基于MSP430的新一代差阻式读数仪的设计与实现

新一代低功耗多功能差阻式读数仪是基于16单片机MSP430F5436为处理器的低功耗装置.该文详细介绍了其硬件的结构和组成,分别从电源系统、数据采集、雷电预警、无线Zigbee模块等部分阐述了其特点,以及在人机接口的友善型,系统优良的精确性等多方面所具备的优势.新一代读数仪已经在实际工程中得到了成功的应用,其稳定性和精确性为大坝监控系统提供了实时数据.     

吉勒布拉克堆石坝施工期内部沉降分析

混凝土面板堆石坝施工期的内部沉降观测可通过水管式沉降仪来实现，实时观测数据可用来指导大坝的施工进度和质量控制。以新疆吉勒布拉克水电站混凝土面板拦河大坝为例，介绍水管式沉降仪沉降测点的布置情况，阐述测点基准值的选择及技术指标的要求，根据观测数据，从相同高程处、同一观测断面处、不同沉降时间等几方面分析沉降规律，进行误差分析，并与国内外其他工程进行比较；分析统计结果说明，堆石坝施工期的内部沉降符合一般规律。     

吉勒布拉克堆石坝施工期内部沉降分析

混凝土面板堆石坝施工期的内部沉降观测可通过水管式沉降仪来实现,实时观测数据可用来指导大坝的施工进度和质量控制。以新疆吉勒布拉克水电站混凝土面板拦河大坝为例,介绍水管式沉降仪沉降测点的布置情况,阐述测点基准值的选择及技术指标的要求,根据观测数据,从相同高程处、同一观测断面处、不同沉降时间等几方面分析沉降规律,进行误差分析,并与国内外其他工程进行比较,分析统计结果说明,堆石坝施工期的内部沉降符合一般规律。     

基于Wi-Fi的智能传感器设计

随着物联网的发展,对传感器的智能性和低功耗要求越来越高。基于此,以超低功耗片上系统GS1011为控制核心,设计了一种基于Wi-Fi的新型智能传感器系统。硬件由传感器、信号调理、采样存储、处理发送4个独立模块组成并采用超低功耗芯片和乒乓式存储结构,以节省系统能量;软件上,开发了基于Green Hills操作系统的智能传感器应用程序。实验结果表明所设计的智能传感器无线通信性能好、稳定性强。     

温湿度及加速度信号在线监测低功耗无线传感系统设计

提出一种用于在线监测工业设备自身振动信号和工作环境温湿度的低功耗无线传感器的模块化设计方法。该无线传感系统采用低功耗单片机MSP430F5438作为核心控制单元,由振动加速度检测模块、温湿度模块、射频通信模块、串口通信模块及供能模块构成。主要研究了采用高集成单元器件以低功耗运行的工作方式,实现振动信号和工作环境温湿度参数监测的设计方法,以及使监测系统满足低功耗和性能监测要求的系统的各个模块的工作模式（包括时序）和电源管理模式。使监测节点在满足在线完成实时监测以及信号传输等性能要求的基础上,降低系统功耗延长系统节点采用电池供电的寿命要求。     

基于MSP430F149的冰川参数采集系统

介绍了一种新型低功耗、高稳定性的冰川参数采集系统.系统以低功耗单片机MSP430F149为主控制器,集成高精度低功耗温湿度传感器SHT21、超声波传感器US-100、GPS,高精度实时时钟芯片PCF8563、EEPROM、SD卡、Zig Bee无线传感器网络(WSNs)和电源管理等模块,采用定时低功耗工作模式,实现了冰川温度与湿度、冰川地理坐标、雪高度等参数的自动测量和存储,并将所测的数据通过ZigBee WSNs传输到数据处理中心.     

低功耗电梯呼叫系统的设计与实现

针对传统电梯电话呼叫系统存在的布线复杂和维修不便等问题,设计了一种采用MSP430为控制核心,nRF24L01为无线收发模块核心芯片,并配以相应的输入模块和报警显示模块的低功耗电梯无线呼叫系统设计方案。系统是由若干个发送端和一个接收端组成的多对一的无线呼叫系统。经过实测表明,系统具有稳定性高、功耗低和高抗干扰性等优点,能有效地应用于各种电梯中。     

基于MSP430的航标监控终端的实现

以辅航设备控制监测系统改进项目为背景,从航标监控系统RTU总体设计的角度出发,介绍了在航标监控管理系统中,以TI公司的MSP430低功耗芯片为核心的数据采集处理器,阐述了时间片工作方式结合MSP430芯片低功耗模式的设计,并在系统整体设计上采用电源管理模块化,使终端灵活分配电源的供应,以达到最小低功耗,设计出满足低功耗、无线监测、航道设备运行环境等功能的低功耗航标智能监控终端,测试结果表明,该监控终端具有良好的可靠性、实时性、稳定性和低功耗性.     

基于GSM的MSP430采集传输控制系统设计

设计了一套多功能、低功耗的数据采集传输控制系统,系统以MSP430F149为核心,扩展了GSM模块、数据存储、串口通信、传感器及步进电机控制模块,实现了对远程设备的监测与控制,并将其用于某无人值守设备中.     

TMS320VC5509A USB设备固件设计与实现

TMS320VC5509A是TI推出的新一代高性能、低功耗数字信号处理芯片,并扩充了当今流行的USB设备接口模块.本文介绍了嵌入式系统USB接口的特点和主要软件模块,分析了TMS320VC5509A USB接口模块的结构,给出了USB设备固件的设计和实现方案.该方案层次清晰,可移植性强,具有广泛的适用性.     

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。