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Prospective determination of processor wake-up conditions in energy buffered HVAC control unit

  • US 8,942,853 B2
  • Filed: 08/29/2013
  • Issued: 01/27/2015
  • Est. Priority Date: 10/21/2011
  • Status: Active Grant
First Claim
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1. A thermostat, comprising:

  • a memory; and

    a processing system, the processing system being configured to be in operative communication with a heating, ventilation, and air conditioning (HVAC) system, the processing system including a processor coupled to said memory, the processor having a first operating state and a second operating state, wherein the processor consumes more power in the second operating state than in the first operating state, wherein the processing system operates by;

    determining a set of wake-up conditions upon which said processor is to enter into said second operating state from said first operating state, said set of wake-up conditions including at least one threshold value associated with at least one environmental condition;

    causing the set of wake-up conditions to be stored in said memory;

    operating in a first mode in which said processor is in said first operating state during a time interval subsequent to said causing the set of wake-up conditions to be stored in said memory;

    determining, while said processor is in said first operating state, whether at least one of the set of wake-up conditions has been met; and

    operating in a second mode in which said processor is in said second operating state upon a determination that the at least one of the set of wake-up conditions has been met, the processing system being configured to control the HVAC system while operating in the second operating mode.

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