作　　者： ; ; (李德锋）;

机构地区： 五邑大学信息工程学院

出　　处： 《现代电子技术》 2011年第22期138-140,共3页

摘　　要： 提出了一种基于车载MP3播放机-SH252的倒车雷达设计方案,并介绍了系统的软硬件设计思路。系统采用EM78P153单片机作为倒车雷达数据采集部分,采用超声波探测方式测距。在倒车时,倒车雷达会自动启动,并在EM78P153的控制下,由装置于车尾保险杠上的探头发送超声波信号,当遇到障碍物时,产生回波信号,探头接收到回波信号后经控制器进行数据处理并计算出车体与障碍物之间的实际距离,然后将数据发送到车载MP3播放机上进行距离显示和语音同步提示,为驾驶员提供报警提示,提高驾驶的安全性。 A design scheme of car backward sensors based on a vehicle MP3 player SH252 is proposed.The idea for system software and hardware designs is introduced.The microcontroller EM78P153 is adopted in this system as the data collector of car backward sensors.The ultrasonic detecting mode is used for ranging.When the car is in the backward mode,the backward sensors are automatically activated,and the probes mounted on the rear bumper send ultrasonic signals under the control of EM78P153.When facing with an obstacle,an echo signal appears.The echo signal received by probes is processed,and the actual distance between the rear bumper and obstacles is calculated by MCU.The collected data is sent to the car MP3 player.The distance is displayed and the synchronic voice prompt is provided for the driver.It greatly improves the driving security.

关 键 词： 车载 播放机 超声波测距 语音同步提示

领　　域： [电子电信] [电子电信]