A seismometer phase-sensitive detection circuit design

DOI

10.2991/ic3me-15.2015.204How to use a DOI?

Keywords

Capacitance sensor. Phase sensitive demodulation. Operational amplifier.

Abstract

Phase-sensitive detection circuit tests signals according to the correlation of the reference signal and the input signal. The noise is eliminated by the independence between the reference signal and the noise signal. The sensitivity of the detector is improved significantly by the suppression of the noise. In this work, a phase-sensitive detection circuit is designed for seismometer, which possesses the characteristics of low-input noise, variable-output gain and high sensitivity. The feasibility of this phase-sensitive detection circuit is verified by the Multisim and the signal-to-noise ratio is satisfactory.

Copyright

© 2015, 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/).

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TY  - CONF
AU  - Xuefeng Xing
AU  - Huan Liu
AU  - Shixue Lv
AU  - Guanyu Zhang
AU  - Yun Long
AU  - Junqiu Wang
PY  - 2015/08
DA  - 2015/08
TI  - A seismometer phase-sensitive detection circuit design
BT  - Proceedings of the 3rd International Conference on Material, Mechanical and Manufacturing Engineering
PB  - Atlantis Press
SP  - 1057
EP  - 1060
SN  - 2352-5401
UR  - https://doi.org/10.2991/ic3me-15.2015.204
DO  - 10.2991/ic3me-15.2015.204
ID  - Xing2015/08
ER  -