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Elevator system using dual communication channels

  • US 10,051,040 B2
  • Filed: 04/03/2012
  • Issued: 08/14/2018
  • Est. Priority Date: 04/03/2012
  • Status: Active Grant
First Claim
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1. An elevator control system, comprising:

  • at least one destination entry fixture coupled to a controller area network (CAN) bus that provides a first communication channel, the at least one destination entry fixture operable to transmit destination information over the CAN bus;

    a plurality of elevator car controllers each associated with a respective elevator car, the plurality of elevator car controllers coupled to the CAN bus to receive the destination information;

    the plurality of elevator car controllers coupled to a ring network that provides a second communication channel;

    a group controller operable to determine an elevator car to be dispatched in response to receiving the destination information;

    a security-group bridge configured to provide communications between an outside network and the CAN bus, wherein security information for one or more passengers is provided over the security-group bridge.

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