Apparatus and method for detecting degradation in climate control system performance

• US 10,031,501 B2
• Filed: 02/22/2011
• Issued: 07/24/2018
• Est. Priority Date: 02/24/2010
• Status: Active Grant

• Current Assignee: Centrica Hive Limited (Centrica PLC)
• Original Assignee: Centrica Hive Limited (Centrica PLC)
• Inventors: Chapman, Colin
• Primary Examiner(s): Furdge, Larry
• Application Number:
  US13/032,231
• Publication Number:
  US 20110204150A1
• Time in Patent Office: 2,709 Days
• Field of Search: 236 94, 236 51, 62126, 62127, 62230, 165 111, 700 21, 700 27, 700 30, 700 31, 700 36, 700 39, 700 47, 700 57, 700 80, 700108, 700110
• CPC Class Codes: G05B 19/0428 Safety, monitoring G05B19/0423 takes precedence
• CPC Class Codes: G05B 2219/24042 Signature analysis, compare recorded with current data, if error then alarm
• CPC Class Codes: G05B 2219/2614 HVAC, heating, ventillation, climate control
• CPC Class Codes: Y02B 70/30 Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
• CPC Class Codes: Y04S 20/20 End-user application control systems

Abstract

The present invention relates to the detection of degradation in climate control system performance, in particular to the detection of degradation in heating system performance or air-conditioning system performance that is an indicator of impending heating system failure or air-conditioning system failure in domestic properties. In particular, the present invention provides a method for detecting such degradation comprising: receiving climate control data indicative of a climate control system in a property (location) being turned on and turned off; receiving an energy consumption signal indicative of the energy consumption of the property; correlating the received signal with the received data to determine an energy consumption signature of the climate control system when being turned on and turned off; comparing the determined signature with previously obtained energy consumption signatures to detect differences in the determined signature that are indicative of degradation.

Claims

1. A method for detecting degradation in the performance of a climate control system indicative of failure in the climate control system, comprising:

receiving a control signal output by a controller to control a climate control system, the control signal indicative of said climate control system in a location being turned on and turned off;

receiving an energy consumption signal indicative of the overall energy consumption of the location, including energy consumption by a plurality of loads at the location including the climate control system;

time-correlating the received energy consumption signal with the received climate control signal to determine an energy consumption signature of the climate control system when being turned on and turned off, wherein the time-correlating step comprises determining the energy consumption signature of the climate control system by determining, based on the climate control signal, when the climate control system is being turned on or off, and measuring the energy consumption signal during turn on or turn off of the climate control system, to produce the energy consumption signature, the energy consumption signature indicating changes in the overall energy consumption at the location during turn-on or turn-off of the climate control system; and

comparing the energy consumption signature determined during turn on or turn off of the climate control system with previously measured energy consumption signatures to detect differences in the determined signature that are indicative of degradation of climate control system performance indicative of impending climate control system failure, to thereby allow maintenance to prevent failure of said climate control system;

wherein the energy consumption signature is a complex signature comprising a plurality of loads, and wherein the step of comparing the energy consumption signature with previously measured energy consumption signatures to detect differences comprises detecting disappearance of a given part of the complex signature.

2. A method according to claim 1, further comprising reporting the degradation of the performance of the climate control system to the user.

3. A method according to claim 2, wherein the reporting is accessible remotely via a webpage.

4. A method according to claim 1, wherein comparing to detect differences, detects the absence or modification of the energy consumption signature indicative of a degradation in performance.

5. A method according to claim 1, further comprising the step of storing the determined energy consumption signature.

6. A method according to claim 1, further comprising controlling the climate control system in response to signals received from one or more of a thermostat, timer, air-conditioning controller or boiler controller.

7. Apparatus for detecting degradation in the performance of a climate control system indicative of failure in the climate control system, comprising:

a climate control signal input for receiving a climate control signal output by a controller to control a climate control system in a property, the control signal indicative of the climate control system being turned on and turned off;

an energy consumption input for receiving an energy consumption signal indicative of an overall energy consumption of the property, including energy consumption by a plurality of loads at the property including the climate control system;

a correlator to time-correlate the climate control signal and energy consumption signal to determine an energy consumption signature of the climate control system when being turned on or turned off, wherein the correlator is arranged to determine the energy consumption signature of the climate control system by determining, based on the climate control signal, when the climate control system is being turned on or off, and measuring the energy consumption signal during turn on or turn off of the climate control system, to produce the energy consumption signature, the energy consumption signature indicating changes in the overall energy consumption at the property during turn-on or turn-off of the climate control system; and

a detector to detect differences in the determined energy consumption signature indicative of a degradation of climate control system performance by comparing the energy consumption signature determined during turn on or turn off of the climate control system with previously measured energy consumption signatures, to thereby allow maintenance to prevent failure of said climate control system;

wherein the energy consumption signature is a complex signature comprising a plurality of loads, and wherein the detector is configured to detect differences by detecting disappearance of a given part of the complex signature.

8. Apparatus according to claim 7, further comprising an output to output a warning of a degradation in the performance of the climate control system to a user.

9. Apparatus according to claim 8, wherein the output is accessible remotely via a webpage.

10. Apparatus according to claim 7, wherein the detector detects the absence or modification of the energy consumption signature indicative of a degradation in performance.

11. Apparatus according to claim 7, further comprising memory to store the determined energy consumption signatures.

12. Apparatus according to claim 7, further comprising a controller to control the climate control system in response to signals received from one or more of a thermostat, timer, air-conditioning controller or heating system controller.

13. Apparatus according to claim 7, wherein the apparatus is located remote of the location and receives the climate control input and energy consumption signals via a wired or wireless connection.

14. A method for detecting degradation in the performance of a heating system indicative of failure in the heating system, comprising:

receiving a heating system control signal output by a controller to control a heating system in a location, the control signal indicative of the heating system being turned on and turned off;

receiving an energy consumption signal indicative of the overall energy consumption of the location, including energy consumption by a plurality of loads at the location including the heating system;

time-correlating the received energy consumption signal with the received heating system control signal to determine an energy consumption signature of the heating system when being turned on and turned off, wherein the time-correlating step comprises determining the energy consumption signature of the heating system by determining, based on the climate control signal, when the heating system is being turned on or off, and measuring the energy consumption signal during turn on or turn off of the heating system, to produce the energy consumption signature, the energy consumption signature indicating changes in the overall energy consumption at the location during turn-on or turn-off of the heating system; and

comparing the energy consumption signature determined during turn on or turn off of the heating system with previously measured energy consumption signatures to detect differences in the determined signature that are indicative of degradation of heating system performance indicative of impending heating system failure, to thereby allow maintenance to prevent failure of said heating system;

wherein the energy consumption signature is a complex signature comprising a plurality of loads, and wherein the step of comparing the energy consumption signature with previously measured energy consumption signatures to detect differences comprises detecting disappearance of a given part of the complex signature.