Continuous Day-and-Night and Long Term Analysis of Rail Temperature for Railway Using All-Sphere Visible Element

Key Points

• This research aims to develop a method for continuous and long-term analysis of rail temperature through detailed thermal evaluations.
• Utilized all-sphere visible elements for visualizing surrounding land features in a 3D polar coordinate system.
• Applied Lambert-Beer law to model long-wave radiation and reflection.
• Adjusted light absorption coefficient for varying humidity levels across seasons.
• RMSE for summer measurements ranged from 1.4℃ to 2.5℃; winter measurements ranged from 1.6℃ to 2.1℃.
• Validation of proposed method demonstrated its effectiveness for rail temperature monitoring.
• Estimated calculation time for 100km rail over one year was approximately 16 hours.