LARGE SCALE ACTIVE RFID SYSTEM UTILIZING

ZIGBEE NETWORKS

Introduction:

RFID is high-technology automatic identification based on wireless networks and enable

noncontact identification; however, they cannot be applied beyond their radio communication

range. Considering this, the present paper proposes a large scale active RFID system utilizing

Zigbee networks in order to extend a reader’s radio coverage.

Existing System:

Zigbee wireless technology is having limitation of distance while wireless

communication takes place to transfer the data like RFID number, sensor value, etc. Hence we

cannot be applied beyond their radio communication range. Hence we propose this system.

Proposed system:

The system consists of a master RFID reader, intermediate node (IN), collection node

(CN), and RFID tags. In general, the reader acts as a traditional RFID reader and communicates

with devices on Zigbee networks. Intermediate Nodes (INs) for transferring messages or

commands from the reader or the CN can include a general Zigbee device, a sensor node, or a

Collection node (CN). The collection node can communicate with other Zigbee devices and acts

as a remote RFID reader. The RFID reader is attached with 8051 microcontroller with serial

communication in main node. The RFID reader is used the RFID tag information and fed to

microcontroller using UART. The microcontroller transfers the data to intermediate node using

zigbee wireless protocol. The intermediate node receives the information sent by main node and

strength the signal and it will send the data to the collection node. The collection node consist of

zigbee with PC, and the information are stored in pc the zigbee wireless protocol and RS232

protocol, then the information is collected using .NET application.

Block Diagram:

Main Node:

Intermediate Node:

AT89C51

Microcontroller

MAX232

Power supply

RFID Reader

RFID Tag’s

Collection Node:

Hardware Requirements:

1. 8051 Microcontroller.

2. RFID reader and tag

PC Max232

Power supply

AT89C51

Microcontroller

Power supply

3. Zigbee module.

4. MAX 232.

5. PC

Software Requirements:

1. Embedded C

2. Keil Compiler

3. VB .NET