Research on the sensor calibration of pressure transmitter based on the least square method

Author

Zhiping Wang ; Aidong Xu ; Kai Wang ; Yan Song ; Bingjun Yan

Author_Institution

Shenyang Inst. of Autom., Shenyang, China

fYear

2014

fDate

19-23 Oct. 2014

Firstpage

389

Lastpage

392

Abstract

The accuracy of capacitance pressure sensor is easily disturbed by work environment. In order to improve the accuracy of pressure sensor, the paper researches on the sensor calibration of pressure transmitter based on the least square method. The measurement circuit is designed to convert the output of sensor from the capacitance value to the cycle value. Working quadric surface is fitted with the value of environmental temperature, the output of pressure sensor and setting pressure by the least square method. The pressure transmitters can accurately measure at different temperatures by the experiment.

Keywords

calibration; capacitive sensors; least squares approximations; pressure sensors; capacitance pressure sensor; least square method; measurement accuracy; measurement circuit; pressure transmitter; sensor calibration; working quadric surface; Abstracts; Accuracy; Instruments; Pressure measurement; Transmitters; pressure transmitter; sensor calibration; the least square method;

fLanguage

English

Publisher

ieee

Conference_Titel

Signal Processing (ICSP), 2014 12th International Conference on

Conference_Location

Hangzhou

ISSN

2164-5221

Print_ISBN

978-1-4799-2188-1

Type

conf

DOI

10.1109/ICOSP.2014.7015034

Filename

7015034