HVAC CONTROLLER WITH USER-FRIENDLY INSTALLATION FEATURES FACILITATING BOTH DO-IT-YOURSELF AND PROFESSIONAL INSTALLATION SCENARIOS

• US 20130087629A1
• Filed: 09/30/2012
• Published: 04/11/2013
• Est. Priority Date: 11/19/2010
• Status: Active Grant

• Current Assignee: Google LLC (Alphabet Inc.)
• Original Assignee: Nest Labs Incorporated (Alphabet Inc.)
• Inventors: Sloo, David, Stefanski, Mark D., Matsuoka, Yoky
• Granted Patent: US 8,544,285 B2
• Time in Patent Office: Days
• US Class Current: 236/1.C
• 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 11/52 Indication arrangements, e.g. displays
• CPC Class Codes: F24F 2221/32 preventing human errors during the installation, use or maintenance, e.g. goofy proof
• CPC Class Codes: G05D 23/19 characterised by the use of electric means G05D23/1393 takes precedence
• CPC Class Codes: G05D 23/1902 characterised by the use of a variable reference value
• CPC Class Codes: G05D 23/1917 using digital means
• CPC Class Codes: G06F 3/0482 Interaction with lists of selectable items, e.g. menus
• CPC Class Codes: G06F 3/04847 Interaction techniques to control parameter settings, e.g. interaction with sliders or dials

Abstract

A thermostat includes a housing, a user interface, and a processing system configured to control an HVAC system using setpoint temperature values. The thermostat may also include a plurality of HVAC connectors configured to receive corresponding HVAC control wires, and a connection sensing module configured to determine the identities of HVAC connectors into which corresponding wires have been inserted. The processing system may be further configured to identify, based on the subset of HVAC connectors, whether (i) only a single possible HVAC system configuration is indicated thereby, or (ii) multiple possible HVAC system configurations are indicated thereby, resolve a particular one of the multiple possible HVAC system configurations that is applicable based on a user response to an inquiry presented on the user interface, and operate the HVAC system according to the HVAC system configuration.

Claims

1. A thermostat, comprising:

a housing;

a user interface comprising an electronic display;

a processing system disposed within the housing and coupled to the 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; and

a plurality of HVAC connectors configured to receive a corresponding plurality of HVAC control wires corresponding to the HVAC system, each HVAC connector having an identifier that identifies one or more HVAC functionalities associated with that HVAC connector; and

a connection sensing module coupled to said plurality of HVAC connectors and configured to determine the identities of a first subset of the plurality of HVAC connectors into which corresponding HVAC wires have been inserted, wherein the processing system is further configured to process said identities of said first subset of HVAC connectors to determine a configuration of the HVAC system to be controlled, wherein said processing comprises;

identifying, based on said identities of said first subset of HVAC connectors, whether (i) only a single possible HVAC system configuration is indicated thereby, or (ii) multiple possible HVAC system configurations are indicated thereby; and

operating, if said single possible HVAC system configuration is indicated, said HVAC system according to said single possible HVAC system configuration;

resolving, if said multiple possible HVAC system configurations are indicated, a particular one of the multiple possible HVAC system configurations that is applicable based on at least one user response to at least one inquiry to a user presented on said user interface, and operating said HVAC system according to said resolved particular HVAC system configuration.

2. The thermostat of claim 1 wherein the electronic display of the user interface is configured to provide a graphical representation of a position of the plurality of HVAC connectors along with the functions assigned to each of the first subset of the plurality of HVAC connectors.

3. The thermostat of claim 1 wherein said resolving comprises:

determining whether information representative of a combination of the identities of said first subset of HVAC connectors and said user response are indicative of (i) a situation in which a non-professional user can readily complete an installation process, or (ii) a situation in which a professional installer should be recommended.

4. The thermostat of claim 3 wherein said resolving further comprises providing, on the electronic display of the user interface, (i) a basic interface screen for the non-professional user, and (ii) an advanced interface for a professional installer.

5. The thermostat of claim 4 wherein the advanced interface comprises a warning indicating that damage to the HVAC system may occur.

6. The thermostat of claim 1 wherein one of the plurality of HVAC connectors comprises a wildcard connector that can be configured to interface with a plurality of different HVAC system components.

7. The thermostat of claim 1 wherein said connection sensing module is configured to determine the identities of the first subset of the plurality of HVAC connectors using mechanical sensing.

8. The thermostat of claim 1 wherein said connection sensing module is configured to determine the identities of the first subset of the plurality of HVAC connectors using electrical sensing.

9. The thermostat of claim 1 wherein the electronic display of the user interface is configured to provide a URL in cases where multiple possible HVAC system configurations are indicated by the identities of the first subset of HVAC connectors.

10. The thermostat of claim 1 wherein said multiple possible HVAC system configurations comprise a dual-fuel heat pump configuration and a single-fuel heat pump configuration, wherein said at least one inquiry to a user comprises a selection between single-fuel systems and dual-fuel systems.

11. A method of determining a heating, ventilation, and air conditioning (HVAC) system configuration for an HVAC system for control by a thermostat, the method comprising:

determining the identities of a first subset of a plurality of HVAC connectors into which corresponding HVAC wires have been inserted, wherein the plurality of HVAC connectors are configured to receive a corresponding plurality of HVAC control wires corresponding to the HVAC system, each HVAC connector having an identifier that identifies one or more HVAC functionalities associated with that HVAC connector;

identifying, based on said identities of said first subset of HVAC connectors, whether (i) only a single possible HVAC system configuration is indicated thereby, or (ii) multiple possible HVAC system configurations are indicated thereby;

operating, if said single possible HVAC system configuration is indicated, said HVAC system according to said single possible HVAC system configuration; and

resolving, if said multiple possible HVAC system configurations are indicated, a particular one of the multiple possible HVAC system configurations that is applicable based on at least one user response to at least one inquiry to a user presented on a user interface comprising an electronic display, and operating said HVAC system according to said resolved particular HVAC system configuration, wherein;

said resolving is performed at least in part by a processing system disposed within a housing of a thermostat and coupled to the 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 the 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.

12. The method of claim 11 wherein the electronic display of the user interface is configured to provide a graphical representation of a position of the plurality of HVAC connectors along with the functions assigned to each of the first subset of the plurality of HVAC connectors.

13. The method of claim 11 wherein said resolving comprises:

determining whether information representative of a combination of the identities of said first subset of HVAC connectors and said user response are indicative of (i) a situation in which a non-professional user can readily complete an installation process, or (ii) a situation in which a professional installer should be recommended.

14. The method of claim 13 wherein said resolving further comprises providing, on the electronic display of the user interface, (i) a basic interface screen for the non-professional user, and (ii) an advanced interface for a professional installer.

15. The method of claim 14 wherein the advanced interface comprises a warning indicating that damage to the HVAC system may occur.

16. The method of claim 11 wherein one of the plurality of HVAC connectors comprises a wildcard connector that can be configured to interface with a plurality of different HVAC system components.

17. The method of claim 11 wherein said connection sensing module is configured to determine the identities of the first subset of the plurality of HVAC connectors using mechanical sensing.

18. The method of claim 11 wherein said multiple possible HVAC system configurations comprise a dual-fuel heat pump configuration and a single-fuel heat pump configuration, wherein will said at least one inquiry to a user comprises a selection between single-fuel systems and dual-fuel systems.

19. A thermostat comprising:

a housing;

a user interface;

a processing system communicatively coupled to the user interface and disposed within the housing;

a power stealing circuit coupled to the processing system and configured to provide power to the user interface using a rechargeable battery;

a plurality of HVAC connectors configured to receive a corresponding plurality of HVAC control wires;

a connection sensing module coupled to the plurality of HVAC connectors and configured to provide an indication to the processing system whether a wire is mechanically inserted for each of the plurality of HVAC connectors, wherein the processing system is configured to determine an HVAC system configuration by;

identifying a subset of the plurality of HVAC connectors into which a wire has been mechanically inserted;

identifying an ambiguity resulting from the subset;

providing an indication via the user interface based on the ambiguity;

resolving the ambiguity in accordance with an input provided to the user interface;

determining the HVAC system configuration using the input; and

operating the HVAC system in accordance with the HVAC system configuration.

20. The thermostat of claim 19 wherein the ambiguity comprises multiple possible HVAC system configurations that are indicated by the subset of the plurality of HVAC connectors into which a wire has been mechanically inserted.