基于归一化LMS滤波校正的液位测量系统设计

Design of Level Gauge Based on Normalized LMS Filtering Correction

为了提高工业现场环境中液位测量的准确度,设计了一种基于归一化LMS(最小均方误差)滤波方法校正的核辐射法液位测量系统。该系统以STM32为控制核心,利用HART总线HT1200M芯片进行数据传输与接收,归一化LMS滤波算法能够进行更精确的滤波处理。测试数据表明该系统能够消除噪声干扰,提高测量精度。

For purpose of improving the accuracy of measuring liquid level in industrial environment,a nuclear radiation level measurement system based on the normalized LMS(minimum mean square error)filtering correction was designed,which has STM32 cored,HART bus’HT1200M chip based to transmit and receive data and the normalized LMS filtering algorithm can be used for more accurate filtering.The testing data showed that,this system can eliminate noise interference and improve the measurement accuracy.