Title :
Micro-Conductivity Rapid Detection Research of Electrophoresis Chip Based on Orthogonal Vector Lock-In Amplifier on FPGA
Author :
Honghua Liao ; Jianjun Chen ; Jun Yu ; Yu Liao ; Jinqiao Yi
Author_Institution :
Dept. of Electron. Sci. & Technol., Huazhong Univ. of Sci. & Technol., Wuhan, China
Abstract :
A capacitively coupled contactless conductivity detection (C4D) method of capillary electrophoresis microchip based on orthogonal vector lock-in amplifier on FPGA is presented. The digital orthogonal vector lock-in amplifier is configured by assembling LPM MULT, ALTMULT ADD, Low-pass Filter and other IP core. The orthogonal driving signals are generated by custom DDS IP core based on DSP Builder software, the embedded CPU, NIOS II, achieves the flexible control of detection system. The simulation results show that it can effectively weaken noise interference. Simultaneously, it can provide a novel design method for the miniaturization, integration and control of biochip system.
Keywords :
amplifiers; electrophoresis; field programmable gate arrays; lab-on-a-chip; ALTMULT ADD; CPU; DDS IP core; DSP Builder software; FPGA; LPM MULT; Low-pass filter; NIOS II; biochip system; capacitively coupled contactless conductivity detection method; capillary electrophoresis microchip; digital orthogonal vector lock-in amplifier; electrophoresis chip; field programmable gate arrays; micro-conductivity rapid detection; orthogonal driving signals; Amplifiers; Assembly; Conductivity; Control systems; Digital filters; Digital signal processing; Electrokinetics; Field programmable gate arrays; Low pass filters; Signal generators;
Conference_Titel :
Computational Intelligence and Software Engineering, 2009. CiSE 2009. International Conference on
Conference_Location :
Wuhan
Print_ISBN :
978-1-4244-4507-3
Electronic_ISBN :
978-1-4244-4507-3
DOI :
10.1109/CISE.2009.5365300
