| Because of western mountainous traffic accidents happened frequently,people began to improve the awareness of traffic safety,and do the safety research of vehicle driving on mountainous road,making vehicle's safety gradually turned to active safety from passive safety.With the development of the automotive industry and emerging technologies,automotive electronics and intelligent has become the main development direction of automotive technical.As a new active safety system,Early-warning system is not only enrich the car's intelligence but also improve its safety.If predicting driving car's security situation is possible,it can effectively reduce the number of traffic accidents by timely warning drivers to take appropriate measures before dangerous arrives.Based on this idea,this paper presents the research and development of the pre-warning system of car driving on mountainous road.Based on the analysis of the safety degree model of car driving on mountainous road,to determine the parameters of predicting the driving car's safety degree,and at the same time to put forward a pre-warning rule and design scheme. This paper mainly uses TMS320LF2407A Digital Signal Processor as the controller chip to the pre-warning system,and makes a design of hardware circuit and print circuit board.This system forecasts the likelihood of vehicle accidents according the current running safety degree quantitative value and its change trend which are calculated by vehicle some running parameters and road parameters.Choose a different alarm mode according to the different security pre-warning algorithm.Pre-warning system is an active safety system that can guarantee vehicles' driving safe. It can minimize the traffic accidents by timely warning the driver to have enough time to take appropriate measures before dangerous arrives,in order to increase the vehicle driving safety.It has a momentous significance to guarantee people's property and personal safety. |
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