Laser three-dimensional digital road shape instrument

Abstract

The 3D digital laser road form instrument includes instrument vehicle, one viameter on one side of the lower part, one laser road surface damage state detecting instrument and one wheel track profiler in the back part. The viameter, the road surface damage state detecting instrument and the wheel track profiler are connected separately with the laser power source, mileometer and computerized measuring and controlling processor center. The viameter consists of two altimeters with shared beam; the road surface damage state detecting instrument consists of one multiple sheet light source to light the road surface in small angle and one arean array CCD image detector; and the wheel track profiler consists of one sheet light source to light the road surface in small angle and one arean array CCD image detector. The present invention can realize high speed detection to show the 3D digital structure of road surface quantitatively.

Description

A technical field [0001] The invention relates to a high-speed quantitative detection device for displaying road surface topography and three-dimensional digital cross-sectional structure, and for road driving quality and road condition, in particular to a laser three-dimensional digital road shape instrument. Two background technology [0002] In accordance with the international and national technical regulations on road surface condition detection and evaluation, it is required to regularly and efficiently provide the smoothness of the road surface that characterizes the quality of the road surface and the ruts, cracks, and potholes that represent the road surface condition without affecting normal traffic. Wait for the road surface to be damaged to correctly evaluate the road surface and guide maintenance. This is a technical problem that our country urgently needs to solve, and has not yet been successfully solved in the world. Most of the pavement detection technologi...

AI Technical Summary

Problems solved by technology

Most of the pavement detection technologies in our country still use manual or low-speed detection instruments, such as three-meter rulers, eight-wheel instruments to detect flatness, and cross-sectional rulers to detect ruts. Most of the pavement damage detection still uses manual field surveys. A variety of high-speed detection instruments with a certain level of intelligence have been developed, such as bump accumulators, laser level gauges based on elevation measurement, and multi-probe rutting instruments, but most of them are still single-function, expensive and still far from satisfactory high-speed Quantitative highway, real-time detection requirements

For example, although the flatness meter is relatively mature, the vibration of the car body cannot be completely and effectively corrected by the acceleration sensor. The time-series subcontracting of the measurement data cannot strictly correspond to the road piles. The difficulty of not being able to cover the entire lane, especially for pavement cracks, potholes and other pavement damage so far there is no effective measuring instrument, even the most advanced pavement disease investigation instrument in the world based on the whole road surface photography, due to the large amount of data, It is necessary to configure a high-performance information processing center for post-processing. The efficiency is very low, and it can only give records of cracks, but it is powerless for deformation damage. Give the pavement condition report, but cannot give the three-dimensional shape and quantitative cross-sectional data

It is even more impossible to mark the measurement data according to the mileage of road piles to achieve corresponding guidance and maintenance with the road surface

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