Long-range motion detection for illumination control
First Claim
1. An illumination system, comprising:
- a two-dimensional non-Passive Infrared (non-PIR) imager that produces image data representative of images of an area, the images of the area acquired across at least part of a visible portion of an electromagnetic spectrum;
a light source operable to provide at least two levels of illumination in addition to a zero level of illumination in at least a portion of the area, wherein a first level of illumination corresponds to a non-zero level of illumination and a second level of illumination corresponds to a higher level of illumination than the first level of illumination;
a controller communicably coupled to the non-PIR imager and to a nontransitory storage medium that includes controller executable instructions which, when executed by the controller, cause the controller to;
receive data indicative of a dawn event on each of a plurality of days that precede a current day;
receive data indicative of a dusk event on each of the plurality of days that precede the current day;
determine a first solar time associated with an expected dawn event for the current day based on the received data indicative of the dawn event on each of the plurality of days that precede the current day;
determine a second solar time associated with an expected dusk event for the current day based on the received data indicative of the dusk event on each of the plurality of days that precede the current day;
logically associate a first period which is indicative of a daylight period with solar times of the current day between the first solar time and the second solar time and a second period which is indicative of a non-daylight period with solar times of the current day between the second solar time and the first solar time;
receive image data from the non-PIR imager;
detect at least one ambient environmental characteristic of the area indicative of a presence of an object or an imminent presence of the object in the area based at least in part on the image data received from the non-PIR imager;
activate the light source at the first level of illumination for at least a portion of the second period; and
activate the light source at the second level of illumination for at least a portion of the second period responsive to detecting the at least one ambient environmental characteristic of the area indicative of the presence of the object in the area or the imminent presence of the object in the area.
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Abstract
An illumination system and methods to control a light source are provided. An illumination system includes a light source, a two-dimensional non-Passive Infrared (non-PIR) imager, and a controller. The light source provides at least two levels of illumination. The non-PIR imager images an area and to produce image data representative of images across at least part of a visible portion of an electromagnetic spectrum. The controller is communicatively coupled to receive the image data from the non-PIR imager and process the received image data to detect at least one ambient environmental characteristic of the area in the part of the visible portion of the electromagnetic spectrum, where the ambient environmental characteristic is indicative of a presence or imminent presence of a body in the area. The controller is also coupled to control operation of the light source based on, at least in part, detection of the ambient characteristic of the environment.
220 Citations
23 Claims
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1. An illumination system, comprising:
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a two-dimensional non-Passive Infrared (non-PIR) imager that produces image data representative of images of an area, the images of the area acquired across at least part of a visible portion of an electromagnetic spectrum; a light source operable to provide at least two levels of illumination in addition to a zero level of illumination in at least a portion of the area, wherein a first level of illumination corresponds to a non-zero level of illumination and a second level of illumination corresponds to a higher level of illumination than the first level of illumination; a controller communicably coupled to the non-PIR imager and to a nontransitory storage medium that includes controller executable instructions which, when executed by the controller, cause the controller to; receive data indicative of a dawn event on each of a plurality of days that precede a current day; receive data indicative of a dusk event on each of the plurality of days that precede the current day; determine a first solar time associated with an expected dawn event for the current day based on the received data indicative of the dawn event on each of the plurality of days that precede the current day; determine a second solar time associated with an expected dusk event for the current day based on the received data indicative of the dusk event on each of the plurality of days that precede the current day; logically associate a first period which is indicative of a daylight period with solar times of the current day between the first solar time and the second solar time and a second period which is indicative of a non-daylight period with solar times of the current day between the second solar time and the first solar time; receive image data from the non-PIR imager; detect at least one ambient environmental characteristic of the area indicative of a presence of an object or an imminent presence of the object in the area based at least in part on the image data received from the non-PIR imager; activate the light source at the first level of illumination for at least a portion of the second period; and activate the light source at the second level of illumination for at least a portion of the second period responsive to detecting the at least one ambient environmental characteristic of the area indicative of the presence of the object in the area or the imminent presence of the object in the area. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method of controlling a light source, the method comprising:
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receiving, by the controller, data indicative of a dusk event on each of a plurality of days that precede a current day; receiving, by the controller, data indicative of a dawn event on each of the plurality of days that precede a current day; determining, by the controller, a first solar time associated with an expected dusk event for the current day based at least in part received data indicative of the dusk event on each of the plurality of days that precede the current day; determining, by the controller, a first solar time associated with a dawn event for the current day based at least in part received data indicative of the dawn event on each of the plurality of days that precede the current day; logically associating, in a non-transitory storage medium communicably coupled to the controller, a first period indicative of a daylight period with solar times of the current day between the first solar time and the second solar time; and
, a second period indicative of a non-daylight period with solar times of the current day between the second solar time and the first solar time;receiving, by the controller from a non-Passive Infrared (non-PIR) imager, image data representative of an image of an area, the image data acquired by the non-PIR imager using at least a portion of a visible electromagnetic spectrum; detecting, by the controller, at least one ambient environmental characteristic of the area indicative of a presence of an object in the area or an imminent presence of the object in the area using the received image data; and controlling operation of a light source communicably coupled to the controller by; activating the light source at a first level of illumination that is greater than a zero-level of illumination for at least a portion of the second period; and activating the light source at a second level of illumination that is greater than the first level of illumination for at least a portion of the second period responsive to detecting the at least one ambient environmental characteristic indicative of the presence of the object in the area or the imminent presence of the object in the area. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A lighting system controller, comprising:
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at least one processor; a nontransitory storage medium communicably coupled to the at least one processor that includes processor-executable instructions, which when executed cause the at least one processor to; receive data indicative of a dawn event on each of a plurality of days that precede a current day; receive data indicative of a dusk event on each of the plurality of days that precede the current day; determine, based at least in part on the received data indicative of the dawn event on each of the plurality of days that precede the current day, a first solar time associated with a dawn event for the current day; determine, based at least in part on the received data indicative of the dusk event on each of the plurality of days that precede the current day, a second solar time associated with a dusk event for the current day; logically associate, in the non-transitory storage medium, a first period that is indicative of a daylight period with solar times of the current day between the first solar time and the second solar time; and
, a second period which is indicative of a non-daylight period with solar times of the current day between the second solar time and the first solar time;detect, based at least in part on image data representative of a plurality of images of an area across at least part of a visible portion of an electromagnetic spectrum that are received from a communicably coupled non-PIR imager, at least one ambient environmental characteristic indicative of a presence of an object in the area or an imminent presence of the object in the area; activate the communicably coupled light source at a first level of illumination that is greater than a zero-level of illumination for at least a portion of the second period; and responsive to detecting the at least one environmental characteristic indicative of the presence of the object in the area or the imminent presence of the object in the area, activate the communicably coupled light source at a second level of illumination that is greater than the first level of illumination for at least a portion of the second period. - View Dependent Claims (23)
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Specification