Revolutionizing Sri Lankan railway travel with integrated tracking and smart ticketing solutions.
Each RFID card uses AES encryption and contains 16 memory blocks. We use Block 0 to store the card UID and Block 2 to store travel data such as start station ID, travel time, and available balance. This enables secure offline user verification even when backend access is unavailable.
The system operates in two modes: Online Mode verifies the card balance and syncs with the backend in real time. Offline Mode authorizes passengers locally using card data and stores travel logs in ESP32 flash memory. Once online, all stored logs are synced securely to the backend.
The ESP32 uses its dual-core architecture efficiently. One core handles RFID scanning and user interaction, while the other manages backend communication (via GSM), card transaction processing, and GPS data updates , all in parallel.
A SIM808 module connects GPS with GSM functionality. It captures the live location of the train and transmits it through a 2G GSM network. A proxy server then upgrades this signal to HTTPS to ensure secure communication with cloud servers.
When the system is offline, all tap-in and tap-out data (station ID, time, fare details) are written to local flash memory. This ensures nothing is lost. When internet is restored, the ESP32 pushes this data to the backend.
The LCD connected via an I2C interface provides instant visual feedback, showing card status, balance alerts, validation success, failure, or error messages. This helps both users and system administrators in debugging or verifying actions.
Processes data, controls LCD, connects to AWS, and manages RFID scanner and Wi-Fi.
Stores passenger NIC, travel time, station ID, and card validity.
Reads and writes to the RFID card, triggers train access logging.
Shows travel info, validation messages, and debug outputs.
Receives GPS signals and transmits coordinates to cloud (AWS) via GSM.
Enables serial-to-parallel communication for the LCD screen.
From design to reality – development of the scanner and door system.
The smart scanner allows passengers to tap in and out using an RFID smart card. It verifies card validity, checks balance, logs entry/exit stations and timestamps, and updates fares securely, both online and offline.
The electric door opens only for authorized passengers. It checks card validity and balance before unlocking. At destination, it verifies trip completion and allows secure exit, ensuring controlled station access.
Our smart railway web app is designed to streamline operations, simplify travel, and ensure seamless interaction between Passengers, Station Officers, and Admins. Each user role gets a dedicated dashboard tailored to their tasks and responsibilities.
Easily manage your journey with a smart card-enabled system designed for convenience.
Station staff can access powerful tools to register passengers, monitor activity, and view daily station performance.
Admins oversee the entire system: register stations, analyze revenue, and monitor all stations and train movement live.
The RailLynk project is more than just a ticketing system, it’s a step toward smarter, safer, and more efficient public transportation. By combining secure RFID technology, real-time GPS tracking, and a robust backend system, we aim to deliver a reliable solution for both passengers and railway operators.
Our goal is to modernize the railway experience with automation, transparency, and connectivity, making travel seamless and accessible to all, even in remote areas with limited connectivity.
E/20/284
E/20/286
E/20/279
E/20/078
