Title:Design car reversing aid systems based on ultrasonic detections
Abstract
With the rapid development of economy of you country,more and more people hace owed their cars, at the same time, more and more accidents occur because of paring and reversing.the car reserving aid system which can help drivers parking is invented.
The car reserving aid systm is also called "parking auxiliary unit ",it is the automobile safe parking auxiliary unit,which can use sound or a more direct demonstration to show the driver the obstacle situation around.Thus relieve the difficulty of looking ahead and back when parking or starting vehicles,and help the drive to eliminate the dead angle of the field of vision and the flaw of sight.This paper introduces a low cost,high-accuracy,micro-miniaturzation,digital display and acousto-optics alarm intelligent parking radar that based on MCU AT89C2051.The back-draft radar develops on the basis of uitrasonic ranging principle.It uses the temperature compensation technology,the opening machine self-checking technology and the optimized software technology,the result obtained will be delivered to the digital tube and showed.At the same time,the three levels of acusto-optics alarm will work, The driver only has to sit in the cab and can know fairly well. Thus the driving security and efficiency enhance enormously.