ANTENNA, AND RADIO FREQUENCY IDENTIFYING DEVICE AND METHOD

• US 20110057038A1
• Filed: 01/15/2010
• Published: 03/10/2011
• Est. Priority Date: 09/09/2009
• Status: Active Grant

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Park, Jong Heung, Kim, Young Gon, Hu, Hong Suk, KOO, Hoon Young, Song, Jae Gwan
• Granted Patent: US 8,267,319 B2
• Time in Patent Office: Days
• US Class Current: 235/451
• 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: H01Q 1/2216 used in interrogator/reader equipment
• CPC Class Codes: H01Q 3/08 for varying two co-ordinates of the orientation

Abstract

A radio frequency identifying device minimizes a null point area within a radiation pattern by horizontally or vertically vibrating an antenna plate radiating a radio frequency beam by using at least one vibration motor.

Claims

1. A radio frequency identifying device comprising:

a sensor for sensing whether there is an identification object within a predetermined area;

an antenna including an antenna plate and a vibration motor, and vibrating the antenna plate by using the vibration motor and radiating a radio frequency beam by using the antenna plate; and

a controller for controlling the vibration motor and the antenna plate to vibrate the antenna plate and radiate the radio frequency beam when the identification object is sensed by the sensor.

2. The radio frequency identifying device of claim 1, wherein

the antenna includes:

an interface for receiving a control signal from the controller;

the vibration motor for generating vibration for moving the antenna plate horizontally or vertically based on the control signal; and

the antenna plate for radiating the radio frequency beam based on the control signal.

3. The radio frequency identifying device of claim 2, wherein

the antenna further includes:

a vibration plate for transferring the vibration to the antenna plate;

a vibration plate support for restoring the antenna plate and the vibration plate to their original states of before vibration is generated, when the vibration stops; and

a vibration support plate for controlling a vibration range of the vibration plate.

4. The radio frequency identifying device of claim 3, wherein

the vibration plate support is made of a material with predetermined hardness and elasticity.

5. The radio frequency identifying device of claim 3, wherein

the length or position of the vibration support plate is variable, and the vibration range of the antenna plate is controlled by the length or position of the vibration support plate.

6. The radio frequency identifying device of claim 2, wherein

the antenna includes a plurality of vibration motors having the same number of vibrations occurring within the same time and having different times of generation of vibration.

7. The radio frequency identifying device of claim 2, wherein

the antenna includes a plurality of vibration motors having different numbers of vibrations occurring within the same time.

8. The radio frequency identifying device of claim 1, wherein

the antenna includes:

a first vibration motor for generating vibration for moving the antenna plate horizontally; and

a second vibration motor for generating vibration for moving the antenna plate vertically.

9. An antenna of a radio frequency identifying device, comprising:

an antenna plate for radiating a radio frequency beam;

a vibration motor for generating vibration for moving the antenna plate; and

a vibration plate for transmitting the vibration to the antenna plate.

10. The antenna of claim 9, further including

a vibration plate support for restoring the antenna plate and the vibration plate to their original states of before vibration is generated, when the vibration is stopped;

and

a vibration support plate for controlling the vibration range of the vibration plate.

11. The antenna of claim 9, wherein

the vibration motor generates vibration when there is an identification object within a predetermined range.

12. The antenna of claim 9, wherein

the antenna plate radiates the radio frequency beam when there is an identification object within a predetermined range.

13. A radio frequency identifying method of a radio frequency identifying device, comprising:

generating vibration horizontally or vertically by using a vibration motor;

generating a radio frequency beam while moving an antenna plate according to the vibration; and

receiving data from a radio frequency identification tag having received the radio frequency beam.

14. The radio frequency identifying method of claim 13, further including

sensing whether there is an identification object within a predetermined range by using a sensor.

15. The radio frequency identifying method of claim 14, wherein

the generating includes

generating the vibration when the identification object is sensed by the sensor.

16. The radio frequency identifying method of claim 14, wherein

the radiating includes

radiating the radio frequency beam when the identification object is sensed by the sensor.