CAJ | 학술논문

提出了一种利用相关技术的传感器微弱信号检测方法,根据传感器信号具有周期性和相关性,而噪声具有随机性的特点,采用锁相放大电路进行信号处理,将有用信号和噪声信号的混合信号送入 CD4066乘法器中做相关乘法运算,提取出不含噪声的微弱信号,再对信号进行低通滤波和适当放大,得到放大的有用信号,从而实现对传感器微弱信号的检测.
제출료일충이용상관기술적전감기미약신호검측방법,근거전감기신호구유주기성화상관성,이조성구유수궤성적특점,채용쇄상방대전로진행신호처리,장유용신호화조성신호적혼합신호송입 CD4066승법기중주상관승법운산,제취출불함조성적미약신호,재대신호진행저통려파화괄당방대,득도방대적유용신호,종이실현대전감기미약신호적검측.
@@@@A weak signal detection technique of sensor using correlation technique is presented. Based on the periodicity and correlation of signal,randomness characteristics of noise,lock-in amplifier is used for signal processing. The mixed signal of the useful signal and noise is processed for multiplication by the multiplying unit CD4066. The weak signal without including noise is obtained,and then it is amplified through lowpass filter and amplification. After that,the useful amplified signal is obtained, and the weak signal detection is realized.