基于物联网的智能家居综合系统设计

本文结合新一代信息技术物联网技术,设计了基于物联网的智能家居综合系统。该系统以STM32为核心处理器,采用ZigBee技术将家居环境参数和家用设备及安防系统联系起来,以实现数据的无线通信。可通过以太网实现家居环境远程监控：可利用GSM／GPRS通信技术实现用户的远程控制。测试结果表明该系统运行稳定、覆盖面广、测量准确、安装简单。     

基于物联网的智能家居综合系统设计

本文结合新一代信息技术物联网技术,设计了基于物联网的智能家居综合系统。该系统以STM32为核心处理器,采用ZigBee技术将家居环境参数和家用设备及安防系统联系起来,以实现数据的无线通信。可通过以太网实现家居环境远程监控;可利用GSM/GPRS通信技术实现用户的远程控制。测试结果表明该系统运行稳定、覆盖面广、测量准确、安装简单。     

基于物联网的智能家居控制系统设计与实现

采用GPRS和ZigBee技术实现物联网智能家居系统。该系统通过高性能处理和PAN Coordinator网络协调器,家电传感器构建ZigBee智能家居控制系统,并通过GPRS无线收发系统实现与远程手机终端通信。给出系统设计架构及软硬件实现方法,包括网络拓扑,关键处理流程等。通过实际测试验证该系统能够满足智能家居的远程监控需求,使整个系统真正脱离用户操作实现智能控制,降低信令交互。     

ZigBee身份识别技术在智能家居系统的应用

利用ZigBee的低速率、低功耗、低成本等特点,设计并制作了满足现场应用的身份识别卡。应用于ZigBee和GSM这两种网络相结合的智能家居系统中,实现了对家庭内部ZigBee设备的监控和管理。阐述了基于身份识别技术的智能家居系统的整体方案,并给出了详细的软硬件实现方法。该系统成本低廉、性能稳定、便于使用,具有很高的推广价值及应用前景。     

现代家居远程通信控制系统的研制

为提高家居安防等级,提出了一种双通道远程监控和报警的现代家居控制系统。利用ARM7作为信号控制和处理核心,通过GSM无线网络和Internet有线公共网络传输信息直达手机用户和计算机监控中心,实现家居的远程智能报警和遥控。该系统功能强大,性能可靠,为智能家居控制具有一定的借鉴意义。     

无线智能家居网络系统设计与应用

本文设计了一种以ZigBee和GSM/3G网络技术为核心的低功耗高性能的无线智能家居网络系统,并将其用于家居的环境监测、安防系统和家电的控制管理。该系统工作性能稳定,在数据采集和传输等方面达到了预期设计目标,尤其是在简化设备安装布线,提高系统移动性和便携性以及远程传输和应用管理方面效果十分显著。     

基于ZigBee的智能家居系统

在研究物联网应用的基础上,对智能家居系统进行了分析。提出了基于ZigBee系统的智能家居系统,并且开发了软硬件。整个网络构建呈星型拓扑结构,由中心节点担任数据处理节点,负责接受数据并传输给数据服务器,从而同Internet和GSM/CDMA网络通信。实现了环境参量与人体参量同远程终端的通信,以及远程终端对室内环境的远程控制。以其低功耗,近距离,低传输速率等优势更加适合智能家居的需要。     

基于LabVIEW的智能家居监控系统设计

信息技术的高速发展改变了人们的家居理念,建立一个高效、低成本的智能家居环境已成为人们关注的焦点。以图形化软件LabVIEW2012为开发平台,选用NIUSB．6009数据采集卡、SIM300GSM模块和USB摄像头,设计了一种智能家居监控系统。系统实现了对家居室内温度、湿度、光照度、燃气烟雾和安防状态等环境参数的实时监控及远程GSM短信息报警,该系统运行可靠,人机界面友好,易于操作,可扩展性强,且测试成本低。     

智能家居系统的应用研究

随着物联网技术不断深入研究,智能家居产品正日益开发且应用。目前较多的智能家居产品功能较单一,如单一的安防报警系统、厨房信息检测系统等。智能家居系统应包含有家电智能化、安防智能化、厨房及家居信息网络化等方面,且数据应和远程上位机通信使得住户可远程遥控家居设备。未来家居系统会走进普通百姓家庭中,使得人居生活舒适、安全、可控等。本文设计了基于CC2530节点的信息检测及家电控制终端,通过对ZigBee技术的组网研究,完成了系统MESH网络组建,且所有信息送Android智能平台。在平台上可控制所有终端节点的工作,同时平台通过WIFI或移动通信网络与远程上位机平台进行通信,实现远程遥控及监测功能。     

基于Android和ZigBee的智能家居系统设计

智能家居是目前物联网技术应用的重要领域,是以住宅为载体,利用Android、ZigBee以及嵌入式等技术,将与家居生活相关的各种家电、安防等设施集成,组成住宅设施管理系统,使家居生活更加智能化、人性化和节能化。本系统硬件部分以ZigBee家庭网络为主体,软件APP以Android为平台进行开发,用户通过系统可对住宅实现远程监控。     

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.     

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.     

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.     

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.     

Development of the readout system for waveguide multilayer optical card

Waveguide multilayer optical card （WMOC） is a novel storage device of three-dimensional optical information. An advanced readout system fitting for the WMOC is introduced in this paper. The hardware mainly consists of the light source for reading, WMOC, motorized stages addressing unit, microscope imaging unit, CCD detecting unit and PC controlling ＆ processing unit. The movement of the precision motorized stage is controlled by the computer through Visual Basic （VB） language in software. A control panel is also designed to get the layer address and the page address through which the position of the motorized stages can be changed. The WMOC readout system is easy to manage and the readout result is directly displayed on computer monitor.     

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.     

A method for calculating the center position of collimated light

It is a key problem to accurately calculate beam spots＇ center of measuring the warp by using a collimated laser. A new method, named double geometrical center method （DGCM）, is put forward for the first time. In this method, a plane wave perpendicularly irradiates an aperture stop, and a charge couple device （CCD） is employed to receive the diffraction-beam spots, then the geometrical centers of the fast and the second diffraction-beam spots are calculated respectively, and their mean value is regarded as the center of datum beam. In face of such adverse instances as laser intension distributing defectively, part of the image being saturated, this method can still work well. What＇s more, this method can detect whether an unacceptable error exits in the courses of image receiving, processing and calculating. The experimental results indicate the precision of this method is high.     

Collinear phase-matching study of terahertz-wave generation via difference frequency mixed in GaAs and Inp

The collinearly phase-matching condition of terahertz-wave generation via difference frequency mixed in GaAs and InP is theoretically studied. In collinear phase-matching, the optimum phase-matching wave hands of these two crystals are calculated. The optimum phase-matching wave bands in GaAs and lnP are 0.95-1.38μm and 0.7-0.96μm respectively. The influence of the wavelength choice of the pump wave on the coherent length in THz-wave tuning is also discussed. The influence of the temperature alteration on the phase-matching and the temperature tuning properties in GaAs crystal are calculated and analyzed. It can serve for the following experiments as a theoretical evidence and a reference as well.     

Effects of the alloy compositions on the phonon-polaritons in ternary mixed crystals

Composition dependence of bulk and surface phonon-polaritons in ternary mixed crystals are studied in the framework of the modified random-element-isodisplacement model and the Bom-Huang approximation. The numerical results for Several Ⅱ - Ⅵ and Ⅲ- Ⅴ compound systems are performed, and the polariton frequencies as functions of the compositions for ternary mixed crystals AlxGa1-xAs, GaPxAS1-x, ZnSxSe1-x, GaAsxSb1-x, GaxIn1-xP, and ZnxCd1-xS as examples are given and discussed. The results show that the dependence of the energies of two branches of bulk phonon-polaritons which have phonon-like characteristics, and surface phonon-polaritons on the compositions of ternary mixed crystals are nonlinear and different from those of the corresponding binary systems.