嵌入式机器视觉操作终端通信模块的设计与实现

机器视觉系统通信数据量大、实时性要求高且依赖PC机,针对这些特点本文设计并实现了一种嵌入式操作终端通信模块。该模块采用三星2440作为主芯片,双网卡硬件结构,运行WinCE5.0操作系统,使用Modbus/TCP和自定义协议,通过增加自定义功能码和文件传输规范,使基于客户端/服务器模式的操作终端与智能相机能够一次通信大数据量的文件,很好地满足了视觉系统通信需求。测试表明:该通信模块正确读取和显示相机的配置信息和检测过程中输出的实时运行参数,接收一帧480*360灰度图像平均耗时82ms,具有良好的实时性和可靠性。该模块已成功应用于工业现场,取得了良好的效果。     

基于ModBus/Tcp协议和自定义协议的机器视觉智能终端的设计与实现

提出了一种基于WinCE、ModBus/Tcp协议和自定义协议的机器视觉智能终端的实现方案,解决了传统机器视觉系统应用中因为采用计算机而造成的不便.机器视觉智能终端体积小、便携性好、操作方便,非常适合在工业现场应用;机器视觉智能终端通过以太网、采用ModBus/Tcp协议和自定义协议与智能相机通信,最多可同时连接4个智能相机,相对于计算机价格低廉,宜于大规模应用.     

基于TCP/IP协议的高可靠冗余以太网设计

研究提出一种工业以太网冗余通信方案。结合工业自愈以太环网和节点双网卡技术,设计基于TCP/IP协议的双网卡冗余通信机制,提高了网络数据传输通信的实时性和可靠性。实验证明,设计的方案可保证网络数据传输具备高可靠性。     

嵌入式瘦服务器的实现及在套色系统中的应用

在工业通信和自动化应用中日益采用以太网和TCP/IP协议作为最主要的通信接口。文中介绍以微控制器C8051F020和以太网控制器RTL8019AS来共同实现嵌入式瘦服务器的方案。在C8051F020上加载简化TCP/IP协议,实现基于TCP/IP工业以太网智能节点,该智能节点可通过局域网实现和Internet的数据交换。在微控制器中协议的加载用C51语言编程实现。同时完成智能节点的设计,并给出它在自动套色控制系统中的应用实例。嵌入式瘦服务器的设计与实现,为工业生产提供远程控制机制,也必将对分布式控制技术发展产生深远影响。     

基于嵌入式ARM的Modbus/TCP协议的研究与实现

Modbus/TCP工业以太网是运行在TCP/IP协议栈上的Modbus报文传输协议.分析了Modbus/TCP的协议构成及其体系结构,在嵌入式ARM7和嵌入式实时操作系统μC/OS-II平台上实现了Modbus/TCP协议的客户端和服务器端应用程序,并进行了相关测试.方案能有效实现工业现场的数据采集、处理和Modbus/TCP通信功能.     

基于机器视觉技术的易拉罐罐底喷码检测系统设计

本文根据食品饮料行业易拉罐生产线的工作环境以及罐底喷码检测的检测要求,研制了基于康耐视机器视觉的易拉罐罐底喷码检测系统,实现对易拉罐喷码不合格的产品进行自动检测与快速剔除。该检测系统由光源与视觉处理系统、电气控制与人机交互系统、次品剔除装置等组成。当易拉罐通过成像系统时,金属接近开关触发光源频闪和工业智能相机,获得高速易拉罐罐底图像,智能相机对其分析处理,由电气控制系统执行检测结果,从而达到分拣不良品的目的。通过实际项目应用证明：该系统实时性好,可靠性高,有效地提高了在生产过程中产品喷码质量的控制。     

基于μC/OS-Ⅱ系统的HISLIP代理的设计与实现

针对目前已有的测控系统实时性差、准确性不够、操作不便等缺陷提出了基于μC/OS-Ⅱ系统的HISLIP(High Speed LAN Instrument Protocol)远程测控代理的设计方案。该系统底层硬件采用恩智浦公司的LPC1768微控制器,操作系统采用可靠性、移植性和安全性较好的μC/OS-Ⅱ操作系统;网络层基于TCP/IP(Transmission Control Protocol/Internet Protocol)协议。传输层以客户端服务器(C/S)模式实现HISLIP协议,并将其作为整个测控系统的通信协议。设计实现了以HISLIP协议为主的仪器通信的软件系统,在对代理的软、硬件的设计、编程和测试,实现了远程测控通信的功能模块的实时性、准确性、操作便利的设计要求。     

面向OPC监控平台的Modbus/TCP协议网关研究

工业以太网两设备之间通信的协议主要是Modbus/TCP协议。对传统Modbus协议和Modbus/TCP协议数据帧的格式进行分析,特别为了保证工业以太网OPC监控系统数据的安全性和可靠性,提出网络接口冗余切换算法和网络接口MAC地址绑定,能保证OPC监控系统的实时安全性。在Modbus/TCP协议的工业以太网上实现水泥OPC监控系统,以OPCServer系统和OPCClient系统,两个子系统实现工业机器的参数和数据的控制,并在互连网上进行动态显示。根据动态的数据和参数,对机器进行有效的控制和操作,也可以进行远距离的查询数据,确保整个系统和机器的安全。     

μCModbus：一种实时与并发的Modbus/TCP协议栈设计与实现

Modbus/TCP作为主流的工业以太网标准之一,在工业控制现场得到了广泛的应用.但是Modbus/TCP协议本身并不保证实时性和对数据的并发处理能力.设计并实现了一种基于μC/OS-Ⅱ的Modbus/TCP协议栈——μCModbus,完全兼容Modbus/TCP标准,并提供时实时性和并发处理的能力.测试结果表明,μCModbus具有良好的实时性和并发处理能力,有较高的可用性.     

远程机器人监控系统关键技术的研究和实现

远程机器人监控系统利用Internet实时传输现场图像和发送命令,由于数据量大和实时性要求而存在不少困难,为了解决这些困难,提出四个关键技术,即：改进的行程编码技术,混合压缩编码技术,TCP协议和UDP协议的联合使用技术,TCP多路并发优化和UDP的可靠性优化技术,研究结果表明,这些重要技术既保证了命令传输的可靠性,又保证了机器人现场图象传输的实时性,从而使系统性能得到有效提高,这些技术对远程机器人监控系统的设计具有重要的创新意义。     

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。     

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     

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.     

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.