07444251 is referenced by 83 patents and cites 5 patents.

A method and system detects and diagnoses faults in heating, ventilating and air conditioning (HVAC) equipment. Internal state variables of the HVAC equipment are measured under external driving conditions. Expected internal state variables are predicted for the HVAC equipment operating under the external driving conditions using a locally weighted regression model. Features are determined of the HVAC based on differences between the measured and predicted state variables. The features are classified to determine a condition of the HVAC equipment.

Title
Detecting and diagnosing faults in HVAC equipment
Application Number
11/498289
Publication Number
7444251 (B2)
Application Date
August 1, 2006
Publication Date
October 28, 2008
Inventor
Kadir A Peker
Muze Mudurlugu
TR
Regunathan Radhakrishnan
Pacifica
CA, US
Ajay Divakaran
Woburn
MA, US
Daniel N Nikovski
Cambridge
MA, US
Agent
Gene V Vinokur
Clifton D Mueller
Dirk Brinkman
Assignee
Mitsubishi Electric Research Laboratories
MA, US
IPC
G01L 25/00
G01D 3/00
G06F 19/00
G05B 9/02
G08B 21/00
G01N 37/00
View Original Source