A motor train unit running part operation state monitoring system

Abstract

The utility model provides a kind of EMU running part operating condition monitoring system, can be automatically detected to EMU, improve collection accuracy and identification rate, effectively shoot EMU key component condition, timely maintenance and reduce failure, guarantee EMU safe operation;Including: data acquisition module, for real-time acquisition EMU train speed;Speed radar is used to data acquisition module;Vehicle body appearance detection module is used to obtain the image of EMU roof, car side and car bottom;Vehicle body running part temperature detection module is used to obtain the temperature image of EMU car bottom;Track edge size detection module is used to obtain track edge size image;Control end, with data acquisition module, vehicle body appearance detection module, vehicle body running part temperature detection module, track edge size detection module are all connected, for controlling image shooting frequency and vehicle speed synchronization;Host computer, with control end connection, for issuing control instruction to control end, and store and show EMU running part operating condition data.

Description

Technical Field

[0001] This utility model relates to the field of measurement technology for EMU components, specifically to an EMU running gear operation status monitoring system. Background Technology

[0002] During long-term operation on the line, the running performance of high-speed trains continuously declines due to changes in track conditions, wear of wheel and rail surfaces, and deterioration of the performance of various vehicle components. Therefore, it is necessary to measure the running condition of the high-speed train's running gear, and then use the measurement results to identify any faults in the train to ensure safe operation. Currently, the measurement of the running gear's running condition uses a laser rangefinder to detect approaching trains, followed by taking photos with a line-scan camera. However, the frequency of the line-scan camera is fixed, resulting in poor image quality. The main drawbacks of line-scan cameras in fixed-frequency shooting mode are as follows: (1) Speed ​​fluctuations can cause the images captured by the line scan camera to be stretched or compressed. For example, the image is compressed when the speed is too fast and stretched when the speed is too slow. Therefore, in practical applications, it is necessary to add a calibration board to accurately calculate the matching speed and equip a closed-loop control system to adjust the motor speed, which increases the complexity of the measurement system.

[0003] (2) Fixed frequency cannot handle objects with sudden speed changes (such as sudden stop / acceleration), which is prone to image tearing or splicing misalignment; and compared with line trigger mode (external trigger line shooting), fixed frequency lacks real-time adjustment capability and has more stringent requirements for motion stability. (3) The single-line imaging effect needs to be observed in real time through black and white calibration objects. Therefore, the frequency parameters need to be adjusted repeatedly during the debugging process, which increases the debugging complexity. It is also necessary to ensure that the scanning line of the line scan camera is perpendicular to the direction of movement, otherwise geometric distortion will be introduced. In summary, existing measurement methods suffer from problems such as a lack of data acquisition and processing capabilities, measurement tools lacking communication capabilities, a lack of on-site management tools, and low operational efficiency. Furthermore, traditional measurement methods are time-consuming, require at least two people to operate, involve high labor intensity, and require double the manpower and time for handling post-measurement repairs and faults. Utility Model Content

[0004] To address the aforementioned issues, this utility model provides a high-speed train running gear operation status monitoring system, which can automatically detect high-speed trains, improve data acquisition accuracy and recognition rate, effectively capture images of the status of key components of the high-speed train, promptly maintain and reduce faults, and ensure the safe operation of the high-speed train.

[0005] This utility model adopts the following technical solution: a high-speed train running gear operation status monitoring system, comprising: A data acquisition module, located in the station entrance area, is used to collect the real-time speed of the EMU train; wherein, the data acquisition module uses a speed measuring radar; The vehicle exterior inspection module is used to acquire images of the roof, sides, and underside of the EMU (Electric Multiple Unit). The temperature detection module for the running gear of the train body is used to acquire temperature images of the underside of the train set; The track edge dimension detection module is used to acquire track edge dimension images; The control terminal is connected to the data acquisition module, the vehicle body appearance inspection module, the vehicle body running gear temperature detection module, and the railside dimension detection module. It is used to control the image shooting frequency of the vehicle body appearance inspection module, the vehicle body running gear temperature detection module, and the railside dimension detection module to synchronize with the vehicle speed based on the vehicle speed signal fed back by the data acquisition module. The host computer, connected to the control terminal, is used to send control commands to the control terminal and receive detection image data transmitted by the control terminal, so as to store and display the running status data of the EMU running gear.

[0006] Furthermore, the vehicle exterior detection module includes a roof camera, a side camera, and an under-vehicle camera. All three cameras are linear scan cameras. They are all connected to the control terminal to receive frequency adjustment signals output by the control terminal, thereby synchronizing the image capture frequency of the roof camera, side camera, and under-vehicle camera with the vehicle speed. Furthermore, the roof camera is mounted on the roof of the train via a bracket, the side camera is mounted on the side of the train via a column, and the undercarriage camera is mounted on a track under the train. Furthermore, the speed measuring radar uses a Doppler radar to emit electromagnetic waves and receive the reflected signals from the train when the locomotive of the EMU enters the station, so as to obtain the real-time vehicle speed. Furthermore, the temperature detection module for the running gear of the vehicle body includes a temperature sensor and an infrared scanning camera. The infrared scanning camera is a linear scan camera. Both the temperature sensor and the infrared scanning camera are connected to the control terminal. The temperature sensor and the infrared scanning camera are respectively arranged at the acquisition positions of the train running gear. The temperature sensor feeds back the detected temperature data of the train running gear to the control terminal to realize temperature abnormality alarm. The infrared scanning camera realizes that the infrared temperature image shooting frequency of the infrared scanning camera is synchronized with the vehicle speed by receiving the frequency adjustment signal output by the control terminal. Furthermore, the train running gear includes, but is not limited to, the car body floor, wheelsets, and side frames.

[0007] The beneficial effects of this utility model are that, through the setting of a vehicle body appearance detection module, a vehicle body running gear temperature detection module, and a railside dimension detection module, it can realize automatic monitoring of the running gear operation status of the EMU. Furthermore, by setting up a speed measuring radar to collect the train speed in real time, the control terminal adjusts the image acquisition frequency of the vehicle body appearance detection module, the vehicle body running gear temperature detection module, and the railside dimension detection module according to the real-time train speed to ensure that the image acquisition frequency is synchronized with the train speed. This achieves optimal line-scan imaging results, ensuring that images of speeding vehicles are clearly identifiable. Therefore, it not only improves the acquisition accuracy and recognition rate but also effectively captures the condition of various key components of the EMU, thereby enabling timely maintenance and reducing faults, ensuring the safe operation of the EMU, and possessing significant practical value. Attached Figure Description

[0008] Figure 1 This is a structural block diagram of the present invention; Figure 2 This is a three-dimensional layout schematic diagram of this utility model; Figure 3 This is a top view of the layout of this utility model. Detailed Implementation

[0009] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0010] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments of the present invention can be combined with each other.

[0011] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.

[0012] like Figures 1-3 As shown, the present invention discloses a high-speed train running gear operation status monitoring system, comprising: a data acquisition module, arranged in the station entrance area, for real-time acquisition of the train speed; wherein, the data acquisition module uses a speed measuring radar 1; The vehicle exterior inspection module is used to acquire images of the roof, sides, and underside of the EMU (Electric Multiple Unit). The temperature detection module for the running gear of the train body is used to acquire temperature images of the underside of the train set; The track edge dimension detection module is used to acquire track edge dimension images; The control unit is connected to the data acquisition module, the vehicle body appearance inspection module, the vehicle body running gear temperature detection module, and the railside dimension detection module. It is used to control the image shooting frequency of the vehicle body appearance inspection module, the vehicle body running gear temperature detection module, and the railside dimension detection module to synchronize with the vehicle speed based on the vehicle speed signal fed back by the data acquisition module. The host computer, connected to the control terminal, is used to send control commands to the control terminal and receive detection image data transmitted by the control terminal, so as to store and display the running status data of the EMU's running gear.

[0013] The vehicle exterior inspection module includes a roof camera 6, a side camera (not shown in the figure), and an under-vehicle camera (not shown in the figure). All three cameras are linear scan cameras. They are all connected to a control terminal to receive frequency adjustment signals output by the control terminal, so as to synchronize the image capture frequency of the roof camera 6, the side camera, and the under-vehicle camera with the vehicle speed. The roof camera 6 is mounted on the roof of the train via a bracket 7, the side camera is mounted on the side of the train via a column 8, and the under-vehicle camera is mounted on a track 5 under the train. The bracket 7 connects the two columns 8.

[0014] The speed measuring radar 1 uses a Doppler radar to emit electromagnetic waves and receive the reflected signals from the train when the head car 2 of the EMU enters the station, so as to obtain the real-time average speed. The speed measuring radar 1 is installed on the platform 4 in the station area through the support 3. The speed measuring radar 1 has a speed measuring accuracy of up to 0.75 km / h2 and a fast response time.

[0015] The temperature detection module for the train's running gear includes a temperature sensor and an infrared scanning camera. The infrared scanning camera is a linear scan camera. Both the temperature sensor and the infrared scanning camera are connected to the control terminal. The temperature sensor and the infrared scanning camera are respectively arranged at the data acquisition positions of the train's running gear (the specific positions can be determined according to the actual detection situation). The temperature sensor feeds back the detected temperature data of the train's running gear to the control terminal to realize temperature abnormality alarm. The infrared scanning camera realizes that the infrared temperature image shooting frequency of the infrared scanning camera is synchronized with the train speed by receiving the frequency adjustment signal output by the control terminal. The train running gear includes, but is not limited to, the car body floor, wheelsets, and side frames.

[0016] This invention uses a speed-measuring radar to monitor vehicle speed in real time. The control terminal then adjusts the image capture frequency of the roof-mounted camera 6, side-mounted camera, under-mounted camera, and infrared scanning camera according to the vehicle speed to synchronize the image capture frequency with the vehicle speed, thereby achieving optimal line scan capture results. The algorithm by which the control terminal adjusts the image capture frequency according to the vehicle speed is implemented using existing calculation methods within the control terminal and is not the purpose of this patent. This invention only needs to ensure that the image capture frequency can be synchronized with the vehicle speed. Therefore, the speed-matched line scan has high accuracy, and there will be no image stretching or compression distortion during shooting, which can ensure image clarity and is more conducive to fault identification. In addition, frequency modulation can cope with objects with sudden speed changes, and it is not easy to produce image tearing or splicing misalignment, thereby ensuring the accuracy of height detection of key train running components.

[0017] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0018] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A system for monitoring the operating status of the running gear of a high-speed train, characterized in that: include: A data acquisition module, located in the station entrance area, is used to collect the real-time speed of the EMU train; wherein, the data acquisition module uses a speed measuring radar; The vehicle exterior inspection module is used to acquire images of the roof, sides, and underside of the EMU (Electric Multiple Unit). The temperature detection module for the running gear of the train body is used to acquire temperature images of the underside of the train set; The track edge dimension detection module is used to acquire track edge dimension images; The control terminal is connected to the data acquisition module, the vehicle body appearance inspection module, the vehicle body running gear temperature detection module, and the railside dimension detection module. It is used to control the image shooting frequency of the vehicle body appearance inspection module, the vehicle body running gear temperature detection module, and the railside dimension detection module to synchronize with the vehicle speed based on the vehicle speed signal fed back by the data acquisition module. The host computer, connected to the control terminal, is used to send control commands to the control terminal and receive detection image data transmitted by the control terminal, so as to store and display the running status data of the EMU running gear.

2. The EMU running gear operation status monitoring system according to claim 1, characterized in that: The vehicle exterior detection module includes a roof camera, a side camera, and an under-vehicle camera. All three cameras are linear scan cameras. They are all connected to the control terminal to receive frequency adjustment signals output by the control terminal, thereby synchronizing the image capture frequency of the roof camera, side camera, and under-vehicle camera with the vehicle speed.

3. The EMU running gear operation status monitoring system according to claim 2, characterized in that: The roof-mounted camera is mounted on the roof of the train via a bracket, the side-mounted camera is mounted on the side of the train via a column, and the under-mounted camera is mounted on a track under the train.

4. The EMU running gear operation status monitoring system according to claim 1, characterized in that: The speed measuring radar uses a Doppler radar to emit electromagnetic waves and receive the reflected signals from the train when the lead car of the EMU enters the station, in order to obtain the real-time train speed.

5. The EMU running gear operation status monitoring system according to claim 1, characterized in that: The temperature detection module for the train's running gear includes a temperature sensor and an infrared scanning camera. The infrared scanning camera is a linear scan camera. Both the temperature sensor and the infrared scanning camera are connected to the control terminal. The temperature sensor and the infrared scanning camera are respectively arranged at the acquisition positions of the train's running gear. The temperature sensor feeds back the detected temperature data of the train's running gear to the control terminal to realize temperature abnormality alarm. The infrared scanning camera realizes that the infrared temperature image shooting frequency of the infrared scanning camera is synchronized with the vehicle speed by receiving the frequency adjustment signal output by the control terminal.

6. The EMU running gear operation status monitoring system according to claim 5, characterized in that: The train running gear includes, but is not limited to, the car body floor, wheelsets, and side frames.

Images