Integrated control and fault detection of HVAC equipment United States Patent 06223544

06223544 is referenced by 146 patents and cites 4 patents.

Fault detection is implemented on a finite state machine controller for an air handling system. The method employs data, regarding the system performance in the current state and upon a transition occurring, to determine whether a fault condition exists. The fault detection may be based on saturation of the system control or on a comparison of actual performance to a mathematical model of the air handling system. As a consequence, the control does not have to be in steady-state operation to perform fault detection.

Title
Integrated control and fault detection of HVAC equipment
Application Number
9/368972
Publication Number
6223544 (B1)
Application Date
August 5, 1999
Publication Date
May 1, 2001
Inventor
John E Seem
Glendale
WI, US
Agent
Quarles & Brady
US
Agent
George E Haas
US
Assignee
Johnson Controls Technology Co
MI, US
IPC
F25B 49/02
View Original Source

Citations: 146 (view full list)

  1. Daniel N Nikovski, Ajay Divakaran, Regunathan Radhakrishnan, Kadir A Peker: Detecting and diagnosing faults in HVAC equipment. Mitsubishi Electric Research Laboratories, Dirk Brinkman, Clifton D Mueller, Gene V Vinokur, October 28, 2008: US07444251 (154 worldwide citation)
  2. Jonathan D Douglas, Marcus V A Bianchi, Todd M Rossi: Estimating evaporator airflow in vapor compression cycle cooling equipment. Field Diagnostic Services, Mark A Garzia P C, Mark A Garzia, December 13, 2005: US06973793 (71 worldwide citation)
  3. John E Seem: Adaptive real-time optimization control. Johnson Controls Technology Company, Foley & Lardner, November 9, 2010: US07827813 (69 worldwide citation)
  4. Richard A Wruck: Indoor air quality and economizer control methods and controllers. Honeywell International, October 14, 2008: US07434413 (64 worldwide citation)
  5. Todd M Rossi, Dale Rossi, Jonathan D Douglas, Timothy P Stockman: Apparatus and method for detecting faults and providing diagnostics in vapor compression cycle equipment. Field Diagnostic Services, Law Office of Mark Garzia, Mark A Garzia, July 18, 2006: US07079967 (56 worldwide citation)
  6. Gregory Ralph Harrod: HVAC system analysis tool. Johnson Controls Technology Company, McNees Wallace & Nurick, November 18, 2008: US07451606 (55 worldwide citation)
  7. Martin Hosek, Jay Krishnasamy, Jan Prochazka: Intelligent condition-monitoring and fault diagnostic system for predictive maintenance. Brooks Automation, Perman & Green, February 1, 2011: US07882394 (45 worldwide citation)
  8. Gregory Ralph Harrod, Jeffrey Lee Tucker: Method and apparatus to sense and control compressor operation in an HVAC system. York International Corporation, McNees Wallace & Nurick, July 21, 2009: US07562536 (45 worldwide citation)
  9. Abtar Singh, Paul Wickberg, Thomas J Mathews, Neal Starling: Refrigeration system energy monitoring and diagnostics. Emerson Retail Services, Harness Dickey & Pierce, November 29, 2011: US08065886 (36 worldwide citation)
  10. Clay G Nesler, Kirk H Drees, James P Kummer, Derek Supple, Marc D Andraca, John I Ruiz, Paul Harrison Rode: Smart building manager. Johnson Controls Technology Company, Foley & Lardner, December 3, 2013: US08600556 (36 worldwide citation)

References: 4

  1. Robert J Cantley: Energy management system for refrigeration systems. Macdonald J Wiggins, April 20, 1982: US04325223 (182 worldwide citation)
  2. Henrik S Enstrom: Method primarily for performance control at heat pumps or refrigerating installations and arrangement for carrying out the method. Silverman Cass Singer & Winburn, September 16, 1986: US04611470 (103 worldwide citation)
  3. Mark A Cascia: Digital controller for a cooling and heating plant having near-optimal global set point control strategy. Siemens Building Technologies, Greer Burns & Crain, October 5, 1999: US05963458 (51 worldwide citation)
  4. Mamoru Masauji: Air-conditioning control method for a vehicle. Zexel Corporation, Wolf Greenfield & Sacks P C, December 10, 1996: US05582021 (24 worldwide citation)