Patent ID: 6408228
Filing Date: 2002-06-18
Classification: F24F,G05D

Abstract:
In an environmental control system having a plurality of devices for altering a condition of an environment inside a building, a control system for operating the plurality of devices comprising:a plurality of feedback controllers each operatively coupled to control a different one of the plurality devices and implementing one of a plurality of feedback control loops; a finite state machine controller having a plurality of control states and responding to sets of transition data by determining which one of the plurality of control states is active at any given point in time, wherein the one of the plurality of control states that is active determines which of the plurality of controllers is active at that given point in time; and a memory for storing parameters for the plurality of feedback control loops, wherein the plurality of controllers operate in response to the control parameters read from the memory, and wherein the memory also stores the state transition data.