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Method and apparatus for communicating with a plurality of electrical metering devices and a system control center with a mobile node

  • US 5,495,239 A
  • Filed: 08/02/1994
  • Issued: 02/27/1996
  • Est. Priority Date: 08/02/1994
  • Status: Expired due to Term
First Claim
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1. A communications system of an electrical power distribution system wherein a plurality of electrical metering devices are operably connected to respective ones of a plurality of distribution transformers, the communications system comprising:

  • a system control center for transmitting and receiving signals; and

    at least one mobile node which relocates in the field within said communications system such that said mobile node can communicate with the plurality of electrical metering devices operably connected to selected ones of the plurality of distribution transformers, wherein each mobile node comprises;

    means for communicating with the plurality of electrical metering devices operably connected to the selected ones of the plurality of distribution transformers near said mobile node via radio frequency signals; and

    means for transmitting the signals received from the plurality of electrical metering devices operably connected to the selected ones of the plurality of distribution transformers to the system control center via radio frequency signals while said mobile node is in the field and removed from the system control center and prior to communication of said mobile node with the plurality of electrical metering devices operably connected to remaining ones of the plurality of distribution transformers such that said system control center can process the transmitted signals while said mobile node remains in the field, wherein said transmitting means comprises means for retransmitting the signals received from the plurality of electrical metering devices connected to the selected ones of the plurality of distribution transformers to the system control center such that the signals are not stored by the mobile node.

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