基于虚拟仪器技术的六分力测试系统设计

为解决目前犁体外载的测定装置普遍存在数据采集精度不高和数据记录方法落后等问题,利用虚拟仪器技术开发六分力测试系统,实现了犁体外载的多参数实时数据采集、处理、显示、保存及控制等功能。基于LabVIEW图形化编程软件,研究并开发了数据采集处理系统,设计测试与控制过程的虚拟前面板并得出数据分析结果。虚拟仪器在犁体外载六分力测试上的开发应用,有效提高了试验过程的自动化和智能化水平及测试数据效率和精度。     

基于FPGA的多通道多量程数据采集系统设计

为了实现多路模拟信号的准确采集、记录和显示,设计了一种基于FPGA的多通道、多量程数据采集系统。该系统采用FPGA作为主控芯片,通过FPGA内部的控制模块控制A/D数据转换和UART接口数据传输,并在FPGA内部完成数据处理。FPGA与上位机之间采用RS-232串口实现数据通信,上位机采用Viusal Basic编写监控界面,实现远程控制和显示。该系统具有性能稳定、实时性强、操作界面友好、可扩展性强等特点。     

交换芯片在智能电网录波及网络记录装置中的应用

智能变电站改变了数据采集的方式,一次设备集成的采集器负责数据采样,然后通过光以太网将采样数据以网络报文的形式发送给二次设备。介绍采用以太网交换芯片扩展网络接口在录波和网络记录装置数据采集中的应用研究,介绍实践中遇到的问题及解决方法,并分析存在的问题和其适用的范围。     

XXX爆炸威力场远距离多参数数据采集系统

针对当前爆炸场测量中存在测试系统布设不便、存储测试系统数据需要回收的问题,综合运用数据采集技术、存储测试技术与无线和光纤通信技术,设计了一种用于爆炸场的远距离多参数数据采集系统。该系统是用来测试XXX爆炸威力场中压力、振动加速度、温度和爆炸时刻的多参数数据专用系统。该系统主要由ZigBee和光纤模块对多个传感器节点进行参数设置(量程设置、采样频率设置、触发电平设置等),使用FPGA和AVR单片机为主控芯片,解决了特殊环境中多通道变参数数据采集问题。实际测试表明:这种新型测试系统可以得到爆炸场中多个参数的变化曲线,具有可无线遥控、微功耗、抗高冲击、抗干扰、工作稳定可靠等特点,适于恶劣环境下数据记录和传输。     

一种新型即插即用智能记录仪的研究与设计

本文以通用串行总线为设计基础,分析并讨论了USB的体系结构、通信协议等核心技术。针对汽车运行参数现场实时数据采集与记录,利用基于接口层的USB主控制器协议,设计出汽车运行参数采集装置,结合自主开发的专用数据通信驱动程序和应用程序,实现了一种便于监控管理、操作简易、通用性强的智能记录仪表的设计。     

以太网的远程控制信号调理系统

引言 在许多物理实验（核聚变实验装置托卡马克的放电实验）的数据采集过程中，由于待测信号微弱且测试环境电磁辐射严重等因素，在数据采集前端往往需要对信号进行滤波和放大等信号调理操作，以滤除信号噪声并将待测信号调整到后端数据采集卡的最佳量程范围，最终提高整个数据采集系统的分辨率。     

基于ARM的智能瓦斯监测系统研究

针对矿井瓦斯事故频发及瓦斯监测有线通信急需向无线通信改进的实际情况,设计了一种基于ARM微处理器的瓦斯监测系统。该系统由多个瓦斯浓度数据采集装置及智能分析装置组成;通过无线射频芯片实现采集装置和分析装置问数据的无线传输。详细介绍整个监测系统原理及设计方法,并对关键电路进行了分析,给出了关键单元的软硬件设计。     

96／98型多功能智能电测仪的设计

提出一种以单片机ＭＣＳ９６／９８作为智能核心的新型多功能智能测试仪器。文中介绍了其主要设计原理、高速数据采集、信号处理和自动量程等创新设计技术。     

基于PCI总线的多功能可定制数据采集系统

为满足航空电子总线数据采集系统的通用性和多功能性,设计了基于PCI总线的多功能可定制数据采集系统;研究了相关总线板卡的驱动函数;采用自顶向下和模块化的方法设计了数据采集系统的系统运行管理模块、数据采集显示模块、数据分析处理模块和记录数据管理模块;使用了多线程、多视图、双缓存和Teechart控件等关键技术.设计实现的数...     

关于多通道分组切换装置的设计

数据采集是数据处理的必要组成部分,而在采集大规模多路信号中,某些采集多路信号的数据采集板卡或模块价格昂贵,难以购买多块这样的板卡或模块以满足多通道数据采集的需要;这时,如果数据采集实时性、同步性要求不高,可以使用一个多通道分组切换装置,使多通道共用一块采集板卡或模块以节省成本;提出了多通道分组切换装置的设计方法,并给出了实际实现的实例,从硬件和软件两方面给出了实例的说明,实例装置的实际应用获得了成功,显示了分组切换方法的可行性。     

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     

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。