Railway vehicle distributed wireless intelligent cable checking system

Abstract

The invention provides a distributed wireless intelligent cable checking system for a railway vehicle, and belongs to the technical field of railway vehicles. The distributed wireless intelligent cable checking system for the railway vehicle comprises a cable checking host. The line checking host comprises a computer, the computer comprises a line checking master control node, the line checking master control node comprises a plurality of wireless line checking nodes, and each line checking node is installed on the opposite face position of the railway vehicle; each wireless cable checking node comprises a wireless communication module, a data processing module and a cable checking sensor. Through cooperative work of a plurality of wireless cable checking nodes, the system can realize real-time cable checking of the railway vehicle, and the safety and efficiency of vehicle operation are improved. Meanwhile, the system adopts a wireless communication technology, realizes real-time data exchange and line checking between railway vehicles, has the advantages of simple wiring, convenient maintenance, strong anti-interference capability and the like, avoids the defects of a traditional wired connection mode, reduces the complexity of wiring and maintenance, and improves the reliability and stability of the system.

Description

Technical Field

[0001] The present application relates to the field of rail vehicles, and in particular to a distributed wireless intelligent alignment system for rail vehicles. Background Art

[0002] In accordance with the requirements of standards such as GB / T14894-2005 "Inspection and Testing Rules for Urban Rail Transit Vehicles after Assembly" and IEC_61133-2006 "Vehicle Test Specifications before Assembly and Operation", a line test is required after the braking system is installed on the vehicle. By collecting parameters such as control commands, brake cylinder pressure, brake shoe / brake pad braking force, electric brake force, acceleration, vehicle speed and thermal capacity during driving, the operating performance of the vehicle braking system is evaluated. This involves joint testing of the vehicle, traction system and network system.

[0003] With the rapid development of rail transit, the operational safety and efficiency of rail vehicles are receiving increasing attention. Traditional rail vehicle alignment systems mostly use wired connections, which present problems such as complex wiring and difficult maintenance. Furthermore, due to the particularity of the rail vehicle operating environment, wired connections are susceptible to external interference, resulting in inaccurate alignment and affecting the safety and efficiency of vehicle operation. The safety and stability of rail vehicles are receiving increasing attention. Cables in rail vehicles are an important part of connecting various devices and systems, and their integrity is directly related to the normal operation of the vehicle. However, traditional cable inspection methods mostly rely on manual labor, which is inefficient and prone to errors. Therefore, it is particularly important to develop an efficient and accurate distributed wireless intelligent alignment system for rail vehicles. Summary of the Invention

[0004] In order to make up for the above shortcomings, the present application provides a distributed wireless intelligent alignment system for rail vehicles, which aims to improve the problems raised in the above background technology.

[0005] An embodiment of the present application provides a distributed wireless intelligent alignment system for rail vehicles, including a alignment host.

[0006] A calibration host computer, the calibration host computer includes a computer, the computer includes a calibration master control node, the calibration master control node includes a plurality of wireless calibration nodes, wherein each calibration node is installed at an opposite position of the rail vehicle;

[0007] Each wireless calibration node includes a wireless communication module, a data processing module and a calibration sensor. The wireless communication module is used to realize wireless communication and data exchange between each wireless calibration node. The data processing module is used to receive and process data from other wireless calibration nodes, and use calibration calculations, and transmit the calculation results to the corresponding wireless calibration node. The calibration sensor is used to detect the position and posture information of the rail vehicle and transmit the information to the data processing module.

[0008] In a specific implementation scheme, the data processing module includes a presentation layer, a logic analysis layer and a data service layer, wherein the presentation layer includes a user interaction interface between the user displayed on the computer and the test system, and is responsible for real-time monitoring of test configuration and test analysis data; the logic analysis layer is used to automatically process and analyze test data through calibration sensors, and pass the analysis results to the presentation layer; the data service layer is used to provide resource access support to the logic analysis layer through the database management system, and receive operation requirements for test data in the database issued by the logic analysis layer.

[0009] In a specific implementation scheme, further, the logic analysis layer can realize automatic processing and analysis of test data, including data filtering, numerical calculation, performance modeling and performance determination, and pass the analysis results to the presentation layer.

[0010] In a specific implementation scheme, based on the characteristics of rail vehicle signals, the alignment calculation method adopts Butterworth filtering to perform calculations. Butterworth filtering performs low-pass filtering on the collected data, and the filtering parameters are set. The braking response time, corrected braking distance, average braking deceleration, longitudinal impact rate, and thermal capacity items are automatically calculated for the filtered data. Finally, according to the established braking system performance model, all valid test and analysis data are statistically analyzed to determine the braking system performance and predict the risk of system failure.

[0011] In a specific implementation scheme, the logic analysis layer determines the braking system performance by performing braking distance correction, longitudinal impact rate calculation, and electric-air conversion smoothness evaluation based on the test data through a braking system performance model.

[0012] In a specific embodiment, the alignment sensor includes a cable terminal and a cable terminal connector, and both the cable terminal and the cable terminal connector are installed on the cable bundle to be tested.

[0013] In a specific implementation scheme, the calibration host also includes an intelligent gateway and a database, and the intelligent gateway and the database transmit wirelessly to each other, wherein the intelligent gateway is used to receive the data calculation results sent by the data processing module and send the data calculation structure to the database.

[0014] In a specific implementation scheme, the intelligent gateway includes a hard-wired instruction intelligent detection terminal, an air circuit pressure intelligent detection terminal, a braking force intelligent detection terminal, an acceleration intelligent detection terminal, a radar intelligent detection terminal, a braking system maintenance terminal, a thermocouple intelligent detection terminal, and a GPS intelligent detection terminal. After the intelligent detection terminal collects the control instructions, it sends them to the intelligent gateway through a wireless WIFI module.

[0015] In a specific implementation scheme, the hard-wire instruction intelligent detection terminal includes an embedded digital acquisition and transmission module; the air circuit pressure intelligent detection terminal collects the brake cylinder pressure and sends it to the wireless intelligent gateway through the wireless WIFI module. The air circuit pressure intelligent detection terminal includes a pressure sensor module and an embedded analog acquisition and transmission module; the braking force intelligent detection terminal collects the brake shoe / brake pad braking force and sends it to the wireless intelligent gateway through the wireless WIFI module. The braking force intelligent detection terminal includes a braking force sensor and an embedded analog acquisition and transmission module; the acceleration intelligent detection terminal collects the acceleration of the motor vehicle and trailer and sends it to the wireless intelligent gateway through the wireless WIFI module. The acceleration intelligent detection terminal includes an acceleration sensor and an embedded analog acquisition and transmission module; the radar intelligent detection terminal collects the train speed and running distance and sends it to the wireless intelligent gateway through the wireless WIFI module. The radar intelligent detection terminal includes a Doppler radar and an embedded acquisition and transmission module.

[0016] In a specific implementation scheme, the wireless terminal of the braking system maintenance terminal collects all data from the internal communication bus of the braking system, and then sends it to the wireless intelligent gateway through the wireless WI FI module after protocol conversion. The wireless terminal of the braking system maintenance terminal includes an embedded communication device; the thermocouple intelligent detection terminal collects the brake shoe / brake pad temperature and sends it to the wireless intelligent gateway through the wireless WI FI module. The thermocouple intelligent detection terminal includes a thermocouple and an embedded analog quantity acquisition and transmission module; the GPS intelligent detection terminal collects the train position and sends it to the wireless intelligent gateway through the wireless WI FI module. The GPS intelligent detection terminal includes a GPS module and an embedded communication module.

[0017] Beneficial Effects: This application provides a distributed wireless intelligent alignment system for rail vehicles. Through the collaborative operation of multiple wireless alignment nodes, the system can achieve real-time alignment of rail vehicles, improving the safety and efficiency of vehicle operation. At the same time, the system uses wireless communication technology to achieve real-time data exchange and alignment between rail vehicles. It has the advantages of simple wiring, convenient maintenance, and strong anti-interference capabilities. It avoids the shortcomings of traditional wired connection methods, reduces the complexity of wiring and maintenance, and improves the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the implementation methods of the present application, the following is a brief introduction to the drawings required for use in the implementation methods. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is a distribution diagram of a distributed wireless intelligent alignment system for rail vehicles provided by an embodiment of the present application;

[0020] Figure 2 A structural block diagram of a distributed wireless intelligent alignment system for rail vehicles provided in an embodiment of the present application;

[0021] Figure 3 A block diagram of the node structure of the calibration main control cabinet provided for the implementation of this application;

[0022] Figure 4 A block diagram of the wireless calibration node structure provided in the embodiment of this application;

[0023] Figure 5 A structural block diagram of the data processing module provided in the embodiment of this application;

[0024] Figure 6 This is a structural block diagram of the alignment sensor provided in the embodiment of the present application;

[0025] Figure 7 This is a structural block diagram of the smart curved gateway provided in the implementation scheme of this application. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application.

[0027] See also Figure 1-Figure 7 The present application provides a distributed wireless intelligent line calibration system for rail vehicles, including a line calibration host.

[0028] See also Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 and Figure 7The calibration host includes a computer, which includes a calibration master node. The calibration master node includes multiple wireless calibration nodes, each of which is installed on the opposite surface of the rail vehicle; each wireless calibration node includes a wireless communication module, a data processing module and a calibration sensor, wherein the wireless communication module is used to realize wireless communication and data exchange between each wireless calibration node, the data processing module is used to receive and process data from other wireless calibration nodes, and use calibration calculations, and transmit the calculation results to the corresponding wireless calibration node, and the calibration sensor is used to detect the position and posture information of the rail vehicle and transmit the information to the data processing module. Among them, it is first necessary to install wireless calibration nodes at the corresponding positions of the rail vehicle. Each wireless calibration node connects and exchanges data with other wireless calibration nodes through the wireless communication module. When the rail vehicle is running, each wireless calibration node detects the position and posture information of the vehicle through the calibration sensor and transmits the information to the data processing module. After receiving the data from other wireless calibration nodes, the data processing module performs calibration calculations and transmits the results to the corresponding wireless calibration node. The wireless calibration node makes corresponding adjustments based on the received calibration results to ensure the safety and efficiency of the rail vehicle operation. Through the collaborative operation of multiple wireless alignment nodes, the system can achieve real-time alignment of rail vehicles, improving the safety and efficiency of vehicle operation. Furthermore, the system uses wireless communication technology to achieve real-time data exchange and alignment between rail vehicles. This system offers advantages such as simple wiring, easy maintenance, and strong anti-interference capabilities. It avoids the shortcomings of traditional wired connections, reduces wiring and maintenance complexity, and improves system reliability and stability.

[0029] In this embodiment, the data processing module includes a presentation layer, a logic analysis layer, and a data service layer. The presentation layer includes a user interface between the user and the test system displayed on a computer and is responsible for test configuration and real-time monitoring of test analysis data. The logic analysis layer is used to automatically process and analyze test data using alignment sensors and transmit the analysis results to the presentation layer. The data service layer is used to provide resource access support to the logic analysis layer through a database management system and receive operational requirements for test data in the database issued by the logic analysis layer. Furthermore, the logic analysis layer can automatically process and analyze test data, including data filtering, numerical calculation, performance modeling, and performance determination, and transmit the analysis results to the presentation layer. Based on the characteristics of rail vehicle signals, the alignment calculation method uses a Butterworth filter. The Butterworth filter performs a low-pass filter on the collected data, and the filter parameters are set according to the specified parameters. The filtered data is automatically calculated for the braking response time, corrected braking distance, average braking deceleration, longitudinal impact rate, and thermal capacity items. Finally, based on the established braking system performance model, all valid test analysis data is statistically analyzed to determine the braking system performance and predict the risk of system failure. The logic analysis layer determines the braking system performance by performing braking distance correction, longitudinal impact rate calculation, and electric-air conversion smoothness evaluation based on the test data through the braking system performance model.

[0030] In this embodiment, the line calibration sensor includes a cable wiring terminal and a cable terminal connector, and both the cable wiring terminal and the cable terminal connector are installed on the cable bundle to be tested.

[0031] In specific configurations, the calibration host also includes an intelligent gateway and a database, which transmit data wirelessly to each other. The intelligent gateway is used to receive the data calculation results sent by the data processing module and send the data calculation structure to the database. The intelligent gateway includes a hard-wired instruction intelligent detection terminal, an air pressure intelligent detection terminal, a braking force intelligent detection terminal, an acceleration intelligent detection terminal, a radar intelligent detection terminal, a brake system maintenance terminal, a thermocouple intelligent detection terminal, and a GPS intelligent detection terminal. After the intelligent detection terminal collects control instructions, it sends them to the intelligent gateway via a wireless WiFi module. The hard-wire command intelligent detection terminal includes an embedded digital acquisition and transmission module; the air circuit pressure intelligent detection terminal collects the brake cylinder pressure and sends it to the wireless intelligent gateway through the wireless WI FI module. The air circuit pressure intelligent detection terminal includes a pressure sensor module and an embedded analog acquisition and transmission module; the braking force intelligent detection terminal collects the brake shoe / brake pad braking force and sends it to the wireless intelligent gateway through the wireless WI FI module. The braking force intelligent detection terminal includes a braking force sensor and an embedded analog acquisition and transmission module; the acceleration intelligent detection terminal collects the acceleration of the motor vehicle and trailer and sends it to the wireless intelligent gateway through the wireless WI FI module. The acceleration intelligent detection terminal includes an acceleration sensor and an embedded analog acquisition and transmission module; the radar intelligent detection terminal collects the train speed and running distance and sends it to the wireless intelligent gateway through the wireless WI FI module. The radar intelligent detection terminal includes a Doppler radar and an embedded acquisition and transmission module. The wireless terminal of the brake system maintenance terminal collects all data from the internal communication bus of the brake system, and sends it to the wireless intelligent gateway through the wireless WI FI module after protocol conversion. The wireless terminal of the brake system maintenance terminal includes an embedded communication device; the thermocouple intelligent detection terminal collects the brake shoe / brake pad temperature and sends it to the wireless intelligent gateway through the wireless WI FI module. The thermocouple intelligent detection terminal includes a thermocouple and an embedded analog quantity acquisition and transmission module; the GPS intelligent detection terminal collects the train position and sends it to the wireless intelligent gateway through the wireless WI FI module. The GPS intelligent detection terminal includes a GPS module and an embedded communication module.

[0032] The working principle of the rail vehicle distributed wireless intelligent alignment system:

[0033] First, wireless calibration nodes need to be installed at the corresponding positions of the rail vehicle. Each wireless calibration node connects and exchanges data with other wireless calibration nodes through a wireless communication module. When the rail vehicle is running, each wireless calibration node detects the vehicle's position and posture information through a calibration sensor and transmits the information to the data processing module. After receiving the data from other wireless calibration nodes, the data processing module performs calibration calculations and transmits the results to the corresponding wireless calibration node. The wireless calibration node makes corresponding adjustments based on the received calibration results to ensure the safety and efficiency of the rail vehicle's operation. Through the collaborative work of multiple wireless calibration nodes, the system can realize real-time calibration of rail vehicles and improve the safety and efficiency of vehicle operation. At the same time, the system uses wireless communication technology to realize real-time data exchange and calibration between rail vehicles. It has the advantages of simple wiring, easy maintenance, and strong anti-interference ability. It avoids the shortcomings of traditional wired connection methods, reduces the complexity of wiring and maintenance, and improves the reliability and stability of the system.

[0034] The foregoing is merely an embodiment of the present application and is not intended to limit the scope of protection of the present application. Various modifications and variations are possible for those skilled in the art. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present application shall be included within the scope of protection of the present application. It should be noted that similar reference numerals and letters represent similar items in the following figures. Therefore, once an item is defined in one figure, it does not need to be further defined or explained in subsequent figures.

Claims

1. A distributed wireless intelligent alignment system for rail vehicles, characterized in that: include A calibration host, the calibration host includes a computer, the computer includes a calibration master control node, the calibration master control node includes a plurality of wireless calibration nodes, wherein each calibration node is installed at an opposite surface position of the rail vehicle; Each wireless calibration node includes a wireless communication module, a data processing module and a calibration sensor, wherein the wireless communication module is used to realize wireless communication and data exchange between each wireless calibration node, the data processing module is used to receive and process data from other wireless calibration nodes, and use calibration calculations, and transmit the calculation results to the corresponding wireless calibration nodes, and the calibration sensor is used to detect the position and posture information of the rail vehicle, and transmit the information to the data processing module.

2. A distributed wireless intelligent alignment system for rail vehicles according to claim 1, characterized in that: The data processing module includes a presentation layer, a logic analysis layer and a data service layer. The presentation layer includes a user interaction interface between the user displayed in the computer and the test system, and is responsible for real-time monitoring of test configuration and test analysis data. The logic analysis layer is used to automatically process and analyze test data through calibration sensors, and pass the analysis results to the presentation layer. The data service layer is used to provide resource access support to the logic analysis layer through the database management system, and receive operation requirements for test data in the database issued by the logic analysis layer.

3. A distributed wireless intelligent alignment system for rail vehicles according to claim 2, characterized in that: Furthermore, the logic analysis layer can realize automatic processing and analysis of test data, including data filtering, numerical calculation, performance modeling and performance determination, and pass the analysis results to the presentation layer.

4. A distributed wireless intelligent alignment system for rail vehicles according to claim 3, characterized in that: According to the characteristics of rail vehicle signals, the calibration calculation method adopts Butterworth filtering. Butterworth filtering performs low-pass filtering on the collected data, and the filtering parameters are set according to regulations. The braking response time, corrected braking distance, average braking deceleration, longitudinal impact rate, and thermal capacity items are automatically calculated for the filtered data. Finally, according to the established braking system performance model, all valid test analysis data are statistically analyzed to determine the braking system performance and predict the risk of system failure.

5. A distributed wireless intelligent alignment system for rail vehicles according to claim 4, characterized in that: The logic analysis layer determines the braking system performance by performing braking distance correction, longitudinal impact rate calculation, and electric-to-air conversion smoothness evaluation based on the test data through the braking system performance model.

6. A distributed wireless intelligent alignment system for rail vehicles according to claim 1, characterized in that: The calibration sensor includes a cable terminal and a cable terminal connector, and the cable terminal and the cable terminal connector are both installed on the cable bundle to be tested.

7. A distributed wireless intelligent alignment system for rail vehicles according to claim 1, characterized in that: The calibration host also includes an intelligent gateway and a database, which transmit data to each other wirelessly. The intelligent gateway is used to receive the data calculation results sent by the data processing module and send the data calculation structure to the database.

8. A distributed wireless intelligent alignment system for rail vehicles according to claim 7, characterized in that: The intelligent gateway includes hard-wired command intelligent detection terminal, air circuit pressure intelligent detection terminal, braking force intelligent detection terminal, acceleration intelligent detection terminal, radar intelligent detection terminal, brake system maintenance terminal, thermocouple intelligent detection terminal, and GPS intelligent detection terminal. After the intelligent detection terminal collects the control instructions, it sends them to the intelligent gateway through the wireless WIFI module.

9. A distributed wireless intelligent alignment system for rail vehicles according to claim 8, characterized in that: The hard-wire command intelligent detection terminal includes an embedded digital acquisition and transmission module; the air circuit pressure intelligent detection terminal collects the brake cylinder pressure and sends it to the wireless intelligent gateway through the wireless WIFI module. The air circuit pressure intelligent detection terminal includes a pressure sensor module and an embedded analog quantity acquisition and transmission module; the braking force intelligent detection terminal collects the brake shoe / brake pad braking force and sends it to the wireless intelligent gateway through the wireless WIFI module. The braking force intelligent detection terminal includes a braking force sensor and an embedded analog quantity acquisition and transmission module; the acceleration intelligent detection terminal collects the acceleration of the motor vehicle and the trailer and sends it to the wireless intelligent gateway through the wireless WIFI module. The acceleration intelligent detection terminal includes an acceleration sensor and an embedded analog quantity acquisition and transmission module; the radar intelligent detection terminal collects the train speed and running distance and sends it to the wireless intelligent gateway through the wireless WIFI module. The radar intelligent detection terminal includes a Doppler radar and an embedded acquisition and transmission module.

10. A distributed wireless intelligent alignment system for rail vehicles according to claim 8, characterized in that: After the wireless terminal of the brake system maintenance terminal collects all the data of the internal communication bus of the brake system, it is sent to the wireless intelligent gateway through the wireless WIFI module after protocol conversion. The wireless terminal of the brake system maintenance terminal includes an embedded communication device; after the thermocouple intelligent detection terminal collects the brake shoe / brake pad temperature, it is sent to the wireless intelligent gateway through the wireless WIFI module. The thermocouple intelligent detection terminal includes a thermocouple and an embedded analog quantity acquisition and transmission module; after the GPS intelligent detection terminal collects the train position, it is sent to the wireless intelligent gateway through the wireless WIFI module. The GPS intelligent detection terminal includes a GPS module and an embedded communication module.

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