Defect Detection in High-Speed Railway Overhead Contact System: Importance, Challenges, and Methods

High-speed Railway has become an essential part of society, with an increasing demand for safety. Overhead contact system is an important part of the power supply system with wide variety of fasteners. Affected by the natural environment and vibration during train operation, these parts may loosen or fall off. For safety reasons, automatic machine defect detection is required to replace inefficien...