超声波倒车雷达系统毕业论文.docVIP

摘要 超声波汽车倒车雷达系统是一种能够实时显示车后障碍物状况的汽车倒车辅助装置。随着汽车的迅速增加，停车难已经是一个不争的事实，倒车雷达就是为解决这类问题而设计的。在现实生活中应用十分广泛。本文根据声波在空气中可定向发射和反射的原理，以超声波换能器为接口部件，应用单片机技术与CAN总线网络技术设计了一套倒车雷达系统。 本文介绍设计了一种先进的基于CAN总线网络和超声测距的汽车超声蝇眼系统，用于汽车低速防撞和预警。障碍物的测量以AT89C51单片机作为微控制器，采用Φ15的超声波换能器TCT40-10F1（T发射）和TCT40-10S1（R接收）Ultrasonic vehicle reversing radar system is an vehicle reversing aid advice,it can display the obstacle follow car in real time.With the rapid increase in car, parking is difficult alreaday become an indisputable fact, parking radar is designed to address these issues.It is widely used in real life. This article based on the principle of the sound waves launch orientable and reflection in the air,utilice the ultrasonic transducer as the interface components,application of microcontroller technology and CAN bus network technology designed a set of reverse radar systems. This article describes the design of an advanced network based on CAN bus, car and Ultrasonic Measurement of the fly,s eye ultrasound system for automotive low-speed collision and early warning.Measurement of obstacles to AT89C51 microcontroller as the microcontroller, using Φ15 ultrasonic transducer TCT40-10F1 (T launches) and TCT40-10S1 (R receiver) to achieve ultrasonic ranging.Through the CAN bus network, the measured data to PC, PC to achieve with the obstacle position display and alarm. PHILIPS companies CAN controller SJA1000, transceiver use PCA82C250.In this system, CAN bus, the operating mode is BasicCAN mode. Paper outlines the development of ultrasonic probes and the basic principles.Obstacles to the measurement of reversing radar system, CAN bus communication, LCD display, alarm and other parts of the design is analyzed.From the systems performance requirements, utility requirements, the composition of the system, principles and methods of testing software and hardware to choose and design.Article detailed the hardware design process, and the system software design process flow chart. Key words:SJA1000 CAN network