Elevator system using dual communication channels
First Claim
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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Accused Products
Abstract
An elevator control system includes 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; and a group controller operable to determine an elevator car to be dispatched in response to receiving the destination information.
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Citations
16 Claims
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1. An elevator control system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 16)
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6. A method for control of an elevator control system, comprising:
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using a first communication channel to transmit destination information from at least one destination entry fixture to a group controller, the first communication channel being provided over a CAN bus; using a second communication channel to provide communications between the group controller and a plurality of elevator car controllers, the second communication channel being provided over a ring network; coupling a security-group bridge to the first communication channel, wherein security information for one or more passengers is provided over the security-group bridge. - View Dependent Claims (7, 8, 9)
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10. An elevator control system, comprising:
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at least one destination entry fixture coupled to a first communication channel, the at least one destination entry fixture operable to transmit destination information over the first communication channel and receive information; a group controller to determine an elevator car to be dispatched in response to receiving the destination information over the first communication channel; and a second communication channel coupled to the at least one destination entry fixture, the second communication channel providing information to the least one destination entry fixture; wherein the second communication channel is implemented over a wireless network. - View Dependent Claims (11)
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12. An elevator control system, comprising:
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at least one destination entry fixture coupled to a first communication channel, the at least one destination entry fixture operable to transmit destination information over the first communication channel; and a plurality of elevator car controllers each associated with a respective elevator car, the plurality of elevator car controllers coupled to a second communication channel for elevator car control; a security-group bridge coupled to the first communication channel, wherein security information for one or more passengers is provided over the security-group bridge. - View Dependent Claims (13, 14, 15)
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Specification