延长采样周期对电磁水表测量结果的影响

Influence of Extending Sampling Period on Measurement Results of Electromagnetic Water Meter

介绍了目前在电磁水表中使用极为广泛的延长采样周期以降低励磁功耗的方法,给出了在此种励磁条件下对电磁水表测量用水量可能带来的影响和误差。对电磁水表在测量不同流量特性下用水方式进行了描述与分析,初步得出如下结论:延长采样周期降耗励磁功耗的方法具有一定的使用局限性,不宜在所有的用水测量场合下进行推广与使用。

This paper introduces the method of reducing the excitation power consumption by extending the sampling period,which is widely used in electromagnetic water meter at present,and gives the possible influence and error on the measurement of water consumption of electromagnetic water meter under this excitation condition.Through the description and analysis of the water consumption method of electromagnetic water meter in measuring different flow characteristics,a preliminary conclusion can be drawn:the method of prolonging sampling period and reducing excitation power consumption has certain limitations,and it is not suitable to be popularized and used in all water consumption measurement occasions.