Road surface roughness tester and road surface roughness measurement method

Abstract

The invention provides a road surface evenness detector and a road surface evenness measuring method. The road surface evenness detector comprises a two-axis acceleration sensor, a laser distance measuring sensor, a mileage counting sensor, a gyroscope and a processor. The two-axis acceleration sensor is used for measuring the first acceleration in the direction perpendicular to the road surface evenness detector and the second acceleration in the direction parallel to the road surface evenness detector. The laser distance measuring sensor is used for measuring the distance between the road surface evenness detector and a road surface to be detected. The mileage counting sensor is used for measuring the horizontal displacement of the road surface evenness detector. The gyroscope is used for measuring the real-time rotation angle between the road surface evenness detector and the horizontal road surface. The processor is used for processing the measuring values and obtaining the road surface evenness of the road surface to be detected. According to the technical scheme, errors caused by rotational motion of a chassis of a detected vehicle are avoided, and the precision of the road surface evenness detector is improved.

Description

technical field [0001] The invention relates to a road surface smoothness measurement technology, in particular to a road surface smoothness detector and a road surface smoothness measurement method. Background technique [0002] Road surface roughness (Road Surface Roughness) refers to the deviation value of the longitudinal unevenness of the road surface, which is one of the important technical indicators for evaluating the quality of the road surface. The uneven road surface will increase the driving resistance and cause the vehicle to generate additional vibration, which not only affects the speed and safety of driving, but also affects the smoothness of driving and the comfort of passengers. Therefore, it is necessary to test the smoothness of the road surface and maintain a certain level of smoothness. [0003] At present, the traditional road surface meter is mainly used to measure the smoothness of the road surface. The traditional road surface meter includes: singl...

AI Technical Summary

Problems solved by technology

[0004] Since the use of traditional pavement instruments to measure road surface flatness is based on the assumption that the chassis of the car only moves in the vertical direction, but in fact the vibration of the automobile chassis is not only a process of vertical vibration, but also a process of rotation. Therefore, the use of traditional pavement instruments to measure When the road surface roughness accuracy is measured, the measurement accuracy is affected by the rotational movement of the chassis of the car, and the accuracy is low

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