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Detection based on light reflectance

A sensing area and lighting chamber technology, applied in the field of detection based on light reflectivity, can solve problems such as expensive, limited observation area, and unfavorable object detection

Active Publication Date: 2016-11-16
SIGNIFY HLDG BV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Narrow field of view (FOV) sensors are inexpensive to provide, but disadvantageously for object detection there is a strong requirement that the sensor be oriented at a specific location to target a narrow FOV such that objects will be detected, and the viewing area is very limited
Therefore, known solutions require the sensor to have a wide FOV to achieve the required responsivity, which is expensive to provide

Method used

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  • Detection based on light reflectance
  • Detection based on light reflectance
  • Detection based on light reflectance

Examples

Experimental program
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Embodiment Construction

[0025] First refer to figure 1 , Which illustrates a schematic block diagram of the lighting system 100.

[0026] The lighting system 100 includes a controller 1 coupled to the photosensor 2 and one or more lighting devices 4 in the form of one or more luminaires operable to emit light to illuminate the environment of the lighting system 100.

[0027] The one or more luminaires 4 include at least one light source for providing light. The at least one light source may include any suitable light source, such as, for example, a high / low pressure gas discharge source, a laser diode, an inorganic / organic light emitting diode (LED), an incandescent source, or a halogen source. The light source may be a single light source, or may include multiple light sources, such as multiple LEDs, which may for example form a light source array that collectively operates as a single light source.

[0028] The photosensor 2 includes one or more photosensitive components. Photosensitive components may i...

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PUM

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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.

Description

Technical field [0001] The present disclosure relates to the sensing of objects within a space zone. For example, sensing can be used to control one or more outdoor lighting devices depending on the detected occupancy in the outdoor space. Background technique [0002] In current lighting applications, energy efficiency is an increasingly important issue. One possible way to reduce the energy consumption of the lighting system is to cut off or dim one or more of its light sources when no objects (ie, people or vehicles) exist in the space, and turn on the opposite when the objects move into the space ( Multiple) lights. In order to do so, the presence of objects in the relevant space must be detected. Different types of motion sensors are currently in use. [0003] Due to its advantages of reducing the energy consumption of its light source(s) and thereby improving cost savings and the lifespan of the light source(s), there is a strong need for sensor-driven light control syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05B37/02G01S17/04
CPCH05B47/11H05B47/10F21S8/085G01S17/003G01S17/58G01S17/88G01S7/003G01S7/493F21V23/0471G01S17/04Y02B20/40H05B47/115G01J1/42
Inventor R.拉贾戈帕兰H.布罗尔斯
Owner SIGNIFY HLDG BV