A bridge circuit for temperature drift cancellation

Author

Matsuno, Masaru ; Adachi, Shinobu ; Nakayama, Masakatsu ; Watanabe, Kenzo

Author_Institution

Yazaki Meter Corp., Tenryu, Japan

Volume

42

Issue

4

fYear

1993

fDate

8/1/1993 12:00:00 AM

Firstpage

870

Lastpage

872

Abstract

A bridge circuit is developed for cancelling temperature drifts of resistive sensors. It consists basically of two half bridges with a common reference arm, each one followed by a differential amplifier. The gains of the amplifiers are adjusted such that the half-bridge output voltages due to temperature variation of sensors cancel each other. This scheme allows a compensation for a large mismatch in the temperature sensitivity of sensors without degrading their inherent sensitivities. Experimental results are presented to demonstrate the validity of this concept

Keywords

bridge circuits; compensation; differential amplifiers; electric sensing devices; signal processing equipment; bridge circuit; compensation; differential amplifier; half bridges; mismatch; reference arm; resistive sensors; temperature drift cancellation; temperature sensitivity; temperature variation; Bridge circuits; Delay effects; Electrical resistance measurement; Laser radar; Printed circuits; Pulse measurements; Radar applications; Temperature distribution; Temperature sensors; Voltage;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.234501

Filename

234501