SJCEM Navigator: A Sensor-Fusion Based Indoor Navigation and Academic Management Framework

Mr. Om Pradip Patil

Mrs. Karishma Tamboli

Ms. Simran Verma

Mr. Shivlal Yadav

St. John College of Engineering and Management, Palghar

Abstract : Modern engineering campuses are becoming increasingly complex, often consisting of multiple multi-story buildings that can be confusing for students and visitors. While outdoor navigation is easily handled by GPS, these signals effectively disappear once a user enters a building. This paper introduces "SJCEM Navigator," a mobile solution designed to solve the "last-mile" navigation problem indoors without relying on expensive hardware like Bluetooth beacons. We developed a custom navigation engine using Flutter that fuses data from a smartphone's accelerometer, gyroscope, and magnetometer. By processing this raw sensor data through a Kalman Filter, we achieved stable indoor positioning. Beyond navigation, the system also acts as a centralized academic hub, integrating real-time timetables, faculty tracking, and secure peer-to-peer communication via a Supabase backend. The result is a unified platform that not only guides students to their classrooms but also keeps them connected to their academic life.

Keywords: Indoor Localization, Kalman Filter, Sensor Fusion, Flutter, Smart Campus, Supabase, Mobile Application.