A seismometer phase-sensitive detection circuit design
- 10.2991/ic3me-15.2015.204How to use a DOI?
- Capacitance sensor. Phase sensitive demodulation. Operational amplifier.
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.
- © 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/).
Cite this article
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 -