A low-cost dynamic range-finding device based on amplitude-modulated continuous ultrasonic wave

被引：20
|
作者：
Hua, H [1 ]
Wang, YT [1 ]
Yan, DY [1 ]
机构：
[1] Beijing Inst Technol, Dept Opt Engn, Beijing 100081, Peoples R China
来源：
IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 2002年 / 51卷 / 02期
关键词：
amplitude modulation; continuous ultrasonic wave; distance measurement; phase shift;
D O I：
10.1109/19.997838
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
A practical low-cost acoustic range-finding method is presented, which provides a high-speed and high-accuracy solution for distance measurement. It is based on the linear phase delay of the received signal, with respect to the transmitted signal caused by the distance between the transmitter and the receiver. A continuous ultrasonic signal amplitude modulated by a low-frequency acoustic signal is used. The accuracy can be up to 2 mm within 1.5 m and the dynamic data update rate can be up to 150 Hz. The design principles, hardware implementation, experimental results, and performance analysis are included.
引用
收藏
页码：362 / 367
页数：6
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