一种XLPE电缆料中杂质颗粒高分辨力测量的方法  

Method of high resolution measurement for contamination particles in XLPE insulating compound

作　　者：崔思海[1] 赵洪[1] 王暄[1] 

机构地区：[1]哈尔滨理工大学电气与电子工程学院,黑龙江哈尔滨150040

出　　处：《电机与控制学报》2010年第7期87-90,98,共5页Electric Machines and Control

基　　金：国家科技支撑计划课题(2007BAE19B01)

摘　　要：通过分析透镜的成像规律,提出了一种利用光学系统的小孔对光的衍射作用,使像函数的特定部分进行了展宽,在不损失测量速度的情况下进一步提高交联聚乙烯(XLPE)电缆绝缘中杂质颗粒测量分辨力的新方法。在尺寸测量解算中利用三次样条函数对CCD像元输出进行插值,计算出阈值对应的位置,再由测量阈值计算出该值对应的像元位置。基于该原理工作的测量系统可获得分辨力为20μm,准确度为±5μm的实际测量结果,并且测量速度约每小时1 kg。该方法能够实现对高压交联聚乙烯(XLPE)电缆绝缘料和电缆超净生产中的杂质颗粒高速、高分辨力自动检测。By analyzing laws of the lens image,a new method with high resolution and speed of inspecting the contamination particles in XLPE insulating compound,which used the pinhole diffraction effect of the lens to broaden the special part of image function,was given in this paper.Cubic splines were used to in-terpolate the CCD image output to calculate the corresponding position of threshold,then to calculate the corresponding element position.This method can greatly raise the precision of size measurement.In ex-periments,20μm resolution,± 5μm precision and 1kg per hour speed were achieved.Auto contamina-tion measuring of contamination particles in the production high cleanlily XLPE cable insluting materials and cable production high speedly and high resolution are realized by the method.

关 键 词：高分辨力 准确度 杂质测量 电缆绝缘料 

分 类 号：TP274[自动化与计算机技术—检测技术与自动化装置]