Automobile rear-end collision prevention early warning method and system

Abstract

The invention discloses an automobile rear-end collision prevention early warning method and system. The system comprises a wireless communication dedicated short range communication (DSRC) device arranged at a roadside, and a vehicle-mounted wireless communication device, a data acquisition unit and a vehicle-mounted terminal which are installed on a vehicle, wherein the data acquisition unit is internally provided with a data acquisition module, a GPS module and an acceleration sensor. Through the DSRC device, wireless communication interaction between vehicles and between vehicles and roads is realized. The vehicle-mounted terminal calculates a safety distance between a vehicle and a front vehicle by use of a minimum safety distance model based on vehicle-road cooperation, an actual distance between the vehicle and the front vehicle is calculated through position information, whether a read-end collision risk exists is determined, if the read-end collision risk exists, a risk prompt is displayed on an interface of the vehicle-mounted terminal, and an alarm is given through sound. According to the invention, the cost of the read-end collision prevention early warning system is reduced, and the early warning accuracy is improved. The system has the advantages of low cost, small volume, accurate early warning and the like, thereby being applied to various road conditions.

Description

technical field [0001] The invention belongs to the technical field of traffic vehicle safety, and in particular relates to an early warning method and system for preventing rear-end collisions of vehicles. Background technique [0002] At present, in the field of traditional automobile safety, the more common vehicle anti-rear collision technology mainly uses microwave radar and camera technology. The cost of the equipment is high, and it is difficult to install on general vehicles, and only by measuring the distance and speed without considering the acceleration information and road surface information of the vehicle in front, so that the early warning of the equipment has a certain lag, and it cannot be applied to other road conditions, such as wet Road surface, ice and snow road surface, etc. Contents of the invention [0003] In view of the defects or deficiencies in the above-mentioned prior art, the object of the present invention is to provide a method and system ...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of traditional automobile safety, the more common vehicle anti-rear collision technology mainly uses microwave radar and camera technology. The cost of the equipment is high, and it is difficult to install on general vehicles, and only by measuring the distance and speed without considering the acceleration information and road surface information of the vehicle in front, so that the early warning of the equipment has a certain lag, and it cannot be applied to other road conditions, such as wet Road surface, ice and snow road surface, etc.

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