Electronic electricity meter
    1.
    发明授权
    Electronic electricity meter 有权
    电子电表

    公开(公告)号:US06784806B1

    公开(公告)日:2004-08-31

    申请号:US09486523

    申请日:2000-02-28

    IPC分类号: G08B2300

    摘要: An electronic electricity meter which, in one embodiment, includes a modem board, or unit, coupled to the meter microcomputer and exchanges information between the meter and a central computer is described. Using signals supplied by the meter microcomputer and the central computer, the modem unit microcomputer can determine whether to exchange information between the meter and the central computer and the proper time at which the information should be exchanged. In an exemplary embodiment, the modem unit detects various conditions within the meter and responds by exchanging information with the central computer at a proper, or pre-defined, time. The modem unit has two different basic modes, or states, of operation. These states of operation are sometimes referred to as the call originate mode and the call answer mode. Call originate refers to the mode of the unit when a condition occurs in meter 10 and information is being transmitted to the central computer from the modem unit utilizing a telephone line. The call is originated upon occurrence, for example of a power outage to the meter. In the call answer mode, the central computer originates a call to the meter. The central computer can then transfer information to the meter, for example a new program can be stored in the modem unit memory.

    摘要翻译: 描述了在一个实施例中包括耦合到仪表微计算机并且在仪表和中央计算机之间交换信息的调制解调器板或单元的电子电表。 使用仪表微机和中央计算机提供的信号,调制解调器单元微型计算机可以确定是否在仪表和中央计算机之间交换信息以及信息应该交换的适当时间。 在示例性实施例中,调制解调器单元检测仪表内的各种状况,并通过在正确或预定义的时间与中央计算机交换信息进行响应。 调制解调器单元具有两种不同的基本模式或状态。 这些操作状态有时被称为呼叫发起模式和呼叫应答模式。 呼叫起始指的是在仪表10中发生状况时的单元的模式,并且使用电话线从调制解调器单元将信息发送到中央计算机。 呼叫发生时,例如电表断电。 在呼叫应答模式下,中央计算机发起对电表的呼叫。 中央计算机然后可以将信息传送到仪表,例如可以将新的程序存储在调制解调器单元存储器中。