Energy savings and improved security through intelligent lighting systems

• US 9,215,781 B2
• Filed: 04/16/2008
• Issued: 12/15/2015
• Est. Priority Date: 04/16/2008
• Status: Active Grant

• Current Assignee: Motorola Solutions, Inc.
• Original Assignee: Avo Usa Holding 2 Corporation (Motorola Solutions, Inc.)
• Inventors: Marman, Douglas H.
• Primary Examiner(s): TANG, KAREN C
• Application Number:
  US12/104,281
• Publication Number:
  US 20090262189A1
• Time in Patent Office: 2,799 Days
• US Class Current: 1/1
• CPC Class Codes: G06T 7/248 involving reference images or patches
• CPC Class Codes: G08B 13/19613 Recognition of a predetermined image pattern or behaviour pattern indicating theft or intrusion
• CPC Class Codes: H04L 43/00 Arrangements for monitoring or testing data switching networks
• CPC Class Codes: H04L 63/00 Network architectures or network communication protocols for network security cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00; network architectures or network communication protocols for wireless network security H04W12/00; security arrangements for protecting computers or computer systems against unauthorised activity G06F21/00
• CPC Class Codes: H05B 45/00 Circuit arrangements for operating light-emitting diodes [LED]
• CPC Class Codes: H05B 47/125 by using cameras
• CPC Class Codes: Y02B 20/40 Control techniques providing energy savings, e.g. smart controller or presence detection

Abstract

An intelligent lighting system employs energy efficient outdoor lighting and intelligent sensor technology in cooperation with video analytics processing. The lighting system selectively illuminates outdoor spaces and identifies and evaluates events in a scene monitored by a video camera, thereby to facilitate proactive and appropriate security responses to those events. Selective use of advanced lighting fixtures may significantly reduce costs of lighting areas that are monitored by security systems such as streets, public parks, and parking lots, while simultaneously improving security, safety, and traffic control. Energy savings alone, for a properly designed system, are estimated at 50%-90% of current usage. When combined with remote monitoring, such systems may prevent accidents and criminal activity.

Claims

1. An intelligent, energy efficient system for illumination, comprising:

a first image sensor placed at a location in a spatial region to monitor a scene in a vicinity of the location where the first image sensor is placed, the first image sensor exhibiting low light intensity sensitivity and acquiring mega-pixel resolution image data corresponding to the scene monitored, the spatial region being not enclosed;

a first controllable light source operatively associated with the first image sensor and mounted to illuminate a light-controlled area of the spatial region, the light source controllable to assume extended states of illumination including an extended state of low light intensity illumination of the light-controlled area and an extended state of high light intensity illumination of the light-controlled area, and the first controllable light source characterized by rapid speed of switching from the extended state of low light intensity illumination to the extended state of high light intensity illumination;

video analytics responsive to the acquired mega-pixel resolution image data corresponding to the scene to detect motion of one or more blobs, to further detect an event in the scene based on the motion of the one or more blobs, and to provide detected scene information that is indicative of the event in the scene and that efficiently identifies when the extended state of illumination should be changed; and

a first controller responsive to the detected scene information to deliver a light control signal to the first controllable light source to control the first controllable light source'"'"'s extended state of illumination in accordance with the event detected by processing performed by the video analytics.

2. The system of claim 1, further comprising:

one or more additional controllable light sources, wherein the first controllable light source and the one or more additional controllable light sources are controllable to assume extended states of illumination, wherein each controllable light source receives a control signal from the first controller, and wherein each controllable lights source is placed at different locations in the spatial region; and

a communication medium with which the controller and the controllable light sources are operatively associated to deliver the light control signals to the controllable light sources to control their extended states of illumination at their respective locations in the spatial region in accordance with the event detected.

3. The system of claim 1, and further comprising:

one or more additional image sensors, the first image sensor and the one or more additional image sensors placed at different locations in the spatial region to monitor scenes in vicinities of the locations where the image sensors are placed and acquire image data corresponding to the scenes monitored;

one or more additional controllable light sources controllable to assume extended states of illumination, wherein the first controllable light source and the one or more additional controllable light sources are operatively associated with corresponding ones of at least some of the image sensors placed in the spatial region;

a communication network with which the video analytics is operatively associated to provide the detected scene information and with which the controllable light sources are operatively associated; and

one or more controllers, wherein one of the controllers includes the first controller, and, in response to the detected scene information provided to the communication network, each of the controllers delivers one or more light control signals to, respectively, one or more of the controllable light sources to control their extended states of illumination at their associated locations in the spatial region in accordance with the event detected.

4. The system of claim 1, further comprising:

a communication medium with which the first controller and the first controllable light source are operatively associated to deliver the light control signal to the first controllable light source to control the first controllable light source'"'"'s extended state of illumination in accordance with the event detected; and

a central monitoring station operatively connected to the communication medium to allow for centralized monitoring of the detected scene information and system diagnostic information.

5. The system of claim 4, in which the first controller further provides through the communication medium to the central monitoring station video clips of the acquired image data representing the event detected.

6. The system of claim 4, further comprising audio devices placed at different locations in the spatial region and actuatable in response to the event detected.

7. The system of claim 1, further comprising audio devices placed at different locations in the spatial region and adapted to emit a pre-recorded annunciation in response to the event detected.

8. The system of claim 1, in which the image sensor collects self-diagnostic information indicating system operational failure.

9. The method of claim 8, wherein the video analytics are further responsive to detect a failure of the first controllable light source to change the extended state of low light intensity illumination to the extended state of high light intensity illumination in response to the light control signal.

10. The system of claim 1, in which the first controllable light source is of a type that transitions in less than one second from the extended state of low light intensity illumination of the light-controlled area to the extended state of high light intensity illumination of the light-controlled area.

11. The system of claim 10, in which the controllable light source includes a high efficiency LED lamp.

12. The system of claim 1, in which the first image sensor is of a CMOS type.

13. The system of claim 1, in which the first image sensor is of an infrared type.

14. The system of claim 1, in which the image sensor is of a CCD type.

15. The system of claim 1, in which the image sensor is a component of a video surveillance camera.

16. The system of claim 1, in which the event detected by processing performed by the video analytics includes estimated speed of a vehicle passing through the spatial region, and in which the rapid speed of switching of the controllable light source is sufficient to illuminate the spatial region as the vehicle passes through the spatial region.

17. The system of claim 16, in which the detected event including estimated speed includes detection of a stationary vehicle.

18. The system of claim 16, in which the detected event including estimated speed includes direction of travel of the vehicle or person.

19. The system of claim 1, in which the state of low light intensity illumination is a nonillumination state.

20. The method of claim 1, further comprising a second image sensor placed at a location outside the light-controlled area, wherein the second image sensor is capable of sensing far infrared light and acquiring far infrared image data;

and wherein the video analytics are further responsive to the far infrared image data.

21. The method of claim 1, wherein the video analytics are capable of distinguishing between background lighting changes and motion of objects in the scene.

22. An energy efficient method of intelligent illumination, comprising:

placing multiple image sensors at different locations in a non-enclosed area to acquire image data corresponding to scenes in vicinities of the different locations, one or more of the multiple image sensors exhibiting low light intensity sensitivity, and one or more image sensors having mega-pixel resolution;

performing video analytics processing of the acquired image data to detect an object, detect a motion of the object, and detect an event occurring at one or more of the scenes that efficiently identifies when an extended state of illumination should be changed; and

controlling the extended state of illumination of multiple light sources spatially associated with at least some of the scenes in accordance with the event detected by processing performed by the video analytics, the multiple light sources mounted in raised positions to illuminate the scenes in vicinities of the different locations with which the multiple light sources are spatially associated, each of the multiple light sources controllable to assume extended states of illumination including an extended state of low light intensity illumination of one or more of the scenes and an extended state of high light intensity illumination of one or more of the scenes, and each of the multiple light sources characterized by rapid speed of switching from the extended state of low light intensity illumination to the extended state of high light intensity illumination.

23. The method of claim 22, in which the non-enclosed area is an interior space of a large enclosure.

24. The method of claim 22, in which the non-enclosed area is an outdoor region.

25. The method of claim 22, in which:

the non-enclosed area is a thoroughfare, and the multiple light sources include light fixtures positioned at the different locations along the thoroughfare and associated with different ones of the multiple image sensors;

the detection of the event performed by video analytics processing further includes detection of motion of a vehicle proceeding on a path of travel along the thoroughfare; and

the controlling of extended states of illumination of the light fixtures includes selectively illuminating the light fixtures to illuminate different scenes in vicinities of the different locations with which the light fixtures are spatially associated on the travel path of the vehicle as it proceeds along the thoroughfare.

26. The method of claim 22, further comprising activating an audio device in response to the occurrence of the event detected by the performance of video analytics processing.

27. The method of claim 22, in which the event detected further includes a presence of a human being or a vehicle in the non-enclosed area, and in which the controlling of extended states of illumination includes illuminating the light sources spatially associated with at least some of the scenes and not illuminating the light sources spatially associated with remaining ones of the scenes.

28. The method of claim 22, in which the image sensors are of an infrared type, in which the controlling extended states of illumination of light sources includes maintaining them in the extended state of low light intensity illumination in absence of detection of an occurrence of the event, and in which the controlling extended states of illumination of light sources includes actuating one or more of the light sources to the extended state of high light intensity illumination in response to detection of an occurrence of the event.

29. The method of claim 22, in which the controllable light source is of a type that transitions in less than one second from the extended state of low light intensity illumination to the extended state of high light intensity illumination.

30. The method of claim 29, in which the controllable light source includes a high efficiency LED lamp.

31. The method of claim 22, in which the event includes recognizing a predefined object and tracking movement of the predefined object.

32. The method of claim 22, in which the event detected by processing performed by the video analytics includes estimated speed of an object passing at the estimated speed through the non-enclosed area, and in which the controlling the extended states of illumination of light sources includes switching with sufficient speed the light sources to illuminate the non-enclosed area as the object passes through the non-enclosed area.

33. The method of claim 32, in which the detected event including estimated speed includes detection of a stationary object.

34. The method of claim 32, in which the detected event including estimated speed includes direction of travel of the object.

35. The method of claim 22, in which the extended state of low light intensity illumination is a nonillumination state.