Integrated control and fault detection of HVAC equipment
US6223544A · kind A · utility
229Cited by
4References
24Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 5, 1999 |
| Grant date | May 1, 2001 |
| Priority date | — |
| Expiry date | Aug 5, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF24F11/32
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
Fault detection is implemented on a finite state machine controller for an air handling system. The method employs data, regarding the system performance in the current state and upon a transition occurring, to determine whether a fault condition exists. The fault detection may be based on saturation of the system control or on a comparison of actual performance to a mathematical model of the air handling system. As a consequence, the control does not have to be in steady-state operation to perform fault detection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.