Abstract:
In general, a smart card is an integrated circuit card with memory capable of making decisions. A smart card, chip card or integrated circuit card (ICC), is defined as any pocket-sized card with embedded integrated circuits which can process information. In this project, we are using a contact smart card where the information inside the card is communicated with the card reader by inserting card into the card reader. The card reader in this project used is an SR-90 SDK of 1KB memory size.
In this project microcontroller have smart card reader and DC gear motor. After insert card into the smart card reader it reads the data from card and display on 16X2 LCD. Every smart card having individual data and data belongs to each user. This data stored in internal memory of smart card. Microcontroller gets the card data from smart card reader and compare with data base. If card information matches with database then door will be open and close after 20 seconds. Otherwise door will not open.
Gate will be controlled by DC gear motor and it will operate through L293D driver IC. This L293D is an H-bridge driver. Microcontroller shows status and access details of card on 16X2 LCD display.Unauthorised cards it gives beep sound through buzzer. In this project 7805 is a regulator and it avoids noise spikes in power supply. Smart card reader is connected microcontroller through serial port. These smart card readers 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
Motor driver : L293D
SMART card reader
Buzzer
Power supply
Transformer : 12V step down
Filter : 1000uf/25V
Voltage Regulator : 7805
SOFTWARE:
Keil micro vision
Proteus
UC flash
APPLICATIONS:
- Parking system
- Apartments