基于BASCOM-AVR的多路数据采集系统

介绍了一种使用BASCOM-AVR软件仿真平台开发的总线型数据采集系统.包括上位机PC一台和下位机AT89c52若干.上位机通过用LabVIEW设计的软件模板控制下位机进行数据采集和测量.下位机可以单独测量也可以与上位机组成网络进行远程测量.上位机与下位机之间既可通过RS485口通讯,也可以通过USB接口通讯.     

多通道生理参数采集模块的USB接口设计

采用USB接口芯片和多通道生理参数采集模块设计了一种采集模块与上位机PC通信的USB接口,实现了多通道生理参数的实时数据采集。从通信实现的上位机和下位机两方面讨论了接口的设计和实现过程。阐述了基于PC的上位机驱动程序设计,基于USB接口芯片的下位机硬件设计和固件设计,与PC串口通信对比了数据通信的实时性和准确性。     

基于LabVIEW 8.20的单片机数据采集系统设计

设计了一个由PC机与单片机组成的上下位机数据采集系统,上位机以LabVIEW为软件平台,下位机以单片机、A/D转换器为主控芯片构成数据采集电路。详细介绍了上位机基于LabVIEW实现数据的串行通信,下位机基于A/D转换器ADC0809完成数据的采集。     

基于LabVIEW无线数据控制与传输系统的设计

将无线传输技术与虚拟仪器技术相结合,设计了一种数据控制与传输系统.该系统具有控制指令发送、数据发送和数据接收3种工作方式,控制指令和传输数据两种信息类型.通过系统结构设计、电路设计、通信协议设计、软件设计、LabVIEW系统界面和USB驱动程序设计等,该系统可以向微处理器发送控制指令信息,设置上位机和下位机工作模式和工作参数,实现传输数据信息发送和接收的半双工通信功能.整体设计表明,为无线数据的控制与传输提供一种设计方法.     

基于USB串口的LabVIEW与MSP430通信实现

为了对小型独立光伏发电装置进行状态监测,设计了一种基于LabVIEW和MSP430单片机的USB串口通信系统.用高精度的USB-UAKT桥接器CP2102将MSP430的UART0转换成USB口,通过USB电缆实现上层监测和下位控制器间的数据通信.通信采用Modbus-RTU协议并结合CRC校验方式,下位机为从站,上位机为主站,在LabVIEW和C51编程环境下编写了通信程序.现场应用和实验表明,该系统具有较高的数据可靠性和较强的环境适应性,可广泛应用于测控系统中.     

基于AT89C51单片机和LabVIEW的温度监控系统设计

设计了一种以AT89C51单片机为核心的温度监控系统,系统利用数字温度传感器DS18B20得到温度信号,AT89C51单片机将采集得到的数据经D/A和A/D转换后,经USB2005数据采集卡传递到上位机的USB接口,上位机软件利用LabVIEW软件控制数据采集卡USB2005,并利用其所带的驱动进行数据采集和处理。本系统电路采用模块化设计,温度测量范围随时可调,并利用上位机对测量的温度进行实时显示,可读性好。     

基于LabVIEW的无线分布式数据采集系统

基于图形化编程语言LabVIEW,结合单片机控制和无线通讯,构建了集散型结构的无线分布式数据采集系统,给出了系统总体结构、上位机LabVIEW软件设计、数据采集卡设计和通讯协议设计。该系统利用串行通信技术和无线通讯技术,将个人电脑（上位机）和数据采集卡（下位机）连接起来,实现多现场、多通道,实时或存储转发模式的数据采集、控制和数据处理。在RS-232接口波特率9600Hz条件下,实现最大集散距离1000米、8台下位机、48个通道、多传感器、多种采样频率、总数据流量最大870bps的数据采集。     

基于ARM7和LabVIEW的岩土工程多路数据采集系统设计

该文利用ARM7 S3C44B0处理器为核心并辅以必要的外围电路作为下位机进行多路数据采集,上位机采用LabVIEW软件设计应用程序进行数据采集控制、数据处理、曲线显示、数据保存等操作,上、下位机基于自定义的通信协议通过RS-485互联,实现岩土工程多路数据采集系统。     

基于LabVIEW和DLL的USB2850采集卡DAQ系统设计

介绍了一种在LabVIEW平台下使用国产数据采集卡实现高速数据采集的可行方法。探讨了USB2850高速采集卡在复杂网络应用环境下,通过LabVIEW调用板卡的动态库（DLL）,实现上层数据的采集与分析过程的关键技术。实例中设计和实现了下位测控机进行数据采集后再通过以太网与上住处理机进行通信,同时上位处理机进行数据显示和分析,以及远程的Web测控应用。     

基于ARM与LabVIEW的智能健身系统

本文设计了出一个智能健身系统,本系统通过以S3C44B0X为核心的下位机实时跟踪运动中人体的生理参数变化,并把下位机采集到的数据通过USB接口传输到上位机,通过应用程序LabVIEW的虚拟控制面板进行显示并自动对健身仪的运动时间及强度进行调节,从而减少了运动损伤,达到了安全运动的目的.     

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.