基于机器视觉的液晶基板表面缺陷检测系统

介绍一种基于机器视觉的液晶玻璃基板质量在线检测系统。利用分布式视觉处理技术、采用模块化的图像处理系统设计,能够实现缺陷的精确提取与对缺陷的智能分类和分级,满足LCD液晶玻璃基板质量在线检测的需要。     

光学薄膜元器件外观特性机器视觉检测系统

本系统利用工业级摄像头及开发包的机器视觉功能与计算软件编程控制技术相结合,通过与输入控制系统中的标准膜片模板外观品质进行对比,实现高速高效、准确识别检测光学薄膜器件中滤光片的外观缺陷。可在生产线上根据外观品质标准模板中设定的类别进行自动分类装盒。     

关于石油管道设备的维修与保养探析

本文首先阐述了化工设备管道维护的重要性,接着从管道的保温,保冷,防腐,巡检,检修等几个方面依次展开分析,并分别提出了管道维护保养的措施。     

BGA焊点气孔缺陷的特殊结构光质量检测

为了解决球栅阵列（BGA）焊点气孔缺陷的在线检测问题,开发了一种特殊的结构光检测技术。同时用环形红光和十字形绿光发射二极管（LED）照明BGA芯片,通过环形和十字形的中心,布置一个带有远心透镜的电荷耦合器（CCD）摄像机记录小球上红色圆环和绿色十字的图像。根据图像半径方向上的纹理频谱分布特征,引入人工神经网络（ANN）算法对BGA芯片的气孔缺陷进行检测。采用真实的BGA焊点进行实验,结果验证了方法的精度和可行性。     

Several Factors Affecting the Inspection of Wind Turbines by UAV

The country strongly supports the development of new energy industries, with the clean energy wind power industry developing rapidly and the market maturing, the scale of wind farms and installed capacity expanding, and the blade length increasing to 60-70m. The increased blade length and weight increase the probability of damage. the manual inspection method is time-consuming and laborious, with a high economic cost, low inspection efficiency, and high safety risks, and cannot meet the current wind turbine fast and efficient inspection requirements. This paper intro-duces the characteristics of the type of UAV, its working status, and mode, and proposes how to determine the best area for UAV inspection according to the factors that can cause interference to the inspection in the actual wind field, to achieve the demand for fast and efficient inspection of the blade surface and improve the accuracy of inspection. It is believed that with the development of UAV technology, UAVs will play a more important role in the field of in-spection.     

提取与检验电子证据的若干实践要点

提取电子证据应当按照案发后及时保护好计算机犯罪现场、保存涉案计算机和各种资料、收集相关资料、询问当事人、现场勘查文档记录等步骤开展工作。电子证据的存储介质不同,对其检验与固定的方法也不尽相同。     

Embedded simulation on a multiprocessor job scheduling system with inspection

This paper first develops architecture for a multiprocessor job scheduling system with an embedded simulation technique. The architecture provides a shell for applications that are characterized by two scheduling policies, a heuristic algorithm policy and a First-In-First-Out (FIFO) policy. These policies are implemented in the simulation model by using the embedded technique. The paper evaluates these two policies using the queue length, waiting time and flow time as the criteria to compare the performance of these two scheduling policies. Next we designed two simulation situations using two different real world applications. The purpose is to examine the performances of multiprocessor systems with and without inspection operations and two different scheduling policies. The two applications, berth allocation for the container terminal operations and production scheduling arrangement in an Original Equipment Manufacturer (OEM) power supply factory, are studied. The final results show that a proper scheduling policy will perform better than the traditional FIFO approach for a multiprocessor system. Our study also provides guidelines on balancing a system with the addition of a final inspection activity.     

电涡流检测系统仿真分析的前处理技术

基于推进波前网格生成方法,文中提出了一种适合于是流检测系统的有限元分析的可靠的自适应网格生成方法,并以此方法成功地划盼了电涡流检测系统的有限元网络,并给出了仿真分析结果。     

虚拟驾驶的关键技术研究

虚拟驾驶是智能交通的重要组成部分。本文主要研究虚拟驾驶的行驶速度模型、行驶方向控制模型、碰撞检测算法的关键技术,分别从OpenGL和VRML两种方案实现的驾驶模型,从实现后的系统发现,应用OpenGL实现的虚拟驾驶系统使用更灵活,画面更逼真。最后对虚拟驾驶系统进行了展望,推广是可行的。     

全状态防火墙双机热备份的设计与实现

介绍了全状态防火墙的基本概念,阐述双机热备份系统的组成和工作原理,接着详细描述全状态包过滤防火墙的双机热备份模块的设计,包括硬件框架和软件框架,防火墙系统工作状态定义和演变,最后从双机通信、双机同步、双机切换三个方面详细阐明了双机备份系统中的双机控制。