Microcontroller – Based Automatic Railway Crossing Control and Track Obstacle Monitoring System

Abstract: In many countries, a significant number of accidents occur at unmanned level crossings, where the lacks of human supervision and obstacles on the tracks have become serious daily concerns. Traditionally, railway gates are operated manually by gatekeepers. This paper proposes replacing manual operations with an automated railway gate system utilising Arduino, Sensors, Servo Motors, Buzzers and GSM modules to eliminate human intervention and reduce accident risk. The system detects trains and track objects using sensors positioned alongside the tracks. When a train approaches, the gate closes automatically and the system issues alerts to prevent accidents. Once the train departs, the gate reopens. Compared to manual operation, the automated gates are closed for a shorter duration. Obstacle detection is achieved in two ways: sensors at the front of the train sense objects on the track, and detected obstacles are communicated to nearby railway stations via GSM technology. The system employs infrared sensors to monitor train arrival and departure, ultrasonic sensors for obstacle detection, and Arduino to manage gate operation and messaging. The automated approach improves safety, efficiency and reliability at rail crossings.

Arduino, GSM modem, Obstacle, Infrared sensor, Ultrasonic sensor

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