DESIGN AND DEVELOPMENT OF A PROTOTYPE AUTOMATIC GATE SYSTEM USING AUTOMATIC NUMBER PLATE RECOGNITION (ANPR) EQUIPPED WITH A ONE TIME PASSWORD (OTP) FEATURE

Abstract

Conventional gate systems, including those using access cards, still have several limitations, such as the risk of card loss, vehicle queues, and potential vehicle theft. This study aims to design and develop an Automatic Number Plate Recognition (ANPR)-based automatic gate prototype by implementing the Internet of Things (IoT) concept and integrating a One Time Password (OTP) feature as an additional authentication method for exiting vehicles. The system utilizes a camera, OpenCV, EasyOCR, ESP32, MySQL database, Telegram Bot, and a web-based monitoring platform to recognize vehicle license plates and control vehicle access in real time. Experimental results show that the ultrasonic sensor achieved correlation coefficient (r) and coefficient of determination (R²) values close to 1. The ANPR system obtained a 100% license plate recognition success rate, while the Telegram-based OTP system achieved a 100% success rate for both delivery and verification, with an average delivery time of 1.15 seconds and an average verification time of 3.01 seconds. The gate mechanism recorded an average opening time of 1.31 seconds and a closing time of 1.29 seconds. The results indicate that the proposed system operates effectively, and reliably as an IoT-based residential security system.