ABSTRACT:
Radio Frequency Identification (RFID) Card Readers provide a low-cost solution to read passive RFID transponder tags up to 2 inches away. The RFID Card Readers can be used in a wide variety of hobbyist and commercial applications, including access control, automatic identification, robotics navigation, inventory tracking, payment systems, and car immobilization. The RFID card reader read the RFID tag in range and outputs unique identification code of the tag at baud rate of 9600. The data from RFID reader can be interfaced to be read by microcontroller or PC.
The parcel will be attached with an RFID tag. This tag contains a unique number. As the parcel travels many postal departments in various regions before reaching the destination, it will read in every region. Every postal department contains the RFID reader.
The reader reads each and every parcel and automatically sends the unique number in the tag to the microcontroller. The microcontroller displays this number on LCD along with the area it is currently in.
The users can check the status and details of the parcel by reading them. If any unauthorized cards occur it gives long beep sound. This option avoids the malfunctions. In this project 7805 is a regulator and it avoids noise spikes in power supply. RFID modem is connected microcontroller through serial port. These RFID modem works under 9600 or 4800 baud rates. 16X2 LCD connected to microcontroller through digital I/O lines.
TECHNICAL SPECIFICATIONS:
HARDWARE:
Micro controller : AT89S52
Crystal : 11.0592 MHz
LED : 5mm Red LED
Serial Driver : Max 232
LCD : HD44780
RFID modem, Buzzer
Power supply
Transformer : 12V step down
Filter : 1000uf/25V
Voltage Regulator : 7805
SOFTWARE:
Keil micro vision
Proteus
UC flash
APPLICATIONS:
Parcel tracking system