Design Of Car Reversing Aidsystem

Automobile Reversing Radar (‘ARR’) is a protection system which appearedin the condition of that the cars are scratched easily, even some of the accidentshappen when drivers reverse, for the reason of that the current highway, street,parking lots and garages are getting more crowded, and the drivers are unable tosee obstacles behind the vehicle because of the existence of visual blind spots,aimed at prevent a car crash when reversing. The reversing radar system, whichcan recognize the barrier at the back of car when the vehicles reverse at a lowspeed, and is capable of measuring the distance between the vehicle and obstacles,warned the drivers to brake at the way of sound and light, before the collisionoccurred. The design analyzes how the ultrasonic measure distance and what theproblem of the other automobile reversing radars which have appeared at homeand abroad are, from the perspective of research and analysis. Then introducingthe most simple and practical way at present to make the ARR, that is, the ARRbased in the GM8101chip which produced in ChengDuGuoTeng MicroelectronicsCompany. The chip is integrated highly, can function as a whole system by onlyconnecting to external ultrasonic sensor and power device, and does not requiresoftware programming. Meanwhile, as the research about realizing the vehicleelectrical network is becoming more and more popular today, a program that thedata of the ARR is transferred in a new kind of bus called as XY-CN. A modulardesign concept was used at the process of designing the system, it simplifies thedebugging workload. Ultimately, hardware design, software design and systemdebugging about the ARR was completed very well.