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A vehicle-mounted expressway inspection system and data acquisition and processing method

A highway and data acquisition technology, applied in inspection time patrols and other directions, can solve the problems of high omission rate, misjudgment, easy omission and misjudgment, etc., to improve quality and speed, ensure data accuracy, and ensure reliability. Effect

Active Publication Date: 2016-03-30
QINGDAO XIUSHAN MOBILE SURVEYING CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The manual inspection method has the following disadvantages: the workload of the staff is heavy, the efficiency is low, it is easy to miss and misjudgment, and there are safety hazards that affect the normal operation of the expressway
On April 1, 2012, Chang'an University applied for a laser road surface detection device for the depth of the road surface structure, which is used to detect the depth of the road surface structure. However, the laser road surface detection device has a single function
The current problems of damage detection equipment based on image technology are: (1) the current equipment can mainly identify cracks, but cannot accurately identify three-dimensional diseases such as wrapping, waves, and subsidence; (2) the post-processing workload is large, The rate of misjudgment and missed judgment is high, and it needs to be manually interpreted one by one in the later stage, and the processing time is too long; (3) Human and weather factors have a certain impact on the accuracy of the test results. For example, the recognition effect is different under different weather conditions
[0012] On September 22, 2011, the road surface detection method and system applied by the Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, it collects the acceleration in the vertical direction to detect the road surface, and the detection range is small
[0013] In addition, the traditional method cannot obtain accurate spatial location information, and cannot generate road digital elevation data for accurate settlement analysis; the inspection of traffic facilities is still field investigation, and the efficiency is low

Method used

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  • A vehicle-mounted expressway inspection system and data acquisition and processing method
  • A vehicle-mounted expressway inspection system and data acquisition and processing method
  • A vehicle-mounted expressway inspection system and data acquisition and processing method

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Experimental program
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Effect test

Embodiment 1

[0066] A vehicle-mounted highway inspection system includes a data acquisition system and a data processing system.

[0067] Data acquisition system, including:

[0068] Data acquisition equipment, including GPS receivers and antennas, inertial measurement units, laser scanners, and industrial CCD cameras, used to collect raw laser point clouds, images, and GPS / INS data related to highway road condition indicators;

[0069] The data acquisition industrial computer is used to receive and store the data collected by each data acquisition device, and the industrial CCD camera is connected to the data acquisition industrial computer through a cable;

[0070] The monitoring computer is connected to the same local area network with each data acquisition device and data acquisition industrial computer through a network switch, and interacts with data and status through a custom protocol based on TCP / IP;

[0071] Synchronization controller, used to coordinate time synchronization, st...

Embodiment 2

[0080] A data acquisition method of a vehicle-mounted highway inspection system, using the vehicle-mounted highway inspection system in Embodiment 1, such as Figure 5 As mentioned above, the monitoring design of the data acquisition system adopts the CS architecture. One end of the monitoring computer is used as the client, and the other end of the data acquisition device is used as the server. The client sends control commands to the server, and the client runs the monitoring program. Data acquisition equipment control, data acquisition, data display and status display of each data acquisition equipment.

[0081] The data acquisition process is to use the data acquisition equipment and the monitoring computer in the same local area network, and to exchange data and status through a custom protocol based on TCP / IP. Figure 6 A frame diagram of data acquisition and storage is shown.

[0082] Such as Figure 7 As shown, the monitoring computer runs the monitoring program and ...

Embodiment 3

[0093] A data processing method for a vehicle-mounted highway inspection system, using the vehicle-mounted highway inspection system in Embodiment 1, the original data collected during the highway inspection process includes laser point clouds, images, and GPS / INS data. The data processing method includes the following data processing steps:

[0094] aData preprocessing

[0095] Perform data analysis, attitude calibration, format conversion and project management output on the original laser point cloud, image and GPS / INS data acquired during the highway inspection process, such as Figure 8 Shown:

[0096] GPS / INS data processing

[0097] (1) Perform differential calculation on GPS data and analyze data accuracy;

[0098] (2) Combining differential GPS data and inertial navigation data for calculation, outputting high-precision time, position and attitude information;

[0099] Laser Scanner Preprocessing

[0100] (1) Perform signal filtering and denoising on the laser po...

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Abstract

The invention discloses a vehicle-mounted high-speed road inspection system, and a data acquisition and processing method based on the vehicle-mounted high-speed road inspection system. The inspection system aims to the technical disadvantage in an existing high-speed road inspection method, a movable inspection vehicle is adopted as a carrying platform for carrying multiple data collecting equipment, and the time synchronization, state response, data transmission and storage of each piece of data collecting equipment as well as data collecting equipment integration and monitoring technologies are organically adjusted through a high-precision synchronous controller; the operation reliability of the vehicle-mounted high-speed road inspection system is guaranteed, a data fusion technology and the true color valuation are used for achieving a real three-dimensional expression of a space surface feature, the result output and management are finished in a customizing manner, different requirements of clients are met, the quality of inspection on a road is greatly improved and the speed of the inspection on the road is greatly increased, and the in-time effective data reference is provided for road construction maintenance and management of a high-speed road department.

Description

technical field [0001] The invention relates to a vehicle-mounted expressway inspection system and a data acquisition and data processing method based on the vehicle-mounted expressway inspection system. Background technique [0002] In the construction, operation and maintenance of expressways, road condition indicators such as subgrade, pavement, facilities along the line, road markings, etc. are very important for road construction and maintenance departments. With the opening and operation of expressways, under multiple factors such as vehicle load, natural environment, and human factors, road disasters such as roadbed subsidence, road surface cracks, ruts, potholes, equipment damage along the line, and missing markings will inevitably occur on the road. directly affect the safety of vehicles. Therefore, expressway inspection is of great significance. [0003] The current common methods of expressway inspection include manual inspection and single disease inspection ve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G07C1/20
Inventor 卢秀山石波李国玉许君一田茂义王冬景冬
Owner QINGDAO XIUSHAN MOBILE SURVEYING CO LTD
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