Occupancy responsive temperature control system
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Abstract
A room temperature control system includes a transmitter-receiver unit for producing an acoustic standing wave pattern in a room and for producing a signal when that pattern is disturbed by motion in the room. A logic circuit provides timing signals and interprets a pattern disturbance signal to determine whether it evidences room occupancy. The timing and interpreting sequence is initiated by a switch which detects opening and closing of the room door. Temperature control by the room thermostat is permitted when the room is occupied and control within a wider range can be provided when it is not occupied.
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Current AssigneeFlair International Corporation
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Original AssigneeFlair International Corporation
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InventorsCarrell, Edwin A., Spivey, David H.
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Primary Examiner(s)Wayner, William E.
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Application NumberUS06/937,018Time in Patent Office1,141 DaysField of Search236/47, 236/94, 236/46 R, 165/11 R, 165/12US Class Current165/11.1CPC Class CodesG05D 23/1902 characterised by the use of...
