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Efficient capacitance sensing for wireless health monitoring system.

This paper presents a low power capacitance to voltage converter (CVC) circuit using two differential amplifier circuits, two Schottky rectifier diodes constructed in symmetrical manner and combined with instrumentation amplifier circuits. The differential capacitance to voltage simulation work has...

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Main Authors: Che Mustapha, Nurul Arfah, Alam, A. H. M. Zahirul, Khan, Sheroz, Azman, Amelia Wong
Format: Article
Language:English
English
Published: IIUM Journal Publication 2016
Subjects:
TK Electrical engineering. Electronics Nuclear engineering
Online Access:http://irep.iium.edu.my/53419/1/609-3201-1-PB.pdf
http://irep.iium.edu.my/53419/7/53419_Efficient%20capacitance%20sensing%20for%20wireless%20health%20monitoring%20system_WoS.pdf
http://irep.iium.edu.my/53419/
http://journals.iium.edu.my/ejournal/index.php/iiumej/index
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spelling my.iium.irep.53419 http://irep.iium.edu.my/53419/ Efficient capacitance sensing for wireless health monitoring system. Che Mustapha, Nurul Arfah Alam, A. H. M. Zahirul Khan, Sheroz Azman, Amelia Wong TK Electrical engineering. Electronics Nuclear engineering This paper presents a low power capacitance to voltage converter (CVC) circuit using two differential amplifier circuits, two Schottky rectifier diodes constructed in symmetrical manner and combined with instrumentation amplifier circuits. The differential capacitance to voltage simulation work has been realized with cheap discrete components. Combination energy from solar, vibration and heat is expected to be used to source the capacitance circuit. Constant dc voltage of 3 V has been used to source the CVC circuit in this work. It is found by the simulation, the converter circuit consumes 3.9 mW of total power, operates at 40 kHz using 400 mV excitation signal. The circuit is able to detect changes of capacitance from 4 – 12.5 pF using reference capacitance of 5 pF. Sensitivity of 0.132 mV for 1 fF capacitance change has been observed in the circuit. This circuit is suitable for wireless health monitoring system. IIUM Journal Publication 2016-11 Article PeerReviewed application/pdf en http://irep.iium.edu.my/53419/1/609-3201-1-PB.pdf application/pdf en http://irep.iium.edu.my/53419/7/53419_Efficient%20capacitance%20sensing%20for%20wireless%20health%20monitoring%20system_WoS.pdf Che Mustapha, Nurul Arfah and Alam, A. H. M. Zahirul and Khan, Sheroz and Azman, Amelia Wong (2016) Efficient capacitance sensing for wireless health monitoring system. IIUM Engineering Journal, 17 (2). pp. 21-29. ISSN 1511-788X http://journals.iium.edu.my/ejournal/index.php/iiumej/index
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic TK Electrical engineering. Electronics Nuclear engineering
spellingShingle TK Electrical engineering. Electronics Nuclear engineering
Che Mustapha, Nurul Arfah
Alam, A. H. M. Zahirul
Khan, Sheroz
Azman, Amelia Wong
Efficient capacitance sensing for wireless health monitoring system.
description This paper presents a low power capacitance to voltage converter (CVC) circuit using two differential amplifier circuits, two Schottky rectifier diodes constructed in symmetrical manner and combined with instrumentation amplifier circuits. The differential capacitance to voltage simulation work has been realized with cheap discrete components. Combination energy from solar, vibration and heat is expected to be used to source the capacitance circuit. Constant dc voltage of 3 V has been used to source the CVC circuit in this work. It is found by the simulation, the converter circuit consumes 3.9 mW of total power, operates at 40 kHz using 400 mV excitation signal. The circuit is able to detect changes of capacitance from 4 – 12.5 pF using reference capacitance of 5 pF. Sensitivity of 0.132 mV for 1 fF capacitance change has been observed in the circuit. This circuit is suitable for wireless health monitoring system.
format Article
author Che Mustapha, Nurul Arfah
Alam, A. H. M. Zahirul
Khan, Sheroz
Azman, Amelia Wong
author_facet Che Mustapha, Nurul Arfah
Alam, A. H. M. Zahirul
Khan, Sheroz
Azman, Amelia Wong
author_sort Che Mustapha, Nurul Arfah
title Efficient capacitance sensing for wireless health monitoring system.
title_short Efficient capacitance sensing for wireless health monitoring system.
title_full Efficient capacitance sensing for wireless health monitoring system.
title_fullStr Efficient capacitance sensing for wireless health monitoring system.
title_full_unstemmed Efficient capacitance sensing for wireless health monitoring system.
title_sort efficient capacitance sensing for wireless health monitoring system.
publisher IIUM Journal Publication
publishDate 2016
url http://irep.iium.edu.my/53419/1/609-3201-1-PB.pdf
http://irep.iium.edu.my/53419/7/53419_Efficient%20capacitance%20sensing%20for%20wireless%20health%20monitoring%20system_WoS.pdf
http://irep.iium.edu.my/53419/
http://journals.iium.edu.my/ejournal/index.php/iiumej/index
_version_ 1643616927901286400
score 13.211869

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