基于AD8302的阻抗测量仪的设计与实现  

Design and implementation of impedance measuring instrument based on AD8302

作　　者：姜保军[1,2] 李炜 JIANG Bao-jun;LI Wei(Chongqing Jiao Tong University,Electromechanical and Vehicle Engineering,Chongqing 400074,China;Key Laboratory of Urban Rail Vehicle System Integration and Control,Chongqing JiaoTong University,Chongqing 400074,China)

机构地区：[1]重庆交通大学机电与车辆工程学院,重庆400074 [2]重庆交通大学城市轨道车辆系统集成与控制重点实验室,重庆400074

出　　处：《电子设计工程》2020年第3期162-165,共4页Electronic Design Engineering

摘　　要：针对目前市场上阻抗测量仪价格高昂、电路复杂的缺点,该研究采用单片机编程和AD8302幅相检测芯片,设计并实现了一种信号源灵活可调的阻抗测量系统。通过测试,误差在4%以内。该阻抗测量仪对元器件要求精度低,成本低廉,适用于对阻抗测量精度不太高的实际应用场合。aiming at the disadvantages of high price and complex circuit of impedance measuring instrument in the market at present,this research adopts single-chip microcomputer programming and AD8302 amplitude phase detection chip,and designs and realizes a kind of impedance measuring system with flexible adjustable signal source. By the test,the error is within 4%.The impedance measuring instrument requires low precision and low cost. It is used in practical applications where the accuracy of impedance measurement is not too high.

关 键 词：阻抗测量 幅值比、相位差测量 信号采集 

分 类 号：TN216[电子电信—物理电子学]