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基于超声波测距的倒车雷达系统设计

消耗积分:10 | 格式:rar | 大小:694 | 2010-12-17

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 介绍了以单片机为核心的倒车雷达系统,它利用超声波实现无接触测距。系统主要包括超声波发射接触以及温度测量电路,突出点是利用数字传感器DS18B20对温度进行测量,并利用声速与温度之间的校正公式对声速进行校正,提高了渡越时间的测量精度,进而提高了测量距离的准确度。适合测量的距离在5 m以下,可以满足倒车安全的要求。
Abstract:
 In this paper,the automobile-reversing rader system which uses the single chip as core is introduced.The system uses the ultrasound to realized distance measurement without contract.The system mainly includes the blast-off receiving and temperature measurement electric circuit.The temperature measurement circuit which uses a digital sensor DS18B20 is given.The accurate degree of distance is compeleted.This system is suited to mesure distance which below 5 meterses can meet the safety requestment of reversing a car.

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