Key Technologies Reaserch Of Intelligent Vehicle Based On MC9S12XS128

As the rapid development of automobile electronic and robots intelligence technology,theresearch on intelligent vehicle has become a hot spot in the field of automatic control. Thepopularization of intelligence cars is a irresistable trend. Intelligence vehicle is a kind ofhigh_tech comprehensive systems,covered environment exploration,programmed decision_making automatic drive.Its use refers to many disciplines,such as auto_control,patternrecognition, computer vision,sensor technology,vehicle engineering,electronic,single_chipMicrocomputer.Based on the7thFreescale Cup Intelligent Car Racing,this paper designs a kind ofintelligent car who can draw its route information and auto_drive by use of MC9S12XS128and CCD. The key technologies of the whole car’s design are route recognition and controlalgorithm of motor and servomotor.This paper provides a new algorithm based on the whiteline between two black ones,getting the information accurately.This algorithm has brokendown the mindset of route recognition according with black line and solve the problemsuccessfully caused by the mindset.The optimized image processing algorithm reduce theinformation in an image,improved stability and accuracy.The H bridge,paper designed,ismore excellent in the performance of accelaration or speed reduction.It can make theintelligent car travel fast and steady to apply effective control algorithm,including PID andFuzzy,to control motor and servomotor.Based on the results of tests,a best algorithm, whichcan control car travel fast and steady, is picked up through car test.This paper also designs forthe auxiliary circuit such as human_computer information exchange modal,date storagemodal, Electronic password lock and so on..