A PRESENCE DETECTION SYSTEM AND A LIGHTING SYSTEM
First Claim
1. A presence detection system for detecting a living being within an area comprising at least two zones, the system comprising:
- at least two light sources each of them having a different predefined spectrum, a first spectrum and a second spectrum, and each of them radiating light in a different zone, andat least two sensing means sensitive to light of the first predefined spectrum and the second predefined spectrum respectively, wherein each of the sensing means is arranged for detecting light reflected from the living being if present in the zone of the area and for generating a presence signal based on detected light,a processor device for concluding the presence of the living being within the area based on the presence signals.
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Accused Products
Abstract
A presence detection system (1) for detecting a living being (10) within an area (12). 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).
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Citations
12 Claims
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1. A presence detection system for detecting a living being within an area comprising at least two zones, the system comprising:
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at least two light sources each of them having a different predefined spectrum, a first spectrum and a second spectrum, and each of them radiating light in a different zone, and at least two sensing means sensitive to light of the first predefined spectrum and the second predefined spectrum respectively, wherein each of the sensing means is arranged for detecting light reflected from the living being if present in the zone of the area and for generating a presence signal based on detected light, a processor device for concluding the presence of the living being within the area based on the presence signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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Specification