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Low value capacitance measurement system for the application of monitoring human body

Arshad, Atika and Tasnim, Rumana and Zahirul Alam, A. H. M. and Khan, Sheroz (2016) Low value capacitance measurement system for the application of monitoring human body. ARPN Journal of Engineering and Applied Sciences, 11 (1). pp. 327-330. ISSN 1819-6608

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Abstract

The core focus of this work is to design and develop a reliable capacitance sensing system for measuring very small capacitive changes at low frequencies. The sensing system is applicable in monitoring and characterizing human body movement. The interface circuit measures very small capacitive variation. Some capacitive values have been fixed and the produced capacitive changes have been measured for validating the possibility to monitor and detect the presence of human bodies. A variation in capacitance causes a variation in the output voltage. Due to the variation of output voltages, the presence or absence of the human body can be detected. Primary simulation results show that the measurement of little capacitance variation using an interface circuit is precise and linear. With the presence of a human body in the area right above the sensor, a capacitance variation as well as output voltage can be observed.

Item Type: Article (Journal)
Additional Information: 4575/54597
Uncontrolled Keywords: Capacitance; Capacitance-to-voltage converter; Frequency-to-voltage converter; Human body; Timer
Subjects: T Technology > TA Engineering (General). Civil engineering (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7800 Electronics. Computer engineering. Computer hardware. Photoelectronic devices > TK7885 Computer engineering
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): Kulliyyah of Engineering
Kulliyyah of Engineering > Department of Electrical and Computer Engineering
Depositing User: Dr AHM Zahirul Alam
Date Deposited: 13 Apr 2017 08:50
Last Modified: 13 Apr 2017 08:50
URI: http://irep.iium.edu.my/id/eprint/54597

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