Research On Small Signal Magnify-Chain Circuit Based On Pressure Bridge

DOI

10.2991/icmmct-16.2016.115How to use a DOI?

Keywords

small signal; meter amplifier; auto-return-to-zero technology; common mode rejection ratio

Abstract

Weak small signal acquisition is particularly important in electronic design and data acquisition. Effective processing of small signals must be magnified, while magnifying small signals can produce interference magnification and cause errors. In order to solve the interference and detune in small signal magnification, based on the scrutiny of small signal features, this paper suggests the adoption of precision meter amplifier and auto-return-to-zero technology to magnify the weak signal. The precision meter amplifier can realize the higher common mode rejection ratio, and the auto-return-to-zero technology can reduce the detune errors. Accordingly, the both combination can realize the stable and effective magnification of 110 times of the weak signals. The test results indicated that under TINA-TI, the simulation was carried out so that the millivolt grade signal could be magnified to several volts steadily and the interference and errors can be suppressed effectively. This design is of certain practicality and reference values, and provides a kind of new thinking and designing method for studying small signal magnifying chain circuit.

Copyright

© 2016, 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  - Jian Huang
AU  - Hui Fan
PY  - 2016/03
DA  - 2016/03
TI  - Research On Small Signal Magnify-Chain Circuit Based On Pressure Bridge
BT  - Proceedings of the 2016 4th International Conference on Machinery, Materials and Computing Technology
PB  - Atlantis Press
SP  - 570
EP  - 573
SN  - 2352-5401
UR  - https://doi.org/10.2991/icmmct-16.2016.115
DO  - 10.2991/icmmct-16.2016.115
ID  - Huang2016/03
ER  -