원문정보
Signal lock-in detection circuit for mobile device sensor systems
초록
영어
In this paper we propose a lock-in detection method for portable sensor systems and demonstrate with the portable detection module that has high sensitivity and robustness against the noise. The simple portable sensor module is manufactured using MCU(Micro Contorl Unit), OPAMP, MOSFET and a pair of infrared sensor. Manufactured sensor module is testified in the noisy environment caused by an external light and an white noise source. Without any type of band pass filters, we recover a signal of 33 mVp-p in 80 mVp-p white noise and get the DR(Dynamic Reserve) of 14 dB.
목차
I. 서론
II. 신호 잠금 검출 회로 제작과 실험 결과
1. 제작된 신호 잠금 검출 회로
2. 외부 영향에 의한 잡음과 신호 잠금 기법
Ⅳ. 결론
참고문헌