Railway power supply equipment detection device

Abstract

The utility model discloses a railway power supply equipment detection device, which solves the problem that the existing railway power supply equipment detection device is difficult to install and poor in detection effect caused by infirm installation. The detection device comprises a host, a rigid platform, and a Beidou mobile station module, an attitude acquisition module, a laser radar acquisition module, a mileage coding module, an image acquisition module, a power supply module and a Beidou base station module which are electrically connected with the host, the upper end and the lower end of the transition connecting profile are each fixedly provided with a pipe hoop through a connecting corner connector, and the rigid platform is installed at the tail or the front section of a rail operation vehicle through the pipe hoops. A pair of adapter plates is fixedly installed at the four tail ends of the cross-shaped support. The device adopts an anti-vibration design, can be firmly mounted, meets a complex test environment of the rail operation vehicle, and ensures long-term stable operation of the system.

Description

Railway power supply equipment testing device Technical Field

[0001] This utility model relates to the technical field of railway power supply equipment testing equipment. Background Technology

[0002] With the increase in the operating mileage of electrified railways and the frequency of train operations, the inspection and maintenance work of power supply sections is becoming increasingly heavy. Therefore, higher demands are placed on the efficiency and accuracy of the inspection of the geometric parameters of power supply equipment. The geometric condition of the overhead contact system is closely related to its safe operation, directly affecting the normal current intake of electric locomotives and the service life of the pantograph-catenary system. Therefore, it is necessary to conduct routine inspections of the geometric parameters of power supply equipment to provide data support for assessing its operational status.

[0003] Currently, automation in power supply equipment inspection is only achieved in the overhead contact line inspection. The main methods for detecting overhead contact line geometric parameters are portable laser measuring equipment and the high-speed railway power supply safety monitoring system (6C system). While the 1C, 3C, and 4C sections of the 6C system can detect overhead contact line geometric parameters, this system cannot expand its detection range and cannot detect power supply equipment such as weight height, support side clearance, support tilt, and lighthouse tilt. Furthermore, the kilometer marker location information needs to be manually entered during use, and real-time high-precision satellite positioning is not possible. In power operation and maintenance, the inspection of railway lighthouses currently relies mainly on manual visual inspection and outsourced inspection by manufacturers, resulting in low efficiency and high costs.

[0004] Given that existing methods for inspecting railway power supply equipment are increasingly unable to meet the needs of routine inspections of overhead contact lines, there is an urgent need for a highly efficient, low-cost, and contactless automated inspection method.

[0005] The research on railway power supply equipment testing in this system aims to improve the safety and reliability of railway power supply equipment. For example, by utilizing the information fusion of the BeiDou satellite navigation system and inertial navigation systems, precise detection and positioning of power supply equipment can be achieved. Currently, both domestically and internationally, there has been some progress in research on railway power supply equipment testing based on BeiDou inertial navigation fusion technology.

[0006] Domestically, China Railway Corporation and other organizations have conducted numerous studies on the testing and inspection of railway power supply equipment. These include the establishment of an intelligent inspection system for railway power supply equipment, which utilizes BeiDou inertial navigation fusion technology to achieve real-time monitoring and fault early warning of power supply equipment status. Furthermore, several research institutions have conducted related research on railway power supply equipment testing, exploring fault diagnosis methods and algorithms based on BeiDou inertial navigation fusion technology.

[0007] Internationally, some countries have also made progress in the research and development of railway power supply equipment inspection. For example, Europe uses an intelligent inspection system for the inspection and maintenance of railway power supply equipment, which can achieve real-time monitoring and fault diagnosis of the equipment.

[0008] Currently, there is a lack of a detection device that is easy to install and securely mounted. Summary of the Invention

[0009] To address the shortcomings of existing technologies, this utility model provides a railway power supply equipment testing device, which solves the problems of difficult installation and poor testing results caused by unreliable installation of existing railway power supply equipment testing equipment.

[0010] The technical solution adopted by this utility model to solve its technical problem is as follows:

[0011] A railway power supply equipment testing device includes a main unit, a rigid platform, and a Beidou mobile station module, an attitude acquisition module, a lidar acquisition module, a mileage encoding module, an image acquisition module, a power supply module, and a Beidou base station module electrically connected to the main unit. The device is characterized in that: the rigid platform includes a cross-shaped bracket, transition connecting profiles, connecting angle brackets, pipe clamps, and adapter plates. A transition connecting profile is fixedly connected to both ends of the transverse aluminum profile of the cross-shaped bracket, and a pipe clamp is fixedly installed at the upper and lower ends of the transition connecting profile via connecting angle brackets. The rigid platform is then installed at the rear or front of a track maintenance vehicle via these pipe clamps. A pair of adapter plates are fixedly installed at the four ends of the cross-shaped bracket.

[0012] The Beidou mobile station module is fixed at the high point of the cross-shaped bracket;

[0013] The attitude acquisition module, the odometer encoding module, and the lidar acquisition module are mounted on a cross-shaped bracket.

[0014] The image acquisition module is mounted on the adapter board;

[0015] The Beidou base station module is installed on the foundation inside the station or next to the track;

[0016] The main unit and power supply module are mounted on the rail work vehicle.

[0017] Furthermore, the adapter plate is preferably a rectangular aluminum plate or a steel plate, and the adapter plates are arranged in pairs and located on both sides of the cross-shaped bracket.

[0018] Furthermore, the image acquisition module is an industrial camera, and each pair of industrial cameras faces opposite directions.

[0019] Furthermore, industrial cameras facing left and right are installed at the top and bottom ends of the cross-shaped bracket, and industrial cameras facing up and down are installed at the left and right ends respectively.

[0020] Furthermore, the cross-shaped bracket is composed of two aluminum profiles connected by corner brackets.

[0021] Furthermore, the attitude acquisition module includes an accelerometer, a gyroscope, and a magnetometer.

[0022] The beneficial effects of this utility model are:

[0023] This device, through its vibration-resistant hardware and installation method, ensures reliable installation, meets the complex testing environment of rail-mounted vehicles, and guarantees long-term stable operation of the system. The research results effectively compensate for the shortcomings of existing devices and allow for rapid assembly and disassembly through the removal of the steel hoops, making it of significant engineering application value. Attached Figure Description

[0024] Figure 1 shows the electrical connection diagram of each hardware module in this device.

[0025] Figure 2 is a three-dimensional assembly diagram of the device, showing the front view.

[0026] Figure 3 is a three-dimensional assembly diagram of the device, showing the back side.

[0027] In the diagram: 10, cross-shaped bracket; 20, transition connecting profile; 30, connecting angle bracket; 40, pipe clamp; 50, adapter plate; 51, industrial camera; 60, Beidou mobile station module; 70, mounting block; 80, lidar acquisition module. Detailed Implementation

[0028] This embodiment will describe in detail the composition and circuit connection of the railway power supply equipment detection device with reference to Figures 1 to 3 in the specification. The hardware of the device consists of the following parts:

[0029] The hardware component includes:

[0030] The rigid platform comprises a cross-shaped bracket 10, transition connecting profiles 20, connecting angle brackets 30, pipe clamps 40, and an adapter plate 50. The cross-shaped bracket 10 is composed of two aluminum profiles, one vertical and one horizontal, fixed in the middle by connecting angle brackets 30 to form a cross-shaped bracket system. A transition connecting profile 20 is installed at each end of the horizontal aluminum profile of the cross-shaped bracket, preferably using aluminum profiles of the same specification to reduce selection difficulty. A pipe clamp 40 is fixed at each end of the transition connecting profile by connecting angle brackets 30, forming four pipe clamps. These four pipe clamps secure the rigid platform to the rear of the rail-mounted vehicle, thus completing the rigid platform's fixation.

[0031] Furthermore, the position and state of the cross-shaped bracket can be adjusted through the aforementioned multiple connecting corner brackets 30.

[0032] Furthermore, at the four ends of the aforementioned cross-shaped bracket, a pair of adapter plates 50 are fixedly installed by T-bolts. The adapter plates are preferably rectangular aluminum plates or steel plates. The adapter plates are arranged in pairs and located on both sides of the aluminum profile in the cross-shaped bracket. They are used to install image acquisition modules. The industrial cameras 51 in the eight image acquisition modules are arranged in pairs, and each pair of industrial cameras faces opposite directions. Specifically, pairs of industrial cameras facing left and right are respectively arranged at the top and bottom ends of the vertical aluminum profile, and industrial cameras 51 facing up and down are respectively arranged at the left and right ends of the horizontal aluminum profile, so as to capture images of the track work vehicle in the up, down, left and right directions.

[0033] The host computer is a desktop computer and is installed inside the rail work vehicle. The host computer is equipped with a 4G communication module.

[0034] Also includes

[0035] 1) Beidou base station module; This Beidou base station module is installed on a fixed foundation inside the station or next to the track. This Beidou base station module provides the track maintenance vehicle with accurate location information and vehicle location data, and communicates with the host via 4G or 5G communication.

[0036] Base station site selection criteria:

[0037] Choose an open, unobstructed area to ensure satellite signal reception quality;

[0038] Keep away from sources of electromagnetic interference to reduce the impact of signal noise;

[0039] Ensure the geological stability of the area surrounding the base station to avoid vibration interference.

[0040] Equipment installation steps

[0041] Install the antenna and adjust it to the optimal angle to maximize signal reception;

[0042] Connect the power supply and data transmission lines to ensure a stable power supply;

[0043] Configure the BeiDou base station parameters and conduct tests to confirm normal operation. The tests include:

[0044] Differential data generation and transmission

[0045] The base station calculates the differential correction in real time and generates a differential data stream;

[0046] Differential data is transmitted to the mobile station via wireless network or radio.

[0047] Ensure the real-time nature and accuracy of differential data to improve positioning precision.

[0048] Differential service testing

[0049] Verify that the reception and parsing of differential data are normal;

[0050] Check whether the differential correction is effectively applied to the mobile station positioning.

[0051] Multiple tests were conducted to confirm the stability and reliability of the differential service.

[0052] 2) Beidou Mobile Station Module 60; installed at the highest point of the cross-shaped bracket for easy signal reception. This Beidou mobile station module is essentially a signal receiving device. It connects to the host computer wirelessly or via wired connection, receives Beidou satellite signals and differential signals from the Beidou base station module, outputs high-precision positioning data (latitude, longitude, and elevation), and then transmits the signal to the host computer for processing. This module is responsible for receiving and demodulating the C / A code signals propagated by the Beidou satellites.

[0053] Testing and setting up the Beidou mobile station module:

[0054] Location mode selection

[0055] Choose between single-point positioning or differential positioning mode based on the application scenario;

[0056] Configure the location update frequency to meet data collection requirements;

[0057] Set a positioning accuracy threshold to filter out abnormal positioning results.

[0058] Data storage settings

[0059] Configure the data storage format and storage path;

[0060] Set data storage capacity limits to prevent insufficient storage space;

[0061] Enable data compression to save storage space.

[0062] 3) Attitude Acquisition Module (IMU): Installed in the middle of the cross-shaped bracket, the attitude acquisition module is integrated into a mounting block 70, which is fixed to the middle of the aluminum profile of the cross-shaped bracket. The attitude acquisition module includes an accelerometer, a gyroscope, and a magnetometer. The accelerometer is used to measure the acceleration of the track maintenance vehicle, the gyroscope to measure the angular velocity, and the magnetometer to measure changes in magnetic field strength. These sensors work together to provide accurate motion state estimates of the track maintenance vehicle through data fusion technology. This attitude acquisition module is connected to the host computer via a USB interface and a data cable.

[0063] The debugging of the attitude acquisition module includes:

[0064] Perform IMU sensor calibration to eliminate system errors;

[0065] Calibrate the accelerometer and gyroscope to ensure measurement accuracy;

[0066] Perform sensor calibration regularly to maintain data quality.

[0067] Configure the sampling rate for acceleration and angular velocity;

[0068] Set data filtering parameters to reduce the impact of noise;

[0069] Enable data timestamp synchronization to ensure data consistency;

[0070] 4) LiDAR acquisition module 80; This LiDAR acquisition module is installed on top of the mounting block 70 and faces the front or rear of the railcar to ensure scanning accuracy. This LiDAR acquisition module is connected to the host computer via a data cable.

[0071] The lidar acquisition module configuration includes:

[0072] Set the laser emission frequency and power to adapt to different environments;

[0073] Configure the scan range and resolution to meet measurement requirements;

[0074] Adjust the laser beam direction to optimize the scanning effect.

[0075] 5) Image Acquisition Module; This image acquisition module includes 8 industrial cameras 51, which are connected to the host computer via data cables. Each camera captures images in the up, down, left, and right directions. The captured image data is transmitted to the host computer, where visual algorithms (such as SLAM) are used for feature matching to assist in localization and environmental recognition. It is used to identify the object under test and generate stereo pairs for dimensional measurement, etc.

[0076] Adjusting the parameters of an industrial camera includes:

[0077] Choose the appropriate exposure time and aperture size to suit the lighting conditions;

[0078] Configure image resolution and frame rate to meet data acquisition requirements;

[0079] Set white balance and color correction parameters to ensure image quality.

[0080] 6) Mileage encoder module; mounted at any position on the cross-shaped bracket, this mileage encoder module uses a visual odometer and is connected to the host via a USB interface and data cable.

[0081] The odometer encoder module operates as follows:

[0082] Real-time detection of vehicle travel distance and speed;

[0083] Convert displacement information into electrical signals;

[0084] Displacement signals are sent to the lidar acquisition module and the industrial camera.

[0085] 7) Power supply module; The power supply module includes lead-acid batteries and inverters, providing power support for the main unit, radar, industrial cameras and various functional modules mentioned above;

[0086] This device is selected for assembly at the rear and front of the railcar. It is a rigid platform assembled with an aluminum profile base via pipe clamps, and the rigid platform is installed onto the assembly platform via aluminum alloy angle brackets, which has the advantage of convenient installation and assembly.

[0087] The industrial camera in this embodiment is a high-precision industrial camera with a range of ≥120m and an accuracy of ±15mm, and achieves multi-view image acquisition through imaging from eight directions.

[0088] The lidar and industrial camera group in this device are arranged at a 90° angle and do not interfere with each other.

[0089] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Without departing from the spirit of the present utility model, all modifications and improvements to the present utility model by those skilled in the art should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A railway power supply equipment testing device, comprising a main unit, a rigid platform, and a Beidou mobile station module, an attitude acquisition module, a lidar acquisition module, a mileage encoding module, an image acquisition module, a power supply module, and a Beidou base station module electrically connected to the main unit, characterized in that: The rigid platform includes a cross-shaped bracket, transition connecting profiles, connecting angle brackets, pipe clamps, and adapter plates. A transition connecting profile is fixedly connected to both ends of the transverse aluminum profile of the cross-shaped bracket, and a pipe clamp is fixedly installed at the upper and lower ends of the transition connecting profile via connecting angle brackets. The rigid platform is then installed at the rear or front of the track maintenance vehicle via these pipe clamps. A pair of adapter plates are fixedly installed at the four ends of the cross-shaped bracket, and the BeiDou mobile station module is fixed at the highest point of the cross-shaped bracket. The attitude acquisition module, mileage encoding module, and lidar acquisition module are installed on the cross-shaped bracket. The image acquisition module is installed on the adapter plates. The BeiDou base station module is installed on the foundation inside the station or beside the track. The main unit and power supply module are placed on the track maintenance vehicle.

2. The railway power supply equipment testing device according to claim 1, characterized in that, The adapter plate is a rectangular aluminum plate or steel plate, and the adapter plates are arranged in pairs and located on both sides of the cross-shaped bracket.

3. The railway power supply equipment testing device according to claim 1, characterized in that, The image acquisition module is an industrial camera, and each pair of industrial cameras faces opposite directions.

4. The railway power supply equipment testing device according to claim 3, characterized in that, The top and bottom ends of the cross-shaped bracket are equipped with industrial cameras facing left and right, and the left and right ends are equipped with industrial cameras facing up and down respectively.

5. The railway power supply equipment testing device according to claim 1, characterized in that, The cross-shaped bracket is composed of two aluminum profiles connected by corner brackets.

6. The railway power supply equipment testing device according to claim 1, characterized in that, The attitude acquisition module includes an accelerometer, a gyroscope, and a magnetometer.

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