Digital phase sensitivity detection method for faint signal in a noise circumstance

被引：0

作者：

Zhao, WQ ^{[1
]}

Tan, JB ^{[1
]}

Luo, J ^{[1
]}

Liu, YQ ^{[1
]}

机构：

[1] Harbin Inst Technol, Harbin 150001, Peoples R China

来源：

PROCEEDINGS OF THE FIRST INTERNATIONAL SYMPOSIUM ON INSTRUMENTATION SCIENCE AND TECHNOLOGY | 1999年

关键词：

amplitude modulation circuit; phase sensitivity detection circuit; inductance sensor;

D O I：

暂无

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

On the basis of the analysis of various factors affecting the precision of the analogue phase sensitivity detection, principle of digital phase sensitivity detection is presented. Then this method is applied to amplitude modulation measurement circuit of inductance sensor, thus the circuit design is simplified and the reliability is enhanced. Tt is testified by the experiments that the reliability of the amplitude modulation measurement circuit of inductance sensor employing the digital phase sensitivity detection may reach nanometre level.

引用

页码：257 / 261

页数：5