| 李 筠,梁 坤,杨海马,邹星林,李 凡.高精度钢轨端面坡度测量算法研究[J].电子测量与仪器学报,2022,36(9):29-36 |
| 高精度钢轨端面坡度测量算法研究 |
| Research on high precision slope measurement algorithm for rail end face |
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| DOI： |
| 中文关键词: 钢轨检测 垂直度 垂直坡度 直角尺模型 |
| 英文关键词:rail inspection verticality slope of end face right-angle ruler mode |
| 基金项目:中国科学院空间主动光电技术重点实验室开放基金（2021 ZDKF 4）、国家自然科学基金联合基金（U1831133）项目资助 |
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| 中文摘要: |
| 当前国内在焊接钢轨之前需要通过塞尺与角度尺等接触式工具测量钢轨垂直度与端面坡度,由于人工测量步骤复杂,
测量效率低,故研究了一种基于激光轮廓仪非接触式钢轨测量系统。 系统由 4 个激光轮廓仪采集钢轨整个端面及侧面信息,然
后运用二面角原理完成钢轨端面与侧面、端面与底面夹角的计算,最后再通过直角尺模型测得端面坡度。 经现场测试,钢轨垂
直度的重复测量误差小于 0. 2°,测量精度最高可达 0. 3°,端面坡度极限误差达到 0. 04 mm。 实验结果证明所设计系统能够高效
而又稳定地完成钢轨垂直度的检测工作,满足实际测试要求。 |
| 英文摘要: |
| At present, it is necessary to measure the rail verticality and end slope by contact tools such as feeler gauge and angle gauge
before welding rails in China. Due to the complicated manual measurement steps and low measurement efficiency, a non-contact rail
measurement system based on laser profilometer is developed. Four laser profilers collect the information of the whole end face and side
of the rail, then use the principle of dihedral angle to complete the calculation of the angle between the end face and side, end face and
bottom surface of the rail. Finally, the end face slope is measured by the right-angle ruler model. After the field tests, the repeated
measurement error of rail verticality is less than 0. 2°, the measurement accuracy can reach up to 0. 3°, and the limit error of end face
slope reaches 0. 04 mm. The experimental results prove that the designed system can efficiently and stably complete the inspection of rail
verticality and meet the actual test requirements. |
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