Portable Snow and Ice Sensing Devices for Pavement

Abstract

The invention provides a portable ice and snow sensing device for pavement, which includes a container, a sensing unit and a measuring unit; the sensing unit is an optical fiber collimator distributed on the inner wall of the container; the measuring unit includes a light source, a photoelectric converter and Signal processing module; the laser emitted by the light source is incident on the optical fiber collimator on the light emitting side, penetrates the medium to be measured in the container, is received by the optical fiber collimator on the light receiving side, is converted into an electrical signal by a photoelectric converter, and is sent to the signal processing module; The signal processing module measures the light intensity change to solve the thickness of the medium to be measured according to the difference in the light transmission absorption loss of different media and the refractive loss caused by the different refractive index when the laser passes through the medium to be tested, and at the same time distinguishes different media forms. The invention has the advantages of simple structure, small occupied space, low manufacturing cost, high degree of identification of physical states of ice, snow and water, and strong ability to measure the thickness of ice and snow.

Description

technical field [0001] The invention belongs to the field of photoelectric sensing and monitoring, and in particular relates to a portable ice and snow sensing device for pavement. Background technique [0002] In winter, the temperature is low, and it is easy to snow, or the road surface may freeze. The coverage of ice and snow will greatly reduce the friction coefficient of the road surface, which will bring great safety hazards to various vehicles. If the snow and icing conditions on the pavement can be detected in time and fed back to the pavement manager, countermeasures can be taken in advance to reduce the occurrence of safety accidents. [0003] At present, there are already some mature products for road surface ice and snow monitoring in foreign countries. Monitor road water accumulation and icing phenomena in different invisible spectral segments; the gun-type infrared temperature icing sensor developed by Wahl Equipment Company of the United States obtains icing...

AI Technical Summary

Problems solved by technology

However, the research on ice and snow monitoring on pavement is very imperfect, and there are very few practical application products

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