Time-controlled access with power management using RFID acquisition and power control distribution

This study presents the design and prototype development of a time - controlled access system consisting of an Arduino Mega ADK 2560 microcontroller integrated with a PN532 RFID/NFC Shield, Ethernet Shield, LCD, solenoid lock and a control circuit for the loads to address security issues and help save power consumptions of any institutions. When a passive RFID tag is placed in the reading range of the RFID shield, the microcontroller queries the database to verify if it is an authorized tag and is read at the registered time. A PHP script processes the MYSQL queries to send and get data to and from the database. The current time is displayed and a text is shown on the LCD to notify the tag´s validity. A GUI is accessible to the users for viewing of the records and management of the database. The system is capable of determining and storing the login and logout time of those who accessed the room as well as automatically turning on the loads connected to the system.