RFID Security Access Control System.

RFID Security Access Control System using 8051 Microcontroller is an RFID Technology-based security system. Using this system, authorization of personnel is carried out with an RFID card and only those with access can enter a secured area. Radio Frequency Identification or simply RFID is a wireless technology generally used for automatic identification and data collection.

The RFID technology is used for accessing data from a uniquely identify RFID card or tag by combining the radio frequency and microchip technologies. example; the data is retrieved or stored into the RFID cards without making any physical contact.
With the help of RFID technology, we can create smart systems that can be used personnel identification, product monitoring, individual or organization security, transportation, maintenance of inventory and supply chain tracking.

RFID systems usually comprise three components: an RFID Card, an RFID Reader Module and a host device.
RFID Card or Tag consists of the data in the embedded microchip. RFID Reader is used to read the data from the RFID Card and transfer it to the host device.

How RFID Security Access Control System Works?

This project aims to design an RFID based security access control system using 8051 microcontroller, in which only authorized personnel are allowed access to a secure area. The working of the project is explained here. When the circuit is powered ON, the microcontroller will initially display a message as “Swipe the Card” on the LCD. When the RFID Card or Tag is swiped against the RFID reader, it will detect the ID card and sends the unique card no. to the microcontroller via the serial terminal. With the help of suitable programming, we need to compare the received card no. with the numbers that are already stored in the microcontroller or any database like the external memory unit.

If the received number is matched with the already stored number, then the microcontroller will display the name of the cardholder on the LCD and activates the motor driver IC. As a result, the door is opened for a predefined duration after which the door is automatically closed.
If there is no match for the received numbers with the stored numbers, then the microcontroller will not open the door and displays a message as “Access Denied” on the LCD.

Advantages of RFID Based Security Access System

• It is designed in this project. As the system uses RFID Technology-based identification, it can be used to access secured areas like research centers, defense sites, etc.
• It is a low power system and also the RFID Cards or Tags used are of the passive type.

Limitations

• Even though RFID Technology is secure, security can be increased by integrating other security measures like facial detection, fingerprint scanner, etc.
• As the card details are stored in the microcontroller, only a limited number of card details can be stored. This can be increased by implementing a memory unit like EEPROM.

CONCLUSION;
Security Access System can be used for a variety of purposes. If you are speaking about the system hacks, but can also give them improved abilities, like give them secure or even making them stronger. For industrial purposes, the fact that arms can be automated gives the productivity of an endless amount of workers that never tire, never get bored, and need very little supervision. In the future, they may be able to even make replicas of themselves, and I believe there already are some advance security systems has built.

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