当前,在流量计量方面,检测仪表的最终记录方式,大多数都采用电磁计数器累计流量.电磁计数器是功耗较大的元件,采用齿轮传递结构,机械磨损大,因此,常造成卡字、数字乱跳、跳半个字或使驱动电路损坏等.以DXS—102比例积算器为例,由电磁计数器造成的停跳、乱跳、漏跳等故障占整台仪表故障率的60%以上,这给计量管理与经济核算带来了很大困难. At present, in terms of flow measurement, most of the final recording methods of testing instruments use the electromagnetic counter to accumulate the flow rate. The electromagnetic counter is a component with large power consumption and adopts a gear transmission structure with large mechanical wear and therefore often causes card numbers and numbers Jump, jump half a word or make the drive circuit damage, etc .. To DXS-102 ratio totalizer, for example, caused by the electromagnetic counter stop jumping, jumping, missing jump and other failures accounted for more than 60% of the entire instrument failure rate This has brought great difficulties to the measurement management and economic accounting.