基于嵌入式计算机的紫外内窥系统

UV endoscopic system based on embedded computer

针对电气设备特殊的内部环境,将紫外放电检测和视频内窥技术相结合,研制了具有紫外放电检测和图像采集功能的紫外内窥检测系统。介绍了紫外脉冲放电信号的检测原理、检测系统硬件平台的构建、嵌入式Linux操作系统和Qtopia文件系统的启动与运行以及USB摄像头的视频图像采集,并给出了该新型电气设备内窥系统的应用程序流程图。实验结果表明:该系统能够准确探测出电气设备内2 m以内的局部放电现象,并以图像的方式显示出故障点。通过实验,验证了该紫外内窥系统在电气设备检测方面的实用性。

A new electric endoscopic system based on the technologies of embedded system, ultraviolet discharge detection and image acquisition is introduced. The theory of ultraviolet discharge detection, block diagram of hardware platform, process of running embedded Linux and Qtopia file system, and the method of image acquisition by USB camera are discussed, and the flow chart of system application program is given. The experimental results indicate that the UV endoscopic system can detect the internal discharge of electric equipment within 2 m and show the fault point by images. The simulation experiments prove the practicability of the new electric endoscopic system in detecting electric equipment.