Improved comprehensive intelligent detecting vehicle for asphalt pavement damages

Abstract

The invention discloses an improved comprehensive intelligent detecting vehicle for asphalt pavement damages. The vehicle is characterized in that the vehicle comprises a vehicle body, a pavement damage detector, a pavement deformation detector, a GPS (global position system) device and a mileage ranging device, and the pavement damage detector which is arranged on the front end of the vehicle body acquires pavement damage information through shooting pavement images; the pavement deformation detector which is arranged on the tail end of the vehicle body determines pavement deformation information through projecting at least three parallel laser ray beams and at least one laser ray beam intersected with the parallel laser rays onto ground deformations; the GPS device is arranged on the top of the vehicle body; and the mileage ranging device is arranged on a wheel shaft of the detecting vehicle. By continuously or discontinuously shooting the pavement, rapidly detecting the three-dimensional pavement deformations through a structured light projection principle, effectively overcoming the interference of sunlight during the day, positioning damaged zones of the pavement, and obtaining accurate stake number positions of the pavement damages relative to a routine in the invention, damage and deformation data can be obtained at a normal driving speed.

Description

technical field [0001] The invention belongs to the field of traffic engineering and relates to a road surface detection vehicle, in particular to a detection vehicle aimed at the damage of asphalt pavement. Background technique [0002] With the substantial increase in the mileage of high-grade highways and expressways and the increase in traffic volume year by year, accurate and rapid detection of road damage without disturbing traffic has become an urgent need for road maintenance management. The main damage of asphalt pavement can be divided into surface damage and deformation. The scope and degree of these two types of damage are usually the basis for asphalt pavement maintenance. The pavement testing equipment that has come out or is in the research stage also mainly detects these two types of damage . Among them, non-destructive testing based on image processing technology is an important direction of research in this field, but the current technical level is still n...

AI Technical Summary

Problems solved by technology

At present, most laser structured light has the problem that it can only be detected at night or the detection accuracy is not high due to vibration.

In addition, no matter which technology is used, the current detection of road deformation has the problem of ignoring the three-dimensional deformation of the road surface, and the established three-dimensional shape of the road surface cannot accurately reflect the working state of the road surface.

At present, the integrated road surface detection equipment also has the following problems to varying degrees: the damage location technology only uses GPS or only uses the mileage controller, which has the disadvantages of inaccurate GPS positioning and ignoring the overall situation of mileage control; the detection device and the vehicle body are not integrated. Design, it is difficult to ignore the impact of the vibration of the vehicle body or detection device on the detection results during driving

[0004] In view of the above reasons, although a variety of automatic pavement detection equipment based on image processing has come out, its application in actual production practice is still very limited, and there is still a lot of room for research in this field.

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