文档介绍：超声波倒车雷达
摘要
随着我国经济飞速发展,越来越多的人拥有了自己的汽车,同时由泊车和倒车所引发的事故也越来越多。这些事故常常给驾驶员带来许多的麻烦,因此,有助于驾驶员泊车和倒车的倒车雷达应运而生。
倒车雷达全称叫“倒车防撞雷达”,也叫“泊车辅助装置”,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俩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。本文介绍了以AT89S52单片机为核心的一种低成本、高精度、微型化,并有数字显示和声光报警功能的倒车雷达系统,该倒车雷达根据超声波测距原理研制,采用温度补偿技术、开机自检技术和优化的软硬件技术,将测得的结果送至数码管显示,同时进行三级声光报警。驾驶员只需坐在驾驶室就能做到心里有数,极大的提高了泊车和倒车时的安全和效率。
关键词:倒车雷达、超声波、单片机AT89S52
英语翻译:
Abstract
With the rapid development of China's economy, more and more people have their own car, while parking and reversing caused by the accident is also increasing. These incidents are often caused a lot of trouble to the driver, therefore, help the driver reverse parking and reversing radar came into being.
Parking sensor full name is "reversing anti-collision radar," also known as "parking aids" is a safe car parking assist device, capable of voice or a more intuitive display of obstacles around the situation told the driver to lift the driver both parking and start the car around, when the problems caused by the visit and to help the driver to remove the dead, and blurred vision defects. This paper introduces the AT89S52 microcontroller as the core of a low-cost, high accuracy, miniaturization, and a digital display and sound and light alarm function parking sensor system, reversing radar, the principle of ultrasonic distance measurement based on the development, use of pensation, the boot self-test hardware and software technology and optimization technology, the measured results sent to the digital display, three levels of sound and light alarm simultaneously. Can do just sitting in the cab driver had an idea greatly improved the parking and reversing the safety and efficiency.
Keywords: reversing radar, ultrasound, MCU AT89S52

目录
引言…………………………………………………………………5
第一章倒车雷达工作原理
单片机的发展及其应用----------------------------8
超声波测距--------------------------------------9
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