Multipoint weak signal acquisition based on orthogonal vector of the lock-in amplifier
Authors
Chao Sun, You-Ping Chen, Gang Zhang, Feng Wang, Guang-Sen Liu, Jian-Jun Ding
Corresponding Author
Chao Sun
Available Online December 2016.
- DOI
- 10.2991/eeeis-16.2017.123How to use a DOI?
- Keywords
- Weak signal; Quadrature vector type; Lock-in amplifier
- Abstract
In the optical fiber sensor signals, most of them are weak. Generally, they are converted to weak current or voltage through the sensor unit. But the signal is too weak to measure because of the sensing unit background noise, circuit noise and external interference noise which is stronger than the useful signal. It is unable to detect the weak signal only by the amplification because amplification of the measured signal also amplified the noise. In this paper, a multi point acquisition system of weak signal is designed, which is based on the quadrature vector type lock-in amplifier, it can detect the weak signal effectively and effectively.
- Copyright
- © 2017, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - Chao Sun AU - You-Ping Chen AU - Gang Zhang AU - Feng Wang AU - Guang-Sen Liu AU - Jian-Jun Ding PY - 2016/12 DA - 2016/12 TI - Multipoint weak signal acquisition based on orthogonal vector of the lock-in amplifier BT - Proceedings of the 2nd Annual International Conference on Electronics, Electrical Engineering and Information Science (EEEIS 2016) PB - Atlantis Press SP - 1006 EP - 1011 SN - 2352-5401 UR - https://doi.org/10.2991/eeeis-16.2017.123 DO - 10.2991/eeeis-16.2017.123 ID - Sun2016/12 ER -