Device and method for guaranteeing rainy-day driving safety at mountain-wind crossing road section

Abstract

The invention discloses a device and method for guaranteeing rainy-day driving safety at a mountain-wind crossing road section. The device comprises a laser rainfall detector, a wind-speed and wind-direction detector, a data processor, an emitting and receiving antenna and an LED variable-information message plate. The method specifically comprises the steps that meteorological data of the mountain-wind crossing road section of a highway in a mountain area is collected; a short time window is taken as an updating cycle; divided monitoring sections are established according to different road line types; meteorological data along the route of the divided monitoring sections is collected in real time, wherein the meteorological data includes rainfall, wind speeds and wind direction angle parameters; means of the meteorological data in the short time window are calculated; one this basis, safety representation values of the divided monitoring sections are calculated; a driving safety speed-limiting value is solved based on the safety representation values; safety speed-limiting schemes are formulated; and speed-limiting information is released in combination with the variable-information message plate in real time.

Description

technical field [0001] The invention relates to the field of traffic safety on expressways in mountainous areas, in particular to a device and method for ensuring driving safety in rainy days on mountain wind crossing sections. Background technique [0002] At present, the driving safety management system for mountainous highways under severe weather conditions is all monitoring and decision-making for the entire highway, and the speed limit plan is based on the results of meteorological data collection for a long time (such as 24 hours). Decision-making, in this way, the update of meteorological data information is slow, the timeliness is poor, and it is not timely, which may cause the formulated speed limit plan to be no longer suitable for the current weather conditions. At the same time, its early warning of the wind impact on the mountain wind crossing section only relies on the status of the windsock, without a clear quantification, and the effect is not good. Not onl...

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Problems solved by technology

[0002] At present, the driving safety management system for mountainous highways under severe weather conditions is all monitoring and decision-making for the entire highway, and the speed limit plan is based on the results of meteorological data collection for a long time (such as 24 hours). Decision-making, in this way, the update of meteorological data information is slow, the timeliness is poor, and it is not timely, which may cause the formulated speed limit plan to be no longer suitable for the current weather conditions

At the same time, its early warning of the wind impact on the mountain wind crossing section only relies on the status of the windsock, without a clear quantification, and the effect is not good

Not only that, the impact of the wind-rain dual effect on driving safety under the rainfall environment of the mountain wind crossing section has not been considered in the formulation of the safe speed limit plan, so the driving safety of the mountain wind crossing section under rainy weather is low

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