Gravitational acceleration sensor based road surface flatness detection method

Abstract

The invention relates to a gravitational acceleration sensor based road surface flatness detection method which comprises the following steps: determining the detection vehicle speed, a gravitational acceleration sensor and a sampling frequency; using different models of test vehicles to run on roads with different road surface flatness to obtain gravitational acceleration values of the gravitational acceleration sensor; performing Fourier transform on the collected gravitational acceleration values to obtain power spectral density; establishing a fitting model of the power spectral density of same model of test vehicles and IRI (international roughness index); performing general applicability tests on the fitting model of the same model of test vehicles to obtain a fitting model of the power spectral density of the different models of test vehicles and the IRI; performing general applicability tests on the fitting model of the power spectral density of the different models of test vehicles and the IRI; and according to a universal fitting model and the collected gravitational acceleration values, performing road surface flatness detection. Compared with the prior art, the road surface flatness detection method based on the gravitational acceleration values can solve the problems that a laser flatness detection vehicle in the prior art is expensive and is complicated in detection process.

Description

Technical field [0001] The invention relates to a detection method, in particular to a road surface smoothness detection method based on a gravity acceleration sensor. Background technique [0002] With the huge growth of highway construction, highway maintenance and management are becoming increasingly important. In 2010, the speed of maintenance of large and medium-sized highways in my country has exceeded the speed of construction, and a large number of domestic highways will also enter the maintenance period of large and medium-sized highways. Highway road maintenance and management are facing unprecedented challenges. At this time, it is very important to provide scientific and reasonable road performance testing methods. [0003] At present, in evaluating pavement performance indicators, the International Roughness Index (IRI) is one of the most widely used indicators. The World Bank calculates IRI with a quarter-vehicle model. The vehicle travels on the road at a specified...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a road surface roughness detection method based on a gravity acceleration sensor in order to overcome the above-mentioned defects in the prior art, which is used to solve the problem that the current laser flatness detection vehicle is expensive and the detection process is cumbersome.

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