Accurate distance measurement by an autonomous ultrasonic system combining time-of-flight and phase-shift methods

被引：84

作者：

Gueuning, FE ^{[1
]}

Varlan, M ^{[1
]}

Eugene, CE ^{[1
]}

Dupuis, P ^{[1
]}

机构：

[1] Univ Catholique Louvain, Lab Elect Instrumentat, B-1348 Louvain, Belgium

来源：

IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT | 1997年 / 46卷 / 06期

关键词：

acoustic correlator; acoustic distance measurement; acoustic signal processing; algorithm; delay estimation; phase detection;

D O I：

10.1109/19.668260

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：

This paper presents an efficient algorithm for distance measurement, combining both the pulse time-of-flight method and the CW phase-shift method. It copes with a low-rate sampling technique allowed by the limited bandwidth of two ultrasonic transducers working in air at 30 kHz and with modest software resources of autonomous devices. The measuring system was implemented and tested on a compact Motorola MC68HC16-based platform, with a minimum of attached hardware. Experimental results show an accuracy better than 1 mm for a poor reflecting target at a distance of about 1 m.

引用

页码：1236 / 1240

页数：5

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