Research on Geometric Parameter Detection System of Modern Tram Power Supply Rail

Recently, modern tram has developed rapidly, power supply rail, as a new power supply mode, has been applied extensively as well. However, the acceptance and maintenance of power supply rail are still in the stage of manual detection with inefficiency and imprecision. In this connection, the paper develops a geometric parameter detection system for power supply rail of modern tram to measure the height and center line deviation of power supply rail. Combined with geometric characteristics of power supply rail, the paper proposes a synthesized filtering algorithm with adaptive function to eliminate interference points and smooth data. At the same time, the paper suggests an error correction algorithm realizing the dynamic correction of detection error angle caused by vehicle vibration, sensor installation deviation and hunting motion. The experiment result shows that the system has strong anti-interference characteristic and relatively stable error correction capability with accuracy of ± 1 mm which safeguard the safety of power supply in tram.