Vehicle early warning system for merging area of expressway based on continuous geomagnetic detector

Abstract

The invention provides a vehicle safety early warning system for the merging area of an expressway, comprising a vehicle information acquisition system, an information analysis system, and an early warning information publishing system. The system combines the entry time, the vehicle speed and the vehicle length information of each vehicle traveling in a ramp and the outermost lane of a main roadand soon entering the merging area of the expressway acquired in real time by continuously arranged vehicle geomagnetic detectors, and carries out the conflict judgment and the reasonable guidance oneach vehicle approaching the main road traffic. Therefore, the traffic accidents in the merging area of the expressway caused by a short sight distance or the state limit of large vehicles can be effectively avoided.

Description

technical field [0001] The invention belongs to the field of traffic safety control, and in particular relates to a vehicle early warning system in the merge area of ​​an expressway based on a continuous geomagnetic detector, which aims at early warning of the conflict state in the merge area and controls the vehicles on the ramp by processing real-time traffic information. A system for avoiding conflicts. Background technique [0002] With the continuous increase of the number of automobiles and the total amount of passengers and freight on expressways in my country in recent years, the incidence of traffic accidents on expressways is also increasing year by year. The merging area where the freeway ramp merges is the high-frequency area where conflicts and traffic accidents occur on the expressway. According to statistics, more than 30% of the traffic accidents on the expressway in my country occur at the entrance of the ramp. Conflicts between main roads and ramp vehicles ...

AI Technical Summary

Problems solved by technology

[0003] In the existing domestic patents, the research on the early warning system of the expressway merge area is not comprehensive enough

Most studies have not considered the influence of the body length of merging vehicles on vehicle merging, but in reality, it is much more difficult for some large vehicles driving on expressways to merge into the main line of traffic than small vehicles

At the same time, some of the existing studies did not judge the conflict status of vehicles on the main road and ramp vehicles, but only provided the traffic flow information on the main road and ramp to the vehicle driver, and the driver still needs to judge the merging situation

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