Study of orthogonal vector lock-in amplifier in contactless conductivity detector of electrophoresis microchip
An output signal detection method of the contactless conductivity detector of electrophoresis microchip based on orthogonal vector lock-in amplifier is presented. The parameters, which include the excitation signal frequency, the amplitude and frequency of a measured signal, influences on the separation chromatogram detection of electrophoresis microchip is emphatically discussed. The simulation results show that the orthogonal vector lock-in amplifier has superior signal detection capability for on-plane four-electrode contactless conductivity detector, and it can effectively achieve microchips electrophoresis signal detection and pick-up.
orthogonal vector lock-in amplifier modeling and simulation weak signal detection microchip capillary electrophoresis
Honghua Liao Yu Liao Jinqiao Yi Yong Huang
School of Information Hubei University for Nationalities Enshi, Hubei Province, China
国际会议
太原
英文
203-207
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）