公开(公告)号：EP0286544A2

公开(公告)日：1988-10-12

申请号：EP88400861.6

申请日：1988-04-11

申请人： SCHLUMBERGER INDUSTRIES, INC.

发明人： Coppola, Richard ,  Riggs, Richard L. ,  Street, Thomas G.

IPC分类号： G01R21/133 ,  G01R11/25 ,  G01R11/56

CPC分类号： G01R11/25 ,  G01R11/56 ,  G01R21/133 ,  Y04S20/36

摘要： A microprocessor based time-of-use electricity meter register uses an external real time clock powered by a backup battery during a power outage to measure real time elapsed during the outage. Upon detection of a power outage, line power and real time data are transferred by the microprocessor to an external, non-volatile memory, the external real time clock is energized by the backup battery and the clock reset to accumulate elapsed real time (days, hours, minutes, seconds) during the duration of the outage. Upon resumption of line power, the elapsed real time accumulated by the clock and the content of the non-volatile memory are transferred to the microprocessor, the backup battery is disconnected from the external real time clock and the real time previously stored in the nonvolatile memory is updated by the elapsed real time so that no customer billing data are lost during the outage.

摘要翻译： 基于微处理器的使用时间的电表寄存器在停电期间使用由备用电池供电的外部实时时钟来测量在中断期间的实时时间。 在检测到停电时，线路电源和实时数据由微处理器传输到外部非易失性存储器，外部实时时钟由备用电池供电，时钟复位以实时累积（天， 时间，分钟，秒）。 在恢复线路电源时，由时钟累积的经过实际时间和非易失性存储器的内容被传送到微处理器，备用电池与外部实时时钟和先前存储在非易失性存储器中的实时断开 由经过的实时更新，以便在中断期间不会丢失客户的计费数据。