Free standing column-shaped structure for housing RFID antennas and readers

• US 20050168385A1
• Filed: 02/04/2005
• Published: 08/04/2005
• Est. Priority Date: 02/04/2004
• Status: Active Grant

• Current Assignee: Venture Research Incorporated
• Original Assignee: Venture Research Incorporated
• Inventors: Baker, John E.
• Granted Patent: US 7,036,734 B2
• Time in Patent Office: Days
• US Class Current: 343/700.MS
• CPC Class Codes: G06K 7/10316 using at least one antenna particularly designed for interrogating the wireless record carriers antennas in general H01Q1/22
• CPC Class Codes: G06K 7/10336 the antenna being of the near field type, inductive coil
• CPC Class Codes: G06K 7/10346 the antenna being of the far field type, e.g. HF types or dipoles
• CPC Class Codes: G06K 7/10356 using a plurality of antennas, e.g. configurations including means to resolve interference between the plurality of antennas
• CPC Class Codes: H01Q 1/1242 Rigid masts specially adapted for supporting an aerial
• CPC Class Codes: H01Q 1/2216 used in interrogator/reader equipment
• CPC Class Codes: H01Q 1/42 Housings not intimately mechanically associated with radiating elements, e.g. radome

Abstract

An RFID system is provided, which includes one or more radio frequency antennas and a generally column-shaped structure. The generally column-shaped structure supports the antenna(s) therein. The structure may include a base portion, a frame portion, one ore more paddle portions, and an external body portion. In such case, the frame portion is attached to and supported by the base portion. The frame portion extends along a vertical axis of the structure. Each paddle portion is pivotably coupled to the frame portion. Each paddle portion supports one or more antennas attached thereto. The hollow and elongated external body portion is attached to and supported by the base portion. The external body portion extends along the vertical axis. The frame portion, the paddle portion(s), and the antenna(s) are located within the external body portion.

Claims

1. A radio frequency identification (RFID) system comprising:

a radio frequency antenna;

a generally column-shaped structure supporting the antenna therein, the structure comprising

a base portion,

a frame portion attached to and supported by the base portion, the frame portion extending along a vertical axis of the structure,

a paddle portion pivotably coupled to the frame portion, wherein the antenna is supported by and attached to the paddle portion, and

a hollow and elongated external body portion attached to and supported by the base portion, and the external body portion extending along the vertical axis, wherein the frame portion, the paddle portion, and the antenna are located within the external body portion.

2. The RFID system of claim 1, wherein the frame portion is adapted to pivot about the vertical axis with respect to the base portion.

3. The RFID system of claim 1, wherein the paddle portion is adapted to pivot about a horizontal axis.

4. The RFID system of claim 3, wherein the paddle portion is adapted to retain a position about the horizontal axis.

5. The RFID system of claim 4, wherein the structure further comprises an adjustable-length member extending between the paddle portion and the frame portion.

6. The RFID system of claim 4, wherein the structure further comprises a set screw extending through the frame portion and adapted to engage against a part of the paddle portion.

7. The RFID system of claim 1, wherein the structure further comprises a hollow coupler member attached to the base portion, wherein the external body portion is attached to the base portion by the coupler member.

8. The RFID system of claim 1, wherein the paddle portion is removably attached to the frame portion.

9. The RFID system of claim 1, wherein the external body portion is removably attached to the base portion.

10. The RFID system of claim 1, wherein the frame portion of the structure further comprises multiple tiers of horizontal platforms.

11. The RFID system of claim 1, further comprising electrical components supported by the frame portion and located within the external body portion, the electrical components being selected from a group consisting of a computer processor, a memory storage device, a wireless communication device, an RFID reader device, a battery, and combinations thereof.

12. The RFID system of claim 1, wherein the structure further comprises a top end cap member removably attached to the external body portion, the top end cap member being located at an upper end of the vertical axis.

13. The RFID system of claim 1, wherein the external body portion comprises first and second vertically-extending portions, the first and second portions being separable from each other.

14. The RFID system of claim 13, wherein the first vertically-extending portion is made from a material that differs from that of the second vertically-extending portion.

15. The RFID system of claim 1, wherein the external body portion comprises one or more access openings formed therein, and comprises corresponding access door(s) adapted to cover the access opening(s).

16. The RFID system of claim 1, wherein the external body portion has a cross-section shape perpendicular to the vertical axis selected from a group consisting of a circle, an oval, an ellipse, a polygon, a rectangle, a square, a hexagon, and an octagon.

17. The RFID system of claim 1, further comprising a communication system attached to the structure, wherein the communication system is selected from a group consisting of an indicator light, an electronic display screen, a still camera, a video camera, a sign, a banner, and combinations thereof.

18. The RFID system of claim 1, wherein the paddle portion has a planar shape selected from a group consisting of rectangular, generally rectangular with rounded corners, octagonal, and combinations thereof.

19. The RFID system of claim 1, further comprising a switch adapted to change switch position when the external body portion is moved vertically relative to the base portion.

20. The RFID system of claim 19, wherein the switch is connected such that the change of switch position triggers an alarm.

21. The RFID system of claim 19, wherein the switch is connected such that the change of switch position causes a decrease in power supplied to the antenna.

22. The RFID system of claim 1, further comprising a riser platform portion attached below the base portion.

23. The RFID system of claim 22, wherein wires enter the system through a side of the riser platform portion.

24. The RFID system of claim 1, wherein the frame portion comprises a bottom support disc, and wherein the bottom support disc has a generally semi-circular slot formed therein for providing pivotal adjustment relative to the base portion.

25. The RFID system of claim 1, wherein the frame portion comprises a rod member extending generally along the vertical axis and two or more generally V-shaped brackets, the generally V-shaped brackets being independently coupled to and supported by the rod member, wherein the paddle portion is pivotably coupled to one of the generally V-shaped brackets.

26. The RFID system of claim 1, wherein at least part of the structure may be sealed with silicon caulk and/or at least one gasket.

27. A radio frequency identification (RFID) system comprising:

a radio frequency antenna;

a generally column-shaped structure supporting the antenna therein, the structure comprising

a base portion,

a frame portion supported by the base portion and extending along a vertical axis of the structure, the frame portion being adapted to pivot about the vertical axis with respect to the base portion,

a paddle portion pivotably coupled to the frame portion, the paddle portion being adapted to pivot about a horizontal axis, wherein the antenna is supported by and attached to the paddle portion,

a hollow coupler member attached to the base portion, and

a hollow and elongated external body portion attached to the base portion by the coupler member and extending along the vertical axis, the external body portion being supported by the base portion, wherein the frame portion, the paddle portion, and the antenna are located within the external body portion.

28. A radio frequency identification (RFID) system comprising:

a radio frequency antenna; and

a generally column-shaped structure supporting the antenna therein, the structure comprising

a base portion, and

a cylindrical-shaped hollow external body portion extending along a vertical axis, the external body portion being supported by the base portion, wherein the antenna is located within the external body portion.

29. A radio frequency identification (RFID) system comprising:

a radio frequency antenna;

a generally column-shaped structure supporting the antenna therein, the structure comprising

a base portion,

a hollow external body portion adapted to extend along a vertical axis and to be supported by the base portion when the structure is in a first configuration such that the antenna is located within the external body portion, and

a switch located between the base portion and the external body portion when the structure is in the first configuration,

in the first configuration of the structure, the external body portion is operably installed relative to the base portion, the antenna is located within the external body portion, the switch is in a first switch position, and based upon the switch being in the first switch position, power supplied to the antenna during use is above a first predetermined level and below a second predetermined level, wherein the second predetermined level is greater than the first predetermined level, and

the structure having a second configuration in which at least part of the external body portion is farther from the base portion along the vertical axis than when the structure is in the first configuration, the switch is in a second switch position, and based upon the switch being in the second switch position, the power supplied to the antenna during use is at or below the first predetermined level.

30. The RFID system of claim 29, wherein the structure further comprises:

a frame portion attached to and supported by the base portion, the frame portion extending along a vertical axis of the structure; and

a paddle portion pivotably coupled to the frame portion, wherein the antenna is supported by and attached to the paddle portion, and wherein the frame portion, the paddle portion, and the antenna are located within the external body portion when the external body portion is operably installed in the first position.

31. The RFID system of claim 30, wherein the frame portion is adapted to pivot about the vertical axis with respect to the base portion.

32. The RFID system of claim 30, wherein the paddle portion is adapted to pivot about a horizontal axis.

33. A radio frequency identification (RFID) system comprising:

two or more radio frequency antennas;

a generally column-shaped structure supporting the antennas therein, the generally column-shaped structure comprising

a hollow and elongated external body portion extending along a vertical axis of the generally column-shaped structure,

two or more antenna support structures supporting the two or more antennas, the two or more antenna support structures being independently pivotable about the vertical axis within the body portion, such that the two or more antennas may be aimed in different directions.

34. A method of scanning radio frequency identification (RFID) tags, comprising:

passing a set of items grouped together through a portal, the items having RFID tags associated therewith, wherein a generally column-shaped structure stands at the portal, the generally column-shaped structure comprising a hollow and elongated external body portion extending along a vertical axis of the generally column-shaped structure, and comprising a set of radio frequency antennas located within the external body portion, wherein the set of antennas are independently pivotable about the vertical axis;

as the set of items are passed through the portal, radiating at least part of the set of items at a first level with radio frequency energy using a first antenna of the set of antennas, the first antenna being positioned at a first angle relative to a reference point about the vertical axis;

as the set of items are passed through the portal, radiating at least part of the set of items at a second level with radio frequency energy using a second antenna of the set of antennas, the second antenna being positioned at a second angle relative to the reference point about the vertical axis, wherein the second level differs from the first level, and wherein the second angle differs from the first angle; and

as the set of items are passed through the portal, radiating at least part of the set of items at a third level with radio frequency energy using a third antenna of the set of antennas, the third antenna being positioned at a third angle relative to the reference point about the vertical axis, wherein the third level differs from the first and second levels, and wherein the third angle differs from the first and second angles.

35. The method of claim 34, wherein the relative positions of the first, second, and third angles are set as a function of an average velocity of the set of items passing through the portal and as a function of a timing sequence of the antennas being used to radiate the set of items.

36. A method of controlling radiated power emitted from a radio frequency identification (RFID) system, comprising:

operating the RFID system while a generally column-shaped structure of the RFID system is in a first configuration such that radiated power emitted from the RFID system is at or below a predetermined wattage, the structure supporting therein an antenna of the RFID system, and the structure of the RFID system comprising

a base portion,

a hollow external body portion adapted to extend along a vertical axis and to be supported by the base portion when the structure is in the first configuration such that the antenna is located within the external body portion, and

a switch located between the base portion and the external body portion when the structure is in the first configuration, and the switch being in a first switch position when the structure is in the first configuration,

when operating the RFID system while the structure is in the first configuration and the switch is in the first switch position, providing power to the antenna above a first predetermined level and below a second predetermined level, wherein the second predetermined level is greater than the first predetermined level; and

operating the RFID system while the structure of the RFID system is in a second configuration such that radiated power emitted from the RFID system is at or below the predetermined wattage, and

in the second configuration at least part of the external body portion is farther from the base portion along the vertical axis than when the structure is in the first configuration, the switch is in a second switch position, and based upon the switch being in the second switch position, the power supplied to the antenna during the operating of the RFID system is at or below the first predetermined level.