Kurt K Federspiel

US Patent:

8634962, Jan 21, 2014

Filed:

Aug 20, 2010

Appl. No.:

12/860820

Inventors:

Clifford C. Federspiel - El Cerrito CA, US
Kurt Federspiel - Roseville CA, US
Jerry Chin - Mountain View CA, US

Assignee:

Vigilent Corporation - El Cerrito CA

International Classification:

G05D 23/00

US Classification:

700276, 700300

Abstract:

Systems, apparatus, and methods for controlling environmental maintenance modules (e. g. HVAC units) using sensors are provided. Values measured by the sensors can be used to determine a change in operation levels of the modules to keep the sensor values within a desired range. For example, a stopped module can be increased or started for more cooling when a sensor temperature is too hot. The module predicted to have the greatest effect on the temperature of hot sensor can be started. A transfer matrix, which provides a relation between a change in operation level and resulting sensor changes, can be used to perform the above predictions. As another example, a module can be stopped (or otherwise have an operation level decreased), if the sensor temperatures are within range, and the decrease in operation level is predicted not to cause an out-of-range condition.