基于UHF RFID技术的无线脉搏血氧监测系统设计

针对我国人口老龄化和医疗资源紧张问题,设计了一种基于900MHz UHF RFID技术的无线脉搏血氧传感系统.系统整体构架由光电传感器、微处理器、RFID标签、RFID阅读器和上位机组成.光电传感器和微处理器实时采集和处理脉搏血氧信号,RFID标签和阅读器实现数据无线通信,最终通过上位机完成数据收集和界面显示.实验结果表明:所设计系统与临床用血氧检测仪具有良好的一致性,且具有无线传输和低功耗的特点,为无线生物传感芯片的设计开发提供了参考.     

基于无线传输技术的人体脉搏采集分析系统

设计了一种人体脉搏无线检测系统,该系统实现了人体脉搏的采集,滤波,无线传输等功能.信号采集硬件以MSP430单片机为控制核心,采集脉搏数据经过滤波、A/D转换,通过无线传输模块传入计算机.上位机软件利用虚拟仪器技术编程,实现了实时数据的采集、存储和波形显示.通过计算机对脉搏信号进行特征提取、分析和初步健康诊断.系统拥有便携、低功耗、成本低的特点,既可用于脉搏信号研究也可用于临床和家庭保健中的脉搏检测.     

无线可穿戴柔性脉搏检测系统设计

针对日常健康监护领域对检测系统高效、轻便应用的需求,设计出一种无线可穿戴柔性脉搏检测系统.系统以可穿戴脉搏传感器和无线蓝牙传输芯片NRF51822为核心,以柔性印刷电子技术为桥梁,实现对人体脉搏波信号的采集、处理,并能通过无线蓝牙传输的方式将所检测到的脉搏信号传输至智能手机终端,在应用程序界面实时显示脉搏波形信息.创新...     

养殖场水质参数采集器的设计

水产养殖场水质参数的在线采集、处理与传输是实施科学养殖的关键环节。本方案采用无线传感技术,能实时对养殖水域的水质进行全天候检测,数据无线传输,水质参数采集器用蓄电池加太阳能电池供电,检测过程可以做到无人职守。     

应用于纳型无人机视觉场景数据集构建的图像采集系统

纳型无人机具有体积小、功耗低的优势,在物联网、智能感知等领域中有重要的应用前景;对于纳型无人机的机载目标检测和目标跟踪等任务,视觉场景数据集对于机载算法的训练具有重要作用;由于受到体积和功耗等因素的限制,使用无人机机载的视觉系统进行场景数据的采集存在传输帧率慢、传输中需要进行数据压缩等问题,进而导致构建的数据集与机载算法处理的实际图像不匹配;因此,为了构建一个高质量的数据集,该图像采集系统以匹配纳型无人机视觉场景数据为目的进行设计,系统通过低功耗图像传感器HM01B0制作的模组获取图像数据,通过ZYNQ的PL单元完成图像数据的处理和图像传感器的控制,PS单元完成图像数据存储和各任务间的调度;实验结果表明,该图像采集系统最高可以达到320*320分辨率下45帧/s的采集速率,与纳型无人机机载视觉系统图像获取速率相匹配,同时采集的图像质量清晰,能够满足纳型无人机视觉场景数据集构建的需求。     

基于ZigBee的煤矿数据采集系统设计与实现

本文以MSP430F2618和CC2520为核心设计了低功耗的无线数据采集系统,给出了基于ZigBee的无线数据采集系统的组成。通过使用CC2520芯片完成了采集节点,主控单元的硬件与软件设计,实现了数据的采集和无线传输。     

基于Arduino和LabVIEW的脉搏心率检测仪

针对目前心血管疾病严重威胁人类健康,且在我国的发病率与死亡率居高不下的现状,设计了基于Arduino和Lab VIEW的脉搏心率检测仪。下位机选用Arduino为主控芯片,将脉搏心率检测模块检测到的脉搏信息通过串口发送给Lab VIEW上位机,上位机对接收到的数据进行处理并显示动态脉搏曲线,同时将脉搏测量结果显示在上位机前面板。该检测仪可实现对脉搏和心率信号的采集、显示、波形回放和存储,与物联网技术结合可以实现远程监测。测试结果表明,该检测仪测量误差不超过1%,利用该仪器可及时了解被测者的身体状况。     

便携式数据采集控制系统的设计与实现

利用传感器无线数据采集卡监测突发灾害,需要主控设备及时做出回应监测相应数据;传统的数据采集控制设备占用空间大、传输速率慢,可移动性差;通过分析这些缺点,设计了一种基于WiFi无线网络技术的便携式的无线数据采集控制系统;整个系统包括数据采集单元、数据传输单元和数据控制单元3大部分;该数据采集控制系统能够在WiFi网络覆盖区域内,以手持Android小型终端为控制终端,以无线网络为传输通道,实时控制数据采集卡,并读取采集数据,即时数据可帮助用户更加可靠地分析实际情况,具有实际应用价值。     

基于拓扑层级关系结构的便携式低压智能检测仪设计

针对传统智能检测仪灵活性差、灵敏度较低的问题,基于低压台区拓扑层级结构进行智能检测仪的设计,对低压台区拓扑关系进行星型拓扑改造,使低压台区结构更加简洁,数据完成互通;将智能检测仪管理模块进行集成化设计,使仪表检测数据控制力度更强;采用TMS320芯片加强检测仪数据处理速度,同时将检测仪功能模块集成化处理,缩小检测仪体积;利用多层级拓扑优化算法对检测仪采集数据分层次划分,并分析检测数据与时间周期的关系,从而完成条理化处理,最后通过测试网点对测量误差进行分析,发现该设计最大误差为0.9％,最小误差为0.2％;通过仿真实验发现该设计灵敏度最大,最高达到96％;通过对比实验发现该设计模型强控比率最大为0.8,控制时间为30 s;从而验证了该设计方法的优越性,证实了该研究的可行性.     

基于ZigBee的特种装备贮运状态监测系统设计

设计了一种基于ZigBee技术的实时贮运状态监测系统。系统通过MEMS传感器实现特种装备贮运状态的采集,采用CC2530模块实现数据的无线传输,以ARM微处理器STM32F407为核心实现数据的实时存储、分析与显示,并应用数字滤波算法对数据进行滤波处理,提高了检测数据的精确度。系统测试结果表明该系统对于节点信息的采集和无线传输具有较高的可靠性和稳定性,具有推广应用价值。     

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。