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Current behavior analysis of the single supply differential capacitive sensing

Che Mustapha, Nurul Arfah and Alam, A. H. M. Zahirul and Khan, Sheroz and Azman, Amelia Wong (2017) Current behavior analysis of the single supply differential capacitive sensing. In: 14th Student Conference on Research and Development, IEEE (SCOReD2016), 13th-14th December 2016, Kuala Lumpur.

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Abstract

Differential capacitive sensing technique has gained popularity in capacitance measuring system due to its high symmetrical implementation, easy to be implemented using discrete components and has a characteristic of high linearity in its system. However, very few work has reported on the differential CVC system that is able to operate at a high frequency operation especially when using discrete method. In this work, a differential CVC is proposed using discrete single supply, suitable for energy harvesting and WSN application. The method has emphasised on the rectifier current behavior analysis of the capacitive sensing circuit. Using this method, sensitivity of 0.04933 mV per 1 ƒF capacitance change is achievable with low power consumption of 3.83 mW. The proposed method has also shown high linearity of R-squared value 0.99788 between 5 and 9.5 pF capacitance change. Finally, the recorded DC output voltage is in the range of 1.6505 to 1.8725 V output with working frequency of 200 kHz operation.

Item Type: Conference or Workshop Item (Plenary Papers)
Additional Information: 7837/54484
Uncontrolled Keywords: Capacitance;Capacitive sensors;Conferences;Radio frequency;Research and development;Schottky diodes;capacitance measurement system;current analysis;cvc;differential capacitance sensing
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Dr AHM Zahirul Alam
Date Deposited: 08 Feb 2017 09:25
Last Modified: 12 Oct 2017 15:36
URI: http://irep.iium.edu.my/id/eprint/54484

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