AD5933测量水电导率电路设计中的若干问题  

Measurement of Water Conductivity Based on AD5933

作　　者：傅元[1] 吴然[1] 韩吉声[2] 

机构地区：[1]沈阳工业大学,辽宁沈阳110870 [2]新疆油田分公司采油工艺研究院,新疆克拉玛依834000

出　　处：《仪表技术与传感器》2011年第7期63-65,共3页Instrument Technique and Sensor

基　　金：国家自然科学基金项目(60773213)

摘　　要：研究了基于阻抗测试芯片AD5933的水电导率测试方法。涉及的问题包括测量频率的向下扩展和测量频率点的选择;消除激励信号中的直流分量以削弱极化效应;外加驱动降低激励阻抗对测试精度的影响;扫频区间两端点校准AD5933的输出幅度和相移。最后给出了一些实验数据。结果表明该方法电路简单,测量准确,而且集成度高,性能稳定可靠。This paper researched on a water conductivity method based on AD5933.The issues involved were to extend measurement frequency downward,to choose the measurement frequency,to eliminate the DC component reducing polarization effect,to design driver reducing the influence of incentive-impedance.And two-end-points method calibrated the amplitude and phase of AD5933.Finally,it showed some experimental data.The experimental results show this design is simple,accurate and high integrated,and the performance is stable.

关 键 词：水电导率测量 阻抗测试 AD5933 

分 类 号：TP23[自动化与计算机技术—检测技术与自动化装置]