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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Main Authors | , , , |
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Format | Patent |
Language | Chinese English |
Published |
02.09.2022
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Subjects | |
Online Access | Get full text |
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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 |
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Bibliography: | Application Number: CN202210602436 |