工控组态软件CONTROL—STAR的通讯协议

组态软件在各种监控过程中使用愈来愈广泛，Control—STAR是我国自行开发的工控组态软件。它具有更好的开放性而受到用户的欢迎。在很多监控场合，尤其是集散式系统，离不开设备之间的通讯，Control－STARV1．5版提供了通讯程序。本文叙述在啤酒发酵生产集散控制系统中，用于Control－STAR的通讯程序协议。1通讯协议通讯协议中包括：电气接口标准，帧结构，包结构，传输方式，差错处理等内容。本协议适用于以工控机为主机，以单片机为从机的一点对多点主从式通讯。电气接口标准采用RS－485。帧结构分为地址帧与数据帧。结构如图l。…     

使用Adapter模式在组态软件中实现串口通讯协议复用

本文使用Adapter模式对组态软件中串口通讯协议部分实现复用．应用该方法可以大大减少使用组态软件与第三方设备进行串口通讯的工作量。     

施耐德电气Vijeo Citect推出征对电能表应用的＋power connect包

2012年5月,施耐德电气组态软件Vi-jeo Citect特别征对电能表的连接推出应用包＋facility。VijeoCitect组态软件已经提供了像IEC60870-5—104,DNP3,MODBUS等连接至常用电能表的协议。＋power connect帮助VijeoCitect轻松连接施耐德电气的ION,PM系列电能表,同时还提供了连接至其它电能表的通讯协议,包括IEC61850。     

NETWORK 6000 DCS 与工控机串行通讯的实现方法

本文介绍了NETWORK6000DCS与工控机之间串行通讯的系统结构、硬件配置、通讯协议和软件编程方法。重点介绍了Modbus通讯协议,给出了系统组态过程及主要通讯程序。这种通讯方式同样可以其他使用MODBUS协议的设备（如支持该协议的PLC控制器）之间通讯问题。     

基于WEINVIEW屏和MODBUS的快速展示界面设计及通信软件方案

快速组态化的人机界面开发已经成为当前触摸屏上位机界面展示的趋势,采用标准的工业级通讯协议可以实现多个领域标准化设备接入,本论文以此为应用背景,结合电子产品的设计需求,实现了以WEINVIEW触摸屏为人机交互平台的上位机界面开发和RS232C电气接口下的标准MODBUS RTU通信协议的数据传输的软件系统构架.采用配套组态软件EB8000开发人机交互界面,该软件具有界面友好、快速上手、操作便捷等特点,组态建模资源丰富,大大减少了开发人员界面设计工程量,并且采用MODBUS RTU协议,其帧格式简单、紧凑、使用容易,易与下位机设备对接,满足开发设计人员和用户对产品的需求.本文最后通过实现一种包括上位机界面、通信模块和下位机控制输出的某仪器产品整机软件系统加以辅证.     

CANopen及在自动络筒机上的应用

CANopen协议是一种基于CAN现场总线的开放的、标准化的高层协议,用于不同CAN总线设备间的通讯控制和网络管理;自动络筒机是集机、电、仪、气为一体化的高水平纺织机械产品。本文介绍了CANopen协议的基本框架、通讯对象和对象字典等,阐述了其在自动络筒机上的运用,包括硬件电路、软件协议和软件流程。     

ModBus在FOXBORO系统中的应用

Modbus协议是自动化系统常用的一种多设备间的通讯传输协议。它已经成为一通用工业标准。标准Modbus协议可以使用RS232、RS485/422兼容串行接口,通信线采用2线制连接,通过Modbus协议使不同厂商生产的控制设备可以连成工业网络,进行集中监控。本文介绍了Modbus协议在天华化肥生产装置SIS逻辑控制系统与DCS控制系统间通讯技改实例,通过硬件组态和软件配置的相应介绍,旨在让读者了解有关ModBus常用组态方法和应用的基本原理,抛砖引玉,在解决其它设备间通讯问题时提供方法。文章着重对SIS和DCS间通讯方式存在问题的分析、认证、设计和施工进行了介绍,并通过SIS和DCS数据交换,为提高生产的管理水平和加强控制功能的解决提供了一种思路。     

CAN总线通信适配卡驱动程序的开发

描述了CAN总线的特点和通讯适配卡的工作原理,以及基本的通讯协议,然后详细阐述了通过DDE通讯在组态软件环境下对CAN适配卡的驱动编程,最后说明了上位机与CAN节点通讯的组态实现。     

CITECT驱动程序开发方法及其通用性研究

通过对CITECT驱动程序工作方式的分析,讨论了CITECT驱动程序的开发过程和方法,给出一种基于CITDDK工具包开发CITECT工控组态软件与非标准化硬件设备通讯驱动程序的实现方法,并就实现过程中驱动程序的通用性进行详细的探讨。     

Modbus TCP协议在水闸监控系统中的应用

介绍了一种水闸自动控制系统,并用ModbusTCP协议实现了远程监控。该系统以可编程控制器（PLC）作为现场控制中心,连接现场控制对象;以悉雅特（Citect）组态软件作为本地上位机主监控界面,监视各设备的运行情况;通过电信专网,采用标准的ModubsTCP协议通讯,实现了对现场设备的集中控制和信息资源共享等功能,系统设计合理,运行可靠。     

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.     

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.     

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     

Explanation and prediction: an architecture for default and abductive reasoning

Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.     

Three Process Perspectives: Organizations, Teams, and People

This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)^SM and Team Software Process (TSP){^SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.