摘要
架空接触线的位置是否合理直接影响受电弓-接触线的接触工况,关系到受流稳定、磨耗以及列车供电与行驶安全,需要定期对其进行测量与调整。为了进一步提高柔性架空接触线识别方法的准确性,提出了一种基于线激光扫描技术的接触线测量方法,用于获取接触线的导高、拉出值、磨耗深度。该方法利用面阵相机采集线激光在接触线表面的反射光斑图像并进行位置解算,然而吊弦等附属装置会导致图像中容易夹杂异常光斑干扰目标提取,导致测量数据失真。为了解决该问题,提出鲸鱼算法优化支持向量机算法(whales optimization algorithm and support vector machine,WOA-SVM)对线激光图像进行识别与粗定位,以锁定正常的接触线光斑区域,实现对架空接触线的位置测量。实验证明,WOA-SVM算法在接触线连通域识别中具有高可靠性,其准确度为99.86%,特异性为95.65%,可有效抑制异常光斑干扰,满足实际工程应用需求。
The position of the overhead contact wire directly affects pantograph-catenary contact conditions,thereby influencing currentcollection stability,wear,and the operational safety of trains.In order to improve the accuracy of flexible overhead contact line identification method,a contact line measurement method based on line laser scanning technology is proposed to obtain the contact wire height,stagger,and wear depth.The method uses an area-scan camera to capture images of laser reflections on the contact wire surface and perform position calculation,however,accessories such as droppers often generate strong specular reflections and abnormal light spots,which interfere with target extraction and distort the measurements.To address this,whales optimization algorithm and support vector machine(WOA-SVM)is used to classify and coarsely localize the laser stripe,thereby locking valid contact-wire region to achieve the measurement of the overhead contact line position.Experimental results show that the proposed method achieves 99.86%accuracy and 95.65%specificity in recognizing the contact-wire connected region,making the approach well suited for engineering applications.
作者
许冀阳
吴学勤
XU Jiyang;WU Xueqin(Shaanxi Polytechnic University,Xianyan 712000,Shaanxi,China;Chang′an University,Xi′an 710064,Shaanxi,China)
出处
《自动化技术与应用》
2026年第4期73-77,共5页
Techniques of Automation and Applications
