The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 28, 2008
Filed:
Aug. 01, 2006
Daniel N. Nikovski, Cambridge, MA (US);
Ajay Divakaran, Woburn, MA (US);
Regunathan Radhakrishnan, Pacifica, CA (US);
Kadir A. Peker, Muze Mudurlugu, TR;
Daniel N. Nikovski, Cambridge, MA (US);
Ajay Divakaran, Woburn, MA (US);
Regunathan Radhakrishnan, Pacifica, CA (US);
Kadir A. Peker, Muze Mudurlugu, TR;
Mitsubishi Electric Research Laboratories, Inc., Cambridge, MA (US);
Abstract
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.