基于电容法的油水界面测量电路设计

摘要

real-time detection of the level of the oil is presented based on the change of Capacitor dielectric which is used as sensing element.The charging and discharging of the capacitor is control ed by micro-chip and whose value is calculated according to its slope.This value stands for the level of oil accurately.It's shown that the test pattern has high stability and reliability and makes a good result.%　　本文以电容介质变化为感测元件，实时检测油罐内油水界面的位置，利用单片机控制电容充放电，通过斜率精确测得电容，准确确定油水界面位置；实验表明本测试系统具有较好的稳定性和可靠性，达到了良好的测试效果。