SYSTEMS AND METHODS FOR USING RULE-BASED FAULT DETECTION IN A BUILDING MANAGEMENT SYSTEM
First Claim
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1. A method of detecting faults in a building management system, the method comprising:
- at a computer of the building management system, using a stored rule condition to detect a first fault in the building management system;
using the computer to determine a need for a threshold adjustment based on at least one of fault detection data or building management system performance data;
determining a new threshold value for the rule condition;
adjusting the stored rule condition to utilize the new threshold value; and
at the computer, using the adjusted rule condition to detect a second fault in the building management system.
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Abstract
A controller for a building management system includes a system of rules for detecting faults in the building management system. The rules include content conditions and trigger conditions. The content conditions are not checked until one or more of the trigger conditions are met. A rule-based fault detection engine may be implemented by a low level building equipment controller. One or more thresholds for a rule may be automatically or manually adjusted.
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Citations
20 Claims
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1. A method of detecting faults in a building management system, the method comprising:
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at a computer of the building management system, using a stored rule condition to detect a first fault in the building management system; using the computer to determine a need for a threshold adjustment based on at least one of fault detection data or building management system performance data; determining a new threshold value for the rule condition; adjusting the stored rule condition to utilize the new threshold value; and at the computer, using the adjusted rule condition to detect a second fault in the building management system. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of detecting faults in a building management system, the method comprising:
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using a master controller to control a second controller; at the second controller, collecting building equipment data from building equipment and using the collected building equipment data to control the building equipment; at the second controller, processing the collected building equipment data relative to a rule condition; detecting a fault in the building equipment based on the processing of the collected building equipment data relative to the rule condition; and reporting the detected fault to the master controller from the second controller. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A method of detecting faults in a building management system, the method comprising:
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recalling a stored rule; identifying a trigger condition and a content condition for the rule; checking the trigger condition to determine whether to process the content condition; and detecting a fault by processing the content condition. - View Dependent Claims (17, 18, 19, 20)
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Specification