Vehicle-mounted road spectrum testing system based on surface structured light

A test system, surface structured light technology, applied in machine/structural component testing, vehicle testing, measuring devices, etc., can solve problems such as discontinuous data, expensive proving grounds, and easy to be restricted by objective conditions, etc., to reduce Sampling frequency, reducing the effect of detecting blind spots and noise

Inactive Publication Date: 2010-09-08
SHANGHAI VIGOR TECH DEV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, occlusion is unavoidable in the acquisition process. If only a single laser line is used, detection blind spots may occur
Moreover, due to the influence of sampling frequency or some external factors, data discontinuity or jumps will occur during 3D reconstruction.
[0004] The vehicle dynamic perform

Method used

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  • Vehicle-mounted road spectrum testing system based on surface structured light
  • Vehicle-mounted road spectrum testing system based on surface structured light
  • Vehicle-mounted road spectrum testing system based on surface structured light

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Embodiment Construction

[0037] The invention discloses a vehicle-mounted road spectrum testing system based on surface structured light, which will be further described in detail below with reference to the accompanying drawings.

[0038] see first figure 1 and Figure 5 , The system of the present invention includes a camera 1 , a projector 2 , a car body 3 , a data collection and processing device 5 , an inertial navigation system 6 , a GPS antenna 7 and a clock trigger synchronization board 8 . The projector 2 is fixed on the rear end of the mounting bracket 9 near the car, connected to a 12V DC power supply, and projects structured light stripes onto the road surface. The camera 1 is fixed at the end of the mounting bracket 9, connected to a 24V DC power supply, and photographs the grating deformed by the road surface. The camera 1 control port is connected to the clock trigger synchronization board 8 to receive the trigger clock signal, and the transmission port is connected to the control comp...

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Abstract

The invention relates to a vehicle-mounted road spectrum testing system based on surface structured light, comprising a camera, a projector, a vehicle body, data acquisition and processing equipment, an inertial navigation system, a GPS antenna and a clock triggering synchronization board. The system is characterized in that a plurality of three-dimensional point clouds capable of covering the whole road surface can be obtained by repeating the shooting process by a mobile projector and camera system, then coordinate conversion is carried out on the obtained three-dimensional point clouds in combination with the data acquired by the inertial navigation system, the data are converted to a uniform coordinate system, as the adjacent images overlap, denser and more reliable point cloud data can be obtained by correspondingly interpolating and filtering the redundant information; and the complete three-dimensional elevation data of the road surface to be tested can be obtained after splicing the point clouds obtained by scanning a plurality of images. The system provides a perfect scheme for road surface testing and can reduce the acquisition frequency while restoring the road surface elevation more veritably and lower hardware cost.

Description

technical field [0001] The invention belongs to a road surface detection system, in particular to a vehicle-mounted road spectrum test system based on surface structured light. Background technique [0002] In road surface inspection projects, multiple point laser range finders or line structured light triangulation systems are generally installed on the inspection vehicle to obtain road elevation change information. The point laser range finder has a limited measurement range and few sampling points, so it can only give a rough longitudinal profile of the road surface, and it is difficult to obtain accurate three-dimensional data of the road surface. [0003] Compared with the point laser range finder, the line structured light triangulation system solves the problem of collecting the cross section of the road surface. The detection results of adjacent laser lines are arranged in spatial order, so that more comprehensive three-dimensional data of road surface elevation can...

Claims

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Application Information

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IPC IPC(8): G01B11/25G01B11/02G01B11/30G01M17/007
Inventor 顾永刚冯潇张绪进
Owner SHANGHAI VIGOR TECH DEV
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