The traditional detection methods are easily affected by noise. It is difficult to extract the useful signal from the power traveling wave which is submerged in a lot of noise. A method using digital lock-in amplifier is proposed for detecting the power traveling wave signal. The basic principles of the lock-in amplifier are studied. Virtual instrument language LabVIEW is used to design the digital lock-in amplifier. It is able to extract the corresponding frequency components of the power traveling wave signal. As the front panel and the flow sheet of the digital lock-in amplifier are presented, the design of each module is introduced in detail. The experimental research on detecting signals containing noise and not containing noise are carried out, respectively. The results of experiment show that the presented digital lock-in amplifier can accurately extract the corresponding frequency components of the power traveling wave signal. Moreover, with the increase of the noise amplitude, the root mean square error of the output signals varies little. The presented digital lock-in amplifier is able to cancel the effect of noise. Therefore, it is a powerful tool to detect and extract the power traveling wave signal.
목차
Abstract 1. Introduction 2. The Basic Principle of Lock-in Amplifier 3. Digital Lock-in Amplifier Design 3.1 The Digital Lock-in Amplifier Front Panel 3.2 Digital Lock-in Amplifier Block Diagram 4. Experimental Results and Analysis 4.1 Sine Signal Detection 4.2 Traveling Wave Signal Detection 5. Conclusion ACKNOWLEDGEMENTS References
Bo Ye [ Engineering Research Center of Smart Grid, Yunnan Province, Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China ]
corresponding author
Fei Chen [ Engineering Research Center of Smart Grid, Yunnan Province, Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China ]
Ming Li [ Engineering Research Center of Smart Grid, Yunnan Province, Faculty of Electric Power Engineering, Kunming University of Science and Technology, Kunming 650500, China ]
보안공학연구지원센터(IJSIP) [Science & Engineering Research Support Center, Republic of Korea(IJSIP)]
설립연도
2006
분야
공학>컴퓨터학
소개
1. 보안공학에 대한 각종 조사 및 연구
2. 보안공학에 대한 응용기술 연구 및 발표
3. 보안공학에 관한 각종 학술 발표회 및 전시회 개최
4. 보안공학 기술의 상호 협조 및 정보교환
5. 보안공학에 관한 표준화 사업 및 규격의 제정
6. 보안공학에 관한 산학연 협동의 증진
7. 국제적 학술 교류 및 기술 협력
8. 보안공학에 관한 논문지 발간
9. 기타 본 회 목적 달성에 필요한 사업
간행물
간행물명
International Journal of Signal Processing, Image Processing and Pattern Recognition
간기
격월간
pISSN
2005-4254
수록기간
2008~2016
십진분류
KDC 505DDC 605
이 권호 내 다른 논문 / International Journal of Signal Processing, Image Processing and Pattern Recognition Vol.8 No.4