Development of Automated Gate Using Automatic License Plate Recognition System

Abstract

This paper presents a prototype of automated gate powered by automatic license plate recognition system. The prototype is an embedded system running a Raspbian operating system on the Raspberry Pi microcontroller. A USB camera, LCD, and a servo motor are attached to capture an image of a vehicle, to display information and to represent an automated gate respectively. OpenALPR library is used to perform the license plate recognition, while the complete automated gate system, which is used performing image capturing, license plate recognition, and authentication to gate operation is built using the Node-RED software. As a result, the system successfully recognizes the vehicle number plate and categorize them. All information about the vehicle are displayed on the LCD, and if the vehicle is authorized, the gate operated accordingly. The analysis results show that the system is able to achieve a recognition rate of 87.50–90.90% on images with a specified height and angle.