船用双电源转换控制器的研制

传统双电源开关,多采用继电器方式控制,但在船舶等颠簸环境下使用,继电器有可能发生误触发,因而有工作不可靠的缺点.电子式数字控制双电源具有操作简便、工作可靠、能监控显示电源多种状态、可以远程控制等众多特点.介绍了P89C66x单片机为核心、在传统模拟继电器式双电源的基础上开发的电子式的数字船用双电源转换控制器的结构和软件编程.     

单车车载式60Co集装箱检测系统辐射源装置

文章涉及单车车载式60Co集装箱检测系统辐射源装置的结构设计方案和工作原理。该辐射源装置样机的试验运行结果表明:辐射源装置的工作和运输状态可靠安全、操作方便,满足了单车车载式60Co集装箱检测系统要求。     

视觉检测系统及其应用

视觉检测技术是建立在计算机视觉研究基础上的一门新兴检测技术，基于视觉传感器的检测系统具有抗干扰能力强。效率高，组成简单等优点，非常适合生产现场的在线，非接触检测及监控。本文介绍了该技术在烟草行业包装生产线上的应用方案。     

非接触IC卡在铁路巡道系统中的应用

非接触IC卡是世界上最近几年发展起来的一项新技术，它成功地解决了无源和免接触这难题，是电子器件领域的大突破。本文介绍了非接触IC卡的技术原理以及在铁路巡道系统中的应用，文章详细阐述了铁路巡道系统的硬件组成和软件设计。     

Statistical Pattern Modeling in Vision-Based Quality Control Systems

Machine vision technology improves productivity and quality management and provides a competitive advantage to industries that employ this technology. In this article, visual inspection and quality control theory are combined to develop a robust inspection system with manufacturing applications. The inspection process might be defined as the one used to determine if a given product fulfills a priori specifications, which are the quality standard. In the case of visual inspection, these specifications include the absence of defects, such as lack (or excess) of material, homogeneous visual aspect, required color, predetermined texture, etc. The characterization of the visual aspect of metallic surfaces is studied using quality control chars, which are a graphical technique used to compare on-line capabilities of a product with respect to these specifications. Original algorithms are proposed for implementation in automated visual inspection applications with on-line execution requirements. The proposed artificial vision method is a hybrid between the two usual methods of pattern comparison and theoretical decision. It incorporates quality control theory to statistically model the pattern for defect-free products. Specifically, individual control charts with 6-sigma limits are set so the inspection error is minimized. Experimental studies with metallic surfaces help demonstrate the efficacy and robustness of the proposed methodology.     

基于Windows2000的NAT技术及状态检测防火墙的应用设计

介绍了 NAT和状态检测防火墙技术 ,通过一个实例 ,给出了在 Windows2 0 0 0 server环境下 NAT及状态检测防火墙技术的应用实现方法     

一种与入侵检测互动的Internet安全防范系统

基于对目前网络安全状况和技术发展的思考,该文对传统的参考监视器模型做了改进,据此提出了一种高性能Internet安全防范系统,并探讨了如何通过状态检查和入侵检测的互动与集成来实施该系统。     

斜面焊口超声波探伤中的缺陷定位

详细介绍了在斜面焊口超声波探伤中采用声程调节扫描比例进行缺陷定位的计算方法，并给出了计算公式。     

Polarization Phase-Based Method For Material Classification In Computer Vision

A robust and accurate polarization phase-based technique for material classification is presented. The novelty of this technique is three-fold in (i) its theoretical development, (ii) application, and, (iii) experimental implementation. The concept of phase of polarization of a light wave is introduced to computer vision for discrimination between materials according to their intrinsic electrical conductivity, such as distinguishing conducting metals, and poorly conducting dielectrics. Previous work has used intensity, color and polarization component ratios. This new method is based on the physical principle that metals retard orthogonal components of light upon reflection while dielectrics do not. This method has significant complementary advantages with respect to existing techniques, is computationally efficient, and can be easily implemented with existing imaging technology. Experiments for real circuit board inspection, nonconductive and conductive glass, and, outdoor object recognition have been performed to demonstrate its accuracy and potential capabilities.     

求激光漫反射中心新算法

分析激光在作为测量光源的特点，提出使用三角形法进行快速尺寸测量时求激光漫 反射中心的新算法。