Backward multi-wavelength infrared spectroscopy non-contact pavement condition detection method

Abstract

The invention relates to a backward multi-wavelength infrared spectroscopy non-contact pavement condition detection method, and belongs to the technical field of infrared spectroscopy application. The backward multi-wavelength infrared spectroscopy non-contact pavement condition detection method realizes non-contact measurement of the pavement condition on the basis of the infrared spectral characteristics of water, ice and snow and comprises the following steps: firstly illuminating a target object by using screened infrared light with three different wavelengths through a divergent lens to form an illuminating surface; then receiving light signals reflected, absorbed and diffused through the illuminating surface, and judging the pavement condition according to the size relationship of the light signals; and finally computing the thickness of a coverage object by utilizing a corredponding thickness computation formula so as to detect the pavement condition. Compared with a contact detection method, the backward multi-wavelength infrared spectroscopy non-contact pavement condition detection method disclosed by the invention has the advantages of large actual detection area, more real data and more direct target, thereby getting more accurate detection result.

Description

technical field [0001] The invention relates to a backward multi-wavelength infrared spectrum non-contact road condition detection method, which belongs to the technical field of infrared spectrum application. Background technique [0002] Most of the existing pavement state detection methods are contact detection methods embedded in the road surface, which are complicated to use, and the detection device needs to be cut into the road surface and buried in the ground. Once buried, it cannot be taken out. It is difficult to maintain and damage the road surface, which limits the condition of the contact pavement. The application and promotion of detection methods; during the contact detection process, due to the long-term pressure of the detection device, it will sink into the road surface, which will cause deviations in the measurement results and cannot detect the real road surface conditions. The contact road surface condition detection method detects the road surface and th...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a backward multi-wavelength infrared spectrum non-contact road surface condition detection method to solve the problem that the current contact road surface condition detection method cannot truly reflect the contact surface of the locomotive because it detects the substances on the road surface and the bottom surface of the covering status problem

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