Resource consumption measurement system and method

• US 9,939,297 B1
• Filed: 01/28/2016
• Issued: 04/10/2018
• Est. Priority Date: 11/22/2014
• Status: Active Grant

• Current Assignee: Husqvarna AB (HUSQVARNA)
• Original Assignee: Orbit Irrigation Products (Pro-Mark LLC)
• Inventors: Eyring, Stuart, Connolly, Karl L., Wangsgaard, Eric Tres, Wardle, Brad, Williams, Bradly
• Primary Examiner(s): Ali, Mohammad
• Assistant Examiner(s): AZAD, MD ABUL K
• Application Number:
  US15/009,390
• Time in Patent Office: 803 Days
• Field of Search: 700284
• CPC Class Codes: A01G 25/16 Control of watering
• 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 11/65 for selecting an operating mode
• CPC Class Codes: F24F 2110/00 Control inputs relating to air properties
• CPC Class Codes: F24F 2140/50 Load
• CPC Class Codes: F24F 2140/60 Energy consumption
• CPC Class Codes: G01D 4/00 Tariff metering apparatus in taximeters G07B13/00; apparatus actuated by coins, cards or the like with meter-controlled dispensing of liquid, gas, or electricity G07F15/00
• CPC Class Codes: G01F 1/00 Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow measuring a proportion of the volume flow G01F5/00
• CPC Class Codes: G01F 13/006 measuring volume in function of time
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G05D 7/0676 by action on flow sources G05D7/0688, G05D7/0694 take precedence

Abstract

An HVAC controller, in one embodiment, may include a gas valve interface and an AC unit switch interface, and a controller that may communicate with at least one of the gas valve and the AC unit switch. An identification module may identify one or more time periods when energy consumption is not likely to occur or is likely minimal, and a calibration module may open and close the at least one of the gas valve and the AC unit switch according to calibration schedule data. A computational module may calculate a computed flow rate for the at least one of the gas valve and the AC unit switch based on a calibration open time, a calibration close time, and the actual energy usage data for usage that occurred between the calibration open time and the calibration close time. The computed flow rate may be utilized to identify anomalies and provide notifications thereof.

Claims

1. An HVAC controller configured to obtain energy consumption data pertinent to an energy-monitored property, the HVAC controller comprising:

at least one of;

a gas valve interface configured to place the HVAC controller in electronic communication with a gas valve associated with heating the energy-monitored property;

an AC unit switch interface configured to place the HVAC controller in electronic communication with an AC unit switch associated with cooling the energy-monitored property;

a valve and/or switch controller configured to transmit electrical signals to at least one of the gas valve and the AC unit switch to open and close the at least one of the gas valve and the AC unit switch in accordance with thermostat schedule data;

an identification module configured to identify, based on first actual energy usage data for the energy-monitored property and using at least one of a set of one or more processors, one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

a calibration module configured to, using at least one of the set of one or more processors, open and close the at least one of the gas valve and the AC unit switch in accordance with calibration schedule data during a first period of time within the one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

a timestamp module configured to, using at least one of the set of one or more processors, identify a calibration open time and a calibration close time for the at least one of the gas valve and the AC unit switch in accordance with the calibration schedule data during the first period of time;

a data module configured to receive, from an energy utility entity, second actual energy usage data for usage that occurred between the calibration open time and the calibration close time for the at least one of the gas valve and the AC unit switch during the first period of time;

a computational module configured to, using at least one of the set of one or more processors, calculate a first computed flow rate for the at least one of the gas valve and the AC unit switch based on the calibration open time, the calibration close time, and the second actual energy usage data received from the energy utility entity for usage that occurred between the calibration open time and the calibration close time during the first period of time;

a flow estimation module configured to, using at least one of the set of one or more processors, estimate energy consumption and provide estimated energy usage data for the energy-monitored property based on the first computed flow rate for the at least one of the gas valve and the AC unit switch and a total operational time for the at least one of the gas valve and the AC unit switch over a selected time period of interest; and

a detection module configured to, using at least one of the set of one or more processors, detect at least one energy consumption anomaly based on a comparison between the estimated energy usage data and third actual energy usage data over the selected time period of interest, the detection module further configured to generate a notification based on a specified threshold discrepancy between the estimated energy usage data and the third actual energy usage data over the selected time period of interest, the at least one energy consumption anomaly indicating a flow rate for the at least one of the gas valve and the AC unit switch during the selected time period of interest that is different from the first computed flow rate for the at least one of the gas valve and the AC unit switch.

2. The HVAC controller of claim 1, further comprising:

a display screen configured to display at least one of the estimated energy usage data in real time, estimated energy usage data over a second selected time period of interest, and a comparison between estimated energy usage data over a third selected time period of interest and estimated energy usage data over a fourth selected time period of interest.

3. The HVAC controller of claim 1, wherein:

the calibration module is configured to open and close the at least one of the gas valve and the AC unit switch in accordance with calibration schedule data during a second period of time within the one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

the timestamp module is configured to, using at least one of the set of one or more processors, identify a calibration open time and a calibration close time for the at least one of the gas valve and the AC unit switch in accordance with the calibration schedule data during the second period of time;

the data module is configured to, using at least one of the set of one or more processors, receive fourth actual energy usage data for usage that occurred between the calibration open time and the calibration close time for the at least one of the gas valve and the AC unit switch during the second period of time;

the computational module, using at least one of the set of one or more processors, is configured to calculate a second computed flow rate for the at least one of the gas valve and the AC unit switch based on the calibration open time, the calibration close time, and the fourth actual energy usage data for usage that occurred between the calibration open time and the calibration close time during the second period of time; and

wherein the calibration module is configured to, using at least one of the set of one or more processors, compare the first computed flow rate to the second computed flow rate and average the first computed flow rate with the second computed flow rate if the second computed flow rate is within a first percentage difference of the first computed flow rate and conduct further calibration if the second computed flow rate is within a second percentage difference of the first computed flow rate.

4. The HVAC controller of claim 1, further comprising one or more meters associated with the at least one of the gas valve and the AC unit switch, the one or more meters configured to send energy meter flow data, directly or indirectly to the HVAC controller, wherein the energy meter flow data is representative of the first and second actual energy usage data.

5. A method for obtaining energy consumption data pertinent to an energy-monitored property, the method comprising:

at one or more of a set of one or more processors within or in electronic communication with an HVAC controller that controls heating and/or cooling of the energy-monitored property, receiving first actual energy usage data for the energy-monitored property, the HVAC controller comprising;

at least one of;

a gas valve interface configured to place the HVAC controller in electronic communication with a gas valve associated with heating the energy-monitored property;

an AC unit switch interface configured to place the HVAC controller in electronic communication with an AC unit switch associated with cooling the energy-monitored property; and

a valve and/or switch controller configured to transmit electrical signals to at least one of the gas valve and the AC unit switch to open and close the at least one of the gas valve and the AC unit switch in accordance with thermostat schedule data;

at one or more of the set of one or more processors, identifying, based on the first actual energy usage data, one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

opening and closing the at least one of the gas valve and the AC unit switch in accordance with calibration schedule data during a first period of time within the one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

at one or more of the set of one or more processors, identifying a calibration open time and a calibration close time for the at least one of the gas valve and the AC unit switch in accordance with the calibration schedule data during the first period of time;

at one or more of the set of one or more processors, receiving second actual energy usage data from an energy utility entity for usage that occurred between the calibration open time and the calibration close time for the at least one of the gas valve and the AC unit switch during the first period of time; and

at one or more of the set of one or more processors, calculating a first computed flow rate for the at least one of the gas valve and the AC unit switch based on the calibration open time, the calibration close time, and the second actual energy usage data from the energy utility entity for usage that occurred between the calibration open time and the calibration close time during the first period of time;

at one or more of the set of one or more processors, estimating energy consumption by providing estimated energy usage data for the energy-monitored property based on the first computed flow rate for the at least one of the gas valve and the AC unit switch and a total operational time for the at least one of the gas valve and the AC unit switch over a selected time period of interest;

at one or more of the set of one or more processors, detecting at least one energy consumption anomaly based on a comparison between the estimated energy usage data and third actual energy usage data over the selected time period of interest, the at least one energy consumption anomaly indicating a flow rate for the at least one of the gas valve and the AC unit switch during the selected time period of interest that is different from the first computed flow rate for the at least one of the gas valve and the AC unit switch; and

at one or more of the set of one or more processors, initiating generation of a notification based on a specified threshold discrepancy between the estimated energy usage data and the third actual energy usage data over the selected time period of interest.

6. The method of claim 5, further comprising a display screen associated with the HVAC controller, the method further comprising:

at the display screen, displaying at least one of the estimated energy usage data in real time, the estimated energy usage data over a second selected time period of interest, and a comparison between estimated energy usage data over a third selected time period of interest and estimated energy usage data over a fourth selected time period of interest.

7. The method of claim 5 further comprising:

opening and closing each of the at least one of the gas valve and the AC unit switch in accordance with calibration schedule data during a second period of time within the one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

at one or more of the set of one or more processors associated with the HVAC controller, identifying a calibration open time and a calibration close time for the at least one of the gas valve and the AC unit switch in accordance with the calibration schedule data during the second period of time;

at one or more of the set of one or more processors associated with the HVAC controller, receiving fourth actual energy usage data for usage that occurred between the calibration open time and the calibration close time for the at least one of the gas valve and the AC unit switch during the second period of time;

at one or more of the set of one or more processors associated with the HVAC controller, calculating a second computed flow rate for the at least one of the gas valve and the AC unit switch based on the calibration open time, the calibration close time, and the fourth actual energy usage data for usage that occurred between the calibration open time and the calibration close time during the second period of time; and

at one or more of the set of one or more processors associated with the HVAC controller, comparing the first computed flow rate to the second computed flow rate and averaging the first computed flow rate with the second computed flow rate if the second computed flow rate is within a first percentage difference of the first computed flow rate and conducting further calibration if the second computed flow rate is within a second percentage difference of the first computed flow rate.

8. The method of claim 5, wherein receiving the first actual energy usage data and the second actual energy usage data comprises receiving energy meter flow data from one or more meters associated with the at least one of the gas valve and the AC unit switch.

9. The method of claim 5, wherein receiving the first actual energy usage data and the second actual energy usage data comprises receiving the first actual energy usage data and the second actual energy usage data from at least one energy utility entity.

10. A computer program product for obtaining energy consumption data pertinent to an energy-monitored property, the computer program product comprising:

a non-transitory computer readable medium; and

computer program code, encoded on the non-transitory computer readable medium, configured to cause one or more processors to perform the steps of;

causing an HVAC controller that controls heating and/or cooling of the energy-monitored property to receive first actual energy usage data for the energy-monitored property, the HVAC controller comprising;

at least one of;

a gas valve interface configured to place the HVAC controller in electronic communication with a gas valve associated with heating the energy-monitored property;

an AC unit switch interface configured to place the HVAC controller in electronic communication with an AC unit switch associated with cooling the energy-monitored property; and

a valve and/or switch controller configured to transmit electrical signals to at least one of the gas valve and the AC unit switch to open and close the at least one of the gas valve and the AC unit switch in accordance with thermostat schedule data;

identifying, based on the first actual energy usage data, one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

opening and closing the at least one of the gas valve and the AC unit switch in accordance with calibration schedule data during a first period of time within the one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

identifying a calibration open time and a calibration close time for the at least one of the gas valve and the AC unit switch in accordance with the calibration schedule data during the first period of time;

receiving second actual energy usage data from an energy utility entity for usage that occurred between the calibration open time and the calibration close time for the at least one of the gas valve and the AC unit switch during the first period of time; and

calculating a first computed flow rate for the at least one of the gas valve and the AC unit switch based on the calibration open time, the calibration close time, and the second actual energy usage data from the energy utility entity for usage that occurred between the calibration open time and the calibration close time during the first period of time;

estimating energy consumption by providing estimated energy usage data for the energy-monitored property based on the first computed flow rate for the at least one of the gas valve and the AC unit switch and a total operational time for the at least one of the gas valve and the AC unit switch over a selected time period of interest;

detecting at least one energy consumption anomaly based on a comparison between the estimated energy usage data and a third actual energy usage data over the selected time period of interest, the at least one energy consumption anomaly indicating a flow rate for the at least one of the gas valve and the AC unit switch during the selected time period of interest that is different from the first computed flow rate for the at least one of the gas valve and the AC unit switch; and

generating a notification based on a specified threshold discrepancy between the estimated energy usage data and the third actual energy usage data over the selected time period of interest.

11. The computer program product of claim 10, further comprising a display screen in electronic communication with the HVAC controller, wherein the computer program code is further configured to cause the one or more processors to cause the display screen to display at least one of the estimated energy usage data in real time, estimated energy usage data over a second selected time period of interest, and a comparison between estimated energy usage data over a third selected time period of interest and estimated energy usage data over a fourth selected time period of interest.

12. The computer program product of claim 10, wherein the computer program code is further configured to cause the one or more processors to perform the steps of:

opening and closing the at least one of the gas valve and the AC unit switch in accordance with calibration schedule data during a second period of time within the one or more future time periods when energy consumption is not likely to occur or is likely minimal within the energy-monitored property;

identifying a calibration open time and a calibration close time for the at least one of the gas valve and the AC unit switch in accordance with the calibration schedule data during the second period of time;

receiving fourth actual energy usage data for usage that occurred between the calibration open time and the calibration close time for the at least one of the gas valve and the AC unit switch during the second period of time;

calculating a second computed flow rate for the at least one of the gas valve and the AC unit switch based on the calibration open time, the calibration close time, and the fourth actual energy usage data for usage that occurred between the calibration open time and the calibration close time during the second period of time; and

comparing the first computed flow rate to the second computed flow rate and averaging the first computed flow rate with the second computed flow rate if the second computed flow rate is within a first percentage difference of the first computed flow rate and conducting further calibration if the second computed flow rate is within a second percentage difference of the first computed flow rate.