Controller for use in an environment control network capable of storing diagnostic information
US5555195A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 1994 |
| Grant date | Sep 10, 1996 |
| Priority date | — |
| Expiry date | Jul 22, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P90/02
- WIPO fieldThermal processes and apparatus
- WIPO sectorMechanical engineering
Abstract
The present invention relates to a diagnostic system for use in a network control system. The diagnostic system is preferably utilized to analyze VAV box performance in an environmental control system such as a network facilities management system. The diagnostic system advantageously records temperature, airflow, and actuator position data in the controller associated with the VAV box. Such a system allows person to analyze VAV boxes and controller performance over a particular timely period and the lifetime of the system. Box and damper warnings may be provided by the diagnostic system when the box or damper is operating below particular performance levels. Preferably, the diagnostic system formats the air flow actuator positions and temperature data so that it can be displayed for graphing. The diagnostic data is advantageously stored in the individual controllers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.