Adaptable control of HVAC systems
Patent 5170935 Issued on December 15, 1992. Estimated Expiration Date: 
November 27, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 27, 2011. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesAir conditioner for automobiles Air conditioner for automobiles Air conditioner Patent #: 4858824 InventorsApplicationNo. 799086 filed on 11/27/1991US Classes:236/44C, Humidity and temperature control236/91C, With diverse sensor, e.g., humidity, pressure236/94, With indicator or alarm700/31, Having adjustment of model (e.g., update)700/276HVAC controlExaminersPrimary: Tanner, Harry B.Attorney, Agent or FirmForeign Patent References
International ClassesG05D 023/00G05B 013/04 AbstractA system for providing adaptable control of an HVAC system which regulates environmental conditions within an enclosed area. In a preferred embodiment, the apparatus and method of the present invention measures selected environmental variables in the enclosed area, calculates a value of a comfort index which is a function of the values of the selected environmental variables and a plurality of parameters that predicts a thermal sensation rating of an occupant. The system receives an actual thermal sensation rating from the occupant and compares the predicted thermal sensation rating with the actual thermal sensation rating to determine a difference between the predicted thermal sensation rating and the actual thermal sensation rating. The system uses a parameter estimation process that estimates the value of at least one parameter in the plurality of parameters to reduce the difference between the predicted thermal sensation rating and the actual thermal sensation rating and then changes the value of at least one parameter, if necessary or desired. In one embodiment, the system repeats these steps until the thermal sensation rating provided by the occupant is substantially equal to neutral thermal sensation. In a preferred embodiment, the comfort index is an explicit, linearly parameterized function which represents the non-linear behavior of environmental variables.Other References
Field of SearchWith indicator or alarmWith diverse sensor, e.g., humidity, pressure Heating and cooling Hot and cold HUMIDITY CONTROL Humidity and temperature control Electrically actuated With correlated manual or external operator and condition sensing means, e.g., cutoff or reset Selective Manual reset or sensor operates additional element Operatively correlated with automatic control Diverse function indicators or testers WITH ALARM, INDICATOR, SIGNAL, REGISTER, RECORDER, TEST OR INSPECTION MEANS | |
