System and method for detecting the passage of a person or an object through an entry-exit of delimited space
First Claim
1. A system for detecting the passage of a person or an object through an entry-exit of a delimited space, the system comprising:
- a detection device associated with said delimited space and comprising transmission means for transmitting first and second electromagnetic signals in respective spatially separate and partially overlapping first and second communication regions each crossing an entry-exit zone defined by said entry-exit;
a portable electronic unit adapted to equip said person or object and comprising receiver means for receiving said first and second electromagnetic signals transmitted by said transmission means; and
means for detecting the direction of passage through said entry-exit of a person or an object equipped with a portable electronic unit as a function of the reception of said first and second electromagnetic signals,wherein said first and second electromagnetic signals are transmitted substantially in phase at the same frequency and each comprises an identical message portion, one of said first and second electromagnetic signals further comprising an additional message portion identifying the corresponding communication region, transmission of the other of said first and second electromagnetic signals being interrupted during the transmission of said additional message portion.
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Accused Products
Abstract
There are described a system and a method of detecting the passage of persons or objects through an entry-exit (4) of a delimited space (2). The direction of passage is detected on the basis of the reception, by a portable electronic unit (40) with which the person or the object is equipped, of first and second electromagnetic signals (a, b) respectively transmitted in respective spatially separate and partially overlapping first and second communication regions (A, B) each crossing an entry-exit zone (32) defined by the entry-exit.
The first and second electromagnetic signals are transmitted substantially in phase at the same frequency and each comprises an identical message portion (100), one of said first and second electromagnetic signals further comprising an additional message portion (150) identifying the corresponding communication region (A, B), transmission of the other of said first and second electromagnetic signals being interrupted during the transmission of said additional message portion.
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Citations
13 Claims
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1. A system for detecting the passage of a person or an object through an entry-exit of a delimited space, the system comprising:
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a detection device associated with said delimited space and comprising transmission means for transmitting first and second electromagnetic signals in respective spatially separate and partially overlapping first and second communication regions each crossing an entry-exit zone defined by said entry-exit; a portable electronic unit adapted to equip said person or object and comprising receiver means for receiving said first and second electromagnetic signals transmitted by said transmission means; and means for detecting the direction of passage through said entry-exit of a person or an object equipped with a portable electronic unit as a function of the reception of said first and second electromagnetic signals, wherein said first and second electromagnetic signals are transmitted substantially in phase at the same frequency and each comprises an identical message portion, one of said first and second electromagnetic signals further comprising an additional message portion identifying the corresponding communication region, transmission of the other of said first and second electromagnetic signals being interrupted during the transmission of said additional message portion. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of detecting the passage of a person or an object through an entry-exit of a delimited space, the method comprising:
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transmitting first and second electromagnetic signals in respective spatially separate and partially overlapping first and second communication regions each crossing an entry-exit zone defined by said entry-exit; receiving said first electromagnetic signal and/or said second electromagnetic signal by means of a portable electronic unit adapted to equip said person or object; and detecting the direction of passage through said entry-exit of a person or an object equipped with the portable electronic unit as a function of the reception of said first and second electromagnetic signals, wherein said first and second electromagnetic signals are transmitted substantially in phase at the same frequency and each comprises an identical message portion, one of said first and second electromagnetic signals further comprising an additional message portion identifying the corresponding communication region, transmission of the other of said first and second electromagnetic signals being interrupted during the transmission of said additional message portion. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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Specification