多线程在数据采集处理中的应用

阐述了多线程技术在数据采集处理中的应用过程.系统上位机在从现场通过串口通信拿到监测仪采集的数据后,在进行界面数据显示之前,需要对得到的数据进行各种折算,得到最终数据结果后分两路,一路进行实时显示,一路存入数据库等待随时调用查询.为了使数据折算和数据存储不影响数据的实时显示,对数据折算和数据存储启用了独立线程,保证了系统的实时性.     

基于RS—485的分布式监控系统的设计

一个分布式监控系统的设计,使该系统的下位机完成数据采集和实时控制,上位机完成上传数据的处理和显示。上位机和下位机都采用多线程序技术,一个线程用于通信,另一个线程用于数据处理,从而使系统具有良好的实时性和可靠性。     

基于多线程的分布式监控系统的设计

介绍了一个分布式监控系统的设计,该系统的下位机完成数据采集和实时控制,上位机完成上传数据的处理和显示。上位机和下位机都采用多线程技术,一个线程用于通信,另一个     

基于C++Builder的PC机与单片机串口通信的实现

串口通信是人体重心实时监控软件的主要功能之一.介绍了串口通信协议的设计,研究了在C++ Builder环境下如何利用API函数开发上位机的通信程序,从而实现PC机与单片机的串口通信.经过试验测试和实际运行,通信程序能够准确、快速地完成通信任务.     

基于ARM的多串口数据接收系统设计

针对目前惯导测试系统只能测试一组产品的现状,设计了一种能实现4组惯导产品同时测试的基于微控制器LPC2368的多串口数据接收系统,以提高效率.在综合分析测试需求的基础上,通过对微控制器LPC2368软硬件的设计实现了四路串口数据的同步接收,并且使用USB总线将四路串口数据通过中断传输的方式将数据实时快速上传至测控计算机.通过使用VC＋＋6.0软件的编写完成上位机应用程序的设计,实现了四路串口数据实时的显示、存储及标定.通过大量实验,并对得到的实验数据进行统计和分析,结果表明该系统实现了同步无错误接收四路串口数据的设计要求,具有很好的实用性.     

基于多线程技术的多串口通信

介绍了一个多串口通信模块,该模块采用VC++6.0并结合多线程技术编写,用来处理从远程终端站上传来数据。同时良好的线程同步解决方法也保证了模块程序能够运行更可靠,数据的实时性能更好。     

基于NuDAM模块的多路数据轮循采集系统

以Pc机和凌华智能数据采集模块NuDAM6000系列中的ND-6017、ND-6520为硬件核心,采用mscomm串口控件编程技术,在Windows XP平台下利用VisualC 6.0实现了"多路数据轮循实时采集系统"的研制与开发.该系统实现了智能模块与上位机的通信,完成了单路数据采集;2路、4路和8路数据轮循采集以及数据处理,数据实时显示,数据按通道分离存储.并针对2路、4路进行了冗余设计.     

基于WPF的电能质量检测系统上位机软件设计

电能质量直接影响着电力系统能否安全运行,为了能及时可靠地检测电能质量,采用全新的Windows Presentation Foundation(WPF)技术,设计了一款电能质量检测系统上位机软件。从工业控制上位机软件的特点出发,实现了上位机与下位机的串口通信,绘制了实时数据波形图及谐波波形图,完成了检测数据的清晰显示。该系统人机界面美观,操作方便,数据存储量大,功能完善。     

基于.NET平台的特种电源监控系统

设计了电源监控系统,利用485总线构建上位机PC机与多台TI公司的DSPTMS320F2812的连接,利用VB.NET编写了串口通信程序和Modbus通信协议,并利用多线程技术实时对多台DSP数据进行处理和状态显示.搭建平台,实验证明满足上位机对多台DSP数据传输的实时性和准确性.     

基于有源滤波器的串口通信设计与实现

介绍了基于DSP的并联有源滤波器与上位机的RS-232串口通信设计,给出了DSP串行通信的硬件接口电路和通信协议,并完成了串口通信的软件编程。下位机使用C语言和汇编语言混合编程,上位机采用Visual C++设计界面,并用串口控件MSComm编写串口程序,实现上位机对有源滤波器数据的采集、显示、处理和存储。调试结果表明,该串口通信设计可以实现上位机对有源滤波器的监控。     

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.