基于C8051F020单片机的超声测距仪设计

Design of an Ultrasonic Distance Measurement Based on C8051F020

提出了一种基于C8051F020单片机的超声测距仪的设计方法。采用了检测峰值时间的方法,将回波的峰值时间作为超声传播时间并辅助以软件修正,提高了测距的精度;在计算上,考虑了温度对声速的影响,取得了比较好的效果。

This paper presents a kind of an ultrasonic distance measurement based on C8051F020. This design used the method of testing time of the peak value, at the same time, using the echoed peak value time as the ultrasomic transmitting time which was revised by software. As a result, the measurement precision was improved to a great extent. The system also gets a good result with consideration of the influence of air temperature.