Based On Embedded Visual Reverse Radar System Design And Realization

With the development of the technology of the electronic,auto,embed and information in recent years,the embed system has been widely applied in each field.Thanks to the progress of the computer,communication and automation,especially the improvement of the embed technology,selecting a embed operating system will be a very effective thing that will improve the capability and the empolder rate,which will supply a support platform for the modernization and informatization of the industry.In connection with the current situation of reversing radar,the paper puts forward a design of modules which is based on ARM9 processor named ARM920T and the Linux control system, which has all the functions including:data gather module of vidio,LCD module,ultrasonic send/incept module,alarm module of sound etc.The system can complete the functions of judgement,measure distance,gather video,audio alert and so on.The reversing radar breaks through in terms of veracity,observabitity,stability.In order to produce the ultrasound the system adopts the device of ultrasonic transducer which has the feature of echoing when the ultrasonic touching the barrier.The reflected wave will be taken over by CSB40R,then ARM can test the time from sending to receiving,from which the controller can measure the distance from barrier to car.At the same time the pickup camera captures the scene of the back of the car based on the serial data of USB transfer;and then the driver can watch the states of the back situation through the LCD.according to the judgement the controller can also alarm the driver of the distance from the barrier to the car with the dangerous circumstances.If the controller system is used effectively,it can better serve our daly life,for example it can reduce the traffic accidents drastically.The practicability and the actualization are emphasized in the research course.With respect to hardwares,we choose the common ones.And we also have done much work in improving and verifying the gordian technique.The practical results show that the reversing radar system with accuracy test and dependable performance will play an important role in reversing without barrier.