Lighting control system & three Way occupancy sensor

Abstract

There is disclosed a sensor which, when integrated into a dimming system, can turn the dimmer on and off, and vice versa. As an example, lights which are connected to the dimmer can be turned on by using the dimmer, the light level can be adjusted to provide a level of illumination desired by an occupant, and the sensor can turn off the lights when the room is vacant. The sensor here disclosed provides sensing functionality to a dimming system, and the sensors can be remotely controlled by other sensors, dimmers and dimmer remotes.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

Other aspects, features and advantages of the present invention will become more fully apparent from the following detailed description, the appended claim, and the accompanying drawings in which similar elements are given similar reference numerals where:

FIG. 1 is a wiring diagram of two 3-way switches coupled together;

FIG. 2 is a wiring diagram of a sensor and a sensor remote connected to control a single light;

FIG. 3 is a flow chart of the operation of the embodiment shown in FIG. 2;

FIG. 4 is a schematic of a power supply for use with the embodiments disclosed;

FIG. 5 is a schematic of a sensing and control circuit;

FIG. 6 shows an embodiment where two sensors are integrated into a dimming system for a single load;

FIG. 7 shows another embodiment using one sensor and one remote for a single load;

FIG. 8 shows still another embodiment where a sensor is used as a remote control of a dimmer for a single load; and

FIG. 9 shows still another embodiment where two independent loads are operated as one.

Claims

1. A lighting control system for controlling at least one light circuit in a room comprising: a first sensor; anda second sensor coupled to said first sensor with a line voltage communication link; wherein said first sensor and said second sensor act together to provide power to at least one light circuit upon detection of occupancy in an area by either of said sensors.

2. The lighting control system of claim 1 wherein said first sensor is a wall box occupancy sensor.

3. The lighting control system of claim 1 wherein said second sensor is a sensor remote.

4. The lighting control system of claim 3 wherein said first sensor and said remote sensor are each coupled to control the at least one light circuit to provide multiple location automatic on off control to the at least one light circuit.

5. The lighting control system of claim 4 wherein one dimmer is coupled to provide dimming to the at least one light circuit.

6. The lighting control system of claim 3 comprising first and second dimmers coupled to provide multiple location dimming to at least one light circuit.

7. The lighting circuit of claim 6 wherein at least one of said dimmers has manual on off controls to manually provide power to the at least one light circuit and interrupt power to the at least one light circuit.

8. The lighting circuit of claim 7 wherein said at least one light circuit comprises two light circuits that operate as a single light circuit.

9. The lighting circuit of claim 6 wherein said dimmers are manually on automatic off dimmers.

10. The lighting circuit of claim 6 wherein said dimmers are automatic on off dimmers.

11. The lighting control system of claim 1 wherein said first sensor is a wall box occupancy sensor and said second sensor is a sensor remote.

12. The lighting control system of claim 2 wherein said wall box occupancy sensor has an amplification and filtering circuit, a microprocessor, a load control device, and a visible indicator to indicate occupancy detection.

13. The lighting control system of claim 3 wherein said sensor remote has an amplification and filtering circuit, a microprocessor, and a visible indicator to indicate occupancy detection.

14. The lighting control system of claim 12 wherein said sensor remote has an amplification and filtering circuit, a microprocessor and a visible indicator to indicate occupancy detection and further comprising: a dimmer coupled to said wall box occupancy sensor and said sensor remote via the line voltage communication link.

15. The lighting control system of claim 14 further comprising, a second dimmer coupled to said wall box occupancy sensor, said sensor remote and said first dimmer via the line voltage communication link wherein manual and automatic on-off control and multiple location dimming control of a single light circuit is provided.

16. The lighting control system of claim 14 further comprising: a second dimmer coupled to said wall box occupancy sensor, said sensor remote and said first dimmer via the line voltage communication link wherein manual and automatic on off control and multiple location dimming control of a single light circuit is provided.

17. The lighting control system of claim 14 further comprising: a second dimmer coupled to said wall box occupancy sensor, said sensor remote and said first dimmer via the line voltage communication link wherein manual and automatic on off control and multiple location dimming control of two discrete lighting circuits are controlled as a single light circuit.

18. The lighting control system of claim 1 wherein said first sensor is an ultrasonic sensor.

19. The lighting control system of claim 1 wherein said first sensor is an acoustical sensor.

20. The lighting control system of claim 1 wherein said first sensor is a microwave sensor.

21. The lighting control system of claim 1 wherein said voltage communication link comprises phase and neutral line voltage conductors.

22. The lighting control system of claim 21 wherein said neutral is connected directly to said sensors.

23. The lighting control system of claim 21 wherein said neutral is connected through said at least one lighting circuit to said sensors.

24. The lighting control system of claim 3 wherein said first and/or second sensor is of the automatic on automatic off type.

25. The lighting control system of claim 3 wherein said first and/or second sensor is of the manual on automatic off type.

26. A lighting control system comprising wall box occupancy sensors with line voltage communication there between, wherein said occupancy sensors act together to provide field of view detection for control of a single load.

27. A lighting control system for controlling at least one light circuit having at least two loads comprising: a sensor coupled to provide power to a first load;a dimmer having a manual on-off control coupled to control a second load and coupled to said sensor with a two way line voltage communication link wherein said sensor, upon detection of occupancy in an area, provides power to said first and second loads.

28. The lighting control system of claim 27 wherein said dimmer is coupled to interrupt power to said first and second loads upon being manually set to its off condition.

29. The lighting control system of claim 27 wherein said dimmer is coupled to provide power to said first and second loads upon being manually set to its on condition.

30. The lighting control system of claim 27 wherein said sensor is an automatic on-automatic off sensor.

31. The lighting control system of claim 27 wherein said sensor is a manual on-automatic off sensor.