Detection method of road-surface evenness

Abstract

The invention discloses a detection method of road-surface evenness; in the measurement process, an accelerometer is utilized to detect relative displacement of a laser ranging device owning to road surface bumping, a three-dimensional gyroscope is utilized to detect the inclined angle of the laser ranging device owning to road surface bumping, and a three-dimensional synthesis attitude angle is synthesized under a two-directional coordinate system according to the attitude angles along the three directions; the relative displacement, the three-dimensional synthesis attitude angle and the distance measured by the laser ranging device are obtained, and vertical distance between the laser ranging device and the road surface is calculated; according to the detection density, all vertical distances are obtained, and a difference value with a standard reference distance is obtained, thereby obtaining a profile curve and the road-surface evenness. The method eliminates the problems that thealtitude of the laser ranging device is inclined owning to road surface bumping and data loses efficiency caused by position deviation, and solves the problem that the road-surface evenness can not be detected under the low-speed (<25km / h) condition, thereby improving the detection efficiency, reducing the life cycle cost of highroads and improving the service life of the highroads.

Description

technical field [0001] The invention relates to the technical field of road maintenance, in particular to a method for detecting road surface roughness. Background technique [0002] In the early stage of highway maintenance, road surface roughness is one of the important indicators for highway technical condition evaluation and road maintenance analysis. Rapid and accurate detection of smoothness is of great significance to road maintenance management, for example, to improve the service life of roads, Reduce road maintenance costs, etc. [0003] Since the 1970s, western countries have carried out a lot of research work on the rapid detection of road surface roughness, and proposed a series of rapid detection methods and related devices and equipment for road surface roughness, including vehicle-mounted bump accumulators. In order to establish the data relationship between various testing equipment, the World Bank also proposed the International Roughness Index (IRI: inter...

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Problems solved by technology

[0007] In view of this, the present invention is to provide a road surface smoothness detection method to solve the above-mentioned road surface measurement process. During rapid acceleration, rapid deceleration, and high-speed cornering, the laser flatness detection device will form a certain angle with the road surface and the angle In constant change, inaccurate detection data, unmeasured issues

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