US 12,282,883 B2
Robust fault detection and diagnosis by constructing an ensemble of detectors
Jaume Amores, Cork (IE); Young M. Lee, Old Westbury, NY (US); Sugumar Murugesan, Santa Clara, CA (US); and Steven R. Vitullo, Milwaukee, WI (US)
Assigned to TYCO FIRE & SECURITY GMBH, Neuhausen am Rheinfall (CH)
Filed by Johnson Controls Technology Company, Auburn Hills, MI (US)
Filed on Dec. 23, 2019, as Appl. No. 16/725,644.
Prior Publication US 2021/0191378 A1, Jun. 24, 2021
Int. Cl. G06Q 10/08 (2024.01); G06F 16/11 (2019.01)
CPC G06Q 10/08 (2013.01) [G06F 16/11 (2019.01)] 28 Claims
OG exemplary drawing
 
1. A method of generating a fault determination in a building management system (BMS), the method comprising:
receiving signal data;
generating, using a plurality of fault detection models, a plurality of fault indications based on the signal data, each of the plurality of fault detection models configured to detect a respective class of fault and each of the plurality of fault indications indicating whether the respective class of fault is detected, each of the plurality of fault indications comprising a respective estimated severity of a potential fault;
generating a fault score by applying a plurality of weight values to the plurality of fault indications generated using the plurality of fault detection models;
comparing the fault score to a fault value;
determining, based on the comparison, an existence of a fault in the BMS;
determining, based on the respective estimated severity of each of the plurality of fault indications, an estimated severity of the fault in the BMS; and
executing, by the BMS, an automatic control operation based on the estimated severity in response to determining the existence of the fault.