Efficient distribution of heating, ventilation, and air conditioning functionality

Patent metadata

Field	Value
Publication number	US-10171975-B2
Application number	US-201514712259-A
Country	US
Kind code	B2
Filing date	May 14, 2015
Priority date	Jan 19, 2015
Publication date	Jan 1, 2019
Grant date	Jan 1, 2019

Abstract

In one embodiment, a system for replicating settings in an HVAC network includes a first control unit including a first internal clock, the first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display. The system may also include a second control unit comprising a second internal clock, the second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display. The system may include a communications network, wherein the first control unit detects the second control unit over the communications network and the first internal clock and the second internal clock have the same time.

First claim

The invention claimed is:

1. A system for replicating settings in a heating, ventilation, and air-conditioning (HVAC) network, comprising:
a first control unit comprising a first internal clock operable to maintain an internal time for the first control unit, the first control unit communicatively coupled to a first plurality of HVAC units and a first interactive display;
a second control unit comprising a second internal clock operable to maintain an internal time for the second control unit, the second control unit communicatively coupled to a second plurality of HVAC units and a second interactive display; and
a communications network, wherein the first control unit detects the second control unit over the communications network and the first control unit and the second control unit synchronize the first internal clock and the second internal clock to have the same internal time; and
the first control unit is further operable to:
receive a first settings update from the second control unit;
determine drat the first settings update is associated with a changed universal setting comprising a first setting time, wherein the changed universal setting comprises at least one of a language preference, a temperature unit preference, a password for the communications network, an address of the first and second control units, or a dealer of the first plurality of HVAC units and second plurality of HVAC units;
compare the first setting time of the changed universal setting to a stored setting time of an existing universal setting, wherein the stored setting time reflects the time when existing universal setting was changed and the first setting time reflects the time when the changed universal setting was changed;
determine that the first setting time is more recent in time than the stored setting time;
update the existing universal setting with the changed universal setting; and
implement the changed universal setting in at least one of the first plurality of HVAC units and the first interactive display.

2. The system of claim 1 , wherein the first control unit is operable to:
receive a second settings update from the first interactive display;
determine that the second settings update is a universal settings update; and
transmit the second settings update to the second control unit over the communications network.

3. The system of claim 2 , wherein the first control unit is operable to:
receive a third settings update from the first interactive display;
determine that the third settings update is a local settings update;
store the third settings update in a settings database; and
determine that the third settings update does not get transmitted to the second control unit because it is a local settings update.

4. The system of claim 1 , wherein the first control unit is operable to:
receive a fourth settings update from the second control unit;
determine that the fourth settings update is associated with a changed universal setting comprising a third setting time;
compare the third setting time of the changed universal setting to a stored setting time of an existing universal setting;
determine that the third setting time is older than the stored setting time; and
maintain the existing universal setting.

5. The system of claim 4 , wherein the first control unit is further operable to transmit the existing universal setting to the second control unit.

6. The system of claim 1 , wherein the communications network is a Wi-Fi network.

7. The system of claim 1 , wherein the communications network is an HVAC control network in which the first and second control units use a Wi-Fi direct protocol to facilitate communications.

8. The system of claim 1 , wherein the communications network comprises a wireless access point connected to the Internet; and
the first control unit is further operable to connect to a control server over the Internet using the wireless access point, receive a fifth settings update from the control server, determine that the fifth settings update is a universal settings update, and transmit the fifth settings update to the second control unit over the communications network.

9. The system of claim 1 , wherein the universal setting is a schedule for an operation of the first and second control units.

Assignees

• Lennox Ind Inc

Inventors

• Castillo Daniel A
• Charavda Jayprakash
• Ho Nguyen T
• Khiani Sunil K

Classifications

• G05B2219/21157

  Broken, open line, cable, circuit, faulty connection · CPC title

• H04L1/0004

  applied to control information · CPC title

• F24F11/56

  Remote control · CPC title

• H04L67/12

  specially adapted for proprietary or special-purpose networking environments, e.g. medical networks, sensor networks, networks in vehicles or remote metering networks · CPC title

• H04L12/2823

  Reporting information sensed by appliance or service execution status of appliance services in a home automation network (device-related reporting H04L43/065; arrangements in telecontrol or telemetry systems for selectively calling a substation from a main station, in which substation desired apparatus is selected for applying a control signal thereto or for obtaining measured values therefrom H04Q9/00) · CPC title