Application of reasoning rules for fault diagnostics of control-related faults
AssigneeHoneywell International Inc.
InventorsPetr Endel, Jiri Vass, Jiri Rojicek
Life of this patent
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Abstract
A system controls and monitors a heating, ventilation, and air conditioning (HVAC) system. The system receives raw data from HVAC equipment, controller performance monitoring (CPM) indicators associated with the HVAC equipment, and a set of rules associated with the HVAC equipment. The system processes the CPM indicators and the raw data using the set of rules to generate fault relevancies, and processes the fault relevancies.
Claims19
A process to control and monitor a heating, ventilation, and air conditioning (HVAC) system that includes HVAC equipment, comprising:
- receiving raw data from an operation of a piece of HVAC equipment within the HVAC system;
- receiving controller performance monitoring (CPM) indicators that are associated with the performance of the control of the operation of the piece of HVAC equipment within the HVAC system;
- receiving a set of rules that are associated with the control of the operation of the piece of HVAC equipment within the HVAC system;
- determining whether one or more faults exist in the control of the operation of the piece of HVAC equipment within the HVAC system by applying the set of rules to the CPM indicators and the raw data to:
- identify supporting symptoms and cancelling symptoms that indicate faults in the control of the operation of the piece of HVAC equipment within the HVAC system;
- map the supporting symptoms and the cancelling symptoms to corresponding faults in the control of the operation of the piece of HVAC equipment within the HVAC system;
- determine one or more faults exists in the control of the operation of the piece of HVAC equipment within the HVAC system when the supporting symptoms that support a finding of a particular fault outweigh the cancelling symptoms that cancel a finding of the particular fault;
- generating a fault relevancy for each fault;
- and
- generating a display on a display that illustrates the faults and the fault relevancies in order to inform a user as to which fault should be attended to.
A non-transient, computer-readable medium comprising instructions that when executed by a processor executes a process to monitor the control of the operation of a piece of equipment within a heating, ventilation, and air conditioning (HVAC) system, the process comprising:
- receiving raw data from the operation of the piece of HVAC equipment;
- receiving controller performance monitoring (CPM) indicators associated with the performance of the control of the operation of the piece of HVAC equipment;
- receiving a set of rules associated with the control of the operation of the piece of HVAC equipment;
- determining whether one or more faults exists in the control of the piece of HVAC equipment of the HVAC system by applying the set of rules to the CPM indicators and the raw data to:
- identify supporting symptoms and cancelling symptoms that indicate faults in the control of the piece of HVAC equipment of the HVAC system;
- map the supporting symptoms and the cancelling symptoms to corresponding faults in the control of the piece of HVAC equipment of the HVAC system;
- determine one or more faults exists in the control of the piece of HVAC equipment of the HVAC system when the supporting symptoms that support a finding of a particular fault outweigh the cancelling symptoms that cancel a finding of the particular fault;
- and
- attending to the identified faults.
A system comprising:
- a controller configured to control piece of equipment within a heating, ventilation, and air conditioning (HVAC) system;
- wherein the controller is configured to:
- determine whether one or more faults exist in the control of the operation of the piece of equipment of the HVAC system by:
- identify supporting symptoms and cancelling symptoms that indicate faults in the control of the operation of the piece of equipment of the HVAC system;
- map the supporting symptoms and the cancelling symptoms to corresponding faults in the control of the operation of the piece of equipment of the HVAC system;
- determine one or more faults exists in the control of the operation of the piece of equipment of the HVAC system when the supporting symptoms that support a finding of a particular fault outweigh the cancelling symptoms that cancel a finding of the particular fault;
- and
- attending to the identified faults.
Dependencies are inferred from the claim text.