INTELLIGENT CONTROLLER PROVIDING TIME TO TARGET STATE

摘要

A method of calculating a time-to-temperature estimate for a thermostat controlling an HVAC system comprises receiving a first temperature representing a current temperature of an enclosure and receiving a second temperature representing a target temperature of the enclosure. A first component of an estimated time representing an estimated time to transition the temperature in the enclosure from the first temperature to the second temperature by the HVAC system is computed. The first component is computed based on: a plurality of historical time and temperature values recorded from one or more previous temperature change cycles of the enclosure; and at least one external factor selected from a group consisting of: an outside temperature, an outside sunlight amount, an outside wind velocity, and a time of day. A second component of the estimated time based on a current trajectory of time and temperature values as the enclosure transitions from the first temperature to the second temperature is computed. The method also includes: computing the estimated time based on the first component of the estimated time and the second component of the estimated time; and causing the estimated time to be displayed on a display device. A thermostat for calculating a time-to-temperature estimate is also disclosed and claimed.