RFID LOCATION METHOD AND SYSTEM THEREOF

• US 20100214116A1
• Filed: 12/09/2009
• Published: 08/26/2010
• Est. Priority Date: 02/23/2009
• Status: Abandoned Application

• Current Assignee: Champtek Incorporated
• Original Assignee: Champtek Incorporated
• Inventors: Pang, Li-Dar, Huang, Shu-Ying
• Application Number:
  US12/634,047
• Publication Number:
  US 20100214116A1
• Time in Patent Office: Days
• US Class Current: 340/825.490
• CPC Class Codes: G01S 5/14 Determining absolute distances from a plurality of spaced points of known location

Abstract

A RFID location method and a system thereof are configured for determining a coordinate position of a RFID tag (10). The RFID location method comprises: providing at least three relay routers (20A˜20C) to correspond to the RFID tag (S10); receiving an identification information and generating relay identification information having RSSI values by the relay routers corresponding to the RFID tag (S20); transmitting the relay identification information from the relay routers to a reader (30) (S30); transmitting the relay identification information from the reader to a computer (40) (S40); employing a location algorithm method to calculate the coordinate position of the RFID tag according to the RSSI values of the relay identification information by the computer (S50).

Claims

1. A RFID location method configured for determining a coordinate position of a RFID tag (10), the RFID tag being configured for emitting an identification information, the method comprising:

providing at least three relay routers (20A˜

20C) to correspond to the RFID tag (S10);

receiving the identification information and generating relay identification information having RSSI values by the relay routers corresponding to the RFID tag (S20);

transmitting the relay identification information from the relay routers to a reader (30) (S30);

transmitting the relay identification information from the reader to a computer (40) (S40);

employing a location algorithm method to calculate the coordinate position of the RFID tag according to the RSSI values of the relay identification information by the computer (S50).

2. The method as claimed in claim 1, further comprising duratively receiving the identification information emitted from the RFID tag by the relay routers (S60).

3. The method as claimed in claim 1, wherein the relay routers is a mesh architecture.

4. The method as claimed in claim 1, wherein the computer comprises a middleware (42), a real-time location system (44) and a database management system (46).

5. The method as claimed in claim 1, wherein the location algorithm method is a triangulate location algorithm method.

6. A RFID location system configured for determining a coordinate position of a RFID tag (10), the RFID tag being configured for emitting an identification information, the system comprising:

at least three relay routers (20A˜

20C) located to correspond to the RFID tag and configured for receiving the identification information to generate relay identification information having RSSI values respectively;

a reader (30) operatedly coupled to the relay routers for the relay routers transmitting the relay identification information to the reader; and

a computer (40) electrically coupled to the reader for the reader transmitting the relay identification information to the computer;

wherein the computer employs a location algorithm method to calculate the coordinate position of the RFID tag according to the RSSI values of the relay identification information.

7. The system as claimed in claim 6, wherein the reader is wirelessly coupled to the relay routers.

8. The system as claimed in claim 6, wherein the relay routers are a mesh architecture.

9. The system as claimed in claim 6, wherein the computer comprises a middleware (42), a real-time location system (44) and a database management system (46).

10. The system as claimed in claim 6, wherein the location algorithm method is a triangulate location algorithm method.