This book focuses on the design and implementation of a railway track crack detection system using infrared (IR) sensors integrated with a GSM communication module. Rail transport is vital for economic growth, but safety concerns due to cracks in tracks and bridges remain a major issue. Traditional detection methods like ultrasonic imaging, RF techniques, and electromagnetic systems, though accurate, often fail in the Indian context due to false positives from thermal gaps, bifurcations, and debris interference.The proposed system employs IR sensors to efficiently detect cracks on both sides of the track, reducing detection time and improving reliability. When a crack is identified, the robot halts and sends an alert message to a pre-programmed mobile number via the GSM module, ensuring immediate reporting without manual involvement. The system is powered by DC motors and controlled through a microcontroller (PIC16F877A), which manages sensor inputs, motor control, and communication. Additional components include an LCD display for real-time monitoring, a relay tripping unit for safety, and a rechargeable battery for mobility.
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