The Study of the Motorcycle Exhaust Gas Detection Based on Two-Phase Lock-In Amplifier

被引：0
|
作者：
Chen, Hongyan [1 ]
Huang, Conghai [1 ]
Zhen, Yongzhen [1 ]
机构：
[1] China Jiliang Univ Hangzhou, Mech & Elect Res Inst, Hangzhou, Zhejiang, Peoples R China
来源：
2010 INTERNATIONAL CONFERENCE ON INFORMATION, ELECTRONIC AND COMPUTER SCIENCE, VOLS 1-3 | 2010年
关键词：
lock-in amplifier; weak-signal; AD630;
D O I：
暂无
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
In the use of laser absorption spectroscopy detection technology for motorcycle exhaust systems, the optical signal with useful information is weak signal which level is mV and submerged completely in thousands of times the noise and interference in the background. In this paper, an AD630 is used as the multiplier of two-phase lock-in amplifier to achieve the weak signal. Motorcycle exhaust gas detection experiments show that the two-phase lock-in amplifier can achieve the useful weak signal with high accuracy and good stability.
引用
收藏
页码：530 / 534
页数：5
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