漏电限流保护安全插座

本文是笔者根据多年的从业需要,设计一款安全插座,通过实时调节插座的用电量,实现插座的短路、过载和漏电等用电安全保护。     

基于电气安全技术的电气工程智能监控系统设计研究

随着科学技术的不断进步与发展,对以电气安全技术为基础的电气工程智能监控系统设计也提出了更多的要求。尤其针对近年来电气安全事故的频频发生,社会经济与人民生命财产安全受到很大威胁,这就要求在电气智能监控系统设计方面不断完善。文章主要对电气安全的基本概述、安全事故分析以及电气工程智能监控系统设计进行探析。     

基于物联网的医疗设备电气安全监控系统分析

要想提高医疗设备电气安全管理的智能化水平,就必须重视合理利用物联网,构建一套新的监控系统.医疗设备电气安全监控系统的构建,需以各项参数的综合分析为基础,其中,要将接地电阻作为重要考虑对象,以无线网以及监控软件为切入点,合理设计电阻监测系统.本文对基于物联网的医疗设备电气安全监控系统进行了简要分析.     

施耐德电气浪涌保护插座带来安全便捷新体验

近日，全球领先的关键电源与制冷服务商施耐德电气旗下的APC首次推出带有可插拔USB充电模块的两款创新型浪涌保护插座P6U-CN和P10U-CN，为家用和商用环境的电气电子设备创造安全洁净的电源环境。     

基于ZigBee的校园安全监控系统设计＊

本文设计了一种基于ZigBee技术的校园监控系统,将ZigBee监控网络提供的目标位置信息与监控摄像机群结合,实时监控校园的安全。监控系统利用ZigBee节点进行定位与信息通信,当图像识别超出安全阈值,全部可拍摄范围内的节点摄像头自动对锁定目标跟踪监控,同时,系统自动发送报警电话及邮件至学校保卫处和范围内的人群,邮件内容含有危险人群及物品的位置信息和现场监控的实时画面。仿真实验表明,监控目标跟踪定位误差在3m之内时,跟踪目标可出现在摄像机监控显示内,且清晰可识别。     

一种基于单片机系统控制的多功能插座

本文介绍了多功能智能插座用途,重点阐述了基于单片机系统控制的硬件、软件设计,多功能插座采用温度监控、反接保护提高了插座的安全性能,具有广阔的市场前景.     

电厂电气监控系统探讨

随着计算机技术和网络技术的不断进步,对电气自动化水平要求越来越高。电气监控系统具有操作方便、可控度高、检修方便等特点,可以实现用电优化、故障迅速切换和恢复、减少值班人员的工作量、提高工作效率的作用,为电厂的安全稳定工作提供了保障,因此,电厂电力监控系统的应用具有重要意义。本文介绍了电厂电气监控系统的工作原理,并分析了电气监控系统在发展中存在的问题以及系统的调试情况。     

具有过载保护的交流固态继电器设计

针对现有的交流固态继电器对过载有较大的敏感性,必须用快速熔断器或RC阻尼电路对其进行过载保护的缺点,提出一种新型交流固态继电器的设计方法。在原有固态继电器电路中嵌入电流监控电路监控电流输出,可设定过载保护电流,在达到预设的电流值时自动关闭输出,并锁定。试验表明,该设计能在过载时有效保护固态继电器,减少元器件的损害,增加了系统的可靠性和可维护性。     

试析嵌入式电气安全智能监控系统的设计

文章基于嵌入式技术对电气安全智能监控系统进行了设计,其中包含了双单片机监控器与集中数据监控器,以现场监控器为基础,集中数据控制器为核心,远程控制软件为扩展,实现了对配电回路及火灾隐患的实时、有效监控,同时还能够实现远程控制。文章对嵌入式电气安全智能监控系统的总体架构与硬件设计、软件设计进行了分析。     

Molex MediSpec~(TM)混合式圆形MT连接器和插座提供适用于医疗系统的精简解决方案

<正>全球领先的全套互连产品供应商Molex公司推出MediSpecTM混合圆形(Hybrid Circular)MT电缆和插座系统,这是一款集成式光学和电气解决方案,能够减少医疗设备和器材中所需的连接器数目。该多功能连接器使用Molex圆形MT光纤连接器和插座技术,提供三种可配置的MT套管兼容端口,用于铜或光纤     

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.     

Nanoimprint Lithography -A Next Generation High Volume Lithography Technique

IntroductionNanoimprint Lithography is a well-acknowl-edged low cost, high resolution, large area pattern-ing process. It includes the most promising methods,high-pressure hot embossing lithography (HEL) [2],UV-cured imprinting (UV-NIL) [3] and micro contactprinting (m-CP, MCP) [4]. Curing of the imprintedstructures is either done by subsequent UV-lightexposure in the case of UV-NIL or by cooling downbelow the glass transition temperature of the ther-moplastic material in case of HEL…     

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.     

Influence of PVK ： NPB hole transporting layer on the characteristics of organic light-emitting devices

A doping system consisting of NPB and PVK is employed as a composite hole transporting layer （CHTL）. By adjusting the component ratio of the doping system, a series of devices with different concentration proportion of PVK ： NPB are constracted. The result shows that doping concentration of NPB enhances the competence of hole transporting ability, and modifies the recombination region of charge as well as affects the surface morphology of doped film. Optimum device with a maximum brightness of 7852 cd/m^2 and a power efficiency of 1.75 lm/W has been obtained by choosing a concentration proportion of PVK ： NPB at 1：3.     

New insert layer structure OLEDs

An insert layer structure organic electroluminescent device（OLED） based on a new luminescent material （Zn（salen）） is fabricated. The configuration of the device is ITO/CuPc/NPD/Zn（salen）/Liq/LiF/A1/CuPc/NPD/Zn（salen）/Liq/LiF/A1. Effective insert electrode layers comprising LiF（1nm）/Al（5 nm） are used as a single semitransparent mirror, and bilayer cathode LiF（1 nm）/A1（100 nm） is used as a reflecting mirror. The two mirrors form a Fabry-Perot microcavity and two emissive units. The maximum brightness and luminous efficiency reach 674 cd/m^2 and 2.652 cd/A, respectively, which are 2.1 and 3.7 times higher than the conventional device, respectively. The superior brightness and luminous efficiency over conventional single-unit devices are attributed to microcavity effect.     

Analysis of error performance on Turbo coded FDPIM

Due to variable symbol length of digital pulse interval modulation（DPIM）, it is difficult to analyze the error performances of Turbo coded DPIM. To solve this problem, a fixed-length digital pulse interval modulation（FDPIM） method is provided. The FDPIM modulation structure is introduced. The packet error rates of uncoded FDPIM are analyzed and compared with that of DPIM. Bit error rates of Turbo coded FDPIM are simulated based on three kinds of analytical models under weak turbulence channel. The results show that packet error rate of uncoded FDPIM is inferior to that of uncoded DPIM. However, FDPIM is easy to be implemented and easy to be combined, with Turbo code for soft-decision because of its fixed length. Besides, the introduction of Turbo code in this modulation can decrease the average power about 10 dBm, which means that it can improve the error performance of the system effectively.     

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.     

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.