轨旁受电弓在线监测系统高精度标定方法

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中图分类号： U264.3+4 文献标志码：B 文章编号：1671-5276（2025）05-0282-05

High-precision Calibration Method for Trackside Pantograph On—line Monitoring System

LIUHaotong1，GE Xinxin² （1.Nanjing Subway Operation Co.，Ltd.，Nanjing 211135，China;

：.CollgeofMechanicalandElectricalEngineering，NanjingUniversityoferonauticsandAstronautics，anjing6Cina）

Abstract：Toaddresstheissue of increasing thickness ofthe carbonslide plate during the online system detection before andaftertrain operation，a high-precision calibration methodis proposed.Avision system model is established，and related parameters are solved.Acamera calibrationmethod basedonsub一pixel coordinatesand closed—lop constraint model is proposed toresolve large eror in the traditional ZHANG's calibration method.According tothe gradient information of the image，the sub一pixel coordinates of the circlecenter of the calibration plate are extracted by BAZEN method，anda closed-loopconstraint model isconstructedastheresidual error modelof theLMalgorithm tooptimize thecalibration parameters.The experimental results show that the proposed method improves the camera calibration accuracy by about one time，and provides high一precision camera parameters for subsequent measurements.

Keywords：camera;calibration;computer vision

0 引言

人员使用游标卡尺来测量受电弓碳滑板的厚度值，因其测量位置通过肉眼观察进行判断，故测量结果受主观因素影响，存在较大误差[4]]

随着城市发展进程的加速，城市交通问题日益严峻，而地铁凭借其运量大、准点率高、运行速度快及能耗低的特点成为各大城市解决交通问题的核心手段之一[]。（剩余5521字）