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发明名称
半空闲式预付费电度表
摘要
属测量仪表之电度表。其目的是降低成本和提高可靠性。表的构成如附图,预付费电度存储于单片机内存和计数器低位,计数器分为高位和低位,总体显示总消耗电度;低位显示存于计数器中预付费电度的已消耗值,低位溢出而显示零时,需预置输入预付电度,否则继电器将断开负载。单片机仅在IC卡输入电度,被查询及预置输入时工作,工作时间极短,工作量很少,所以受干扰机会少,对其速度和内存要求低,因而达到目的。
申请公布号
CN1199172A
申请公布日期
1998.11.18
申请号
CN97111304.1
申请日期
1997.05.09
申请人
戴鹏辉
发明人
戴鹏辉
分类号
G01R11/56
主分类号
G01R11/56
代理机构
代理人
主权项
预付费电度表表内计数器可存预付费电度,正常工作时,单片机大部分时间处于不工作状态。
地址
519070广东省珠海市前山港一路凯力
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