Design and Implementation of a Digital Sliding Gate Using RFID Technology

Abstract

Security of human life and property is one of the paramount challenges facing any corporate organization or nation. Security systems are necessary everywhere especially in residential buildings, industrial area and public offices. The need for automatic sliding gates has been on the increase in recent times because it does not require manual operation. The digital sliding gating system described in this work uses the Radio Frequency Identification (RFID) technology for access control. The RFID module, which is the sensing unit of the system, is interfaced with the processing unit (Atmega8a microcontroller) for controlling the actuating unit (sg90 servo motor). The sliding gate opens partially when the valid card for human access is brought closer to the reader, it opens fully when the valid card for vehicle access is brought closer to the reader while an invalid card brought closer to the reader activates the buzzer. The time taken for the reader to read the tag is 3 seconds for both human and vehicle access while the waiting period between the opening and closing of the gate are 10 seconds and 21 seconds for human and vehicle access respectively. These operations are made possible by the programmable microcontroller used and the pivot joint mechanism for the fast opening and closing of the gate. The developed system was tested and it performed as designed.