智能电视远程传感器控制的实现方法

主要介绍了一种在电视上加载虚拟传感器设备驱动的方法, 将具有传感器功能的手机、PAD等智能终端作为电视传感器输入终端, 在智能电视上实现利用传感器控制应用和游戏的解决方案. 具体实现方法为在智能电视上加载各种传感器如重力加速度(G-sensors)、线性加速度、陀螺仪等的虚拟设备驱动, 并提供上层传感器数据注入方法和应用层传感器数据获取通用接口; 智能传感器输入终端通过wifi与智能电视建立网络连接, 获取智能终端的传感器实际数据, 并将数据发送到电视端; 电视端接收到数据并注入到指定传感器设备, 最终由系统上报提供到应用层, 使得各类普通的传感器类应用和游戏在电视上展现. 可解决现在智能电视上应用和游戏单一的局面, 实现应用和游戏控制与画面相分开, 以获得更好的视觉效果并很好的与他人分享.     

基于移动感知的智能手机防盗软件的研究

得益于硬件技术的发展,智能手机感知信息的方式日益丰富。因而以智能手机自带的传感器件为出发点,以移动感知为基础,设计并开发了一款智能手机防盗软件。该软件针对智能手机在生活中的不同使用场景,利用手机自带的加速度传感器、环境光传感器、接近传感器以及手机内部的广播机制,通过分析从周围环境获取的实时数据来判断手机状态是否变化,从而实现不同的防盗模式。其中在通过加速度传感器输出值判断手机状态时,设计了三轴加速度从手机坐标系到参考坐标系的四元数转换算法,以利于客观统一地判断手机的运动状态。此外,通过手机内部短信广播的截获技术来判断设备是否收到短信以及短信内容是否为预设指令,实现对手机的远程控制。目前Android智能手机的市场占有率高达80%,因而以Android手机为例,实现了上述智能手机防盗软件。各项功能经过真机测试,均已达到预期效果。     

一种基于六姿态模型的加速度计校准方法研究

MEMS加速度计和陀螺仪是惯性导航系统的重要测量组件.为提高惯性导航系统的测量精度,在使用加速度计前需要对其各项参数进行标定.在构建了一种理想的三轴MEMS加速度传感器输出与重力加速度值、零偏、标度因子之间的模型基础上,根据加速度计在静止状态下重力加速度在各轴分量的模值与重力加速度的关系,提出了一种零偏和标度因子的六姿态校准方法,并建立了标定方程.以MPU6050加速度陀螺仪为例,通过实验验证了该方法的正确性.结果表明:通过该校准方法可以有效地提高加速度传感器的零偏和标度因子技术指标精度.     

基于角度补偿的手机多传感器数据融合测距算法

在惯性测量领域,单纯利用加速度二次积分的方法并不能准确感知目标对象移动的距离.加速度传感器在感知呈线性运动的目标对象时较为准确和实用,但在三维空间运动时它的坐标轴会随物体发生方向的改变而不断漂移.为解决该问题,提出了一种基于角度补偿的手机多传感器数据融合测距算法(ADC-R),使用加速度传感器测量物体运动的加速度,作为计算位移的原始数据;采用手机陀螺仪传感器测量运动物体的角速度,并以旋转矢量传感器输出的数据作为参数把手机动态坐标系下测得的加速度值空间坐标转换到静态的参考坐标系下,然后进行数据融合完成角度补偿计算;最后根据物理学加速度和位移的关系运用数学积分方法和进一步修正误差的技术得到最终移动的距离.实验结果表明此方法在近距离测距方面精度较高,优于加速度积分算法和加速度与陀螺仪融合算法.     

基于MEMS传感器的道面坡度提取方法

道面坡度测量对于精细化导航系统及场面运行模拟系统的开发具有重要的意义。采用微机械电子系统MEMS(Micro-Electro-Mechanical System)传感器进行加速度估计的方法提取道面坡度通常需要增加额外的传感器,同时还会受到累积误差的困扰。仅利用智能手机的传感器,通过零加速状态检测的方法对旋转四元数进行重置,实现了累积误差的修正,并提出了一种新的坡度提取方法,在不需要额外传感器提供辅助参数的情况下,利用重力加速度方向不变性,通过载体坐标系中的重力加速度矢量方向的变化间接地实现了道面坡度信息提取。实验结果表明,本文算法可以准确地提取道面坡度信息并实现对道面坡度信息的定位。     

中国微米纳米-----梳齿式加速度传感器敏感结构等效并联电阻对输出的影响分析

梳齿式加速度传感器敏感结构间感应电容的测量会受到结构间等效电路参数的影响。多层瓷片电容的结构与梳齿式加速度传感器敏感结构类似。本文类比多层瓷片电容中等效电路参数的研究,分析了梳齿式加速度传感器敏感结构间等效电路参数对感应电容测试结果产生的影响。     

传感器 智能手机的神经末梢

正传感器已经成为智能手机的标配,现在的手机上经常可以看到方向感应器、重力感应器、螺旋仪感应器、指纹传感器等各类传感器(图1)。它们就像分布在手机上的神经末梢,可以快速对手机状态的变化做出感应操作。知识扫扫盲——认识手机传感器手机传感器是可以对手机传输过来的特定状态变化进行感应的元件,这些状态可以是手机的方向、重心、位置、光线等常见元素(不同元素对应     

基于智能手机的老年人跌倒预警系统实现

设计实现了一个Android手机的App,为老年人跌倒提供实时检测,并在检测到跌倒发生时,及时发送报警短信到指定的手机.通过对从手机内置的加速度传感器和陀螺仪获取的数据求向量模,并将求得的向量模与实验测得的跌倒时的标准向量模进行比较,使用阈值算法来判断是否跌倒.判断发生跌倒时,使用百度提供的API进行定位.最终把跌倒的老年人位置信息和求救信号通过短信给指定监护人,以获得及时救助.     

梳齿式电容加速度传感器等效并联电阻对器件输出产生的影响

梳齿式电容加速度传感器检测电容的测量结果会受到除感应电容之外的其他等效电路参数的影响。梳齿式电容加速度传感器的结构与多层瓷片电容（MLCC）的结构类似,因此可以借鉴多层瓷片电容中等效电路参数的研究方法对电容加速度传感器中的等效电路参数进行研究。本文将对梳齿式电容加速度传感器检测结构中的等效电路参数进行建模,并分析这些等效电路参数对测试结果产生的影响。     

掌上影院的关键：迷你存储——金士顿推出1GB手机存储卡

2005年是MP4和各类多媒体播放器大红大紫的一年,手机更是加入了媒体播放设备的大家庭。由于手机体积更小,而且对耗电量的要求更为苛刻,因此许多存储卡都是专为手机而量身定做的。由于这些专用存储卡尺寸比普通存储卡更小,所以容量方面也一直相对落后,这造成手机的媒体播放能力受到限制。如今,金士顿新推出了1GB容量的 MMCmobile和miniSD存储卡,可以让很多     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.