Expressway agglomerate fog area road condition visualization device based on microwave radar

Abstract

The invention aims at providing an expressway agglomerate fog area road condition visualization device based on microwave radar. A radar signal containing information, such as speed, distance and azimuth, of a preceding vehicle on a fog area road is collected by using an LFMCW linear frequency-modulated radar sensor; and the radar signal is processed by using a DSP signal operation processing circuit to extract parameters, such as speed, distance and azimuth, of the preceding vehicle; the parameters are displayed on a fog area road condition display screen of a centre console to help a driverto judge a vehicle running position situation in the fog area; and therefore, the driver adopts a reasonable driving operation measure to drive the vehicle through the fog area safely. Meanwhile, whena vehicle distance is less than a safety vehicle distance, a sound alarm circuit produces a long-voice spaced alarming sound and a sharp alarming sound to warn the driver of that the distance betweenthe vehicle and the preceding vehicle is in a warning area and a dangerous area; and therefore, rear-end collision is prevented. According to the expressway agglomerate fog area road condition visualization device based on microwave radar, the driver can master fog area road conditions and is clear like driving the vehicle in a non-fog area; and therefore, accidents caused by agglomerate fog or other heavy fog weathers are avoided so that life and economic loss of personnel on the vehicle can be avoided.

Description

technical field [0001] The invention relates to the technical field of road traffic safety, in particular to a microwave radar-based road condition visualization device in cloudy and foggy areas of expressways. Background technique [0002] With the rapid growth of our country's national economy, the construction of highways has also achieved unprecedented development. However, while the expressway has become an important factor to promote the rapid development of the national economy, the ever-increasing incidence and death rate of expressway traffic accidents have also brought many adverse effects on the safety of people's lives and property and the stable development of the social economy. Among them, the cloud fog known as the "mobile killer" is one of the chief culprits of the major traffic accidents, which will cause huge economic and property losses to the country and the people every year. Fog is regional and difficult to forecast, and it is difficult for vehicles t...

AI Technical Summary

Problems solved by technology

The disadvantage of the first preventive measure is that the cameras installed at equal intervals on both sides of the expressway or in the middle isolation zone may not be exactly located in the randomly occurring cloud fog area, so the cloud cloud cannot be detected in time

In addition, vehicles that suddenly enter the foggy area during driving will be unable to see the road ahead due to low visibility, so traffic accidents such as rear-end collisions are likely to occur

The shortcoming of the second preventive measure is that vehicles entering the foggy area, due to low visibility, the distance between horizontal vehicles cannot be seen clearly, therefore, traffic accidents such as collisions are also prone to occur during driving

As far as the current market is concerned, there are no related technical products or methods, so it is fully innovative and practical

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