电容式传感器测量动态容器中液位的方法研究

Method Research for Measuring Liquid Level in Dynamic Container with a Capacitive Sensor

文章提出了一种测量动态容器中液体液位的实用传感方法;该法采用了一种新的传感器结构,它主要由装在圆柱形框架内壁的3个电极构成;在不同液位下,采集容器不同倾向倾角时电极之间电容值并送入径向基网络进行训练,构建网络模型应用于实际液位测量;研究结果证明所设计的传感器及其数据融合方法可以在容器不同倾向倾角状态下均能对同一液位正确评价,体现出良好的应用前景。

In this paper,a practical sensing approach for monitoring the liquid-level in a container is presented.In order to realize the method,a new structure sensor has been developed.The sensor consists of three electrodes installed on the inner wall of the cylindrical body.The capacitances between electrodes are determined in container under different incline condition and sent into RBF network for training.A network model has been got and applied to estimate a known liquid-level.The result of this research proves that the designed sensor and data fusion method can be used to measure the liquid-level in the container unrelated to inclination.The method shows good application prospect.