Digital Calibration for Current-Loop Output of Piezoresistive Sensors

Abstract:

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The precision of piezoresistive sensors is low between wide temperature range .The conditioning result isn’t ideal by analog approaches. Also the efficiency is very low. To improve this condition , a digital approach is introduced. It coverts sensors’ analog signal to digital value, and then uses polynomial and coefficients stored in singlechip to correct the digital value. At last , the singlechip coverts corrected digital value to analog signal to output. Its conditioning principle and calibration process is also described. We realized 4-to-20mA-current-loop-output of piezoresistive sensors using this aprroch. Calibration results show this method is efficient and low cost.

Info:

Periodical:

Advanced Materials Research (Volumes 143-144)

Edited by:

H. Wang, B.J. Zhang, X.Z. Liu, D.Z. Luo, S.B. Zhong

Pages:

744-748

DOI:

10.4028/www.scientific.net/AMR.143-144.744

Citation:

C. Yan et al., "Digital Calibration for Current-Loop Output of Piezoresistive Sensors", Advanced Materials Research, Vols. 143-144, pp. 744-748, 2011

Online since:

October 2010

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Price:

$35.00

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