摘要
根据声的发射、反射及传输理论推出并用实验验证了测距回波包络曲线的近似方程，据此提出了一种高精度超声波测距信号处理方法．介绍了以单片机实现该方法的超声测距系统，该系统在２．５～１２ｍ范围内测距误差不大于０．２５％．
Based on the theory of ultrasonic′s launching, reflecting and transmitting, an approximate equation descrbing the envelope of reflecting signal is derived and then verified experimentally.After that,a highaccuracy detection processing method is presented and a practical system realized with a 8051 single chip microcomputer is introduced.Distance measurement tests between 2.5 ～12 m show that its accuracy is satisfied.
出处
《厦门大学学报（自然科学版）》
CAS
CSCD
北大核心
1998年第4期507-512,共6页
Journal of Xiamen University：Natural Science
基金
国家863计划
关键词
超声波
测距仪
信号起伏
单片机
信号处理
Ultrasonic distance measurement,Signal fluctuation,Single chip microcomputer
