Environmental control system for a multiple room structure

An environmental control system for a multiple room structure having an independently actuatable heating and cooling device in each of said rooms, said system operating by monitoring the ambient air temperature in each of said rooms and controlling the operation of each of said heating and cooling devices to achieve a desired ambient air temperature in each of said rooms, said system comprising:

• a. a room status indicator for indicating the occupied or vacant status of each of said rooms;
• b. a control unit for permitting an operator to assign heating mode and cooling mode temperature limits to each of said rooms;
• c. a temperature sensing and control unit positioned in each of said rooms and coupled to said heating and cooling device in each of said rooms for measuring the ambient room air temperature and determining the operating mode of said heating and cooling device, and for controlling the operating mode of said heating and cooling device in response to a control signal, said temperature sensing and control unit including first temperature measurement means for measuring the ambient air temperature in said room and second temperature measurement means for measuring the temperature of the conditioned air discharged from said heating and cooling device;
• and
• d. processor means coupled to said room status indicator, to said control unit and to each of said temperature sensing and control units for determining the desired ambient room air temperature for each room and for transmitting an appropriate control signal to each of said temperature sensing and control units to continuously control each of said heating and cooling devices to achieve the desired ambient room air temperature in each of said rooms.