基于数字图像处理的轨面竖向动位移远程采集方法  

Remote Acquisition Method of Vertical Dynamic Displacement of Rail Surface Based on Digital Image Processing

作　　者：常建芳 李丽荣[1] 王晓刚 王新超 王梦宇 冯怀平[3] CHANG Jianfang;LI Lirong;WANG Xiaogang;WANG Xingchao;WANG Mengyu;FENG Huaiping(Department of Mechinery and Electrical,Handan Polytechnic College,Handan Hebei 056001,China;China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;State Key Laboratory of Mechanical Behavior and System Safety of Traffic Engineering tructures,Shijiazhuang Tiedao University,Shijiazhuang 050043,China;Architectural Design and Research Institute,China Railway Fifth Survey and Design Institute Group Co.Ltd.,Beijing 102600,China)

机构地区：[1]邯郸职业技术学院,河北邯郸056001 [2]中国铁道科学研究院集团有限公司,北京100081 [3]石家庄铁道大学省部共建交通工程结构力学行为与系统安全国家重点实验室,石家庄050043 [4]中铁五院集团有限公司建筑设计研究院,北京102600

出　　处：《铁道建筑》2022年第3期66-70,共5页Railway Engineering

基　　金：河北省自然科学基金(E2019210137);中央引导地方项目(216Z1805G)。

摘　　要：针对传统轨道接触式动位移测试的不足,通过红外感应相机作为图像采集触发装置及远程数据发送装置,研发了一套现场轨道动位移图像采集装置及方法。在优选合理标志物的基础上,利用室内动三轴仪试验验证了该方法对振动波形和幅值均有较好的适用性,且精度较高。利用该技术进行现场长期测试,结果表明该方法可以实现无人值守轨道动位移长期监测,通过远程传输技术,实现现场动位移幅值的实时传输。动位移幅值基本服从正态分布,车型(轴重)对钢轨竖向位移影响较为明显。Aiming at the deficiency of traditional track contact dynamic displacement test,a set of on-site track dynamic displacement image acquisition device and method were developed by using infrared induction camera as image acquisition trigger device and remote data transmission device. Based on the optimization of reasonable markers,the indoor dynamic triaxial test verifies that the method was suitable for vibration waveform and amplitude,and the accuracy was relatively high. Using this technology for long-term field testing,the results show that this method can realize the long-term monitoring of dynamic displacement of unattended track,and realize the real-time transmission of field dynamic displacement amplitude through remote transmission technology. The dynamic displacement amplitude basically obeys the normal distribution,and the vehicle type(axle load)has an obvious influence on the vertical deformation of rail.

关 键 词：轨道竖向位移 数字图像处理技术 试验研究 非接触式测量 远程实时传输 

分 类 号：U213.2[交通运输工程—道路与铁道工程]