车辆检测传感器综述

介绍了两类典型的车辆检测传感器,即固定式车辆检测传感器:感应线圈检测传感器、超声波检测传感器、微波检测传感器、红外线检测传感器、视频检测传感器、磁力检测传感器以及声学检测传感器;移动式车辆检测传感器:浮动车和探测车。阐述了各种检测传感器的原理、所检测的交通参数以及其适合检测的交通环境,通过比较各种检测传感器的特点,指出了车辆检测传感器的应用方向是多传感器联合检测,旨在对我国车辆检测传感器技术的应用能有所帮助。     

埋地管道检测技术现状与展望

定期对埋地管道进行检测有利于管道的维护管理和完整性评价。对埋地管道常用的外检测和内检测技术进行了综述,包括用于管道缺陷检测的超声检测、涡流检测、漏磁检测和视觉检测,以及用于管道变形检测的通径检测法、超声波法、激光三角法、环形光投射成像法等。阐述了各检测方法的基本原理,总结了各自的优势与局限性,为检测技术的选择提供了有效参考。梳理了埋地管道检测技术的发展现状,特别是电磁超声、漏磁、视觉内检测技术的新进展,分析了管道检测的发展趋势,并给出了一些技术难点的解决思路。目前的研究热点表明,埋地管道检测技术正在朝着复杂化对象的检测新方法、缺陷定量化、检测数据可视化的方向发展。     

电子元件焊接质量检测技术

电子元件焊接质量检测技术有很多种,而本文主要对目测法、自动光学检测、X-Ray检测、超声波检测、电气检测这五种检测进行了分析。     

基于图像处理的汽车安全气囊外形边缘检测装置研究

针对使用千分表检测汽车安全气囊外形边缘检测点数有限、检测速度慢、同一夹具检测品种单一的缺点,研究了一种基于图像处理的气囊外形边缘检测方法。经过图像采集、处理及与模板对比,给出检测结果。检测装置硬件由计算机、CCD相机、经图像采集器、环形灯及检测台架组成。检测装置软件由两部分组成,图像处理软件采用VC语言编程实现,人机接口显示用VB语言实现。实验结果表明该检测方法可行有效。该方法丰富了检测信息,提高了检测速度。通过软件更换模板,可实现不同种类气囊边缘检测。     

基于MSP413单片机的热量表检测系统的研制与开发

以MSP413单片机为核心,研制开发了一种热量表检测系统。该检测系统的硬件部分主要由CPU主控芯片、按键模块、驱动显示模块、温度参数检测模块、流量参数检测模块以及光电隔离模块构成。该检测系统用来检测热量表的流量、进水温度、出水温度、瞬时流量、累计流量温度、流量等参数是否准确。实例表明,该测试系统在检测热量表参数过程中具有操作简单、检测精度高、速度快等特点,并能实时显示检测结果。     

异常入侵检测技术综述

本文主要研究了入侵检测技术中异常检测的多种方法,包括统计异常检测、基于模式预测异常检测、基于数据挖掘异常检测、基于神经网络异常检测以及基于特征选择异常检测等.分析了各种方法的优缺点,并提出了入侵检测技术的发展前景.     

集箱小管径角焊缝相控阵检测研究

介绍了相控阵超声检测在集箱小径管管座角焊缝检测上的应用,分析了小径管管座的结构和检测难点;从相控阵检测的原理、相控阵检测方法、相控阵检测设备阐述了相控阵检测技术在小径管管座角焊缝检测的研究和发展现状,并探讨了相控阵超声检测技术未来的发展方向。     

基于深度卷积神经网络的裂纹检测方法综述

裂纹是威胁民用基础设施安全运行的重要因素之一,及时准确地检测出裂纹可以有效避免事故的发生。基于计算机视觉的自动裂纹检测方法具有操作简单、检测速度快、检测精度高的优点,被广泛应用于桥梁、道路监测、房屋建造、轨道交通等领域。总结了现有裂纹检测主要手段,详细介绍了三类基于深度卷积神经网络的裂纹检测方法,即基于分类的裂纹检测、基于目标检测的裂纹检测、基于像素级分割的裂纹检测,分析了基本原理、优缺点及其实际应用。汇总了裂纹检测领域常用数据集,并探讨了基于深度卷积神经网络的检测方法存在的问题,对其未来发展进行了展望。     

入侵检测模型实用分析与研究

该文给出了异常检测、误用检测、特征检测和关联检测的实用模型,并对各种入侵检测模型的原理和主要功能进行了深入分析和研究,在此基础上给出了四种入侵检测模型性能比较及入侵检测发展趋势展望。     

异常入侵检测技术综述

本文主要研究了入侵检测技术中异常检测的多种方法,包括统计异常检测、基于模式预测异常检测、基于数据挖掘异常检测、基于神经网络异常检测以及基于特征选择异常检测等。分析了各种方法的优缺点,并提出了入侵检测技术的发展前景。     

Only connect: teaching, technology and telesis

Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.     

European Community policy and the market

Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.     

一种自适应子融合集成多分类器方法

融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

Avoiding semantic and temporal gaps in developing software intensive systems

Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。     

Designing economic np control charts: A programmed simulation approach

This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.     

基于AD9626的模拟信号采集存储卡设计

自然界的绝大部分信号都是以模拟的形式存在,因此模拟信号的采集转换存储在数字时代十分关键。文章讨论了在雷达信号处理领域基于AD9626的AD采集存储卡的设计原理、硬件结构和程序设计与芯片配置等问题,为今后相关领域的研究提供了可参考的方案。     

The development of robot art

Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008     

A human-computer interface for non-computer specialists

The COM teleconferencing system was designed to be easy to use for both beginners and people with much computer experience. A number of design choices in organizing the human-computer interface were considered very carefully. These design problems are not unique for teleconferencing applications, but will appear in many other developments of human-computer interfaces for non-computer specialists. This report discusses naming conventions, menu format, user commands, help facility and the treatment of ‘type ahead’ from the users.