first is found, and the fault vehicle is positioned.
In addition, if the pressure sensor does not detect the pressure change of the brake pipeline but performs the action of braking or relieving, the natural braking or natural relieving fault of the vehicle is judged, and the wireless vehicle-mounted control device sends the fault type and the occurrence time to the vehicle-mounted monitoring instrument.
After the brake fault is judged, the brake fault judged by the wireless vehicle-mounted control device and the brake fault finally judged by the vehicle-mounted monitoring instrument are collected by the vehicle-mounted monitoring instrument and then sent to the server through the wireless network, and the server pushes brake fault information to the operation terminal in time to form an alarm prompt.
Example 2
This example is based on example 1:
the wireless vehicle-mounted control device comprises a pneumatic integrated subsystem and an electric control subsystem, wherein the pneumatic integrated subsystem is electrically connected with the electric control subsystem in a two-way mode and comprises a sensing module, pressure sensors are arranged on key gas circuits of the sensing module, the electric control subsystem is electrically connected with the sensing module and sends the pressure change information of a brake pipeline detected by the pressure sensors to the electric control subsystem. The electric control subsystem comprises a first antenna, a first wireless communication module, a first operation processing circuit, a first storage battery and a first power management module, the first wireless communication module is connected with the vehicle-mounted monitor through the first antenna, the first operation processing circuit is connected with the first wireless communication module and the pressure sensor, and the first storage battery and the first power management module are connected with the first wireless communication module and the first operation processing circuit.
The pneumatic integration subsystem acquires the pressure of the brake pipeline in real time through the pressure sensor. The electric control subsystem manages the power consumption demand of the electric control subsystem, exchanges information with the vehicle-mounted monitor through a wireless ad hoc network established in the first wireless communication module and the train, calculates and processes pressure change information of each pipeline to generate a braking or relieving control instruction, sends the braking or relieving control instruction to the vehicle-mounted monitor, or receives the instruction sent by the vehicle-mounted monitor to control the action of the solenoid valve, simultaneously calculates and monitors the pressure of each braking pipeline in real time, judges a braking fault and reports the braking fault to the vehicle-mounted monitor.
When the vehicle where the wireless vehicle-mounted control device is located is positioned at the head of the train, the pressure sensor monitors the change of the pressure of each pipeline, and a control instruction for braking or relieving the train can be formed and sent to the monitor; when the wireless vehicle-mounted control device is not the first vehicle, the wireless vehicle-mounted control device can receive a control command of train braking or releasing, which is issued by the monitor.
The wireless vehicle-mounted control device is used for constantly acquiring and calculating the pressure of the vehicle pipeline in real time, judging that abnormal information can be reported to the vehicle-mounted monitor, and receiving a polling instruction of the vehicle-mounted monitor to report state information such as the pressure of the train pipe and the voltage of the first storage battery to the vehicle-mounted monitor.
The first storage battery stores redundant electric energy when the external power supply inputs power supply, provides the electric energy for the wireless vehicle-mounted control device when the external power supply does not supply power, and the first power supply management module conditions the external power supply and manages the power consumption of the vehicle-mounted control device and the charging and discharging of the storage battery.
The wireless vehicle-mounted control device is also provided with an electric appliance box and a power switch, wherein the electric appliance box is externally connected with a cable socket, an external power supply can be accessed to provide power for the wireless vehicle-mounted control device, and a pressure change signal of the brake cylinder can also be accessed. The power switch can cut off the input of an external power supply and the output of the current of the first storage battery, so that the wireless vehicle-mounted control device stops working.
Example 3
This example is based on example 1:
the vehicle-mounted monitor comprises a second antenna, a second wireless communication module, a second operation processing circuit, a second power management module and a second storage battery, the second wireless communication module is connected with the wireless vehicle-mounted control device and the server through the second antenna, the second operation processing circuit is connected with the second wireless communication module, and the second storage battery and the second power management module are both connected with the second wireless communication module and the second operation processing circuit.
Specifically, the vehicle-mounted monitor is provided with 4 second wireless communication modules and 1 GPS receiving module, wherein the GPS receiving module is used for positioning the vehicle-mounted monitor and receiving time synchronization information; the 1 st second wireless communication module is a GPRS communication module and is responsible for communicating with the server and is realized by utilizing a public wireless mobile network; the 2 nd second wireless communication module is a configuration module, receives and transmits information of the handheld mobile equipment, and can update programs, set parameters and download data of the wireless vehicle-mounted monitor through the handheld mobile equipment; the 3 rd second wireless communication module is a train network communication module and is responsible for communication with wireless communication nodes in a train wireless local area network; the 4 th second wireless communication module is a point-to-point wireless communication module and is responsible for wireless communication with a locomotive cab.
The GPS receiving module obtains train GPS position signals and standard time information, positions the train and performs clock synchronization on a train network; the GPRS communication module is responsible for information interaction between the train wireless network and the operation terminal, acquires train marshalling information from the operation terminal, and sends train state information acquired from the train wireless network to the operation terminal through the server; the configuration module is responsible for communication with the handheld mobile equipment, and train number setting, train marshalling adjustment input and software upgrading of the vehicle-mounted monitor are obtained through the handheld mobile equipment; the train network communication module calls train network nodes by using train marshalling information, establishes a train wireless communication network with the train and independent of the train, and manages information interaction in the train network; the point-to-point wireless communication module is responsible for communication between the vehicle-mounted monitor and the train cab, and is mainly used for prompting the condition of a train wireless network to a driver and receiving operation control information of the driver on the train network.
Example 4
This example is based on example 1:
as shown in fig. 2, in the embodiment, an RFID transmission device is arranged at a detection station beside a train track, and the RFID transmission device is used for receiving brake failure information sent by a wireless vehicle-mounted control device and uploading the brake failure information to a server. The RFID transmission device comprises a dynamic reading device and a static reading device, the dynamic reading device comprises a wireless transceiver, a transceiver antenna and a wheel sensor, and the wireless transceiver is arranged in the detection station and is connected with the transceiver antenna and the wheel sensor which are arranged on the track through cables. Specifically, the wheel sensor is an electromagnetic railway wheel sensor or a permanent magnet railway wheel sensor. In addition, the static reading device is used for collecting pressure data of the air brake, which is collected and stored by the vehicle-mounted monitoring device in the train wind testing process, wherein the train wind testing process is a braking test of the train on the air brake.
The foregoing is illustrative of the preferred embodiments of this invention, and it is to be understood that the invention is not limited to the precise form disclosed herein and that various other combinations, modifications, and environments may be resorted to, falling within the scope of the concept as disclosed herein, either as described above or as apparent to those skilled in the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or orientations or positional relationships conventionally placed when the present invention is used, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," and "connected" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; either a wired or wireless connection.
Claims (10)
1. A train brake fault detection method is characterized by comprising the following steps:
s1, arranging a wireless vehicle-mounted control device in each section of train, wherein the wireless vehicle-mounted control device is used for receiving train braking control information, analyzing and judging train braking faults according to the train braking control information and the pressure state of a braking pipeline and forming braking fault information;
s2, the wireless vehicle-mounted control device is provided with a pressure sensor for detecting the pressure of each brake pipeline of the vehicle, and the pressure sensor is used for detecting the pressure change state of each key brake pipeline of the vehicle;
s3, arranging a vehicle-mounted monitoring instrument on a cab or a certain section of vehicle of the train, establishing a wireless ad hoc network between the vehicle-mounted monitoring instrument and the wireless vehicle-mounted control device according to train formation information, and receiving brake fault information sent by the wireless vehicle-mounted control device through the wireless ad hoc network;
and S4, arranging an operation terminal on the ground communication platform, wherein the operation terminal is used for sending train marshalling information to the vehicle-mounted monitoring instrument through a wireless network, receiving and displaying the braking fault information forwarded by the wireless vehicle-mounted control device, and storing the braking fault information into a database.
2. The train brake failure detection method according to claim 1, wherein the wireless vehicle-mounted control device compares and discriminates brake control information with brake pipe pressure data detected by the pressure sensor, and sends the discriminated brake failure information and the extracted abnormal change data of the brake pipe pressure to the vehicle-mounted monitor.
3. The train brake failure detection method according to claim 2, wherein if the wireless vehicle-mounted control device does not receive brake control information, but detects that the change value of the brake pipe pressure reaches a set value through the pressure sensor, the type of the failure, the pressure values before and after the change and the time when the change occurs are sent to the vehicle-mounted monitor.
4. The train brake fault detection method according to claim 3, wherein the vehicle-mounted monitor sorts the received time of the pressure change of the brake pipelines of the plurality of sections of vehicles in sequence, and sorts the magnitude of the pressure value at the same time, so as to find the vehicle with the first abnormal change of the pressure of the brake pipelines and realize the positioning of the fault vehicle.
5. The train brake fault detection method according to claim 1, wherein if the pressure sensor does not detect the brake pipe pressure change but performs the brake or mitigation action, the occurrence of the natural brake or natural mitigation fault of the train is determined, and the wireless vehicle-mounted control device sends the fault type and the occurrence time to the vehicle-mounted monitor.
6. The train brake fault detection method according to claim 4 or 5, wherein the brake fault determined by the wireless vehicle-mounted control device and the brake fault finally determined by the vehicle-mounted monitoring instrument are collected by the vehicle-mounted monitoring instrument and then sent to a server through a wireless network, and the server pushes brake fault information to the operation terminal in time to form an alarm prompt.
7. The train braking fault detection method according to claim 1, wherein an RFID transmission device is arranged at a detection station beside a train track, and the RFID transmission device is used for receiving braking fault information sent by a wireless vehicle-mounted control device and uploading the information to a server.
8. The train braking fault detection method of claim 7, wherein the RFID transmission device comprises a dynamic readout device, the dynamic readout device comprises a wireless transceiver, a transceiver antenna and a wheel sensor, the wireless transceiver is arranged in the detection station and is connected with the transceiver antenna and the wheel sensor which are installed on the track through cables.
9. The train brake failure detection method of claim 8, wherein the wheel sensor is an electromagnetic type railway wheel sensor or a permanent magnet type railway wheel sensor.
10. The train brake failure detection method according to claim 7, wherein the RFID transmission device comprises a static readout device, and the static readout device collects and stores pressure data of the air brake machine collected by the on-board monitoring device during a train wind test; the train wind testing process is a braking test of the train on the air brake.
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| CN111591278A (en) * | 2020-06-09 | 2020-08-28 | 南京铁道职业技术学院 | Monitoring platform for brake condition of high-speed rail |
| CN111736097A (en) * | 2020-08-19 | 2020-10-02 | 季华实验室 | Brake circuit fault diagnosis circuit of servo driver |
| CN112141069A (en) * | 2020-09-10 | 2020-12-29 | 中车长春轨道客车股份有限公司 | Health management system of braking and air supply system for motor train unit |
| CN112455413A (en) * | 2020-12-23 | 2021-03-09 | 神华铁路装备有限责任公司 | Train brake monitoring system and railway wagon |
| CN112606813A (en) * | 2020-12-23 | 2021-04-06 | 神华铁路装备有限责任公司 | Train driver signal prompter and train brake monitoring system |
| CN112612234A (en) * | 2020-12-23 | 2021-04-06 | 神华铁路装备有限责任公司 | Train test system and method for electro-pneumatic brake control device, computer equipment and readable storage medium thereof |
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| CN113415264A (en) * | 2021-07-30 | 2021-09-21 | 中车长春轨道客车股份有限公司 | Rail vehicle braking system and monitoring method thereof |
| CN113490173A (en) * | 2021-06-30 | 2021-10-08 | 中车齐齐哈尔车辆有限公司 | Railway train braking test method and system |
| CN113511234A (en) * | 2021-05-28 | 2021-10-19 | 中车齐齐哈尔车辆有限公司 | Train network of railway wagon vehicle-mounted monitoring system |
| CN114132361A (en) * | 2021-12-06 | 2022-03-04 | 安徽达尔智能控制系统股份有限公司 | Urban intelligent traffic operation and maintenance optimization service diagnosis system and method |
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