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Diagnostic for Deterioration of Electrical Insulation by Means of Stereo Image by Image Sensor

利用图像传感器的立体图像诊断电绝缘劣化

基本信息

批准号：
63550199
负责人：
YOSHIMURA Noboru
金额：
$ 1.41万
依托单位：
Akita University
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1988
资助国家：
日本
起止时间：
1988 至 1989
项目状态：
已结题

项目摘要

A system to automatically measure tree and tracking degradation phenomena in organic insulating materials using a video camera was investigated. Using video graphic processing technique, tree-length for treeing degradation and tracking one immediately, after tree and track initiation. as well as changes in the configuration of tree and track were measured. which up to now have been extremely difficult to observe by conventional visual methods.During the application of a high 50 Hz alternating voltage in and on the sample, the images of tree and track are taken with a video camera through an optical microscope and recorded on video tape. The recorded image is then played back into the image processing unit. The image processor, is controlled by a personal computer(PC-9801,NEC). The image processor threshold was set by the computer to extract only a binary images of tree and track. Tree and track-growths are determined by counting the number of pixels in the tree image from the tip of the electrode to the outer edge of the tree image. and track one from the bottom of the electrode. The area is determined by counting the number of pixels.As a result we were able, in the long-time breakdown test, to demonstrate characteristic differences in tree and track-length and surface area according to the size of the applied voltages in the period immediately after initialization. It can be concluded that the automatic measurement of the treeing and tracking breakdown phenomenon by video-graphic processing is a useful method for elucidating the insulating materials.

研究了一种利用摄像机自动测量有机绝缘材料中树枝和跟踪降解现象的系统。利用视频图形处理技术，在树和轨迹初始化后，立即对树的长度进行退化和跟踪。以及树和轨道的配置变化进行了测量。在样品中和样品上施加50 Hz的高交流电压期间，用摄像机通过光学显微镜拍摄树木和轨迹的图像，并记录在录像带上。记录的图像然后被回放到图像处理单元中。图像处理器由个人计算机（PC-9801，NEC）控制。图像处理器通过计算机设定阈值，只提取出一棵树的二值图像和轨迹。通过计算从电极尖端到树图像外边缘的树图像中的像素数来确定树和轨迹生长。并从电极底部追踪一个。面积是通过计算像素数来确定的。因此，在长时间击穿测试中，我们能够根据初始化后立即施加的电压大小，展示树和轨迹长度以及表面积的特性差异。可以认为，利用视频图像处理技术自动测量树枝状击穿和径迹击穿现象是一种有效的方法。