The Application of Lock-in Amplifier in Weak Signal Detection

被引：2
|
作者：
Zhang, Jiatian [1 ]
Liu, Gang [1 ]
机构：
[1] Xian Shiyou Univ, Minist Educ, Key Lab Photoelect Gas & Oil Logging & Detecting, Xian 710065, Shaanxi, Peoples R China
来源：
MEMS, NANO AND SMART SYSTEMS, PTS 1-6 | 2012年 / 403-408卷
关键词：
lock-in amplifier; noise; weak signal detection;
D O I：
10.4028/www.scientific.net/AMR.403-408.2650
中图分类号：
TP18 [人工智能理论];
学科分类号：
081104 ; 0812 ; 0835 ; 1405 ;
摘要：
The paper introduces the lock-in amplifier, the basic concept of weak signal detection, and analyzes its application in weak electric signal detection. The results show that: lock-in amplifier has a very strong resistance to noise. Compared to band-pass filter, the output signal is not amplify input signal, but amplify the AC signal and turn it into DC signal.
引用
收藏
页码：2650 / 2653
页数：4
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