| The main development direction of automotive technology is electrification andintelligent in recent years. And the main idea is making the automobile from passivesubject turns to active subject for improving intelligent and safety of the automobiledriving. There are lots of slope roads and turning sections in the western mountainroad of China, then a great many of traffic accidents result in research of drivingsafety in the mountain road. The Early-warning System as an active safety system, itcan make prediction of the automobile driving to warn the driver takingcorresponding measures by monitoring traffic environment and automobile operatingconditions and forecast the process of vehicle will appear in the downhill drivingcondition. Based on the automobile intelligent, the driving safety is improved, resultin the reduction of mountainous traffic accidents availably.This paper based on the automobile mountainous driving dynamics model of thevehicle-road coupling， built the Early-warning model. From the analysis of themodel to determine the parameters and put forward a pre-warning rule and designscheme. This paper mainly uses TMS320LF2407A Digital Signal Processor as thecontroller chip to the pre-warning system, and makes a design of hardware circuit andprint circuit board.The system according to some of the test vehicle running state parameters, andcombining with vehicles in front of the road parameter calculation vehicle currentoperating safety quantitative values and its change trend, predict vehicle safety thepossibility of accident happening size, according to security warning algorithm toselect the corresponding alarm way warning. Is a guarantee of vehicle driving safetyactive safety system, in the dangerous early warning comes before the driver, make ithave enough time to take corresponding measures to minimize risk will, in order toimprove the safety of the mountain road car driving purpose, to safeguard the people’sproperty and personal safety is very important. |
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