A rail vehicle speed measurement platform and a rail vehicle

Abstract

The application provides a rail vehicle speed measurement platform, which comprises speed measurement modules arranged on each trailer and each motor car in the same formation of the rail vehicle and connected with a train Ethernet gateway respectively; the speed measurement module comprises a speed measurement unit and a speed measurement sensor; the train Ethernet gateway is connected with a TCMS and the speed measurement unit respectively; the speed measurement sensor is connected with the speed measurement unit; the train Ethernet gateways on each trailer and each motor car are connected with each other; the speed measurement sensor detects the speed of the rail vehicle in real time, the speed measurement unit receives signals sent by the speed measurement sensor and performs calculation and processing to obtain the speed of the rail vehicle. The rail vehicle speed measurement platform provided by the application avoids the defects of multiple types and quantities of speed sensors used in the rail vehicle and complex wiring of the bogie, and reduces the cost of later operation and maintenance.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of rail transit, in particular to a rail vehicle speed measurement platform and a rail vehicle. BACKGROUND

[0002] At present, speed sensors are respectively configured in traction systems, braking systems, signal systems and running parts of rail vehicles, resulting in a large number of types and quantities of speed sensors used in rail vehicles, complex wiring of bogies, and high maintenance costs in later operation. SUMMARY

[0003] To solve the above problems, the purpose of the embodiments of the present application is to provide a rail vehicle speed measurement platform and a rail vehicle.

[0004] In a first aspect, the embodiments of the present application provide a rail vehicle speed measurement platform arranged on a rail vehicle, comprising: speed measurement modules arranged on each trailer and each motor car in the same consist of the rail vehicle, respectively;

[0005] The speed measurement modules arranged on each trailer and each motor car in the same consist of the rail vehicle are respectively connected with a train Ethernet gateway, and are respectively connected with a train control and management system (TCMS) through the train Ethernet gateway;

[0006] The speed measurement module comprises: a speed measurement unit and a speed measurement sensor; the speed measurement sensor is connected with the speed measurement unit, and the speed measurement unit is connected with the train Ethernet gateway;

[0007] The speed measurement sensor detects the speed of the rail vehicle in real time, detects a speed signal of the rail vehicle, and sends the detected speed signal to the speed measurement unit;

[0008] The speed measurement unit is configured to receive and process the speed signal sent by the speed measurement sensor, to obtain the speed of the rail vehicle detected by the speed measurement sensor.

[0009] In a second aspect, the embodiments of the present application further provide a rail vehicle comprising the rail vehicle speed measurement platform of the first aspect.

[0010] In the solutions provided by the first aspect to the second aspect of the embodiment of the present application, the speed detection module of the track vehicle speed detection platform is arranged on each trailer and each motor car in the same consist of the track vehicle, the speed sensor arranged in the speed detection module is used to detect the speed of the track vehicle, and after the speed of the track vehicle is detected, the speed of the track vehicle detected by the speed sensor is fed back to the TCMS and other systems (including the traction system, the braking system, the signal system, and the running gear) in the track vehicle through the speed detection unit. Compared with the way that the speed sensors are respectively arranged in the traction system, the braking system, the signal system, and the running gear in the track vehicle in the related art, the speed of the track vehicle is detected by the track vehicle speed detection platform arranged uniformly in the track vehicle, and the detected speed is synchronously fed back to the TCMS and other systems in the track vehicle, so that the speed sensors do not need to be respectively arranged in the traction system, the braking system, the signal system, and the running gear and other systems of the track vehicle, the defects of the multiple types and quantities of speed sensors used in the track vehicle and the complex wiring of the bogie are avoided, and the cost of later operation and maintenance is reduced. Moreover, the speed is uniformly sent to each system in the track vehicle by the speed detection platform, so that the speed sources of each system in the track vehicle are consistent, and the defect of the reduced control performance of the track vehicle is avoided.

[0011] In order to make the above objectives, characteristics and advantages of the present application more apparent, clear and easy to understand, the following will specifically describe a preferred embodiment in combination with the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0012] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0013] Figure 1 A structure diagram of a track vehicle speed detection platform provided by the embodiment 1 of the present application is shown.

[0014] Figure legend: 100, speed detection platform; 101, speed detection module; 102, train control and management system TCMS; 103, train Ethernet gateway; 104, speed detection unit; 105, speed detection sensor. DETAILED DESCRIPTION

[0015] In the description of the present application, it needs to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0016] In addition, the terms "first", "second" are only for descriptive purpose, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise explicitly specified and limited.

[0017] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integral connection; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through intermediate medium, or internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0018] At present, speed sensors are respectively configured in the traction system, braking system, signal system, running gear and other systems in the rail vehicle, resulting in multiple types and quantities of speed sensors used in the rail vehicle, complex wiring of the bogie, high cost of later operation and maintenance; The configuration of speed sensors in the traction system, braking system, signal system, running gear and other systems in the rail vehicle also makes the speed sources of each system in the rail vehicle inconsistent, which will cause the defect of reducing the control performance of the rail vehicle.

[0019] The above-mentioned each system in the rail vehicle includes but is not limited to: TCMS, traction system, braking system, and running gear system.

[0020] Based on this, the following embodiments of the present application propose a rail vehicle speed measurement platform and a rail vehicle. By respectively arranging speed measurement modules constituting the rail vehicle speed measurement platform on each trailer and each motor car in the same consist of the rail vehicle, the speed of the rail vehicle is detected by using the speed measurement sensors arranged in the speed measurement modules, and after the speed of the rail vehicle is detected, the speed of the rail vehicle detected by the speed measurement sensors is fed back to the TCMS and other systems (other systems, including: traction system, braking system, signal system and running gear) in the rail vehicle by the speed measurement unit. The speed of the rail vehicle is detected by using the rail vehicle speed measurement platform uniformly arranged in the rail vehicle, and the detected speed is synchronously fed back to the TCMS and other systems in the rail vehicle. There is no need to respectively configure speed sensors in the traction system, braking system, signal system, running gear and other systems of the rail vehicle, avoiding the defects of multiple types and quantities of speed sensors used in the rail vehicle and complex wiring of bogies, and reducing the cost of later operation and maintenance.

[0021] In order to make the above-mentioned purposes, features and advantages of the present application more apparent and easy to understand, the present application will be further described in detail below with reference to the drawings and embodiments.

[0022] Embodiments

[0023] The rail vehicle speed measurement platform proposed in this embodiment is arranged on the rail vehicle.

[0024] Referring to Figure 1 The rail vehicle speed measurement platform 100 proposed in this embodiment includes speed measurement modules 101 arranged on each trailer and each motor car in the same consist of the rail vehicle respectively. The speed measurement modules 101 arranged on each trailer and each motor car in the same consist of the rail vehicle are connected with a train Ethernet gateway respectively, and are connected with the TCMS through the train Ethernet gateway 103 respectively. The speed measurement module 101 includes a train Ethernet gateway speed measurement unit 104 and a speed measurement sensor 105. The speed measurement sensor 105 of the train Ethernet gateway is connected with the speed measurement unit, and the speed measurement unit is connected with the train Ethernet gateway. The speed measurement sensor 105 detects the speed of the rail vehicle in real time, detects the speed signal of the rail vehicle, and sends the detected speed signal to the speed measurement unit. The speed measurement unit is used for receiving and processing the speed signal sent by the speed measurement sensor, and obtaining the speed of the rail vehicle detected by the speed measurement sensor.

[0025] The speed signal of the rail vehicle is a 24-volt square wave signal.

[0026] In this embodiment, the speed signal of the rail vehicle includes a trailer speed signal and a single axle speed signal of the rail vehicle.

[0027] As shown in Figure 1 , one consist of rail vehicles contains two trailers TMc at the head and tail and two motor cars MP1 and MP2 in the middle, i.e., a total of four vehicles in one consist; two trailers and two motor cars in the same consist are respectively provided with speed measurement modules 101. The speed measurement modules respectively provided in the two trailers and the two motor cars in the same consist are connected to the TCMS of the rail vehicle and other systems of the rail vehicle through hardwires and train Ethernet gateways.

[0028] The speed measurement platform 100 is configured to provide speed-related information for other systems on the rail vehicle except the speed measurement platform; the speed-related information includes but is not limited to speed information, acceleration, wheel diameter value, zero speed and overspeed.

[0029] The other systems on the rail vehicle include but are not limited to a traction system, a running gear system, a braking system, a speedometer and a signal system.

[0030] Here, the speed information has the same meaning as the speed of the rail vehicle described above.

[0031] The speed of the rail vehicle includes but is not limited to train level speed and rail vehicle single axle speed.

[0032] The train level speed and the rail vehicle single axle speed respectively include speed value size and direction.

[0033] The train level speed is used to represent a parameter obtained by the rail vehicle speed measurement platform and capable of representing the current driving speed of the rail vehicle.

[0034] In this embodiment, the process of how the speed of the rail vehicle is detected is mainly described.

[0035] The TCMS 102 is configured to be responsible for processing and distributing various internal and external data of the train operation; in the rail vehicle speed measurement platform proposed in this embodiment, the train control and management system TCMS is connected with the train Ethernet gateway in the speed measurement module on each trailer and motor car in the same consist.

[0036] In one embodiment, the train Ethernet gateway can adopt but is not limited to a Time Sensitive Network (TSN) gateway and an Ethernet Consist Network (ECN).

[0037] The train Ethernet gateway on each motor car and each trailer is further connected with the traction system, the braking system and the running gear system respectively provided on each motor car and each trailer.

[0038] In one embodiment, the speed measurement unit 104 supports 8-channel signal input, providing a speed interface for the traction system, braking system and other systems on the rail vehicle through the network bus.

[0039] The speed measurement sensors 105 on each motor car and each axle of the motor car are 2-channel current type speed sensors; in one embodiment, one speed measurement sensor is configured on each axle of each motor car; wherein the speed measurement sensors 105 are connected to the speed measurement unit 104 through hardwires.

[0040] In order to be able to continuously feed back the train-level speed to other systems of the rail vehicle at intervals of tens of milliseconds, the speed measurement unit can be designed in a two-by-two voting architecture, composed of two SIL4-level signal processing boards, with two CPUs on each board to meet the 2-out-of-2 requirement, and the two signal processing boards forming a master-slave system.

[0041] As shown in Figure 1 The speed measurement sensors connect the speed signals to the speed measurement unit 104 through hardwires, and the speed measurement unit 104 sends the speed signals to the signal system, traction system and braking system on the trailer or motor car where the speed measurement unit is located through the train Ethernet gateway 103, realizing the synchronization of speed information between various systems in the same consist and maintaining the consistency of the speed source.

[0042] The above time intervals include a first time interval and a second time interval; wherein the duration of the first time interval is greater than the duration of the second time interval.

[0043] In one embodiment, the duration of the first time interval is 50 milliseconds, indicating that the duration from the last detection of vehicle speed is 50 milliseconds; the duration of the second time interval is 30 milliseconds, indicating that the duration from the last detection of vehicle speed is 30 milliseconds.

[0044] Of course, the first time interval and the second time interval can also be set to other time lengths within 1 second according to requirements, which will not be described one by one here.

[0045] When the speed measurement unit is arranged on a trailer, the speed measurement unit is used to receive and process the speed signals sent by the speed measurement sensors to obtain the vehicle speed of the rail vehicle detected by the speed measurement sensors, specifically including the following steps (1) to (4):

[0046] (1) When the duration from the last feedback of train-level speed to the TCMS reaches the preset first time interval, the trailer speed signal detected by the connected speed measurement sensors on the trailer where the speed measurement unit is located is received, and the first trailer speed of the trailer where the speed measurement unit is located is obtained by processing the trailer speed signal;

[0047] (2) Obtain the speed of the second trailer measured by the speed measuring unit on another trailer in the same group as the speed measuring unit;

[0048] (3) The train speed is calculated based on the speed of the first trailer and the speed of the second trailer;

[0049] (4) Feed back the calculated train-level speed to TCMS.

[0050] In step (1) above, in order to process the trailer speed signal to obtain the first trailer speed of the trailer where the speed measuring unit is located, the speed measuring unit can perform the following steps (11) to (12):

[0051] (11) Extract the frequency of the trailer speed signal from the trailer speed signal;

[0052] (12) From the correspondence between vehicle speed and vehicle speed signal frequency, find the vehicle speed corresponding to the extracted trailer speed signal, and determine the found vehicle speed as the first trailer speed of the trailer where the speed measuring unit is located.

[0053] In step (11) above, the specific process of extracting the frequency of the trailer speed signal from the trailer speed signal is existing technology and will not be described in detail here.

[0054] In step (12) above, the correspondence between vehicle speed and vehicle speed signal frequency is pre-cached in the speed measuring unit. In step (2) above, a speed acquisition command can be sent to the speed measuring unit in another trailer in the vehicle group where the trailer is located, and the second trailer speed fed back by the speed measuring unit in that other trailer can be received.

[0055] The speed measuring unit in another trailer in the same vehicle group as the aforementioned speed measuring unit will, upon receiving a speed acquisition command, feed back the measured speed of the second trailer to the aforementioned speed measuring unit.

[0056] In step (3) above, the train speed is obtained by calculating the average of the first trailer speed and the second trailer speed.

[0057] Furthermore, when the speed measuring unit is installed on the trailer, the speed measuring unit is used to receive and process the speed signal emitted by the speed sensor to obtain the vehicle speed of the rail vehicle detected by the speed sensor, specifically in the following steps (1) to (4):

[0058] (1) when the second trailer speed cannot be obtained and the time interval from the last feedback of the train level speed to the TCMS reaches a preset first time interval, receiving a trailer speed signal detected by a speed sensor connected to the speed detection unit on the trailer, and processing the trailer speed signal to obtain a first trailer speed of the trailer where the speed detection unit is located;

[0059] (2) feeding back the detected first trailer speed to the TCMS as the train level speed.

[0060] (3) when the first trailer speed and the second trailer speed cannot be obtained and the time interval from the last feedback of the train level speed to the TCMS reaches a preset first time interval, receiving a track vehicle single axle speed signal of each axle of the trailer where the speed detection unit is located, detected by a speed sensor connected to the speed detection unit, and processing the track vehicle single axle speed signal to obtain a track vehicle single axle speed of the trailer where the speed detection unit is located.

[0061] (4) feeding back the detected track vehicle single axle speed to the TCMS as the train level speed.

[0062] In the above step (3), the speed sensor installed on the trailer is a trailer axle speed sensor, which can detect the speed of each axle of the trailer to obtain a track vehicle single axle speed signal of each axle.

[0063] The specific process of processing the track vehicle single axle speed signal of each axle to obtain the track vehicle single axle speed of the trailer where the speed detection unit is located is similar to the process of processing the trailer speed signal to obtain the first trailer speed of the trailer where the speed detection unit is located described in the above steps (11) to (12), which will not be repeated here.

[0064] Optionally, when the speed detection unit is arranged on the motor car, the speed detection unit is configured to receive and process the speed signal emitted by the speed sensor to obtain the speed of the track vehicle detected by the speed sensor, and specifically includes the following steps (1) and (2):

[0065] (1) when the time interval from the last feedback of the train level speed and the track vehicle single axle speed of the motor car to the TCMS reaches a preset second time interval, receiving a motor car speed signal detected by a speed sensor connected to the speed detection unit on the motor car and a track vehicle single axle speed signal detected by the speed sensor on each axle of the motor car, and processing the motor car speed signal and the track vehicle single axle speed signal respectively to obtain the motor car speed and the track vehicle single axle speed of the motor car where the speed detection unit is located;

[0066] (2) feeding back the detected motor car speed and track vehicle single axle speed to the TCMS.

[0067] In the step (1) above, the specific process of processing the motor car speed signal and the rail vehicle single axle speed signal to obtain the motor car speed of the motor car where the speed measuring unit is located and the rail vehicle single axle speed is similar to the process of processing the trailer speed signal to obtain the first trailer speed of the trailer where the speed measuring unit is located described in the steps (11) to (12) above, and thus will not be repeated here.

[0068] Processing the motor car speed signal and the rail vehicle single axle speed signal to obtain the motor car speed of the motor car where the speed measuring unit is located and the rail vehicle single axle speed is to process the motor car speed signal to obtain the motor car speed of the motor car where the speed measuring unit is located and process the rail vehicle single axle speed signal to obtain the rail vehicle single axle speed of the motor car where the speed measuring unit is located.

[0069] The speed measuring sensor installed on the motor car is a motor axle speed sensor, which can detect the speed of each axle of the motor car to obtain the rail vehicle single axle speed signal of each axle.

[0070] In one embodiment, in order to determine the train level speed of the rail vehicle, the TCMS 102 is specifically configured to perform the following steps (1) to (4):

[0071] (1) When the rail vehicle is in the traction state, and the multiple rail vehicle single axle speeds fed back by the speed measuring units in the speed measuring modules arranged on each trailer and each motor car in the same consist are obtained, and the train level speeds fed back by each trailer are all less than the first preset vehicle speed or all greater than the second preset vehicle speed, sorting the obtained multiple rail vehicle single axle speeds, and determining the second largest rail vehicle single axle speed and the second smallest rail vehicle single axle speed in the multiple rail vehicle single axle speeds;

[0072] (2) calculating the average of the axle speeds of the second largest rail vehicle single axle speed and the second smallest rail vehicle single axle speed, and determining the calculated axle speed average as the train level speed;

[0073] (3) When the rail vehicle is in the braking state, and the multiple rail vehicle single axle speeds fed back by the speed measuring units in the speed measuring modules arranged on each trailer and each motor car in the same consist are obtained, and the train level speeds fed back by each trailer are all less than the first preset vehicle speed or all greater than the second preset vehicle speed, sorting the obtained multiple rail vehicle single axle speeds, and determining the second largest rail vehicle single axle speed in the multiple rail vehicle single axle speeds;

[0074] (4) determining the second largest rail vehicle single axle speed in the multiple rail vehicle single axle speeds as the train level speed.

[0075] In the step (1), the multiple single-axle speeds of the rail vehicle obtained are sorted, and the second largest single-axle speed and the second smallest single-axle speed of the multiple single-axle speeds of the rail vehicle are determined as follows: the TCMS obtains the single-axle speeds a, b, c and d of the rail vehicle fed back by the speed measuring units in the speed measuring modules arranged on the trailers and motor cars in the same consist; the multiple single-axle speeds of the rail vehicle are sorted in the order from small to large, and the sorted order of the multiple single-axle speeds of the rail vehicle is: the single-axle speed b, the single-axle speed c, the single-axle speed a, and the single-axle speed d. It can be known from the sorting result that the single-axle speed a is the second largest single-axle speed, and the single-axle speed c is the second smallest single-axle speed.

[0076] In an embodiment, the first preset vehicle speed can be set as 2 km / h, and the second preset vehicle speed can be set as 450 km / h.

[0077] Of course, the first preset vehicle speed and the second preset vehicle speed can be set as other speed values according to actual conditions, which will not be described here.

[0078] In the step (3), the multiple single-axle speeds of the rail vehicle obtained are sorted, and the second largest single-axle speed of the multiple single-axle speeds of the rail vehicle is determined, and the specific process is similar to the process described in the step (1), which will not be described here.

[0079] In the rail vehicle speed measuring platform proposed in the embodiment, the train Ethernet gateway is also connected with the traction system, the braking system, and the running gear system in the rail vehicle.

[0080] When the speed measuring unit is arranged on the trailer, the speed measuring unit is further specifically used for:

[0081] When the detected train level speed is less than the first vehicle speed threshold, zero speed information is fed back to the TCMS, the traction system, the braking system, and the running gear system.

[0082] When the speed measuring unit is arranged on the motor car, the speed measuring unit is further specifically used for:

[0083] When the detected motor car speed is less than the first vehicle speed threshold, zero speed information is fed back to the TCMS, the traction system, the braking system, and the running gear system. In an embodiment, the first vehicle speed threshold can be 0.5 km / h.

[0084] Of course, the first vehicle speed threshold can also be set to be any speed between 0 and 1 km / h, which will not be repeated here.

[0085] After the TCMS, the traction system, the braking system, and the bogie system respectively receive the zero speed information, it is determined that the rail vehicle is in the stationary state.

[0086] And in the stationary state, when the train level speed received by the TCMS is greater than the third vehicle speed threshold, the TCMS determines that the rail vehicle is converted from the stationary state to the starting state.

[0087] In one embodiment, the third vehicle speed threshold can be 3 km / h.

[0088] Of course, the third vehicle speed threshold can also be set to be any speed between 2 km / h and 5 km / h, which will not be repeated here. When the speed measuring unit is arranged on the trailer, the speed measuring unit is also specifically used for:

[0089] When the detected train level speed is greater than the second vehicle speed threshold, the overspeed information is fed back to the TCMS, the traction system, the braking system, and the bogie system.

[0090] In one embodiment, the second vehicle speed threshold can be 420 km / h. Of course, the second vehicle speed threshold can also be set to be any speed between 410 km / h and 450 km / h, which will not be repeated here.

[0091] After the TCMS, the traction system, the braking system, and the bogie system respectively receive the overspeed information, it is determined that the rail vehicle is in the overspeed state.

[0092] In order to ensure the synchronization of speed information between systems in each vehicle in the same formation (i.e. motor cars and trailers in the same formation) and the consistency of speed sources, the speed measuring unit 104 is specifically used for: while feeding back the train level speed or the single axle speed of the rail vehicle to the TCMS 102, feeding back the train level speed or the single axle speed of the rail vehicle to the traction system, the braking system, and the bogie system in the rail vehicle respectively.

[0093] The embodiment also proposes a rail vehicle comprising the above-mentioned rail vehicle speed measuring platform.

[0094] To sum up, the embodiment provides a rail vehicle speed measurement platform and a rail vehicle. The speed measurement module of the rail vehicle speed measurement platform is arranged on each trailer and each motor car in the same consist of the rail vehicle. The speed sensor arranged in the speed measurement module is used to detect the speed of the rail vehicle. After the speed of the rail vehicle is detected, the speed of the rail vehicle detected by the speed sensor is fed back to the TCMS and other systems (including the traction system, the braking system, the signal system, and the running gear) in the rail vehicle through the speed measurement unit. Compared with the way that the speed sensors are respectively arranged in the traction system, the braking system, the signal system, and the running gear in the related art, the speed of the rail vehicle is detected by the rail vehicle speed measurement platform arranged in the rail vehicle, and the detected speed is fed back to the TCMS and other systems in the rail vehicle synchronously. The speed sensors do not need to be respectively arranged in the traction system, the braking system, the signal system, and the running gear and other systems in the rail vehicle. The defects of the rail vehicle, such as the multiple types and quantities of speed sensors and the complex wiring of the bogie, are avoided, and the cost of later operation and maintenance is reduced. Moreover, the speed is sent to each system in the rail vehicle by the speed measurement platform, the speed sources of each system in the rail vehicle are consistent, and the defect of the reduced control performance of the rail vehicle is avoided.

[0095] The above merely describes a specific implementation of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A speed measuring platform for rail vehicles, installed on rail vehicles, characterized in that, The rail vehicle speed measurement platform includes: speed measurement modules installed on each trailer and each motor car in the same rail vehicle train; The speed measuring modules installed on each trailer car and each motor car in the same trainset are respectively connected to the train Ethernet gateway, and are respectively connected to the TCMS through the train Ethernet gateway. The speed measurement module includes: a speed measurement unit and a speed measurement sensor; the speed measurement sensor is connected to the speed measurement unit, and the speed measurement unit is connected to the train Ethernet gateway; The speed sensor detects the speed of the rail vehicle in real time, detects the speed signal of the rail vehicle, and sends the detected speed signal to the speed measuring unit; the speed signal includes: trailer speed signal; The speed measuring unit is used to receive and process the trailer speed signal emitted by the speed measuring sensor to obtain the vehicle speed of the rail vehicle detected by the speed measuring sensor; wherein, the vehicle speed of the rail vehicle includes: train-level speed. The TCMS is specifically used for: When the rail vehicle is in traction, when multiple rail vehicle single-axle speeds are obtained from the speed measuring units in the speed measuring modules installed on each trailer and each motor car in the same train group, and the train-level speeds fed back by each trailer are all less than the first preset speed or all greater than the second preset speed, the multiple rail vehicle single-axle speeds are sorted to determine the second largest rail vehicle single-axle speed and the second smallest rail vehicle single-axle speed among the multiple rail vehicle single-axle speeds. Calculate the average axle speed of the second largest and the second smallest rail vehicle single axle speeds, and determine the calculated average axle speed as the train-level speed.

2. The rail vehicle speed measuring platform according to claim 1, characterized in that, When the time interval includes a first time interval and a second time interval, and the speed measuring unit is installed on the trailer, the speed measuring unit is used to receive and process the speed signal emitted by the speed sensor to obtain the vehicle speed of the rail vehicle detected by the speed sensor, including: When the time elapsed since the last feedback of train speed to TCMS reaches a preset first time interval, the trailer speed signal obtained by the connected speed sensor detecting the speed of the trailer where the speed measuring unit is located is received, and the trailer speed signal is processed to obtain the first trailer speed of the trailer where the speed measuring unit is located. Obtain the speed of the second trailer from the speed measuring unit on another trailer within the same trailer group as the speed measuring unit. The train-level speed is calculated based on the speeds of the first and second trailers. The calculated train-level speed is fed back to TCMS.

3. The rail vehicle speed measuring platform according to claim 2, characterized in that, The speed measuring unit is used to process the trailer speed signal to obtain the first trailer speed of the trailer where the speed measuring unit is located, including: Extract the frequency of the trailer speed signal from the trailer speed signal; From the correspondence between vehicle speed and vehicle speed signal frequency, the vehicle speed corresponding to the extracted trailer speed signal is retrieved, and the retrieved vehicle speed is determined as the first trailer speed of the trailer where the speed measuring unit is located.

4. The rail vehicle speed measuring platform according to claim 2, characterized in that, When the speed measuring unit is installed on the trailer, the speed measuring unit is used to receive and process the speed signal emitted by the speed sensor to obtain the vehicle speed of the rail vehicle detected by the speed sensor, and further includes: When the second trailer speed cannot be obtained and the time elapsed since the last feedback of train-level speed to TCMS reaches a preset first time interval, the trailer speed signal obtained by the connected speed sensor detecting the speed of the trailer where the speed measuring unit is located is received, and the trailer speed signal is processed to obtain the first trailer speed of the trailer where the speed measuring unit is located. The detected speed of the first trailer is fed back to the TCMS as the train-level speed; When the speeds of the first trailer and the second trailer cannot be obtained and the time elapsed since the last feedback of the train-level speed to the TCMS reaches a preset first time interval, the unit receives the single-axle speed signals of each axle of the trailer where the speed measuring unit is located by the connected speed measuring sensor to detect the speed of each axle, and processes the single-axle speed signals of each axle to obtain the single-axle speed of the trailer where the speed measuring unit is located. The detected single-axle speed of the rail vehicle is fed back to the TCMS as the train-level speed.

5. The rail vehicle speed measuring platform according to claim 4, characterized in that, When the speed measuring unit is installed on the train, the speed measuring unit is used to receive and process the speed signal emitted by the speed sensor to obtain the vehicle speed detected by the speed sensor, including: When the time elapsed since the last feedback of the train speed and the single axle speed of the EMU to the TCMS reaches a preset second time interval, the unit receives the EMU speed signal obtained by the connected speed measuring sensor from detecting the speed of the EMU where the speed measuring unit is located, and the single axle speed signal of the rail vehicle obtained by detecting the speed of each axle of the EMU. The unit processes the EMU speed signal and the single axle speed signal of the rail vehicle respectively to obtain the EMU speed and the single axle speed of the rail vehicle where the speed measuring unit is located. The detected train speed and single-axle speed of the rail vehicle are fed back to TCMS.

6. The rail vehicle speed measuring platform according to claim 5, characterized in that, The TCMS is also specifically used for: When the rail vehicle is in a braking state, when multiple rail vehicle single-axle speeds are obtained from the speed measuring units in the speed measuring modules installed on each trailer and each motor car in the same train group, and the train-level speeds fed back by each trailer are all less than the first preset speed or all greater than the second preset speed, the multiple rail vehicle single-axle speeds are sorted to determine the second largest rail vehicle single-axle speed among the multiple rail vehicle single-axle speeds. The second largest single-axle speed among multiple rail vehicle single-axle speeds is determined as the train-class speed.

7. The rail vehicle speed measuring platform according to claim 5, characterized in that, The train Ethernet gateway is also connected to the traction system, braking system, and running gear system in the rail vehicle. When the speed measuring unit is mounted on the trailer, the speed measuring unit is further specifically used for: When the detected train speed is less than the first speed threshold, zero speed information is fed back to the TCMS, traction system, braking system, and running gear system. When the speed measuring unit is installed on the high-speed train, the speed measuring unit is also specifically used for: When the detected train speed is less than the first speed threshold, zero-speed information is fed back to the TCMS, traction system, braking system, and running gear system.

8. The rail vehicle speed measuring platform according to claim 7, characterized in that, When the speed measuring unit is mounted on the trailer, the speed measuring unit is further specifically used for: When the detected train speed exceeds the second speed threshold, overspeed information is fed back to the TCMS, traction system, braking system, and running gear system.

9. The rail vehicle speed measuring platform according to claim 7, characterized in that, The speed measuring unit is also specifically used for: While feeding back the train speed or the single-axle speed of the rail vehicle to the TCMS, the train speed or the single-axle speed of the rail vehicle is also fed back to the traction system, braking system and running gear system of the rail vehicle.

10. A rail vehicle, characterized in that, The rail vehicle speed measuring platform includes any one of claims 1-9 above.

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