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Elevator monitor and control system with multiple power sources

  • US 5,162,623 A
  • Filed: 10/15/1991
  • Issued: 11/10/1992
  • Est. Priority Date: 10/16/1990
  • Status: Expired due to Fees
First Claim
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1. An elevator monitor and control system, comprising:

  • at least one elevator control apparatus;

    a monitor panel; and

    a power line interconnecting said elevator control apparatus and said monitor panel;

    said monitor panel including an inverter power source backed up by a battery and connected to said power line;

    each of said elevator control apparatus including a first electric power source for supplying a normal power source to an internal circuit of said elevator control apparatus, a second electric power source connected to said power line for supplying a power source to said internal circuit of said elevator control apparatus upon the failure of said first power source and control means for controlling which of said first and second power sources should supply said power source; and

    signal conversion control means disposed within each of said monitor panel and said elevator control apparatus, for exchanging data concerning car position, elevator control and the like between each of said monitor panel and said elevator control apparatus by series transmission through said power line.

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