Attendance Monitoring Using Adjustable Power UHF RFID and Web-Based Real-Time Automated Information System

Abstract

The attendance system has a significant impact on university and students’ academic achievement. The design of a university automatic attendance system using Ultra-High Frequency RFID technology with four circularly polarized antennas with coverage distances ranging from 1 to 3 m is presented in this study. When integrated with web technology, RFID technology assures rapid speed, high accuracy, and user-friendliness, upgradability, and data protection in the digital age. The proposed system was evaluated with 142 samples in two classrooms measuring 5 m × 5 m and 5 m × 8 m. The team offers a technique to automatically calibrate card reader power based on when students enter or leave the class and the operating distance measured using experiment equipment; in contrast, the card reader will reduce its capacity while ensuring attendance. This mechanism saves power while also extending the life of the RFID reader. The conventional circular polarization antenna design fulfills the requirement, according to the axis ratio value and radiation patterns measurements. The proposed software allows the lecturer to directly examine the student’s status by displaying the student’s name in real-time in case of card fraud. Furthermore, our system supports a feature that allows teachers to activate manual attendance when students forget or lose their cards. Finally, it automatically provides the student’s learning status for each subject weekly. It also provides the instructor with the overall proportion of students engaging in the subjects so that the teacher can get the complete picture. With the initial assessment, our system plays a positive role in reminding students of the number of lessons via email so that they are more aware of the situation and more inclined to visit class, as well as automatically digitizing and visualizing the sessions’ attendance for the teacher in terms of statistics.