A COST-EFFECTIVE AND ACCURATE ELECTRICAL IMPEDANCE MEASUREMENT CIRCUIT DESIGN FOR SENSORS

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International Journal on Smart Sensing and Intelligent Systems

Professor Subhas Chandra Mukhopadhyay

Exeley Inc. (New York)

Subject: Computational Science & Engineering , Engineering, Electrical & Electronic

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eISSN: 1178-5608

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VOLUME 9 , ISSUE 2 (June 2016) > List of articles

A COST-EFFECTIVE AND ACCURATE ELECTRICAL IMPEDANCE MEASUREMENT CIRCUIT DESIGN FOR SENSORS

Ciaran Doyle * / Dr Daniel Riordan * / Dr Joseph Walsh *

Keywords : bias, calibration, accuracy, precision, drift, Kelvin 4-wire circuit, Anderson loop.

Citation Information : International Journal on Smart Sensing and Intelligent Systems. Volume 9, Issue 2, Pages 509-525, DOI: https://doi.org/10.21307/ijssis-2017-881

License : (CC BY-NC-ND 4.0)

Received Date : 03-February-2016 / Accepted: 31-March-2016 / Published Online: 01-June-2016

ARTICLE

ABSTRACT

A circuit design with bespoke control software is described which has delivered precision in electrical impedance measurements of ~ 10ppm, after calibration. It is low-cost and applicable to jobs such as direct measurement using a sensor whose resistance changes with some physical quantity of interest; calibration at end of line in the production of such sensors; or calibration of equipment which may be out of warranty. It was developed using resistance temperature detectors (RTDs).

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REFERENCES

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