Highway agglomerate fog early warning system and early warning method based on unmanned aerial vehicle and vehicle-highway cooperation

Abstract

The invention discloses a highway agglomerate fog early warning system and early warning method based on an unmanned aerial vehicle and vehicle-highway cooperation. The highway agglomerate fog early warning system comprises a UAV (unmanned aerial vehicle) monitoring system, a road side monitoring system, a geographical information system and a forecasting system. The UAV monitoring system comprises a UAV, a portable visibility meter and a video camera which are fixedly arranged on the UAV, and an airborne communication module communicated with the geographical information system. The road sidemonitoring system comprises a fixed visibility meter fixedly arranged at one side of the preset road section and in communication connection with the geographical information system. The forecastingsystem comprises a road side unit in communication connection with the geographical information system. The system realizes time-space monitoring of highway agglomerate fog in a large area based on the UAV and the vehicle-highway cooperation technology, and can carry out differential warning on individual vehicles in a separated road section and warning level manner, thereby greatly reducing operation risk under the highway agglomerate fog meteorological conditions and improving highway operation efficiency.

Description

technical field [0001] The invention relates to the technical field of intelligent transportation, in particular to an expressway fog early warning system and early warning method based on unmanned aircraft and vehicle-road coordination. Background technique [0002] Fog, as a natural phenomenon, has appeared on many highways in my country. Due to the appearance of fog, it will cause a sharp drop in driving visibility, which can easily lead to traffic accidents. The formation of cloud fog is closely related to the local microclimate environment. The daytime temperature of the expressway pavement is relatively high, and the temperature difference between day and night is large, which is conducive to the formation of fog. In addition, burning straw near the expressway in autumn will significantly increase pollutant particles, which may induce cloudy fog. The areas where rivers and reservoirs are located near expressways have high water vapor, which may also induce fog. In a...

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Problems solved by technology

There are some deficiencies in the above technical aspects: (1) It can only monitor the fog situation near the point where the detection equipment is located; (2) It can only monitor the severity of the fog (such as mist, medium fog, heavy fog), but cannot Determine the spatio-temporal coverage of the group fog; (3) After the group fog is detected, the traffic flow is often given an early warning through the display screen or the tweeter, without considering the time-spatial distribution characteristics of the group fog. Differentiated early warning for vehicles

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