NI FP-2010与DSP串口通讯的研究

介绍了用NI FP-2010网络控制器模块与TI LF2407A数字处理器芯片(DSP)进行串口通讯的方法。主要是为了应用DSP处理器芯片的CAN模块来监测并接收CAN总线上的CAN信号,然后用DSP芯片上的SCI模块把接收到的CAN信号通过串口传送给NI FP-2010网络控制器模块的串口,实现下位机独立采集CAN信号的功能。LabView7.1作为FP-2010端的程序开发平台,用LabView开发的串口接收程序在FP-2010的实时模块中运行,实时接收DSP通过串口发送的数据,详细介绍了LabView串口通讯软件的设计方案。     

TMS320F2812内嵌eCAN模块的CAN总线通信

讨论一种基于DSP内嵌CAN控制器的CAN总线通信方式；介绍TI公司新推出的DSP芯片TMS320F2812内嵌的CAN控制器eCAN(增强型控制器局域网)模块的特点；通过与TI公司先前推出的DSP内嵌的CAN控制器比较，描述其优越性，并讨论其程序设计的思路和方法。     

汽车总线数据采集模块设计

为了对汽车内部的总线数据传输进行有效的测试和监控,设计了基于微控制器PIC16F877和CAN控制器MCP2510的汽车CAN总线和LIN总线的数据采集模块,该模块接收CAN总线和LIN总线上的数据,经过缓冲后,转化为串口数据发送到计算机,通过计算机上的虚拟仪器软件接收并加以处理,讨论了数据采集模块在与PC的通讯过程中串口失效问题,分析了失效问题的原因,给出了具体传输方案,该方案成功解决了串口可靠性和通讯速率之间的矛盾,对其它串口设备与PC的通讯,也具有很好的借鉴作用.     

基于DM642 DSP的网络化数据采集与编程实现

随着数字信号处理器性能的不断提高和网络技术的飞速发展,将采集到的数据通过网络实时传递给需要的用户已成为可能。提出了一种基于DSP的网络化数据采集系统设计方案。利用DM642芯片的多通道缓冲串口（McBSP）和EDMA控制器实现数据采集和搬移,为保证采集数据的完整,EDMA通道采用ping—pong缓冲技术以实现不间断地接收数据源的输出信号。基于实时性考虑,本系统采用UDP数据报传输协议,将数据通过EMAC和RJ-45端口发送至网络。这种方式实现简单、干扰少、传输距离可扩展,可使网络中的用户实时共享采集到的数据。     

基于DM642 DSP的网络化数据采集与编程实现

随着数字信号处理器性能的不断提高和网络技术的飞速发展,将采集到的数据通过网络实时传递给需要的用户已成为可能.提出了一种基于DSP的网络化数据采集系统设计方案.利用DM642芯片的多通道缓冲串口(MxbSP)和EDMA控制器实现数据采集和搬移,为保证采集数据的完整,EDMA通道采用ping-pong缓冲技术以实现不间断地接收数据源的输出信号.基于实时性考虑,本系统采用UDP数据报传输协议,将数据通过EMAC和RJ-45端口发送至网络.这种方式实现简单、干扰少、传输距离可扩展,可使网络中的用户实时共享采集到的数据.     

种微控制器在CAN-USB转换中的设计

为了解决当前市场中昂贵的CAN—USB转换模块,提出了一种简单灵活且成本较低的基于Freescalel6位微控制器MC9S12XS128在CAN-USB转换模块中的设计方法,以解决CAN总线与PC主机的通讯问题;文章详细介绍了软硬件设计思路及流程,试验中设置CAN控制器为环路自检模式,串口波特率设置为9600,数据位设为8位,按照主程序设计流程,串口先接收8字节的0x88以确认串口的正确性,再接收8字节的CAN数据帧0x00~0x07;在测试期间CAN-USB模块累计运行10小时。试验证明该模块能完全满足CAN转USB的通讯需求,工作稳定可靠,简单易操作,实用性好。     

基于ADS8364的数据采集系统设计

开发了基于DSP和ADS8364的数据采集处理系统。该系统主要由信号调理模块、A/D转换模块、DSP处理器模块、CPLD逻辑控制模块、Flash存储器模块和CAN总线通信模块组成。它能够在板卡上实现信号的采集、前端处理和存储,并能通过CAN总线与上位机通信,实现数据的存储、后端处理及在PC104上显示。     

一种微控制器在CAN-USB转换中的设计

为了解决当前市场中昂贵的CAN-USB转换模块,提出了一种简单灵活且成本较低的基于Freescale16位微控制器MC9S12XS128在CAN-USB转换模块中的设计方法,以解决CAN总线与PC主机的通讯问题；文章详细介绍了软硬件设计思路及流程,试验中设置CAN控制器为环路自检模式,串口波特率设置为9600,数据位设为8位,按照主程序设计流程,串口先接收8字节的0x88以确认串口的正确性,再接收8字节的CAN数据帧0x00~0x07；在测试期间CAN-USB模块累计运行10小时,试验证明该模块能完全满足CAN转USB的通讯需求,工作稳定可靠,简单易操作,实用性好。     

计算机串口与GSM手机通讯的研究与实现

文章对基于计算机串口的GSM短信通讯系统进行研究,实现在计算机上通过串口连接GSM模块并使用GSM网络与远端的手机进行通讯。设计中采用C#程序开发语言和运用计算机串口通讯技术,实现计算机通过串口对GSM模块(TC35)进行控制,并解决了PDU编码解码、AT指令控制TC35、以及软件界面的设计等问题,最终完成计算机终端实时与TC35模块通讯,实现短信息服务。研究表明,通过拓展计算机串口与GSM模块的应用可以建立各种远程控制,达到较好的远程控制效果。     

基于FPGA的智能PMC通讯模块设计

为了灵活在工业控制计算机内实现通讯接口的扩展,提出了一种基于FPGA的智能PMC通讯模块的设计方法,该方法包括了通讯接口模块的主要设计思路与实现过程;通讯接口模块以FPGA为核心,在FPGA内部实现了软核处理器、PCI总线接口、CAN协议控制器、串行协议控制器、寄存器组等功能,使电路的设计高度集成化,也提高了整个设计的可靠性,同时通过处理器软核实现通讯的智能控制,使模块具备稳定的数据传输速率;模块设计完成后,在实验室环境下对串口和两路CAN总线接口进行连续运行测试,在测试过程中模块性能稳定,无误码和丢帧现象。     

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。     

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。