A high-accuracy electronic pressure transducer with a wide temperature range and single iteration temperature calibration

Authors:
M. J. Burke
Affiliations:
Dept. of Electronic and Electrical Engineering, Trinity College Dublin, Dublin 2, Ireland
Venue:
WSEAS Transactions on Circuits and Systems
Year:
2010

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Abstract

This article reports the development of a solid state pressure transducer for use in the measurement of blood pressure. It is intended to act as a replacement gauge for the mercury and aneroid manometers used in conventional sphygmomanometers. It measures pressure in the range 0-300mmHg (0-40kPa) with a resolution of 1mmHg (0.13kPa) and an accuracy of ±1mmHg (±0.13kPa) which is displayed on a liquid crystal display. It operates from a 9V PP3 battery over a temperature range of -20 to +60°C. It is fully temperature compensated and can be calibrated in a single temperature cycle.