四电极污水液位测量方法研究  

Research on four-electrode technique for sewage level measurement

作　　者：卫开夏[1] 李斌[2] 王树梅[1] 

机构地区：[1]徐州师范大学计算机学院,江苏徐州221116 [2]上海大学机械自动化学院自动化系,上海200072

出　　处：《传感器与微系统》2010年第10期43-45,48,共4页Transducer and Microsystem Technologies

基　　金：江苏省高校自然科学基金资助项目(09KJB120003)

摘　　要：根据污水导电的特点,利用与污水相接触的电极进行液位测量,其方法简单实用,具有的优点明显。由于污水的温度和成分不固定,其电导率是变化的,故利用二电极直接测量液体电导来进行液位测量方法不能适用于对污水液位的测量。针对这一问题,提出了一种四电极液位测量方法。通过理论分析和实验验证此方法测量液位不受被测液体电导率变化影响,可用于对温度和成分不固定的污水液位进行测量。According to the conductivity of sewage, it is simple and practical to use electrodes to measure sewage level. Because the conductivity of sewage varies with composition and temperature, it is not suitable to measure conductance to obtain sewage level by electrodes. To solve this problem, a new technique is presented to measure liquid level by four electrodes. The theoretical analysis and experiment results indicate that the liquid conductivity has no influence on the measurement of liquid level by four electrodes. The new technique is suitable for the level measurement of sewage which changes in temperature and composition.

关 键 词：污水 液位测量 液位传感器 四电极方法 

分 类 号：TP216[自动化与计算机技术—检测技术与自动化装置]