ELEVATOR AND BUILDING POWER SYSTEM WITH SECONDARY POWER SUPPLY MANAGEMENT
First Claim
1. A system for managing power from a secondary power source to supply power to elevator and building systems after failure of a primary power source, the system comprising:
- an available power monitor operable to provide an indication of power available from the secondary power source;
a demand monitoring system operable to generate a signal related to passenger demand for each elevator in the elevator system; and
a controller configured to prioritize allocation of power from the secondary power source to the elevator and building systems based on the indication of power available from the secondary power source and the passenger demand in the elevator system.
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Accused Products
Abstract
A system (10) manages power from a secondary power (30) source to supply power to elevator and building systems (18) after failure of a primary power source (20). An available power monitor provides a measure or estimate (such as state-of-charge) of the power available from the secondary power source. A demand monitoring system (46) generates a signal related to passenger demand for each elevator in the elevator system. A controller (34) then prioritizes allocation of power from the secondary power source to the elevator and building systems based on the available power from the secondary power source and the passenger demand in the elevator system.
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Citations
28 Claims
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1. A system for managing power from a secondary power source to supply power to elevator and building systems after failure of a primary power source, the system comprising:
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an available power monitor operable to provide an indication of power available from the secondary power source; a demand monitoring system operable to generate a signal related to passenger demand for each elevator in the elevator system; and a controller configured to prioritize allocation of power from the secondary power source to the elevator and building systems based on the indication of power available from the secondary power source and the passenger demand in the elevator system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method for managing power from a secondary power source to supply power to elevator and building systems after failure of a primary power source, the method comprising:
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determining power available from the secondary power source; determining passenger demand for each elevator in the elevator system; prioritizing power distribution to the elevator and building systems from the secondary power source based on the determined power available from the secondary power source and the passenger demand in the elevator system; and allocating power to the elevator and building systems based on the prioritized power distribution. - View Dependent Claims (13, 14, 15, 16, 17)
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18. A system for managing power from a secondary power source to supply power to elevator and building systems after failure of a primary power source, wherein the elevator system comprises one or more elevators each associated with a hoist motor, the system comprising:
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a regenerative drive for delivering power from the secondary power supply to the hoist motor; an available power monitor operable to determine power available from the secondary power source; a demand monitoring system operable to generate a signal related to passenger demand for each elevator in the elevator system; and a controller configured to prioritize allocation of power from the secondary power source to the elevator and building systems based on the power available from the secondary power source and the passenger demand in the elevator system. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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Specification