电子器件2017，Vol.40Issue(3)：754-759,6.DOI:10.3969/j.issn.1005-9490.2017.03.047
基于FPGA的溶液电化学阻抗谱测量系统设计
Design of FPGA-Based Liquid EIS Measurement System
赵明忠 1陈庆荣 2袁迎春 3李晨杰 3顾斌3
作者信息
- 1. 南京林业大学大学信息科学技术学院,南京 210003
- 2. 中科院南京土壤研究所,南京 210008
- 3. 南京信息职业技术学院电子信息学院,南京210023
- 折叠
摘要
Abstract
Electrochemical Impedance Spectroscopy(EIS)is an important electrochemical parameter of soil as well as its solution.A high precision measurement system of solution EIS is designed based on Direct Digital Synthesis(DDS)technology and field-programmable gate array(FPGA)device.DDS subsystem is formed based on FPGA+digital-to-analogue converter(D/A),whose function is to generate sine waves with a continuously adjustable frequencies,while the Digital Signal Processing(DSP)subsystem is built based on FPGA+analogue-to-digital converter(A/D),whose function is to obtain the frequency response of the measured object.Combination of both enables obtainment of the Nyquist diagram to reflect the EIS,thereby further,multiple electrochemical parameters,such as the ohmic resistance,charge transfer resistance and the dual-layered capacitance of the electrode-solution interface,become obtainable.The measurement results indicate that the modern electronic technologies'' application,such as DDS,FGPA,etc,provides an effective way for high-precision measurement of electrochemical parameters.关键词
电化学阻抗谱/测量/FPGA/DDSKey words
EIS(Electrochemical Impedance Spectroscopy)/measurement/FPGA/DDS分类
信息技术与安全科学引用本文复制引用
赵明忠,陈庆荣,袁迎春,李晨杰,顾斌..基于FPGA的溶液电化学阻抗谱测量系统设计[J].电子器件,2017,40(3):754-759,6.
