基于M/T算法针对机械式水表误差检测及校准的改进方法

Modified Method of Mechanical Water Meter's Error Measurement and Adjusting Based on M/T Algorithm

研究基于M/T高精度数字测速算法的改进比较法水表误差检测,采用反射式激光传感器对水表始动元件进行检测,采集到的反馈脉冲信号与时钟信号同时送入单片机进行M/T测速算法运算。从而得到始动元件转速,并根据标准表和被测表的转速求取水表示值误差。结果表明:该算法可以充分发挥M/T算法的宽域性,在整个测速范围内获得很高的测速精度和精度一致性,具有较高的动态测量分辨率。能够在短时间内对水表误差进行高精度测量并指导校准工作,实现动态误差测量及校准。

The modified comparison method is based on M/T velocity measure algorithm with high precision which is analyzed on error-detection by comparison method.The reflex laser sensor was used to measure the tumor-initiating component of water meter.The data acquisition of feedback pulse signal was send to singlechip with clock signal to conclude by the M/T speed algorithm operations and then get the speed of tumor-initiating component.According to the rotative differences between standard and measured meter,the water’s indication error could be gotten.The results show that the algorithm could allow full play to the wide performance of M/T algorithm.In the whole speed range,the method get high-speed measuring precision and consistency,which have high dynamic measurement resolution.The method can measure and adjust the error of water meter with high accuracy in a short time,and realize the dynamic measurement calibration and calibration.