Joint Faulting Three dimension Detection Method on Cement Concrete Pavement with Line structure Light

Abstract:

In order to realize the accurate detection of joint faulting on cement concrete pavement, a kind of three dimension detection method based on line structure light was proposed. The structured light emitted from laser irradiated vertically on the road and the charge coupled device（CCD） camera captured the beam which was formed by the pavement diffuse reflection, so as to realize the data acquisition. Then, the road three dimension information was calculated based on laser triangulation algorithm. According to the three dimension information data characteristics and the shape of cement concrete pavement joint faulting, the dense joint faulting value calculation method was proposed. The average value and maximum value of joint faulting were obtained. Experiment results show that 91% of the absolute error between three dimension method results and measurement results by ruler is within 2 mm.