Smart Classroom Allocation and Booking System Using IoT

This paper has presented the design, implementation, and experimental evaluation of a Smart Classroom Allocation and Booking System based on IoT infrastructure principles. The system successfully integrates RFID-based faculty authentication, cloud-connected schedule validation via Firebase, embedded processing on the ESP32 microcontroller, and live status display to automate and secure classroom access management in educational institutions. Experimental results demonstrate that the system achieves high verification accuracy (99.5%), rapid response times (average 305 ms), reliable unauthorized access prevention (100% denial rate), and sufficient battery endurance (8.9 hours) for full-day academic operation. The feature comparison in Table III confirms that the proposed system addresses a genuine gap in existing literature by unifying verification, scheduling, and monitoring in a single portable platform. The system contributes to the broader vision of smart campus infrastructure by reducing administrative overhead, improving classroom utilization, and providing administrators with transparent, auditable access logs. Its modular design and use of widely available, low-cost components ensure that the solution is both economically feasible and adaptable to institutions of varying scales.

[1] K. Kumar, "RFID-Based Student Attendance System," in Proc. IEEE Int. Conf. on Electronics and Communication Systems, Coimbatore, India, Feb. 2018, pp. 112–116. [2] S. Sharma, "IoT Based Smart Classroom System," in Proc. IEEE Int. Conf. on IoT and Connected Technologies, Noida, India, May 2019, pp. 45–50. [3] A. Verma, "Cloud-Based Smart Classroom Management System," IEEE Access, vol. 8, pp. 87234– 87245, 2020. [4] R. Patel, "ESP32 Based IoT Monitoring System," in Proc. IEEE Int. Conf. on Computing and Network Communications (CoCoNet), Trivandrum, India, Dec. 2020, pp. 200–205. [5] J. Lee, "IoT-Based Smart Campus System," IEEE Trans. Educ., vol. 62, no. 3, pp. 180–188, Aug. 2019. [6] M. Weiser, "The Computer for the 21st Century," Scientific American, vol. 265, no. 3, pp. 94–104, Sep. 1991. [7] J. Gubbi, R. Buyya, S. Marusic, and M. Palaniswami, "Internet of Things (IoT): A vision, architectural elements, and future directions," Future Generation Computer Systems, vol. 29, no. 7, pp. 1645– 1660, Sep. 2013. [8] Google LLC, "Firebase Realtime Database Documentation," [Online]. Available: https://firebase.google.com/docs/database. [Accessed: Apr. 2025]. [9] Espressif Systems, "ESP32 Technical Reference Manual," Rev. 5.1, 2023. [Online]. Available: https://www.espressif.com/sites/default/files/documentati on/esp32_technical_reference_manual_en.pdf. [10]  NXP Semiconductors, "MFRC522 Standard Performance MIFARE and NTAG Frontend, Product Data Sheet," Rev. 3.9, Apr. 2016.