Design Validation and Performance Investigation of Signal Conditioning Circuit for Capacitive Sensor

The paper presents the implementation details of an oscillator based signal conditioning circuit for capacitive sensor. The transfer function model of the circuit has been developed. The model of the signal conditioning circuit is validated by calibrating the circuit using precession capacitors. The...

Full description

Saved in:
Bibliographic Details
Published in2019 IEEE 5th International Conference for Convergence in Technology (I2CT) pp. 1 - 6
Main Authors Das, Nipan, Kalita, Kunjalata, Boruah, P. K., Sarma, Utpal
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.03.2019
Subjects
capacitive sensor
relative humidity
signal conditioning circuit
uncertainty
Online AccessGet full text

Cover

More Information
Summary:The paper presents the implementation details of an oscillator based signal conditioning circuit for capacitive sensor. The transfer function model of the circuit has been developed. The model of the signal conditioning circuit is validated by calibrating the circuit using precession capacitors. The performance of the circuit is investigated using capacitive RH sensor at standard humidity levels. The standard humidity levels are generated using saturated binary salt solutions prepared as per OIML R121. The measurement uncertainty, accuracy and sensitivity of the system are presented in the paper.
DOI:10.1109/I2CT45611.2019.9033825