A Control and Acquisition System Design of Low-voltage Electrophoresis MicroChip Based on SOPC and DDS
This paper presents a method to control and acquire the conductivity signal of low-voltage capillary electrophoresis microchip based on SOPC and DDS techniques. The soft-core processor with RISC framework,NIOS II,acts as the core component.Under the control of NIOS II,the electrode ports are movably supplied DC voltage by the 128-channel electrodes address decoding strobe controller,and the moving field is formed to achieve of the different particles separating in the microchannel of lowvoltage electrophoresis microchip. The direct digital frequency synthesis (DDS) modeling is built by DSP Builder. The DDS IP core is generated by Quartus II software. To control the dual phase lock-in amplifier by the DDS orthogonal signals sources. The fourelectrode capacitively coupled contactless conductivity detector is designed to achieve the conductivity detection of solution. The design of DDS IP core based on DSP Builder,hardware framework and software design of system are mainly introduced in article.
Honghua Liao Jun Yu Jun Wang Jianjun Chen Yu Liao Jinqiao Yi
Institute of Microelectronics,Department of Electronics Science and Technology,Huazhong University o Institute of Microelectronics,Department of Electronics Science and Technology,Huazhong University o School of Information,Hubei Institute for Nationalities,Enshi Hubei 445000,China
国际会议
成都
英文
251-257
2008-01-01（万方平台首次上网日期，不代表论文的发表时间）