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US 8,412,381 B2Granted
HVAC control system
AssigneeMitsubishi Electric Research Laboratories, Inc.
InventorsDaniel Nikovski, Christopher Laughman
Life of this patent
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Abstract
A method controls a heating, ventilation, air conditioning (HVAC) system by determining a travel time from a mobile site to a fixed site, and determining a conditioning time for a HVAC system at the fixed site. The HVAC is maintained in an ON state if the travel time is less than the conditioning time, and otherwise maintaining the HVAC in an OFF state, and wherein the conditioning time is determined using a building thermal model.
Claims19
A method for controlling a heating, ventilation, air conditioning (HVAC) system, comprising the steps:
- determining a travel time from each of a plurality of mobile sites to a fixed site;
- determining a conditioning time for a HVAC system at the fixed site;
- turning the HVAC system ON when any of the travel times is less than the conditioning time;
- turning the HVAC system OFF when all of the travel times are greater than the conditioning time plus a threshold time, wherein the conditioning time is determined using a building thermal model, and wherein the steps are performed in a processor;
- wherein each mobile site communicates a separate travel time to the fixed site;
- wherein the fixed site calculates a separate conditioning time, and the HVAC system uses separate threshold times for occupants sharing a same environment;
- and
- wherein each mobile site includes a mobile transceiver and a mobile locator, and wherein the fixed site includes the processor and a fixed transceiver for communicating with each mobile site via a network.
5 more elements
Dependencies are inferred from the claim text.