Supervisory control unit for electrical equipment
First Claim
1. A supervisory control unit (10) having particular utility for controlling one or more lighting and heating and air conditioning circuit/equipment for a structure, comprising:
- an occupant detection circuit means (13, 32, 33, 34, 35, 38,
39) for detecting the presence of one or more persons within the structure, and for providing a light activating signal (58) and/or an HVAC ON-signal (62) indicative thereof;
a cycle timer circuit means (15) operatively coupled (48,
73) to said occupant detection circuit means for enabling and disabling said occupant detection circuit means to generate said HVAC ON-signal (62) during one or more preselected duty cycle duration periods without the detecting of the presence of a person within the structure, so that excessive temperature variations within the structure is abridged during periods when the structure is unoccupied; and
a temperature limit sensor circuit means (14) operatively coupled (42) to said occupant detection circuit means and to said cycle timer circuit means for overriding said cycle timer circuit means and to provide an enable signal (40) to effect generation of said HVAC ON-signal (62) when temperature within the structure exceeds an upper and lower preset limit.
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Accused Products
Abstract
A supervisory control unit for lighting, heating and air conditioning equipment containing an occupancy sensor, a temperature limit detector, an entry delay detector and incorporating time cycle operation intended to limit the use of said equipment for the purposes of energy conservation.
The unit outputs low voltage control signals that by means of external switching devices makes or interrupts the power and/or control signals normally connected to the lighting, heating and air conditioning equipment, thereby limiting the use of said equipment unless certain criteria are met.
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Citations
13 Claims
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1. A supervisory control unit (10) having particular utility for controlling one or more lighting and heating and air conditioning circuit/equipment for a structure, comprising:
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an occupant detection circuit means (13, 32, 33, 34, 35, 38,
39) for detecting the presence of one or more persons within the structure, and for providing a light activating signal (58) and/or an HVAC ON-signal (62) indicative thereof;a cycle timer circuit means (15) operatively coupled (48,
73) to said occupant detection circuit means for enabling and disabling said occupant detection circuit means to generate said HVAC ON-signal (62) during one or more preselected duty cycle duration periods without the detecting of the presence of a person within the structure, so that excessive temperature variations within the structure is abridged during periods when the structure is unoccupied; anda temperature limit sensor circuit means (14) operatively coupled (42) to said occupant detection circuit means and to said cycle timer circuit means for overriding said cycle timer circuit means and to provide an enable signal (40) to effect generation of said HVAC ON-signal (62) when temperature within the structure exceeds an upper and lower preset limit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An on/off discrete control circuit for a heating unit and an air conditioning unit and a light fixture to control the environment within a room with detection of a person, in combination, comprising:
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an occupant detector means which includes a passive motion detector (13) operatively coupled to a bandpass filter and gain circuit (34) operatively coupled to a lowpass filter and gain circuit (33) operatively coupled to a threshold detector (34) operatively coupled to an occupancy latch (35) and a timeout control circuit (36), said occupancy latch being operatively coupled to an entry delay detector (16) and a timer inhibit OR circuit (32) and an output OR circuit (38) and to said timeout control circuit (36), said timeout control circuit (36) being operatively coupled to a reset OR circuit (37), said reset OR circuit (37) being operatively coupled to said occupancy latch (35), an output OR circuit (38) operatively coupled between an output of said occupancy latch (35) and an output amplifier (39), for providing a HVAC ON-signal (62) and a light activating signal (58) with detection of a person within the room; a cycle timer means (15,
32) operatively coupled to said occupant detector means for enabling and disabling said occupant detector means generation of said HVAC ON-signal for a predetermined duty cycle;a temperature limit sensor means (14) operatively coupled to said occupant detector means and to said cycle timer means (15,
32) for effecting generation of said HVAC ON-signal (62) with detection of a temperature exceeding a predetermined upper and lower limit with the room; and
a powerup reset circuit (23) operatively coupled to said cycle timer means and to said reset OR circuit (37). - View Dependent Claims (10, 11, 12, 13)
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Specification