Method and device for acquiring expressway agglomerate fog visibility

A highway and visibility technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problems of highway traffic safety hazards, difficulty in forecasting and forecasting highway fog, and long accumulation time, etc., to achieve The effect of reducing hidden dangers of road traffic safety
CN112461799AActive Publication Date: 2021-03-09北京心中有数科技有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
北京心中有数科技有限公司
Publication Date
2021-03-09

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Abstract

The invention provides a method and device for acquiring expressway agglomerate fog visibility, and the method comprises the steps: obtaining meteorological observation data of a target region on an expressway; inputting the obtained meteorological observation data into an aerosol particle model obtained through machine learning in advance to obtain each aerosol particle attribute parameter valuecontained in the aerosol particles in the target area; based on the attribute parameter values of the aerosol particles, obtaining a total extinction coefficient of the aerosol particles; and calculating the agglomerate fog visibility of the target area based on the total extinction coefficient of the aerosol particles and the relative humidity of the target area. The potential safety hazard of expressway traffic can be reduced.
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Description

technical field

[0001] The invention relates to the technical field of road traffic visibility recognition, in particular to a method and a device for obtaining the visibility of expressway cloud fog. Background technique

[0002] In a local range of tens of meters to several kilometers along the expressway, affected by the microclimate environment, the ground radiation cools down, making the air close to the ground colder, and the saturation specific humidity decreases, resulting in the condensation of water vapor and the formation of clusters of fog and clusters. The visibility outside the fog is relatively good, and the visibility inside the fog is extremely low. After the vehicle enters the fog generated on the expressway, the visibility drops sharply, which is extremely harmful to the road traffic safety of the expressway and easily leads to major traffic accidents. However, due to the strong regionality, small coverage, long accumulation time, easy drift, and strong su...

Claims

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