Fault Isolability Analysis and Optimal Sensor Placement for Fault Diagnosis in Smart Buildings

Max Trothe, Hamid Reza Shaker*, Muhyiddine Jradi, Krzysztof Arendt

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

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Abstract

Faults and anomalies in buildings are among the main causes of building energy waste and occupant discomfort. An effective automatic fault detection and diagnosis (FDD) process in buildings can therefore save a significant amount of energy and improve the comfort level. Fault diagnosability analysis and an optimal FDD-oriented sensor placement are prerequisites for effective, efficient and successful diagnostics. This paper addresses the problem of fault diagnosability for smart buildings. The method used in the paper is a model-based technique which uses Dulmage-Mendelsohn decomposition. To the best of our knowledge, this is the first time that this method is used for applications in smart buildings. First a dynamic model for a zone in a real-case building is developed in which faults are also introduced. Then fault diagnosability is investigated by analyzing the fault isolability of the model. Based on the investigation, it was concluded that not all the faults in the model are diagnosable. Then an approach for placing new sensors is implemented. It is observed that for two test scenarios, placing additional sensors in the model leads to full diagnosability. Since sensors placement is key for an effective FDD process, the optimal placement of such sensors is also studied in this work. A case study of campus building OU44 at the University of Southern Denmark is considered. The results show that as the system gets more complicated by introducing more faults, additional sensors should be added to achieve full diagnosability.

Original languageEnglish
Article number1601
JournalEnergies
Volume12
Issue number9
Number of pages12
ISSN1996-1073
DOIs
Publication statusPublished - 26. Apr 2019

Fingerprint

Sensor Placement
Fault Analysis
Intelligent buildings
Fault Diagnosis
Failure analysis
Diagnosability
Fault
Sensors
Fault Detection and Diagnosis
Fault detection
Sensor
Buildings
Dynamic models
Energy
Placement
Anomaly
Decomposition
Dynamic Model
Diagnostics
Model

Keywords

  • Dulmage-Mendelsohn decomposition
  • Fault diagnosability
  • Sensor placement
  • Smart buildings

Cite this

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title = "Fault Isolability Analysis and Optimal Sensor Placement for Fault Diagnosis in Smart Buildings",
abstract = "Faults and anomalies in buildings are among the main causes of building energy waste and occupant discomfort. An effective automatic fault detection and diagnosis (FDD) process in buildings can therefore save a significant amount of energy and improve the comfort level. Fault diagnosability analysis and an optimal FDD-oriented sensor placement are prerequisites for effective, efficient and successful diagnostics. This paper addresses the problem of fault diagnosability for smart buildings. The method used in the paper is a model-based technique which uses Dulmage-Mendelsohn decomposition. To the best of our knowledge, this is the first time that this method is used for applications in smart buildings. First a dynamic model for a zone in a real-case building is developed in which faults are also introduced. Then fault diagnosability is investigated by analyzing the fault isolability of the model. Based on the investigation, it was concluded that not all the faults in the model are diagnosable. Then an approach for placing new sensors is implemented. It is observed that for two test scenarios, placing additional sensors in the model leads to full diagnosability. Since sensors placement is key for an effective FDD process, the optimal placement of such sensors is also studied in this work. A case study of campus building OU44 at the University of Southern Denmark is considered. The results show that as the system gets more complicated by introducing more faults, additional sensors should be added to achieve full diagnosability.",
keywords = "Dulmage-Mendelsohn decomposition, Fault diagnosability, Sensor placement, Smart buildings",
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Fault Isolability Analysis and Optimal Sensor Placement for Fault Diagnosis in Smart Buildings. / Trothe, Max; Shaker, Hamid Reza; Jradi, Muhyiddine; Arendt, Krzysztof.

In: Energies, Vol. 12, No. 9, 1601, 26.04.2019.

Research output: Contribution to journalJournal articleResearchpeer-review

TY - JOUR

T1 - Fault Isolability Analysis and Optimal Sensor Placement for Fault Diagnosis in Smart Buildings

AU - Trothe, Max

AU - Shaker, Hamid Reza

AU - Jradi, Muhyiddine

AU - Arendt, Krzysztof

PY - 2019/4/26

Y1 - 2019/4/26

N2 - Faults and anomalies in buildings are among the main causes of building energy waste and occupant discomfort. An effective automatic fault detection and diagnosis (FDD) process in buildings can therefore save a significant amount of energy and improve the comfort level. Fault diagnosability analysis and an optimal FDD-oriented sensor placement are prerequisites for effective, efficient and successful diagnostics. This paper addresses the problem of fault diagnosability for smart buildings. The method used in the paper is a model-based technique which uses Dulmage-Mendelsohn decomposition. To the best of our knowledge, this is the first time that this method is used for applications in smart buildings. First a dynamic model for a zone in a real-case building is developed in which faults are also introduced. Then fault diagnosability is investigated by analyzing the fault isolability of the model. Based on the investigation, it was concluded that not all the faults in the model are diagnosable. Then an approach for placing new sensors is implemented. It is observed that for two test scenarios, placing additional sensors in the model leads to full diagnosability. Since sensors placement is key for an effective FDD process, the optimal placement of such sensors is also studied in this work. A case study of campus building OU44 at the University of Southern Denmark is considered. The results show that as the system gets more complicated by introducing more faults, additional sensors should be added to achieve full diagnosability.

AB - Faults and anomalies in buildings are among the main causes of building energy waste and occupant discomfort. An effective automatic fault detection and diagnosis (FDD) process in buildings can therefore save a significant amount of energy and improve the comfort level. Fault diagnosability analysis and an optimal FDD-oriented sensor placement are prerequisites for effective, efficient and successful diagnostics. This paper addresses the problem of fault diagnosability for smart buildings. The method used in the paper is a model-based technique which uses Dulmage-Mendelsohn decomposition. To the best of our knowledge, this is the first time that this method is used for applications in smart buildings. First a dynamic model for a zone in a real-case building is developed in which faults are also introduced. Then fault diagnosability is investigated by analyzing the fault isolability of the model. Based on the investigation, it was concluded that not all the faults in the model are diagnosable. Then an approach for placing new sensors is implemented. It is observed that for two test scenarios, placing additional sensors in the model leads to full diagnosability. Since sensors placement is key for an effective FDD process, the optimal placement of such sensors is also studied in this work. A case study of campus building OU44 at the University of Southern Denmark is considered. The results show that as the system gets more complicated by introducing more faults, additional sensors should be added to achieve full diagnosability.

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