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Study on EMI Elimination and PLN Application in ELF Band for Romote Sensing with Electric Potentiometer  

Jang, Jin Soo (전남대학교 전자컴퓨터공학과)
Kim, Young Chul (전남대학교 전자컴퓨터공학과)
Publication Information
Smart Media Journal / v.4, no.1, 2015 , pp. 33-38 More about this Journal
Abstract
In this paper, we propose the methods not only to eliminate ELF(Extremely Low Frequency) EMI(Electro-Magnetic Interference) noice for extending recognition distance, but also to utilize the the PLN for detecting starting instance of a hand gesture using electric potential sensor. First, we measure strength of electric field generated in the smart devices such as TV and phone, and minimize EMI through efficient arrangement of the sensors. Meanwhile, we utilize the 60 Hz PLN to extract the starting point of hand gesture. Thereafter, we eliminate the PLN generated in the smart device and circuit of sensors. And then, we shield the sensors from an electric noise generated from devices. Finally, through analyzing the frequency components according to the gesture of target, we use the low pass filter and the Kalman filter for elimination of remaining electric noise. We analyze and evaluate the proposed ELF-band EMI eliminating method for non-contact remote sensing of the EPS(Electric Potential Sensor). Combined with a detecting technique of gesture starting point, the recognition distance for gestures has been proven to be extended to more than 3m, which is critical for real application.
Keywords
EPIC Sensor; Smart TV; ELF; Elimination of EMI; Kalman Filter;
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Times Cited By KSCI : 1  (Citation Analysis)
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1 Microsoft. "IT Trend 2012", www.msittrend.com. 2012년
2 C.J. Harland, T.D. Clark, and R.J. Prance, "Electric Potential Probes-New Directions in the Remote sensing of the Human Body," Measurement Science and Technology, No. 13 pp. 163-169, 2002
3 R.J. Rrance, S.T. Beardsmore-Rust, P. Watson, C.J. Harland, and H. Prance, "Remote Detection of Human Electrophysiological Signals Using Electric Potential Sensors," Applied Physics Letters, 93, 033906 (2008)   DOI
4 H.Prance, P. Watson, R.J. Prance, and S.T. Beardsmore-Rust, " Position and movement sensing at metre standoff distances using ambient electric Field," Measurement Science and Technology, No. 23, pp. 1-7, 2012
5 조정재, 김영철. "EPIC 센서를 이용한 Hand Tracking 및 Calibration 알고리즘", 한국스마트미디어학회 스마트 미디어 저널, 제9권, 제1호, 27-30쪽, 2013년
6 김광회. "EMI 및 EMI 필터", 한국과학기술연구원, 2007년
7 김세윤. "EMI 억제방안" 대한전기학회, 제38권, 제9호, 28-34쪽, 1989년
8 이채욱, 김신환, 우홍체, 오신범. "디지털 필터의 종류", 디지털 신호처리 및 필터 설계, 119-123쪽, 2008년
9 Poularikas A. D. "Analog Filter Approximations", The Handbook of Formulas and Tables for Signal Processing, pp. 225-229, 1999.
10 Greg Welch and Gary Bishop, "An Introduction to the Kalman Filter," University of North Carolina, Department of Computer Science, TR 95-041, 2002.
11 고혜선, 장희준, 한헌수, 최영우. "칼만필터의 예측오차 분산의 특징 개선을 통한 안정적 얼굴영역 추적 기법", 대한전자공학회 하계종합학술대회 논문집, 제27 권, 제1호, 1097-1100쪽, 2004년