<abstract xmlns="http://www.w3.org/1999/xhtml"><p>A digital moisture measuring instrument based on phase angle measuring technique with porous silicon (PSi) or porous alumina (PA) as capacitive moisture sensor is proposed. The proposed technique can measure digitally the phase angle change of capacitive impedance of porous silicon or porous alumina sensor due to change in moisture concentration in terms of clock pulses. Analysis shows that the proposed circuit leads to higher precision by minimizing the errors caused by parasitic earth capacitance as well as offset voltage in the circuit. Simulation and experimental results are reported to confirm the effectiveness of the technique.</p></abstract>

A digital moisture measuring instrument based on phase angle measuring technique with porous silicon (PSi) or porous alumina (PA) as capacitive moisture sensor is proposed. The proposed technique can measure digitally the phase angle change of capacitive impedance of porous silicon or porous alumina sensor due to change in moisture concentration in terms of clock pulses. Analysis shows that the proposed circuit leads to higher precision by minimizing the errors caused by parasitic earth capacitance as well as offset voltage in the circuit. Simulation and experimental results are reported to confirm the effectiveness of the technique.

A Sensitive Digital Moisture Detector For Nanostructured Thin Film Sensor

Indian Institute of Engineering Science and Technology (IIEST), Shibpur

International Journal on Smart Sensing and Intelligent Systems

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

{"article-title":"A Sensitive Digital Moisture Detector For Nanostructured Thin Film Sensor"}

A digital moisture measuring instrument based on phase angle measuring technique with porous silicon (PSi) or porous alumina (PA) as capacitive moisture sensor...

A Sensitive Digital Moisture Detector For Nanostructured Thin Film Sensor

Published Online: Sep 01, 2014

Page range: 1059 - 1076

Received: May 16, 2014

Accepted: Sep 01, 2014

DOI: https://doi.org/10.21307/ijssis-2017-694

Keywords
Porous sensors, moisture sensing, digital phase angle measurement, detection circuit

© 2014 Tarikul Islam et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

A Sensitive Digital Moisture Detector For Nanostructured Thin Film Sensor

Published Online: Sep 01, 2014

Page range: 1059 - 1076

Received: May 16, 2014

Accepted: Sep 01, 2014

DOI: https://doi.org/10.21307/ijssis-2017-694

KeywordsPorous sensors, moisture sensing, digital phase angle measurement, detection circuit

© 2014 Tarikul Islam et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Porous sensors, moisture sensing, digital phase angle measurement, detection circuit