Self-activating setback thermostat

Details Self-activating setback thermostat Self-activating setback thermostat

G - Physics

05

D

G05D 23/19 (2006.01)

Patent

CA 2058833

ABSTRACT OF THE DISCLOSURE An energy-saving setback thermostat system for controlling the operation of a temperature-modifying apparatus arranged to modify the temperature of a conditioned space, said apparatus having the capability to automatically control heating and air conditioning equipment. The device measures human activity in an area under surveillance. The device has two program- mable temperature set points, a "normal" set point, and a "setback" set point. The device's logic, incorporated in a microprocessor or electronic circuit, uses one or more pas- sive and/or active sensors to determine the presence of human activity. If the device senses human activity present, it remains at the normal set point. If human activity if not detected within a programmed polling interval, the device's logic will revert operation to the programmed "setback" set point to conserve energy.

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