Road information board working performance detection device based on unmanned aerial vehicle

Abstract

The invention relates to a road information board working performance detection device based on an unmanned aerial vehicle. The road information board working performance detection device is composed of the unmanned aerial vehicle, a high-definition camera, a color brightness meter, an infrared scanner and data processing software. Wherein the color brightness meter and the infrared scanner are used for detecting the performance of the highway information board, and the high-definition camera is mainly used for checking fault modules of the information board and rechecking the functions of the information board. The detection device is generally arranged at the top end of a detection vehicle, performs power supply and information uploading when the vehicle stops, can operate singly after arriving near a highway information board, can also perform real-time linkage work through a preset program, realizes one-stop data acquisition of functions, performance and operation states of the information board, can perform detailed technical condition evaluation on the operation information board, and has a wide application prospect. And data support is provided for later scientific maintenance.

Description

Technical Field

[0001] This invention relates to the field of road and bridge information technology, specifically to a drone-based highway information board performance testing device, which consists of a drone, a high-definition camera, and a testing instrument. Addressing the practical needs of inspection during the operation of highway information boards, it enables one-stop data collection of the information board's functions, performance, and operational status. The test results are used to evaluate the technical condition of the information board and determine its health status, making the testing more accurate and convenient. Background Technology

[0002] With the rapid development of highway construction in my country, the number of highway electromechanical facilities has also increased significantly. Among them, information boards, as important road section monitoring facilities, play a crucial role in information dissemination and guidance. The normal working status of information board facilities is of great significance to the normal and safe operation of road sections. Typically, during completion (handover) acceptance, periodic inspections, and special inspections, their functions, performance, and other measured items are tested, and their technical condition is evaluated. Road section information board testing mainly includes functional testing and performance testing. Functional testing can generally be conducted on the roadside of the information board, through remote communication and control with the monitoring room, to confirm the display, brightness adjustment, self-testing, and other functions of the information board. Performance testing requires using a road lighting vehicle to raise the testing personnel to a position parallel to the height of the information board, and measuring the brightness and colorimetric indicators of the information board using a color luminance meter. For road sections not yet open to traffic, testing can be achieved using a road lighting vehicle and manual inspection; however, for road sections already open to traffic, performance testing requires road closure, especially when testing all information boards along the entire route, which is time-consuming, labor-intensive, and poses safety hazards. Therefore, there is an urgent need to propose a more applicable and safer testing device or method. Summary of the Invention

[0003] To address the existing problems in the inspection of roadside monitoring and information board facilities, this invention proposes a drone-based highway information board performance testing device. By combining a color luminance meter, an infrared scanner, a high-definition camera, and a drone, the data acquisition process is optimized. Through collaborative acquisition and data sharing, the acquisition results are made more accurate, real-time, and efficient, while ensuring the safety and reliability of the acquisition process.

[0004] A drone-based highway information board performance testing device includes: a drone, a high-definition camera, a color luminance meter, an infrared scanner, and data processing software. The drone, a quadcopter, provides power to the testing device, enabling single-point scanning, hovering, and other actions to collect data in conjunction with the testing equipment. The high-definition camera is primarily used for the drone's field of view, troubleshooting faulty modules on the information board, and verifying the board's functionality. The color luminance meter is mainly used for collecting luminance and chromaticity data during highway information board performance testing. Using one or more acquisition units, perpendicular to the light-emitting surface of the information board at a specified distance, it collects luminance and chromaticity data in real time, sequentially collecting data from specified sampling points and calculating the results. The infrared scanner is mainly used to scan and evaluate the operating status of the entire highway information board module and the intelligent power distribution cabinet, promptly recording any instances of heat loss or overheating. The data processing software temporarily stores and summarizes the collected data values, locations, and image information. When the testing device is parked, the collected information is saved to the testing vehicle's server for analysis and technical condition assessment.

[0005] The workflow of this invention is as follows: The detection device involved in the invention is mainly for high-precision and rapid detection of the functions, performance, and operating status of highway information boards. The functions include display, brightness adjustment, and self-test; the performance includes brightness (single point, average) and chromaticity (chromaticity coordinates); and the operating status mainly includes the fault status of the information board module and the operating status of each module of the information board and the intelligent power distribution control cabinet of the gantry. First, the vehicle carrying the detection device is brought to the vicinity of the highway information board (gantry, cantilever). The information board is then adjusted to the fully open state. The data acquisition program is set according to the number of detection devices (single or multiple units). Once a single detection device reaches the designated acquisition point (fixed distance and height), the acquisition program begins, acquiring brightness at positions A1-A12 and chromaticity coordinates at positions B1-B10. During the movement, each function is verified individually using a camera, and the status of the entire module is scanned, recording the location of any faulty modules. Simultaneously, an infrared scanner scans and evaluates the operating status of the entire highway information board module and the intelligent power distribution cabinet, promptly reporting and recording any instances of heat loss or overheating. Finally, data on the information board's function, performance, and operating status are obtained.

[0006] The technical effects achieved by this invention are as follows: The unmanned aerial vehicle (UAV)-based highway information board performance testing device proposed in this invention, compared with the traditional street light vehicle plus manual testing, can achieve fully automatic data collection without road closure during the testing process. It can collect data through a vehicle-mounted data acquisition device or independently, and can preset data acquisition programs for different information boards to achieve full coverage testing of the functions, performance and operating status of the information boards, making the technical condition assessment of highway information boards more operable and feasible. Attached Figure Description

[0007] Figure 1 This is a schematic diagram of the detection device in this invention.

[0008] Figure 2 This is a schematic diagram of the detection device in this invention.

[0009] Figure 3 This is a schematic diagram of the data acquisition points of the detection device in this invention.

[0010] Figure 1 In the diagram: M1, M2, and M3 are detection devices; L11 is the horizontal distance from M1 to the data collection plane of the information board; L12 is the vertical distance from M1 to the ground; L21 is the horizontal distance from M2 to the data collection plane of the information board; L22 is the vertical distance from M2 to the ground; L31 is the horizontal distance from M3 to the data collection plane of the information board; L32 is the vertical distance from M3 to the ground; 1-2 are the information boards being measured; and 1-3 are the vehicles carrying the data collection devices.

[0011] Figure 2 In the middle section: 1, 2, 3, and 4 are the rotor structure of the detection device; 5 is the color brightness acquisition instrument; 6 is the acquisition instrument rotation adjustment device; 7 is the main structure; 8 is the storage and power supply device; 9 is the infrared scanner; 10 is the camera rotation adjustment device; 11 is the high-definition camera acquisition instrument; and 12 and 13 are the support frame of the detection device.

[0012] Figure 3 In the middle: Points A1 to A12 are the brightness acquisition points, and points B1 to B10 are the chromaticity coordinate acquisition points. Detailed Implementation

[0013] The following is a detailed description of the performance testing device for highway information boards based on unmanned aerial vehicles (UAVs) of the present invention, with reference to the accompanying drawings and specific embodiments: Example

[0014] Combination Figure 1 As shown, Figure 1 This is a schematic diagram of the working performance testing device for highway information boards in this invention. M1, M2, and M3 are testing devices, 1-2 are the information boards under test, and 1-3 are the vehicles carrying the data acquisition equipment.

[0015] Figure 1M1, M2, and M3 are detection devices that can operate independently or in combination. The diagram shows three data acquisition units simultaneously detecting the information board. L11 is the horizontal distance from M1 to the information board's data acquisition plane, and L12 is the vertical distance from M1 to the ground. L21 is the horizontal distance from M2 to the information board's data acquisition plane, and L22 is the vertical distance from M2 to the ground. L31 is the horizontal distance from M3 to the information board's data acquisition plane, and L32 is the vertical distance from M3 to the ground. The data acquisition distance is determined based on the elevation, size, and model of the information board being detected.

[0016] Figure 1 1-2 are the information boards being tested, which can be gantry-type information boards or cantilever information boards; Figure 1 Vehicles 1-3 are inspection vehicles, which carry data acquisition devices. They can accommodate up to four devices, charge the devices, and transmit the data collected by the devices back to the onboard server in real time for storage, calculation, and analysis. They can also transport the devices to the next information board collection point.

[0017] Combination Figure 2 As shown, Figure 2 This is a schematic diagram of the detection device structure in this invention. 1, 2, 3, and 4 are the rotor structure of the detection device; 5 is a color brightness acquisition instrument; 6 is the acquisition instrument rotation adjustment device; 7 is the main structure; 8 is the storage and power supply device; 9 is the infrared scanner; 10 is the camera rotation adjustment device; 11 is the high-definition camera acquisition instrument; and 12 and 13 are the support frame of the detection device.

[0018] Figure 2 1, 2, 3, and 4 are the rotor structures of the detection device, which mainly provide flight power for the detection device and maintain a hovering state when collecting detection data; Figure 2 The middle 5 is a color luminance acquisition instrument, which can measure the luminance and chromaticity coordinates of parallel acquisition points with high precision. Figure 2 6 is the rotation adjustment device for the data acquisition instrument, which is mainly used to adjust and correct the angle of the color brightness data acquisition instrument during operation. Figure 2 The middle 7 is the main structure, which is the frame of the detection device. It is connected to the rotor structure and support frame and serves as the carrier for the detection equipment and power supply equipment. Figure 2 The middle 8 is a storage and power supply device. It stores the data recorded by the color brightness acquisition instrument, infrared scanner and high-definition camera, and provides a stable power output for the detection device. When it returns to the detection vehicle, it can transmit the data to the on-board server for storage, calculation and analysis, and replenish the power of the detection device. Figure 2 The middle 9 is an infrared scanner, which can scan and evaluate the operating status of the entire highway information board module and the intelligent power distribution cabinet. If heat loss or overheating is found, it can be reported and recorded in a timely manner. Figure 2The middle 10 is a camera rotation adjustment device, which can be rotated and its angle adjusted when the camera is acquiring image data; Figure 2 The middle 11 is a high-definition camera acquisition device. During the movement, the camera verifies each function one by one, realizing the integration of information board functions and troubleshooting. Figure 2 12 and 13 are support frames for the detection device, which provide support for the detection device when it lands and docks.

[0019] Combination Figure 3 As shown, Figure 3 This is a schematic diagram of the data acquisition points of the detection device in this invention. Points A1 to A12 are luminance acquisition points, and points B1 to B10 are chromaticity coordinate acquisition points.

[0020] Figure 3 Points A1 to A12 are the brightness acquisition points. After the detection device starts detecting the information board, it will be used according to the size of the information board being inspected. Figure 3 The brightness value is determined by the location of the information board and the coordinates of the collection points. One or more units can collect the value at the same time. The final brightness value of the information board is the average value of the brightness of the collection points. , Where n is the number of collection points. This represents the brightness value of a single point.

[0021] (1) When each brightness measurement value exceeds the average value by 30%, mark the location point as having a brightness deviation; (2) If the brightness of a sampling point is less than 60% of the average value, mark that point as a fault point.

[0022] As shown Figure 3 Points B1 to B10 are the color coordinate acquisition points. After the detection device starts detecting the information board, it will determine the color coordinates based on the size of the information board being inspected. Figure 3 The location of the color coordinate collection point is determined in the center position, and one or more units can collect data simultaneously.

[0023] The chromaticity coordinates are verified according to the horseshoe diagram. All the final chromaticity coordinate data collected must be qualified, and the chromaticity coordinate values ​​on the information board must be qualified.

[0024] This invention provides a drone-based performance testing device for highway information boards, comprising a drone, a high-definition camera, a color luminance meter, an infrared scanner, and data processing software. The color luminance meter and infrared scanner test the performance of the highway information boards, while the high-definition camera primarily troubleshoots faulty modules and verifies the board's functionality. The testing device is typically mounted on the top of a testing vehicle. While parked, it recharges its battery and uploads information. Upon reaching a highway information board, it can operate individually or, through a pre-programmed sequence, coordinate multiple units in real-time. This allows for one-stop data collection of the information board's functionality, performance, and operational status, enabling detailed technical condition assessments and providing data support for future scientific maintenance.

[0025] The embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Various changes that can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A device for testing the performance of a highway information sign based on an unmanned aerial vehicle (UAV), characterized in that, include: Drones, high-definition cameras, color luminance meters, infrared scanners, and data processing software, including: The drone has a quadcopter structure, which provides power to the detection device and enables it to perform single-point, scanning and hovering actions, and complete data collection in conjunction with the detection equipment. High-definition cameras are used for the mobile field of view of drones, troubleshooting of information board modules, and verification of information board functions; Color luminance meters are used for luminance and chromaticity data acquisition in the performance testing of highway information boards. By using one or more acquisition instruments, the luminance and chromaticity data of the information board are collected in real time at a specified distance perpendicular to the light-emitting surface of the information board. The specified sampling points are collected sequentially as required and the results are calculated. Infrared scanners are used to scan and evaluate the operating temperature status of all modules of highway information boards and intelligent power distribution cabinets. The data processing software temporarily stores and summarizes the collected data values, locations, and image information. When the detection device stops, it saves the collected information to the detection vehicle server for analysis and technical condition assessment.

2. The performance testing device for highway information boards based on unmanned aerial vehicles (UAVs) according to claim 1, characterized in that, High-precision and rapid testing is conducted on the functions, performance, and operational status of highway information boards. Functions include display, brightness adjustment, and self-test; performance includes single-point brightness, average brightness, and chromaticity; and operational status includes information board module malfunctions, and the operational status of each information board module and the gantry intelligent power distribution control cabinet. First, the vehicle carrying the detection device is positioned near any of the highway information boards, gantry, or cantilever structures. The information board is then fully open. A data acquisition program is set according to the number of detection devices. Once a single detection device reaches its designated acquisition point, the program begins, acquiring brightness data at positions A1-A12 and chromaticity coordinates at positions B1-B10. During the movement, each function is verified individually using a camera, and the entire module status is scanned, recording the location of any faulty modules. Simultaneously, an infrared scanner scans and evaluates the operational status of the entire highway information board module and the intelligent power distribution cabinet, promptly reporting and recording any instances of overheating or underheating. Finally, data on the information board's functionality, performance, and operational status are obtained.

3. The performance testing device for highway information boards based on unmanned aerial vehicles (UAVs) according to claim 1 or 2, characterized in that, The brightness value of the information board is the average value of the brightness of the data collection points; ， Where n is the number of collection points. This represents the brightness value of a single point.

4. The performance testing device for highway information boards based on unmanned aerial vehicles (UAVs) according to claim 3, characterized in that, (1) When each brightness measurement value exceeds the average value by 30%, mark the location point as having a brightness deviation; (2) If the brightness of a sampling point is less than 60% of the average value, mark that point as a fault point.

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