基于MCF52223USB数据采集系统的实时性研究

详细分析了基于USB传输的数据采集系统的实时特性。针对实时工业控制环境,研究了采用32位微处理器MCF52223进行AD采集,并通过USB总线通信方式向PC机传送AD数据的多路数据采集系统的实时特性,并从软件滤波、数据传输等方面提出了提高系统实时性的有效方法,最后较为具体地给出了MCU方和PC方的编程方法。     

USB在FPGA控制的高速数据采集系统中的应用

介绍了USB控制器CY7C68013的特性以及它在200M高速数据采集系统中的具体应用。该系统用来采集及处理激光雷达的回波信号，采用Xilinx公司的现场可编程门阵列（FPGA）为控制芯片，用Verilog语言自上而下进行FPGA设计以实现硬件控制功能，以USB为接口实现FPGA与PC机之间的高速数据传输。文中对USB模块进行了分析，详细介绍了PC端的固件设计、USB设备驱动程序设计以及应用程序设计．在信号的采集试验中USB能够快速可靠的传输数据，体现出较好的实用价值。     

四通道超声探伤卡的硬件设计

介绍了一种四通道超声探伤卡的硬件设计。该板卡采用FPGA作为超声信号数据采集的核心部件,采用高速单片机实现数字滤波卡内的控制,采集的数据通过USB接口向上位PC机传送,使得检测速度大大提高。该板卡可用于灵活组建各种多通道超声探伤设备。     

基于FPGA的数据采集系统的设计

介绍了一种用于汽车姿态测量的数据采集系统的设计,该系统基于FPGA+USB架构,采用FPGA控制整个系统的采集时序,USB芯片作为数据采集通道,上位机完成姿态解算和数据显示功能.     

基于FPGA和线阵CCD的高速图像采集系统

针对很多领域对被测物图像采集的高速和实时性要求,文中利用可编程的FPGA和线阵CCD技术,介绍了一种高速图像数据采集与传输系统的设计。该系统选用线阵CCD作为前端信号采集,采用FPGA产生与控制整个系统的时序,通过USB接口将采集到的数据传给PC机做进一步处理。本系统可在色选机中用于运动目标图像数据的采集,由于采用了高速且具有高度并行性的FPGA技术,在图像数据的高速实时采集和处理上较其他系统具有很大优势,且设计灵活,配合线阵CCD的运用,可有效提高精度、降低成本,对图像采集在其他方面的应用具有参考价值。     

基于 FPGA 和线阵 CCD 的高速图像采集系统

针对很多领域对被测物图像采集的高速和实时性要求,文中利用可编程的 FPGA 和线阵 CCD 技术,介绍了一种高速图像数据采集与传输系统的设计.该系统选用线阵 CCD 作为前端信号采集,采用 FPGA 产生与控制整个系统的时序,通过 USB 接口将采集到的数据传给 PC 机做进一步处理.本系统可在色选机中用于运动目标图像数据的采集,由于采用了高速且具有高度并行性的 FPGA 技术,在图像数据的高速实时采集和处理上较其他系统具有很大优势,且设计灵活,配合线阵 CCD 的运用,可有效提高精度、降低成本,对图像采集在其他方面的应用具有参考价值     

新型存储控制器的研究设计

随着存储器的不断发展及系统功能的不断增强，系统对存储控制器提出了更高的要求。为此，需要开发成本低、效率高、应用广泛的新型存储器控制器。本新型存储控制器是基于FPGA的设计方案采用自顶向下（TOP-DOWN）的设计思想，遵循FPGA的设计流程实现的。新型存储控制器设计了3类接口：存储器接口、MPU／MCU接口、USB接口。存储控制器通过存储器接口来控制存储器；MPU／MCU接口可以控制存储器接口和存储控制器的状态；USB接口可以连接PC和带有USB接口的设备。此新型存储控制器可用于工业、PC、数字设备、信息家电等多个领域，有广泛的技术性和实用性。     

借助USB完成FPGA配置的实现方法

引言 由于FPGA具有易失性,所以每次FPGA上电都必须将其设计代码重新装载,这一任务常常由某种专门针对FPGA配置的专用存储器（如EPC系列专用存储器）或专用处理器来完成。针对USB接口设备上FPGA的配置方法问题,本提出利用PC主机,通过USB接口在线对USB设备中FPGA芯片进行配置的一种实现方法。具体方法是将FPGA的配置代码存储于PC机中,PC机通过USB将配置件传送给USB设备,USB设备再借助其内部的微控制器将配置代码装载到FPGA芯片,实现FPGA的配置过程,从而能够免去在系统设计中使用一个专用处理器或专用存储器所造成的占用空间和成本的增加。     

基于USB总线的FPGA与PC机接口通信的实现

本文介绍了通过USB接口实现的FPGA与PC机间的通信。包括FPGA及USB接口控制芯片的硬、软件设计．阐述了FPGA与PC机通信的整个系统设计与实现方法。     

FPGA和USB的双通道数据采集测试系统

提出了一种双通道数据采集测试系统的硬件实现方案。该系统采用FPGA芯片EP1C12Q240C6,SRAM芯片CY7C1061AV33和USB芯片CY7C68013A构成硬件框架,可通过USB总线接收上位机命令并上传采集的数据到PC。本文对该系统的硬件电路和FPGA内部逻辑设计做了详细的介绍。最后经过实际测试,该系统可以有效采集ADC输出信号,验证了设计方案的正确性。     

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     

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.     

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。