一种倒车防碰撞系统的设计与实现  

Design and Implementation of a Reversing Anti-collision System

作　　者：张安然 

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《压电与声光》2014年第4期608-611,616,共5页Piezoelectrics & Acoustooptics

摘　　要：倒车防碰撞系统是一种辅助汽车泊车装置。系统由超声波收发电路、回波放大电路、语音提示电路、数码显示、报警及温度补偿电路组成。该文对系统的硬件电路及软件程序进行了研究,设计了系统各硬件的电路图及主要软件工作流程。在硬件部分中,控制芯片选用STC11F02E单片机;采用API8108A语音芯片设计语音提示系统;利用DS18B20温度传感器测取环境温度,实现测距的温度补偿;采用两片74LS164串并转换芯片实现5片数码管的实时显示。软件部分对测距及显示等程序进行了重点介绍。最后对系统进行测试验证了系统的准确性及可靠性,说明系统具有一定的实用价值。The reversing collision avoidance system is a kind of auxiliary car parking device. The system consists of ultrasonic transceiver circuit, signal amplification circuit, voice prompt circuit, digital display mode, and alarm and temperature compensation circuit. The hardware circuit and software program of the system were studied in this pa- per, and the hardware system design and software work flow were designed. We selected STCllF02E single-chip microcomputer as the control chip of the hardware,API8108A voice chip was used to design the voice prompt sys- tem, DS18B20 temperature sensor was used to measure the temperature and realize temperature compensation of the ranging, two pieces of 74LS164 series-parallel conversion chip were used to realize real-time display of 5-piece digital tubes. The ranging and display programs were mainly introduced. The system was tested to verify the accuracy and reliability. The results showed that the system had a certain practical application.

关 键 词：倒车系统 超声波测距 语音提示 温度补偿 

分 类 号：TN919.64[电子电信—通信与信息系统]