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1. (WO2018225028) SYSTÈME DE BALAYAGE DE CHAUSSURE POUR SCANNER CORPOREL ET PROCÉDÉ D'ADAPTATION DE SCANNER CORPOREL
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Claims

1. A shoe scanning system (1) for a restricted area access point, notably provided with a full-body scanner (45) scanning an individual (2) before access to a restricted access area (41), the system comprising:

a detection unit (10) comprising:

a main detector (12) for sensing a metal and/or unauthorized object above a surface (1 1 1) onto which the individual (2) can walk;

a communication unit (17) for transmitting a message to an indication unit (5, 51 , 52) for providing instructions to the individual (2) and/or to an assistant (3); and

a processing unit (15) connected to the main detector (12) by a data link for receiving data and controlling the communication unit (17) for sending a detection signal when the main detector indicates a presence of a metal and/or unauthorized object,

wherein the main detector comprises sensing elements (122, 123) located below said surface (1 1 1); the sensing elements (122, 123)

comprising:

a short-range sensing element (122) arranged to detect a metal and/or unauthorized object located above said surface (1 1 1) up to a first maximal distance (1221), and

a long-range sensing element (123) arranged to detect a metal and/or unauthorized object located above said surface (1 1 1) up to a second maximal distance (1231), the second maximal distance (1231) being higher than the first maximal distance (1221).

2. The shoe scanning system according to claim 1 , wherein

the short-range sensing element (122) is an inductive sensing element, and wherein

the long-range sensing element (123) is an inductive sensing element.

3. The shoe scanning system according to claim 1 , wherein the short-range sensing element (122) is a capacitive sensing element, and wherein

the long-range sensing element (123) is a capacitive sensing element.

4. The shoe scanning system according to any one of claim 1 to 3, wherein the processing unit (12) and/or the main detector (12) are configured to combine a result provided by the short-range sensing element and a result provided by the long-range sensing element so as to provide a more accurate detection of a metal and/or unauthorized object up to the first maximal distance (1221) with respect to the detection provided between the first (1221) and the second maximal distance (1231).

5. The shoe scanning system according to any one of claim 1 to 4, wherein the processing unit (12) and/or the main detector (12) are configured to combine a result provided by the short-range sensing element and a result provided by the long-range sensing element so as to discriminate a metal and/or unauthorized object above said surface (1 1 1) up to a detection threshold distance (18).

6. The shoe scanning system according to claim 5; wherein the detection threshold distance is selectable in a range from a predetermined detection minimal distance (182) to a predetermined maximal detection distance (181); said predefined minimal detection distance (182) being preferably smaller than 1 cm and said predefined maximal detection distance (181) being preferably larger than 20 cm.

7. The shoe scanning system according to claim 6,

said first maximal distance (1221) being lower than said predetermined maximal detection distance (181), and

said second maximal distance (1231) being equal or higher than said predetermined maximal detection distance (181).

8. The shoe scanning system according to any one of claims 1 to 7, wherein the short-range sensing element (122) and/or the long-range sensing element (123) are printed on a support (16) below said surface (1 1 1).

9. The shoe scanning system according to claim 8, the printed surface (1231) of the long-range sensing element (123) being at least twice the printed surface (1221) of the short-range inductive sensing element (122).

10. The shoe scanning system according to any one of claims 1 to 9, the processing unit (15) and/or the main detector (12) being able to modify a detection sensitivity of said short-range sensing element and/or of said long-range sensing element so as to modify the first and/or second maximal distance (1221).

1 1. The shoe scanning system according to any one of claims 1 to 10, wherein the short-range sensing element (122) and/or the long-range sensing element (123) (122, 123) of the main detector (12) are located in one or more recesses (1 13) of a protective casing (1 1).

12. The shoe scanning system according to any one of claims 1 to

1 1 , wherein

the short-range sensing element, the long-range sensing element and/or one of said sensing elements is arranged to measure an

electromagnetic permittivity or permeability, preferably in the range of 100 kHz to 6 GHz, for detecting an unauthorized object, notably a dangerous and/or illegal non-metallic object, worn or carried by the individual.

13. The shoe scanning system according to any one of claims 1 to

12, wherein

the detection unit (10) further comprises a proximity detector (13), such as a capacitive sensor, for sensing a positioning of a shoe (20) of the individual (2) on said surface (1 1 1).

14. The shoe scanning system according to claim 13, wherein the processing unit (15) is further connected to the proximity detector (13) by a data link for receiving data; and wherein

the controlling processing unit (15) is configured to control the communication unit (17) for sending a pass signal when both following conditions are met:

the proximity detector indicates that the shoe (20) lays at a specific position (1 12) on said surface (1 1 1), and

the main detector indicates a probability of a presence of a metal and/or unauthorized object lower than a predefined detecting threshold.

15. The shoe scanning system according to claim 14, further comprising a position identifying mark (140, 141) indicating said specific position (1 12) on said surface (1 1 1); wherein

the processing unit (15) is further configured to control the communication unit (17) for prompting the individual to place his shoe (20) at said specific position if the proximity detector indicates that the shoe is positioned outside said specific position (1 12).

16. The shoe scanning system according to any one of claims 1 to

15, the processing unit (15) being configured to control the communication unit (17) for sending a stop signal in order to prompt the individual to stop walking towards restricted access area (41) and to remove his shoe if:

the main detector indicates a probability of a presence of a metal and/or unauthorized object that is higher than said predefined detecting threshold.

17. The shoe scanning system according to any one of the claims 1 to 16, further configured to transmit to the full-body scanner (45):

the detection signal, the pass signal, the stop signal, and/or the indication of a probability of a presence of a metal and/or

unauthorized object that is higher or lower than the predefined detecting threshold; and/or

to receive detection results from the body scanner and to control the communication unit for transmitting them to the indication unit (5, 51 , 52) for displaying aggregated detection results, and/or

to receive a trigger command from the full-body scanner for triggering a scan by means of the detection unit, the main detector and/or the proximity detector.

18. A shoe scanning system (1) for integration with an existing full-body scanner (45) having at least a sensor for sensing a metal and/or unauthorized object, the system (1) comprising:

a protective casing (1 1) providing a surface (1 1 1) onto which the individual (2) can walk;

a main detector (12) enclosed within the protective casing (1 1) for detecting a metal and/or unauthorized object located above said surface (1 1 1);

a proximity detector (13) enclosed within the protective casing (1 1) for detecting a positioning of a shoe (20) of the individual (2) above said surface;

a communication unit (17) for transmitting a pass signal to a processing unit of a full-body scanner (45) when both following conditions are met:

the proximity detector indicates that the shoe (20) lays at a specific position (1 12) on said surface (1 1 1), and

the main detector indicates a probability of a presence of a metal and/or unauthorized object lower than a predefined detecting threshold.

19. A shoe scanning system (1) for integration with an existing full-body scanner (45) having at least a sensor for sensing a metal and/or unauthorized object above a detecting surface onto which an individual can stand during a body scan, the shoe scanning system (1) comprising:

a main detector (12) comprising at least a sensing element;

a protective casing (1 1) enclosing said at least a sensing element and comprising a walking surface on which an individual can walk; the protective casing being configured to be placed on said detecting surface of the full-body scanner (45) so as to cover a limited portion thereof; and a communication unit (17) for transmitting data provided by the main detector (12) to a processing unit of the full-body scanner (45);

wherein said at least a sensing element is configured, when the protective casing is placed on said detecting surface of the full-body scanner (45), to detect a metal and/or unauthorized objet within a shoe worn by an individual standing on an uncovered portion of said detecting surface.

20. The shoe scanning system (1) of claim 19, wherein

said uncovered portion is at least partially delimited by a portion of the protective casing;

preferably said portion of the protective comprising a O-shaped,

E-shaped, T-shaped, U-shaped, V-shaped, H-shaped, 8-shaped, Z-shaped, and/or a S-shaped part.

21. The shoe scanning system (1) of claim 19 or 20, the system further comprising a proximity detector (13) enclosed within the protective casing (1 1) for detecting a positioning of a shoe (20) of the individual (2) on said uncovered portion ;

the communication unit (17) being configured to transmit a pass signal when both following conditions are met:

the proximity detector indicates that the shoe (20) lays on said uncovered portion, and

the main detector indicates a probability of a presence of a metal and/or unauthorized object lower than a predefined detecting threshold.

22. A retrofitting method for a full-body scanner (45) for scanning an individual (2) before access to a restricted access area, the method comprising:

-providing a shoe scanning system (1) comprising a detection unit (10) having:

a main detector (12) comprising at least a sensing element, preferably being an inductive and/or capacitive sensing element, a communication unit (17) for transmitting a message to an indication unit (5, 51 , 52), and

a processing unit (15) connected to the main detector (12) by a data link for receiving data and controlling the communication unit (17) for sending a detection signal when the main detector indicates a presence of a metal and/or unauthorized object;

wherein said at least sensing element is placed under a surface (1 1 1) of a path (42, 43) toward said area so as to sense a metal and/or unauthorized object located above said surface (1 1 1);

-establishing a data link between the communication unit (17) of the detection unit (10) and an indication unit (5, 51 , 52) for providing instructions to the individual (2) and/or to an assistant (3), the indication unit (5, 51 , 52) being preferably part either of the shoe scanning system (1) or of the full-body scanner (45)

wherein the method further comprises a step of:

selecting a detection threshold distance (18) under which a metal and/or unauthorized object is detected so as to allow a detection within a predefined detection volume of the full-body scanner, preferably within a blind, oriented-blind and/or indiscriminating detection volume of the full-body scanner.

23. The method according to claim 22, wherein said detection threshold distance is selected in a range from a predetermined minimal detection distance (182) to a predetermined maximal detection distance (181);

preferably said predefined minimal detection distance (181) being lower than 1 cm and said predefined maximal detection distance (181) being bigger than 20 cm

24. The method according to claim 22 or 23, wherein said at least a sensing element (122, 123) comprises:

a short-range sensing element (122) arranged to detect a metal and/or unauthorized object located above said surface (1 1 1) up to a first maximal distance (1221) and

a long-range sensing element arranged to detect a metal and/or unauthorized object located above surface (1 1 1) up to a second maximal distance (1231);

the method further comprising a step of:

combining a result provided by the short-range sensing element and a result provided by the long-range sensing element so as to

discriminate a metal and/or unauthorized object above said surface (1 1 1) up to the detection threshold distance (18).

25. The method according to claim 24, further comprising a step of modifying the first and/or the second maximal distance (1221,

1231), preferably by modifying a detection sensibility of said short-range sensing element and/or a detection sensibility of said long-range sensing element.

26. The method according to any one of claims 22 to 25,

comprising a step of

establishing a data link, preferably via an Ethernet link, between the shoe scanning system (1) and the full-body scanner (45) for providing detection results provided by the shoe scanning system to the full-body scanner (45) and/or for aggregating detections of metallic objects and/or unauthorized objects, notably non-metallic objets, provided by the shoe scanning system and by the full-body scanner (45);

the method further preferably comprises displaying of aggregated result by means of said indication unit.

27. The method according to any one of claim 22 to 27, comprising a step of

establishing a command link, preferably via an Ethernet link, between the shoe scanning system (1) and the full-body scanner (45);

triggering with said full-body scanner a detection by said shoe scanning system.