Abstract:
A remote elevator monitoring system includes a master (18) associated with a building and a local (14) connected to the master. The local includes an electronic processor (28) which executes instructions for determining whether the master has transmitted a signal packet to the local within a time period selectable at will by an operator at the local. The time period is, for example, a period selected within a range of 0-255 days. Optionally, for example, the master is programmed to transmit a signal packet to the local at a selected time on the last day of the selected time period.
Abstract:
A remote elevator monitoring system includes a master (18) associated with a building and a local (14) connected to the master. The local includes an electronic processor (28) which executes instructions for determining whether the master has transmitted a signal packet to the local within a time period selectable at will by an operator at the local. The time period is, for example, a period selected within a range of 0-255 days. Optionally, for example, the master is programmed to transmit a signal packet to the local at a selected time on the last day of the selected time period.
Abstract:
A remote elevator monitoring system includes a master (18) associated with a building and a local (14) connected to the master. The local includes an electronic processor (28) which executes instructions for determining whether the master has transmitted a signal packet to the local within a time period selectable at will by an operator at the local. The time period is, for example, a period selected within a range of 0-255 days. Optionally, for example, the master is programmed to transmit a signal packet to the local at a selected time on the last day of the selected time period.
Abstract:
A remote elevator monitoring system includes a master (18) associated with a building and a local (14) connected to the master. The local includes an electronic processor (28) which executes instructions for determining whether the master has transmitted a signal packet to the local within a time period selectable at will by an operator at the local. The time period is, for example, a period selected within a range of 0-255 days. Optionally, for example, the master is programmed to transmit a signal packet to the local at a selected time on the last day of the selected time period.
Abstract:
A plurality of cars (A-C) traveling in the same hoistway (10) send communication check codes (27, 35, 70, 77) to each other over a first communication channel, and if a response is not received (30, 37, 73, 80) within a predetermined time (32, 38, 74, 81) the car not getting a response will send a failure mode command to the other two cars (53, 82). Either the car (A) which senses the failure, or a predesignated car (B) will assume a wild car mode (60, 88) after the other two cars are safely parked (56, 57; 85, 86) out of the way, under control of special sensors and signals sent over a second communications channel. Two out of three cars may operate if only one has communication failure with one or two of the others.