手势切换音响系统的设计与实现

利用手势传感器和单片机技术,结合蓝牙技术,设计并实现了一个手势感应音响。通过感应手势的方向使播放器动作,包括播放/暂停/上一首/下一首/模式切换/电源开关等功能,另外还扩展了SD卡、蓝牙、USB 3种音频输入模式。     

基于图像处理的智能家居系统设计

人脸和手势识别是人工智能技术的一种，通过采集人脸和手势的图像信息，对图像信息进行扫描识别。近年来，随着信息技术快速发展，智能家居应用成为研究的热点。通过采用OpenCV计算机视觉库和LBP-HOG算法搭建具有人脸识别、手势识别、邮箱远程异常提醒等功能的智能家居系统。该系统通过摄像头对图像进行人脸识别判断，通过简单邮件传输协议（Simple Mail Transfer Protocol,SMTP）实现远程异常提醒功能。在此基础上，增加手势识别功能，实现多功能的智能家居应用。实验结果表明，所设计系统的人脸识别准确率达98%以上，手势识别准确率达90%以上，具有广阔的应用前景。     

基于移动互联的车联网监控调度系统架构的设计与实现

为了提高车辆的有效利用率和车辆运行的安全性以及处理突发事件的能力,加强对车辆和司机的管理,利用物联网感知技术和GPS技术,通过对车联网无线数据通讯的数据感知和采集,实现车联网监控调度系统架构.重点研究了车联网总体结构、车联网的关键技术、车联网监控调度系统功能结构的设计、监控调度系统的功能模块和物理结构.应用结果表明,该方案结合GPS/GIS定位,实现车辆的计算机智能调度,提高管理水平和效率.     

基于MATLAB的静态手势识别系统设计

随着人工智能的快速发展,人机交互的方式备受关注.手势识别作为新的人机交互的输入方式,在很多领域得到了广泛的应用.该文设计的是基于MATLAB的静态手势识别系统.首先,利用MATLAB强大的图像处理功能将图像灰度化和二值化,然后对手势图像进行分割并提取特征,最后实现静态手势识别.经过多次验证,该系统具有较高识别率.     

车联网移动无线数据通信系统的设计与实现

为了提高车联网移动无线数据通信能力,实现通过无线数据通信系统对车辆监控与导航,利用RFID和GPS技术,通过对车联网无线数据通信系统的结构分析,设计了车联网移动无线数据通信系统。重点研究了车载终端总体结构、车载终端通信模块、RFID感知通信模块、移动通信平台架构、定位追踪通信模块和远程控制通信模块。应用结果表明,该移动无线数据通信系统有较好显示能力和信息处理能力,能够处理导航、信息服务、车辆信息显示与辅助控制等功能的车载终端信息通信服务的需求。     

基于FPGA的PEX8311的LBS控制器的实现

通过对LBS控制器的控制信号、LBS总线读写操作时序、LBS状态机进行分析,设计并实现了一个高效、可靠的LBS控制器来实现FPGA和PEX8311的通信系统,在PEX8311和FPGA接口中运行状态正常,稳定性强,成功应用于某视频采集卡、某PCIe数据采集卡等,基于FPGA设计的LBS控制器具有灵活性强、可编程能力强、适应性强等优点。     

集成多路LED驱动，Silicon Labs接近感应器扩展多种应用

Si114x感应器集成了红外线非接触感应和环境光感应功能，不仅能实现对环境光的检测，同时还支持三个独立的LED驱动，在手机等应用中能实现手势感应和动作控制。     

基于位置服务实例的技术分析

LBS介绍 基于位置服务(Location Based Service),就是服务提供商为处于移动状态中客户提供的,基于该移动客户地理位置数据而开展的服务,这类服务一般都具备非常强的位置相关性,所以具有广阔的市场前景.据The Strategies Group研究报告(2002)显示,到2005年,全球将有超过6000万LBS用户,市值超过160亿美元.     

基于位置服务的标准化研究

LBS技术是基于位置的服务技术,它能够提供以电子地图、生活信息咨询、安全急救服务为主要内容的个人服务,以及以路径导航、远程跟踪、轨迹回放等为主要内容的企业服务,成为与人们生活息息相关的重要技术.从LBS系统的基本服务链出发,阐明了LBS系统的构成以及LBS业务的分类,具体分为移动定位技术体系、地理信息技术体系和LBS服务提供体系,详细介绍了LBS技术的业务标准.     

新一代(第四代)人机交互的概念框架特征及关键技术

人机交互是研究人与计算机之间通过相互理解的交流与通信,在最大程度上为人们完成信息管理,服务和处理等功能的一门技术科学.本文给出新一代(第四代)人机交互的概念框架和其四个标志性特征,即:(1)具有多模感知(听觉,视觉,手势,笔势等)功能的人机交互方式;(2)可进行基于Agent的听、视觉对话,作为人机交互的界面;(3)具有Internet数据仓库和基于内容检索的知识处理能力,作为人机交互内容;(4)可以在二维或虚拟的三维环境中实现人机通信,作为人机交互的环境.文中给出了解决和实现该四大特征的关键技术,描述了实验系统平台的全面功能,可以为同类研究人员作参考.     

Resolution Enhancement Technology:Integrated Process Solutions using OPC

DUV lithography, using the 248 nm wavelength, is a viable manufacturing option for devices with features at 130 nm and less. Given the low kl value of the lithography, integrated process development is a necessary method for achieving acceptable process latitude. The application of assist features for rule based OPC requires the simultaneous optimization of the mask, illumination optics and the resist.Described in this paper are the details involved in optimizing each of these aspects for line and space imaging.A reference pitch is first chosen to determine how the optics will be set. The ideal sigma setting is determined by a simple geometrically derived expression. The inner and outer machine settings are determined, in turn,with the simulation of a figure of merit. The maximum value of the response surface of this FOM occurs at the optimal sigma settings. Experimental confirmation of this is shown in the paper.Assist features are used to modify the aerial image of the more isolated images on the mask. The effect that the diffraction of the scattering bars (SBs) has on the image intensity distribution is explained. Rules for determining the size and placement of SBs are also given.Resist is optimized for use with off-axis illumination and assist features. A general explanation of the material' s effect is discussed along with the affect on the through-pitch bias. The paper culminates with the showing of the lithographic results from the fully optimized system.     

Cost-effective test solutions for smart card and other integrated flash applications

From its emergence in the late 1980s as a lower cost alternative to early EEPROM technologies, flash memory has evolved to higher densities and speedsand rapidly growing acceptance in mobile applications.In the process, flash memory devices have placed increased test requirements on manufacturers. Today, as flash device test grows in importance in China, manufacturers face growing pressure for reduced cost-oftest, increased throughput and greater return on investment for test equipment. At the same time, the move to integrated flash packages for contactless smart card applications adds a significant further challenge to manufacturers seeking rapid, low-cost test.     

Theoretical analysis of the relationship between the Brillouin gain coefficient and the strain in the optical-fiber sensors

The relation between the power of the Brillouin signal and the strain is one of the bases of the distributed fiber sensors of temperature and strain. The coefficient of the Bfillouin gain can be changed by the temperature and the strain that will affect the power of the Brillouin scattering. The relation between the change of the Brillouin gain coefficient and the strain is thought to be linear by many researchers. However, it is not always linear based on the theoretical analysis and numerical simulation. Therefore, errors will be caused if the relation between the change of the Brillouin gain coefficient and the strain is regarded as to be linear approximately for measuring the temperature and the strain. For this reason, the influence of the parameters on the Brillouin gain coefficient is proposed through theoretical analysis and numerical simulation.     

An improved parallel thinning algorithm with two subiterations

The parallel thinning algorithm with two subiterations is improved in this paper. By analyzing the notions of connected components and passes, a conclusion is drawn that the number of passes and the number of eight-connected components are equal. Then the expression of the number of eight-connected components is obtained which replaces the old one in the algorithm. And a reserving condition is proposed by experiments, which alleviates the excess deletion where a diagonal line and a beeline intersect. The experimental results demonstrate that the thinned curve is almost located in the middle of the original curve connectivelv with single pixel width and the processing speed is high.     

Novel fiber-optical interferometer with miniaturized probe for in-hole measurements

Today, micro-system technology and the development of new MEMS （Micro-Electro-Mechanical Systems） are emerging rapidly. In order for this development to become a success in the long run, measurement systems have to ensure product quality. Most often, MEMS have to be tested by means of functionality or destructive tests. One reason for this is that there are no suitable systems or sensing probes available which can be used for the measurement of quasi inaccessible features like small holes or cavities. We present a measurement system that could be used for these kinds of measurements. The system combines a fiber optical, miniaturized sensing probe with low-coherence interferometry, so that absolute distance measurements with nanometer accuracy are possible.     

Study of waveguide coupling efficiency in hybrid silicon lasers

This paper presents a new method to increase the waveguide coupling efficiency in hybrid silicon lasers. We find that the propagation constant of the InGaAsP emitting layer can be equal to that of the Si resonant layer through improving the design size of the InP waveguide. The coupling power achieves 42% of the total power in the hybrid lasers when the thickness of the bonding layer is 100 nm. Our result is very close to 50% of the total power reported by Intel when the thickness of the thin bonding layer is less than 5 nm. Therefore, our invariable coupling power technique is simpler than Intel＇s.     

Teleportation of an arbitrary unknown N-qubit entangled state under the controlling of M controllers

A new quantum protocol to teleport an arbitrary unknown N-qubit entangled state from a sender to a fixed receiver under M controllers(M < N) is proposed. The quantum resources required are M non-maximally entangled Greenberger-Home-Zeilinger (GHZ) state and N-M non-maximally entangled Einstein-Podolsky-Rosen (EPR) pairs. The sender performs N generalized Bell-state measurements on the 2N particles. Controllers take M single-particle measurement along x-axis, and the receiver needs to introduce one auxiliary two-level particle to extract quantum information probabilistically with the fidelity unit if controllers cooperate with it.     

Diode-end-pumped Nd:YVO4/LBO lasers with 4.2W continuous-wave output at 457 nm

A continuous-wave (CW) 457 nm blue laser operating at the power of 4.2 W is demonstrated by using a fiber coupled laser diode module pumped Nd: YVO4 and using LBO as the intra-cavity SHG crystal With the optimization of laser cavity and crystal parameters, the laser operates at a very high efficiency. When the pumping power is about 31 W, the output at 457nm reaches 4.2 W, and the optical to optical conversion efficiency is about 13.5% accordingly. The stability of the out putpower is better than 1.2% for 8 h continuously working.     

Call for Papers

正Wireless Body-area Networks The last decade has witnessed the convergence of three giant worlds:electronics,computer science and telecommunications.The next decade should follow this convergence in most of our activities with the generalization of sensor networks.In particular with the progress in medicine,people live longer and the aging of population will push the development of wireless personal networks     

Call for Papers—Feature Topic,Vol.12,No.7,2015

正Information Centric Networking Information-Centric Networking(ICN) is an emerging direction in Future Internet architecture research,gaining significant tractions among academia and industry.Aiming to replace the conventional host-to-host communication model by a data-centric model,ICN treats data content as the first