基于MSP430单片机的倒车雷达设计（毕业学术论文设计）.doc

PAGE 基于MSP430单片机的倒车雷达设计 摘要:随着我国汽车产业的高速发展，尤其是近两三年我国开始进入私家车时代，汽车电子产业成了新的增长点，汽车电子产品的高利润和市场广阔性备受商家关注，印象和防盗器就是明证。近两年来，倒车雷达成了商家的电子新爱，众多生产防盗器的厂家纷纷涉足倒车雷达。 倒车雷达全称为“倒车防撞雷达”，是汽车泊车安全辅助装置，能以声音或者更为直观的显示告知驾驶员周围障碍物的情况，解除了驾驶员泊车和启动车辆时前后左右探视所引起的困扰，并帮助驾驶员扫除视野的死角和视线模糊的缺陷。 本文详细介绍了一种基于MSP430单片机的超声波脉冲测距预警倒车雷达系统。该系统以空气中超声波的传播速度为确定条件，利用反射超声波测量待测距离。并且描述了系统研制的理论基础，超声波传感器等部分的电路设计以及使用了性能优良的单片机对系统起到了积极的作用。 论文概述了超声波检测的发展及原理，介绍了超声波传感器的原理以及特性，并且在此基础上提出了系统的总体构成。针对测距系统发射、接受、检测、多路控制、显示部分的总体设计方案进行了论证。 关键词:倒车雷达;MSP430单片机;超声波测距。 The Design of Car Parking Sensor Based on MSP430 Chip Abstract: With the development of Chinas automobile industry to tell, especially in the past two or three years entered the private car of the era, automotive electronics industry has become a new growth point, automobile electronic products and market a broad high-margin business of much attention, impressions, and anti-theft device is proof. The past two years, reversing radar became the new love of electronic business, many manufacturers have produced anti-theft device involved reversing radar. Parking sensor is called reverse collision avoidance radar, is secure car parking assist device, capable of voice or a more intuitive display of obstacles around the situation told the driver to lift the driver start the vehicle parking and access around, problems arising and to help the driver dead livestock and blurred vision defects. This paper describes the MSP430 microcontroller based ultrasonic pulse ranging reversing early-warning radar system. The system is the propagation velocity of ultrasonic wave in the air to determine the conditions under test using reflected ultrasonic distance measurement. And describes the theoretical basis of system development, ultrasonic sensors and other parts of the circuit design and the use of the excellent performance of the SCM system has played a positive role. Paper outlines the. development of ultrasonic testing and the principle, introduced the principle and the characte