Method and system for measuring road surface evenness at any vehicle speed

The invention provides a method and a system for measuring pavement flatness at any vehicle speed. The method comprises the steps that upper computer software obtains sampling data from an acquisition card FIFO through a communication interface, and sampling recombination of the data with the specif...

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Bibliographic Details
Main Authors ZHANG YUN, XIE ZHANGQING, MAN FEI, MAO LIJIAN
Format Patent
LanguageChinese
English
Published 02.09.2022
Subjects
MEASURING
MEASURING ANGLES
MEASURING AREAS
MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
MEASURING LENGTH, THICKNESS OR SIMILAR LINEARDIMENSIONS
PHYSICS
TESTING
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Summary:The invention provides a method and a system for measuring pavement flatness at any vehicle speed. The method comprises the steps that upper computer software obtains sampling data from an acquisition card FIFO through a communication interface, and sampling recombination of the data with the specified distance length is carried out through the numerical value p of a counter; processing the sampled and recombined data to obtain an average acceleration and an average laser value within a specified distance length, counting n for the pulse number p of an encoder, and obtaining the time t = n * 1/f for advancing the current specified distance length; accumulating the output data of the corresponding result segment length, removing the direct current component of the aavage, and carrying out the secondary integration of t on the aavage to obtain a jolt value; subtracting the bumping value from the laser ranging value to obtain an accurate road elevation value; and calculating a road surface flatness value accordi
Bibliography:Application Number: CN202210602436