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基于辅助惯性导航系统的铁路轨道几何参数测量小车系统

A Railway Track Geometry Measuring Trolley System Based on Aided INS.

作者信息

Chen Qijin, Niu Xiaoji, Zuo Lili, Zhang Tisheng, Xiao Fuqin, Liu Yi, Liu Jingnan

机构信息

GNSS Research Center, Wuhan University, No. 129 Luoyu Road, Wuhan 430079, China.

Collaborative Innovation Center of Geospatial Technology, Wuhan University, No. 129 Luoyu Road, Wuhan 430079, China.

出版信息

Sensors (Basel). 2018 Feb 10;18(2):538. doi: 10.3390/s18020538.

DOI:10.3390/s18020538
PMID:29439423
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC5856096/
Abstract

Accurate measurement of the railway track geometry is a task of fundamental importance to ensure the track quality in both the construction phase and the regular maintenance stage. Conventional track geometry measuring trolleys (TGMTs) in combination with classical geodetic surveying apparatus such as total stations alone cannot meet the requirements of measurement accuracy and surveying efficiency at the same time. Accurate and fast track geometry surveying applications call for an innovative surveying method that can measure all or most of the track geometric parameters in short time without interrupting the railway traffic. We provide a novel solution to this problem by integrating an inertial navigation system (INS) with a geodetic surveying apparatus, and design a modular TGMT system based on aided INS, which can be configured according to different surveying tasks including precise adjustment of slab track, providing tamping measurements, measuring track deformation and irregularities, and determination of the track axis. TGMT based on aided INS can operate in mobile surveying mode to significantly improve the surveying efficiency. Key points in the design of the TGMT's architecture and the data processing concept and workflow are introduced in details, which should benefit subsequent research and provide a reference for the implementation of this kind of TGMT. The surveying performance of proposed TGMT with different configurations is assessed in the track geometry surveying experiments and actual projects.

摘要

精确测量铁路轨道几何形状是一项至关重要的任务，对于确保施工阶段和定期维护阶段的轨道质量都具有重要意义。传统的轨道几何形状测量小车（TGMT）与全站仪等经典大地测量仪器单独使用，无法同时满足测量精度和测量效率的要求。精确快速的轨道几何形状测量应用需要一种创新的测量方法，能够在短时间内测量所有或大部分轨道几何参数，同时不中断铁路交通。我们通过将惯性导航系统（INS）与大地测量仪器集成，为这个问题提供了一种新颖的解决方案，并设计了一种基于辅助INS的模块化TGMT系统，该系统可以根据不同的测量任务进行配置，包括板式轨道的精确调整、提供捣固测量、测量轨道变形和不平顺以及确定轨道轴线。基于辅助INS的TGMT可以在移动测量模式下运行，以显著提高测量效率。详细介绍了TGMT的架构设计、数据处理概念和工作流程中的关键点，这将有助于后续研究，并为这种TGMT的实施提供参考。在轨道几何形状测量实验和实际项目中评估了所提出的不同配置的TGMT的测量性能。

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