文档介绍：摘要
倒车雷达又称泊车辅助系统,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起动车辆时前后左右探视所引起的困扰,并帮助驾驶员扫除了视野死角和视线模糊的缺陷,提高了安全性。一般由超声波传感器(俗称探头)、控制器和显示器等部分组成,现在市场上的倒车雷达大多采用超声波测距原理,驾驶者在倒车时,启动倒车雷达,在控制器的控制下,由装置于车尾保险杠上的探头发送超声波,遇到障碍物,产生回波信号,传感器接收到回波信号后经控制器进行数据处理,判断出障碍物的位置,由显示器显示距离并发出警示信号,得到及时警示,从而使驾驶者倒车时做到心中有数,使倒车变得更轻松。倒车雷达的提示方式可分为液晶、语言和声音三种;接收方式有无线传输和有线传输等。本方案采用语音提示的方式,本文介绍了以SPCE061A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。利用SPCE061A 单片机所具备的单芯片语音功能,外接三个超声波测距模组,组成一个示例的倒车雷达系统,语音提示报警(~)范围内的障碍物。
关键词:倒车雷达; 超声波;单片机
Abstract
Parking sensor, also known as parking assist system, the vehicle parking assist device security, voice, or be able to tell the driver a more intuitive display of the situation around the obstacle, to lift the drivers start parking and vehicle access around, caused bytrouble, and help the driver to remove the dead zone and blurred vision, and improves the by the ultrasonic sensors (commonly known as probes), controls and displays and ponents, parking sensor on the market today are mostly using ultrasonic ranging principle, the driver in reversing start reversing radar, under the control of the controller, the device wasrear bumper send ultrasonic probe encountered obstacles, generate echo signal, the sensor receives the echo signal data processing by the controller, determine the location of obstructions, and issued by the display shows the distance warning signaltimely warning, so be aware of drivers when reversing to make backup for reversing radar can be divided into liquid crystal, three kinds of language and sound; to receive a wireless transmission and wired way program uses voice prompt manner, this paper, the SPCE061A MCU as the core of a low-cost, high accuracy, miniaturization, and a digital display and sound and light alarm function reversing radar of available SPCE061A single-chip microcontroller voice, add three ultrasonic ranging modules to form a sample of reversing radar system, voice al