Smart-home device that self-qualifies for away-state functionality

• US 10,274,914 B2
• Filed: 07/01/2016
• Issued: 04/30/2019
• Est. Priority Date: 10/21/2011
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Google LLC (Alphabet Inc.)
• Inventors: Fisher, Evan J., Matsuoka, Yoky
• Primary Examiner(s): Norman, Marc E
• Application Number:
  US15/201,004
• Publication Number:
  US 20160313022A1
• Time in Patent Office: 1,033 Days
• CPC Class Codes: F24F 11/30 for purposes related to the operation of the system, e.g. for safety or monitoring
• CPC Class Codes: F24F 11/46 Improving electric energy efficiency or saving
• CPC Class Codes: F24F 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 11/62 characterised by the type of control or by internal processing, e.g. using fuzzy logic, adaptive control or estimation of values
• CPC Class Codes: F24F 11/64 using pre-stored data
• CPC Class Codes: F24F 11/65 for selecting an operating mode
• CPC Class Codes: F24F 2110/10 Temperature
• CPC Class Codes: F24F 2120/10 Occupancy
• CPC Class Codes: F24F 2120/12 Position of occupants
• CPC Class Codes: F24F 2140/60 Energy consumption
• CPC Class Codes: G05B 11/01 electric
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05B 19/042 using digital processors G05B19/05 takes precedence
• CPC Class Codes: G05D 23/1904 variable in time

Abstract

A control unit for controlling the operation of at least one smart-home system may include at least one occupancy sensor and a processing system. The processing system may be configured to receive readings from the at least one occupancy sensor during a time interval; compare information derived from the readings to at least one threshold criterion to establish whether the one or more occupancy sensors reliably determined occupancy of an enclosure in which the control unit is installed during the time interval; and enable an away-state feature of the control unit if it is determined that the one or more occupancy sensors reliably determined occupancy of an enclosure during the time interval.

Claims

1. A control unit for controlling the operation of at least one smart-home system, comprising:

at least one occupancy sensor; and

a processing system configured to;

receive readings from the at least one occupancy sensor during a time interval;

compare information derived from the readings from the at least one occupancy sensor during the time interval to at least one threshold criterion;

determine, based at least in part on the comparison, whether the at least one occupancy sensor reliably determined occupancy of an enclosure in which the control unit is installed during the time interval; and

enable an away-state feature of the control unit to be operative after the time interval if it is determined that the at least one occupancy sensor reliably determined occupancy of the enclosure during the time interval.

2. The control unit of claim 1, wherein the away-state feature causes the control unit to enter into an away-state mode of operation upon a determination by the processing system based on readings acquired by the at least one occupancy sensor that an away-state criterion indicative of a non-occupancy condition for the enclosure in which the control unit has been installed has been satisfied.

3. The control unit of claim 1, wherein the control unit further comprises a housing, and wherein the processing system is disposed within the housing and coupled to a user interface, the processing system being configured to be in operative communication with one or more temperature sensors for determining an ambient air temperature, in operative communication with one or more input devices including said user interface for determining a setpoint temperature value, and in still further operative communication with a heating, ventilation, and air conditioning (HVAC) system to control the HVAC system based at least in part on a comparison of a measured ambient temperature and the setpoint temperature value.

4. The control unit of claim 1, wherein the at least one occupancy sensor comprises a Passive Infrared (PIR) sensor.

5. The control unit of claim 1, wherein the threshold criterion is used to establish whether the control unit is placed in a location in the enclosure where occupancy information is readily sensed by the at least one occupancy sensor of the control unit.

6. The control unit of claim 1, wherein the time interval begins upon installation of the control unit within the enclosure.

7. The control unit of claim 1, wherein the time interval comprises between approximately 5 and 15 days.

8. The control unit of claim 1, wherein the time interval is divided into a plurality of time windows, wherein the each of the readings from the at least one occupancy sensor are stored in a corresponding one of the plurality of time windows during which the reading occurs.

9. The control unit of claim 1, wherein the at least one smart-home system comprises an energy-consuming system, and the away-state feature comprises at least one energy-saving mode.

10. A method of qualifying an control unit for a smart-home system to activate an away-state feature, the method comprising:

receiving readings from at least one occupancy sensor during a time interval;

comparing, using a processing system of the control unit, information derived from the readings from the at least one occupancy sensor during the time interval to at least one threshold criterion;

determining, using the processing system of the control unit, and based at least in part on the comparison, whether the at least one occupancy sensors reliably determined occupancy of an enclosure in which the control unit is installed during the time interval; and

enabling, using the processing system of the control unit, an away-state feature of the control unit to be operative after the time interval if it is determined that the at least one occupancy sensor reliably determined occupancy of the enclosure during the time interval.

11. The method of claim 10, wherein the away-state feature causes the control unit to enter into an away-state mode of operation upon a determination by the processing system based on readings acquired by the at least one occupancy sensor that an away-state criterion indicative of a non-occupancy condition for the enclosure in which the control unit has been installed has been satisfied.

12. The method of claim 10, wherein the control unit further comprises a housing, and wherein the processing system is disposed within the housing and coupled to a user interface, the processing system being configured to be in operative communication with one or more temperature sensors for determining an ambient air temperature, in operative communication with one or more input devices including said user interface for determining a setpoint temperature value, and in still further operative communication with a heating, ventilation, and air conditioning (HVAC) system to control the HVAC system based at least in part on a comparison of a measured ambient temperature and the setpoint temperature value.

13. The method of claim 10, wherein the at least one occupancy sensor comprises a Passive Infrared sensor (PIR) mounted within a housing of the control unit.

14. The method of claim 10, wherein the threshold criterion is used to establish whether the control unit is placed in a location in the enclosure where occupancy information is readily sensed by the at least one occupancy sensor of the control unit.

15. The method of claim 10, wherein the time interval begins upon installation of the control unit within the enclosure.

16. The method of claim 10, wherein the time interval comprises approximately 7 days.

17. The method of claim 10, wherein the time interval is divided into a plurality of time windows, wherein the each of the readings from the at least one occupancy sensor are stored in a corresponding one of the plurality of time windows during which each reading occurs.

18. The method of claim 10, wherein the smart-home system comprises an energy-consuming system, and the away-state feature comprises at least one energy-saving mode.