Detecting and diagnosing faults in HVAC equipment
US7444251B2 · kind B2 · utility
263Cited by
2References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 1, 2006 |
| Grant date | Oct 28, 2008 |
| Priority date | — |
| Expiry date | Feb 10, 2027 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F2110/00
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.