FACILITATING AMBIENT TEMPERATURE MEASUREMENT ACCURACY IN AN HVAC CONTROLLER HAVING INTERNAL HEAT-GENERATING COMPONENTS
First Claim
1. A thermostat, comprising:
- a housing;
a user interface;
one or more temperature sensors, each of the one or more temperature sensors being configured to provide temperature sensor measurements, wherein said one or more temperature sensors includes a first temperature sensor, a second temperature sensor, and a third temperature sensor, each being positioned at different locations relative to the housing; and
a processing system disposed within the housing, the processing system being configured to be in operative communication with the one or more temperature sensors to receive the temperature sensor measurements, in operative communication with one or more input devices including said user interface for determining a setpoint temperature, and in still further operative communication with a heating, ventilation, and air conditioning (HVAC) system to control the HVAC system based on a comparison of a determined ambient temperature and the setpoint temperature, wherein said processing system is configured to;
(i) operate in a plurality of operating states including a first operating state characterized by relatively low power consumption and a corresponding relatively low associated heat generation and a second operating state characterized by relatively high power consumption and a corresponding relatively high associated heat generation;
(ii) during time intervals in which the processing system is operating in the first operating state, process the temperature sensor measurements according to a first ambient temperature determination algorithm based on readings from said first and second temperature sensors and not based on readings from said third temperature sensor to compute the determined ambient temperature; and
(iii) during time intervals in which the processing system is operating in the second operating state, process the temperature sensor measurements according to a second ambient temperature determination algorithm based on readings from said third temperature sensor to compute the determined ambient temperature.
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Accused Products
Abstract
A thermostat may include one or more temperature sensors, and a processing system configured to be in operative communication with an HVAC system. The processing system may be configured to operate a first operating state characterized by relatively low power consumption and a corresponding relatively low associated heat generation, and a second operating state characterized by relatively high power consumption and a corresponding relatively high associated heat generation. During time intervals in which the processing system is operating in the first operating state, the processing system may process the temperature sensor measurements according to a first ambient temperature determination algorithm to compute the determined ambient temperature. During time intervals in which the processing system is operating in the second operating state, the processing system may process the temperature sensor measurements according to a second ambient temperature determination algorithm to compute the determined ambient temperature.
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Citations
20 Claims
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1. A thermostat, comprising:
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a housing; a user interface; one or more temperature sensors, each of the one or more temperature sensors being configured to provide temperature sensor measurements, wherein said one or more temperature sensors includes a first temperature sensor, a second temperature sensor, and a third temperature sensor, each being positioned at different locations relative to the housing; and a processing system disposed within the housing, the processing system being configured to be in operative communication with the one or more temperature sensors to receive the temperature sensor measurements, in operative communication with one or more input devices including said user interface for determining a setpoint temperature, and in still further operative communication with a heating, ventilation, and air conditioning (HVAC) system to control the HVAC system based on a comparison of a determined ambient temperature and the setpoint temperature, wherein said processing system is configured to; (i) operate in a plurality of operating states including a first operating state characterized by relatively low power consumption and a corresponding relatively low associated heat generation and a second operating state characterized by relatively high power consumption and a corresponding relatively high associated heat generation; (ii) during time intervals in which the processing system is operating in the first operating state, process the temperature sensor measurements according to a first ambient temperature determination algorithm based on readings from said first and second temperature sensors and not based on readings from said third temperature sensor to compute the determined ambient temperature; and (iii) during time intervals in which the processing system is operating in the second operating state, process the temperature sensor measurements according to a second ambient temperature determination algorithm based on readings from said third temperature sensor to compute the determined ambient temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of compensating for internal heating in a thermostat, the method comprising:
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determining, using a processing system of the thermostat, a current operating state of the processing system, wherein the thermostat comprises; a housing; a user interface; one or more temperature sensors, each of the one or more temperature sensors being configured to provide temperature sensor measurements, wherein said one or more temperature sensors includes a first temperature sensor, a second temperature sensor, and a third temperature sensor, each being positioned at different locations relative to the housing; and a processing system disposed within the housing, the processing system being configured to be in operative communication with the one or more temperature sensors to receive the temperature sensor measurements, in operative communication with one or more input devices including said user interface for determining a setpoint temperature, and in still further operative communication with a heating, ventilation, and air conditioning (HVAC) system to control the HVAC system based on a comparison of a determined ambient temperature and the setpoint temperature, wherein said processing system is configured to operate in a plurality of operating states including a first operating state characterized by relatively low power consumption and a corresponding relatively low associated heat generation and a second operating state characterized by relatively high power consumption and a corresponding relatively high associated heat generation; during time intervals in which the processing system is operating in the first operating state, processing the temperature sensor measurements according to a first ambient temperature determination algorithm based on readings from said first and second temperature sensors and not based on readings from said third temperature sensor to compute the determined ambient temperature; and during time intervals in which the processing system is operating in the second operating state, processing the temperature sensor measurements according to a second ambient temperature determination algorithm based on readings from said third temperature sensor to compute the determined ambient temperature. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A thermostat, comprising:
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one or more temperature sensors, each of the one or more temperature sensors being configured to provide temperature sensor measurements; and a processing system, the processing system being configured to be in operative communication with the one or more temperature sensors to receive the temperature sensor measurements, and configured to be in operative communication with a heating, ventilation, and air conditioning (HVAC) system to control the HVAC system based on a comparison of a determined ambient temperature and a setpoint temperature, wherein said processing system is configured to; (i) operate in a plurality of operating states including a first operating state characterized by relatively low power consumption and a corresponding relatively low associated heat generation and a second operating state characterized by relatively high power consumption and a corresponding relatively high associated heat generation; (ii) during time intervals in which the processing system is operating in the first operating state, process the temperature sensor measurements according to a first ambient temperature determination algorithm to compute the determined ambient temperature; and (iii) during time intervals in which the processing system is operating in the second operating state, process the temperature sensor measurements according to a second ambient temperature determination algorithm to compute the determined ambient temperature. - View Dependent Claims (18, 19, 20)
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Specification