ARM手持式仪器核心模块的设计与实现

介绍了基于ARM嵌入式系统的手持式仪器核心模块硬件、软件的设计与实现.由嵌入式CPU(S3C44B0XX)、SDRAM(HY57V641620HG)和Flash(28F320C3BA100)构成手持式仪器基本系统;由16位Σ-ΔA/D转换器AD7706作为主要测量部件;用160×160像素LCD图形显示器和CH452键盘电路实现人机对话;用专用电源芯片设计6路低功耗、高可靠电源;并为核心模块设计了通用功能函数.该模块的硬件软件具有通用性,现已用于手持式智能亮度计中.     

基于CC1101的无线压力检测系统的设计

数据采集模块的设计以实现低功耗和高压力检测精度为目标,选用内部自带24位Δ-Σ型ADC模块(SD_24A)的16位低功耗微处理器MSP430AFE231为控制核心。数据采集模块设计了电源低功耗管理、单电源信号放大和调理电路、单电源低通滤波电路。以TI公司的低功耗Sub-GHz RF收发器CC1101为核心,设计了应用于433MHz的CC1101无线数据传输模块。以TI公司的16位微处理器MSP430F122为核心,设计了数据通信模块,实现了多个数据采集模块与上位机的通讯。     

水质参数监测系统设计与实现

为了实现水质参数的远程监控,提出了一种基于MSP430和GPRS的水质参数监测系统设计方案--以MSP430F149单片机为核心,由水质参数检测模块,语音报警模块、数据储存模块、时钟模块、人机通信模块、GPRS通信模块和上位机软件平台组成,并给出了系统的构成及主要设计,实现了水质参数的检测及传输.     

基于MSP430AFE231系统数据采集模块的硬件设计

以16位的微控制器MSP430AFE221为控制核心;设计单电源供电的信号放大电路和低通滤波电路,对压力传感器输出信号进行处理;通过MSP430AFE221内部24位ADC模块(SD_24A)进行模数转换;设计电源电路,应用于低功耗情况.设计与CC1101无线数据传输模块连接的接口电路.     

嵌入式宽带可视电话系统设计及实现

设计及实现了一款基于美国德州仪器公司（TI）TMS320DM6446平台的嵌入式宽带可视电话系统。该嵌入式宽带可视电话系统以TMS320DM6446处理器为核心,提高了可扩展性和平台独立性,通过MSP430子系统等解决了处理器I／O资源有限和降低了对外围低速模块实时控制的复杂度,通过myOPAL的实现提高了本系统的性能和并发处理能力,降低了延时等,实现了视音频双向实时通信。     

嵌入式宽带可视电话系统设计及实现

设计及实现了一款基于美国德州仪器公司(TI)TMS320DM6446平台的嵌入式宽带可视电话系统.该嵌入式宽带可视电话系统以TMS320DM6446处理器为核心,提高了可扩展性和平台独立性,通过MSP430子系统等解决了处理器I/O资源有限和降低了对外围低速模块实时控制的复杂度,通过myOPAL的实现提高了本系统的性能和并发处理能力,降低了延时等,实现了视音频双向实时通信.     

基于MSP430单片机的电源评估系统的设计

本文应用MSP430单片机设计的电源评估系统,用于评估系统外部电源发生变化时(6-15V)对信号采集电路产生的影响。主要包括电源评估系统的基本设计思路和硬件电路设计。系统硬件部分主要由电源部分、MSP430F5438单片机控制部分和信号采集部分等组成。本文详细的论述了硬件设计部分实现方式及工作原理,并给出该部分的电路原理图。     

基于MSP430F449的低功耗电量测量仪的设计

文章介绍了一种基于MSP430F449的手持式低功耗电量测量仪的设计,详细介绍了该测量仪的硬件和软件实现,以及为降低功耗所采取的措施。该电量测量仪对于低功耗便携式仪器的设计具有一定的参考意义。     

CSR真空系统的连锁保护与控制实现

采用了当前先进的嵌入式芯片技术,介绍了一种基于微控制器MSP430F149的控制模块。并基于工程实际,着重介绍了模块的设计思想、实现的功能、硬件电路的设计、软件的设计。模块的控制核心为微控制器,使用C430语言编程。该模块具有适应性与灵活性强、精度高、使用方便等优点,现已成功应用于CSR真空连锁保护控制系统中,该模块对其他领域的控制也有较大的参考价值。     

智能路灯控制设计

本设计以TI公司的MSP430F2274单片机为核心组建了一个智能路灯控制系统。该系统由核心控制模块、键盘和显示模块、信号检测模块、LED恒流驱动电源模块、报警模块组成;实现了人机交互、开关灯的时间设定、LED灯随交通情况的自动调节、独立控制LED开和关的时间、报警功能以及LED灯的调光功能。     

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。