SENSOR ELEMENT FOR OPENING OF DOORS AND GATES

• US 20090313897A1
• Filed: 11/06/2006
• Published: 12/24/2009
• Est. Priority Date: 11/25/2005
• Status: Active Grant

• Current Assignee: Bircher Reglomat AG (Giorgio Behr, PhD)
• Original Assignee: Bircher Reglomat AG (Giorgio Behr, PhD)
• Inventors: Audergon, Léon, Mezger, Klaus
• Granted Patent: US 8,223,085 B2
• Time in Patent Office: Days
• US Class Current: 49/25
• CPC Class Codes: E05F 15/73 responsive to movement or presence of persons or objects
• CPC Class Codes: E05Y 2900/132 Doors
• CPC Class Codes: H01Q 19/26 the primary active element being end-fed and elongated

Abstract

A sensor element for opening of doors and gates, with the aim being to allow production of a detection field for identification of people and/or static objects by means of an antenna element, the antenna element is intended to have a flat antenna unit, with a pin-like antenna projecting at least approximately vertically from the flat antenna unit.

Claims

1. A sensor element for opening of doors and gates, comprising antenna element means for generating a sensing field to detect objects, the antenna element means comprises

a flat antenna unit, and at least one pin-like antenna projecting approximately perpendicularly from the flat antenna unit.

2. The sensor element as claimed in claim 1, wherein a plurality of pin-like antennas project approximately perpendicularly from the flat antenna unit, the plurality of pin-like antennas being arranged beside one another in an approximately horizontal manner and being arranged at a distance from one another.

3. The sensor element as claimed in claim 1, wherein at least one reflector is provided, such that it projects approximately perpendicularly from the flat antenna unit in a pin-like manner, in an area above the at least one pin-like antenna.

4. The sensor element as claimed in claim 3, wherein the reflector is arranged at a selectable distance above the at least one pin-like antenna, on a vertical to the antenna.

5. The sensor element as claimed in claim 3, wherein a length of the reflector is one of less than, equal to and greater than a length of the antenna which is below the reflector and projects from the flat antenna unit.

6. The sensor element as claimed in claim 3, wherein a breath of the sensing field can be changed broadening of the sensing field can be changed and/or restricted using the length and/or the geometrical arrangement of the reflector with respect to the antenna.

7. The sensor element as claimed in claim 1, wherein a director projects approximately perpendicularly from the flat antenna unit in a pin-like manner in a further area below the at least one antenna.

8. The sensor element as claimed in claim 6, wherein the director projects approximately perpendicularly, at a selectable distance, from the flat antenna unit in a pin-like manner, the director being arranged approximately vertically below the antenna.

9. The sensor element as claimed in claim 8, wherein the director projects from the flat antenna unit in a pin-like manner and has a length which is one of less than, equal to and greater than the antenna above it.

10. The sensor element as claimed in claim 1, wherein a plurality of individual arrangements comprising a reflector, an underlying antenna and an underlying director are provided on the flat antenna unit as projecting pins.

11. The sensor element as claimed in claim 8, wherein the reflector, the antenna and the director are arranged as pins which project approximately perpendicularly from the flat antenna unit and have a round, square, polygonal, oval or other form of cross section.

12. The sensor element as claimed in claim 10, wherein a sensing field for a determinable field characteristic can be focused using a two-row or multi-row arrangement of a plurality of reflectors, antennas and directors above one another, a distance between individual arrangements being able to be changed and set.

13. The sensor element as claimed in claim 12, wherein the at least one reflector and the at least one director are connected to ground directly or, if necessary, by means of an additional circuit.

14. The sensor element as claimed in claim 13, wherein at least one receiving antenna comprising a plurality of pins is formed beside an arrangement of the antenna and, if appropriate, the reflector and director.

15. The sensor element as claimed in claim 14, wherein the receiving antenna is analogously formed from correspondingly identical pins of the same dimensions, length and diameter as the adjacent arrangement of the reflector, antenna and director, the arrangement of the receiving antenna with its pins, which project approximately perpendicularly from the flat antenna unit, being analogously formed beside the arrangement of the reflector, antenna and director.

16. The sensor element as claimed in claim 15, wherein a broadening of the sensing field can be determined, in particular can be set, using the number of individual vertical arrangements of rows comprising respective antennas and, if appropriate, reflectors and directors.

17. The sensor element as claimed in claim 16, wherein an opening angle (φ

) and thus a length of the sensing field can be set and determined using the distances between the arrangements and lengths of the reflectors with respect to the antenna(s) and distances between the reflectors and the antenna(s).

18. The sensor element as claimed in claim 17, wherein a width of the sensing field can be set using the corresponding arrangement of a plurality of rows of the reflector, the underlying antenna and, if appropriate, the underlying director beside one another.

19. The sensor element as claimed in claim 6, wherein corresponding changing-over between individual adjacent arrangements of the reflector, antenna and director can be switched or changed over with selectable distances and selectable lengths of the individual pins, and different widths of the sensing field can be set.

20. The sensor element as claimed in claim 19, wherein the antenna is in the form of an asymmetrical λ

/4 dipole.

21. The sensor element as claimed in claim 19, wherein the flat antenna unit containing the reflector, antenna and director has one or more receiving antennas in the form of pins.

22. The sensor element as claimed in claim 21, wherein the reflector and/or the antenna and/or the director is/are oriented at a selectable angle of greater than or less than 90°

to the flat antenna unit.

23. The sensor element as claimed in claim 1, wherein the flat antenna unit is dimensioned for a frequency range of 10 to 100 GHz.

24. The sensor element as claimed in claim 1, wherein the flat antenna unit is dimensioned for a frequency range of 10 to GHz.

25. The sensor element as claimed in claim 1, wherein the flat antenna unit is dimensioned for a frequency range of 24 GHz.