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A presence detection system and a lighting system

A detection system and detection area technology, applied in the field of lighting systems, can solve problems such as limited precision and inability to accurately determine living bodies

Inactive Publication Date: 2013-07-24
KONINK PHILIPS ELECTRONICS NV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The disadvantage of the known system is the limited precision
In particular, such systems are not able to accurately determine in which part of the area the living body is located

Method used

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  • A presence detection system and a lighting system
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  • A presence detection system and a lighting system

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Embodiment Construction

[0022] In the following description of the preferred embodiments, reference is made to the accompanying drawings which form a part hereof. Specific embodiments in which the invention may be practiced are shown by way of illustration in the following description. It is also to be understood that other embodiments may be utilized and structural changes may be made without departing from the scope of the present invention. Note that the same reference numerals will be used to designate the same or similar parts in several embodiments.

[0023] Fig. 1 schematically shows a first exemplary embodiment of a presence detection system according to the invention. In this embodiment, the system comprises two light sources (a first light source 2A and a second light source 2B) for emitting light of a predefined spectrum and two sensing means, which in this embodiment are two light sensors (first light sensor 4A and second light sensor 4B). In this embodiment, the light sensor is equipp...

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Abstract

A presence detection system (1) for detecting a living being (10) within an area (12) is disclosed. The area (12) comprises at least two zones (12A; 12B). The system (1) in total comprises at least two light sources (2A; 2B) each of them having a different predefined spectrum and each of them radiating light in a different zone (12A; 12B). The system comprises at least two sensing means (4A; 4B) sensitive to light of the first predefined spectrum and the second predefined spectrum respectively. Each of the sensing means (4A; 4B) is arranged for detecting light reflected from the living being (10) if present in the zone (12A; 12B) of the area (12) and for generating a presence signal (14A; 14B) based on detected light. The system comprises a processor device (8) that concludes the presence of the living being (10) within the area (12) in a zone wise way based on the presence signals. Such presence detection system provides relatively precise presence detection. The invention also relates to a lighting system comprising the above mentioned presence detection system (1).

Description

field of invention [0001] The present invention relates to a presence detection system for detecting living beings, such as humans or animals, within an area. The system comprises a light source for emitting a predefined spectrum of light and a light sensor equipped with a spectral filter for filtering the predefined spectrum of light. The light sensor is arranged for detecting light reflected from living beings present in the area through the spectral filter and for generating a presence signal based on the detection result. The system further includes a processor device for inferring the presence of the living being based on the presence signal. [0002] The invention also relates to a lighting system comprising the presence detection system mentioned above. Background technique [0003] An example of such a system is disclosed in patent application WO 97 / 26824. This patent application discloses a device for monitoring a living body (eg, an infant) that involves transmi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G08B13/181G08B21/22
CPCA61B5/0059G08B13/181G01V8/20G08B21/22
Inventor M.T.约翰逊M.范多尔伦G.森尼尼
Owner KONINK PHILIPS ELECTRONICS NV
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