基于电容传感器的高精度液位检测装置设计  

Design of High-precision Liquid Level Detection Device Based on Capacitance Sensor

作　　者：王慧 

机构地区：[1]江阴职业技术学院电子信息工程系,江苏无锡214400

出　　处：《工业控制计算机》2023年第10期49-51,共3页Industrial Control Computer

基　　金：2021年江苏高校哲学社会科学研究课题:高职电类专业社团思政教育的探索与实践(2021SJB0466);2020年江苏省“青蓝工程”资助项目。

摘　　要：设计了一种使用电容传感器的液位检测装置。检测装置采用TI的电容传感器FDC2214进行多通道电容检测,检测出的电容数字量经I2C总线送下位机换算出当前液位高度后发送至上位机LabVIEW显示。该装置采用容器与电容极板相分离的非接触测量设计,能快速便捷地检测不同液体的液位。实验结果表明,该装置应用场合广泛,能测量0~100 mm液位高度,测量相对误差为4%,为非接触测量液位提供了参考方案。This design is a liquid level detection device using capacitance sensor.The detection device uses the capacitance sensor FDC2214 of TI company for multi-channel capacitance detection,and the detected capacitance digital quantity is sent to the lower computer via I2C bus to calculate the current liquid level and then sent to the upper computer LabVIEW for display.The device adopts a non-contact measurement design with the separation of the container and the capacitor plate,which can quickly and conveniently detect the liquid level of different liquids.The experimental results show that the device can be used in a wide range of applications,and can measure the level of 0~100 mm,with a relative error of 4%.It provides a reference scheme for non-contact measurement of liquid level.

关 键 词：电容传感器 液位检测 非接触液位测量 液位报警 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置] TH816[自动化与计算机技术—控制科学与工程]