摘要
为了研究列车高速运行过程中的轮轨接触状态,利用图像测量原理研制了便携式的轮轨接触状态可视化检测装置。通过钢轨内外两侧安装的高速摄像机,同步采集列车高速通过特定测量区域时的轮轨接触图像,再利用图像处理算法获得每个采样位置的轮轨外形轮廓,识别出轮轨异常接触状态,计算测量区域的轮轨接触轨迹。本文介绍了系统测量原理,重点设计了高速摄像机系统的参数,并给出了静态、动态和高速正线试验条件下装置安装可行性和检测性能的验证结果。
A portable detecting device based on image measurement is developed to study wheel-rail geometrical contact state and make it visible. Two high speed CCD cameras are installed on both side of the rail to capture wheel-rail contact images synchronously while wheels passing through the inspecting area in high speed. Wheel-rail profiles are drawn out by specially designed image processing arithmetic, abnormal geometrical contact states of wheel-rail are recognized, and wheel-rail contacting track along inspecting area are worked out. This paper introduces inspection principle and emphasizes on parameters designing of high speed cameras. Installation feasibility and inspection capability are validated by many experiments, such as static test, dynamic tests in low speed and high speed.
出处
《光电工程》
CAS
CSCD
北大核心
2009年第9期56-60,共5页
Opto-Electronic Engineering
基金
西南交通大学211工程项目(2004-EQ-17-JK-03)
关键词
轮轨
接触状态
图像处理
动态检测
wheel-rail
contact state
image processing
dynamic measurement
