스위치드 커패시터를 이용한 동작 주파수에 무관한 정전용량 터치스위치

Title
스위치드 커패시터를 이용한 동작 주파수에 무관한 정전용량 터치스위치
Other Titles
Capacitive Touch Switch Regardless of Operating Frequency Using a Switched-Capacitor
Author(s)
성광수이무진
Keywords
Capacitive Touch Switch; Switched-Capacitor; The Number of Times Being Charged
Issue Date
201306
Publisher
한국조명.전기설비학회
Citation
조명.전기설비학회논문지, v.27, no.6, pp.88 - 94
Abstract
This paper proposes a capacitive touch switch using a switched-capacitor. The proposed method charges capacitance for measurement using the switched-capacitor until the voltage across the capacitance reaches a threshold voltage. As the proposed method uses the number of times being charged to measure the capacitance, the method has no relation with the operating frequency of the switched-capacitor. This paper also shows the quantization resolution of the proposed method is related to the capacitance in the switched-capacitor and the threshold voltage, i.e., the resolution is improved when the capacitance in the switched-capacitor is decreased and the threshold voltage is increased. Simulation result shows the method gives 31fF quantization resolution when the capacitance in the switched-capacitor is 50fF and threshold voltage is 80% of the supply voltage.
URI
http://hdl.handle.net/YU.REPOSITORY/29596
ISSN
1229-4691
Appears in Collections:
공과대학 > 전자공학과 > Articles
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