Light reflectance based detection
First Claim
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1. A lighting system, comprising:
- one or more lighting devices mounted on a pole and operable to illuminate an outdoor environment;
a photosensor having a narrow field of view, wherein a sensing region associated with said photosensor is directed onto a reflective surface of said pole and configured only to detect light reflected off said reflective surface; and
a controller comprising an input for receiving a signal output from said photosensor, the controller configured to;
detect a light-emitting object in said outdoor environment based on detecting a change in the light reflected off the reflective surface in response to receiving said signal; and
control the one or more lighting devices in response to detecting said light-emitting object.
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Abstract
A lighting system comprising one or more lighting devices mounted on a pole and operable to illuminate an outdoor environment; a photosensor, wherein a sensing region associated with the photosensor is directed onto a surface of the pole to detect light reflected off said surface; and a controller comprising an input for receiving a signal output from the photosensor. The controller is configured to: detect an object in the outdoor environment based on detecting a change in the light reflected off the surface in response to receiving said signal; and control the one or more lighting devices in response to detecting the object.
16 Citations
15 Claims
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1. A lighting system, comprising:
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one or more lighting devices mounted on a pole and operable to illuminate an outdoor environment; a photosensor having a narrow field of view, wherein a sensing region associated with said photosensor is directed onto a reflective surface of said pole and configured only to detect light reflected off said reflective surface; and a controller comprising an input for receiving a signal output from said photosensor, the controller configured to; detect a light-emitting object in said outdoor environment based on detecting a change in the light reflected off the reflective surface in response to receiving said signal; and control the one or more lighting devices in response to detecting said light-emitting object. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method of controlling lighting one or more lighting devices mounted on a pole, the one or more lighting devices operable to illuminate an outdoor environment, the method comprising:
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receiving a signal output from a photosensor having a narrow field of view, wherein a sensing region associated with said photosensor is directed onto a reflective surface of said pole and configured only to detect light reflected off said reflective surface; detecting a light-emitting object in said outdoor environment based on detecting a change in the light reflected off the reflective surface in response to receiving said signal; and controlling the one or more lighting devices in response to detecting said light-emitting object.
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Specification