Automated Railway Barricade Monitoring System

Abstract

The increasing number of accidents at unmanned railway crossings has become a serious concern for public safety. Conventional manual barricade systems are often inefficient due to human error, delays, or negligence, leading to life-threatening collisions between trains and vehicles. To overcome these challenges, this project proposes an automated Railway Barricade Monitoring System using the ESP32 microcontroller, infrared (IR) sensors, LCD display, DC motor with H-Bridge driver, and signal indicators. In the proposed system, two IR sensors are strategically placed on either side of the railway track to detect the entry and exit of a train. When the first IR sensor detects an approaching train, the ESP32 activates the gate mechanism through an H-Bridge motor driver, lowering the barricade to restrict road traffic. Simultaneously, the signal indicators switch states the red light turns ON, and the green light turns OFF—alerting vehicles and pedestrians about the train’s arrival. The LCD display provides real-time status messages, such as “Train Arriving,” “Gate Closing,” or “Gate Open,” ensuring visual feedback for monitoring. Once the second IR sensor confirms that the train has completely passed, the ESP32 commands the motor to raise the gate, restoring normal road traffic flow by turning the red light OFF and the green light ON. An additional feature of this system is the automatic reset capability of the ESP32 after each complete cycle, ensuring the controller always starts in a fresh, predictable state before monitoring the next train. The system can also record the number of gate cycles using non-volatile memory, which can be useful for long-term maintenance analysis.