Measurement Technology of Track Geometric Parameters Based on Three-point Laser Alignment Principle
In response to the problems of laser string jitter in existing laser alignment systems and the inability of manual measurement to directly detect the long wave smoothness of the track,in order to further improve the measurement accuracy of track geometric parameters,combined with the actual operation mode of the tamping vehicle on site,a one launch+two receive mode of transmitting vehicle+receiving vehicle+receiving vehicle was proposed,and research on track measurement technology based on the three-point laser alignment principle was carried out.By fusing data from multiple sensors such as laser strings,track gauges,superelevation,and odometers,the internal geometric parameters of the track were measured.A three-point laser alignment vector distance measurement model was constructed to solve the problem of laser string jitter drift error.The use of receiving vehicle following self-propelled technology has improved measurement efficiency.Through on-site testing experiments,the results show that the internal geometric parameters of the track direction,height,sagittal,gauge,and superelevation measured using the three-point chord technology scheme meet the error requirements for on-site use,and can provide data support for digitalization and intelligent compaction.
normal speed railwaytrack irregularityexperimental researchlaser alignmentgeometric parameter of tracks
万方数据
维普
