Research on Small Signal Amplification Circuit of Downhole Instrument

DOI

10.2991/citcs.2012.128How to use a DOI?

Keywords

Microvolt signal; Signal amplifier circuit; Resistance strain sensor; AD8552; Drilling engineering

Abstract

In order to acquire the real-time work of underground drill, promote the security and the reliability, it is necessary to effectively measure the drilling engineering parameter of drilling pressure, torque and side pressure etc. It uses the resistance strain sensor as a converter. The microvolt signal amplifier circuit is designed through analyzing the output signal of the resistance strain sensor. The design is applied with high-precision and rail-to-rail OP AD8552 as the core chip in the microvolt signal amplifier circuit. Through experimental test, it is obtained with experimental data of amplifier circuit. Moreover, the data are processed and analyzed using MATLAB software. The signal gain of the whole circuit is as high as 80dB, and the circuit has strong anti-interference ability and high temperature resist. The amplification to the signal above 1'V is good, which is satisfied with the parameter test system of drilling engineering.

Copyright

© 2012, 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  - Xin Lai
AU  - Chunpu Wang
AU  - Liang Ge
PY  - 2012/11
DA  - 2012/11
TI  - Research on Small Signal Amplification Circuit of Downhole Instrument
BT  - Proceedings of the 2012 National Conference on Information Technology and Computer Science
PB  - Atlantis Press
SP  - 498
EP  - 501
SN  - 1951-6851
UR  - https://doi.org/10.2991/citcs.2012.128
DO  - 10.2991/citcs.2012.128
ID  - Lai2012/11
ER  -