在ARINC429航空总线设备中实现USB功能

航电设备主控制系统通过ARINC429接口周期性地接收分系统的工作状态信息,利用低温性能较好且价格低廉的MCS-51单片机对数据进行处理,再通过USB接口将包含工作状态的信息写入U盘,使航电设备工作时的参数和状态能够随时用U盘读出,实现对设备工作状态的监控。介绍了单片机控制USB接口芯片SL811HS作为USB主机的硬件设计和底层驱动的编写。ARINC429接口采用HS3282作为接口芯片,以锁存器作为虚拟总线,解决了MCS-51单片机与429接口芯片HS3282总线宽度不匹配的问题,给出了接口的硬件和软件设计方案。     

基于单片机的LED摇摇棒的研究

本文用单片机做核心控制部件,以发光二级管为控制对象,利用人眼的视觉暂留特性,通过分时刷新16个高亮度发光二极管来显示输出文字或图案等信息,从而达到在视觉平面上传达信息的作用。     

TFT-OLED驱动电路的研究

从OLED的发光原理出发,介绍了OLED器件的结构特点和常用的TFT OLED像素电路的结构。利用TFT OLED行列驱动芯片和控制芯片,通过MCS 51单片机的控制来驱动240×320×3点阵的TFT OLED屏,实现大信息量的图形显示。该设计方案所需外围器件少,硬件结构简单,有利于提高系统的运行效率。介绍了驱动模块的功能和硬件接口电路的设计方法,并给出了单片机的软件流程图。     

基于单片机控制的角度调整系统设计

本系统采用单片机和PWM调速系统作为控制和处理核心,由L298N芯片驱动电机、角度传感器、风扇、4*4矩阵键盘及LCD128*64液晶显示屏构成的一个帆板控制系统。由角度传感器测得角度并反馈给单片机风扇转速控制模块构成风速闭环控制系统,利用单片机产生的PWM控制风扇电机驱动模块,从而实现角度的精准控制。     

基于单片机的步进电机系统设计

文章介绍一款基于单片机控制的步进电机电路设计,对步进电机完成正反转、启停、转速控制等基本功能,利用单片机控制电机驱动芯片、键盘实现功能切换,采用发光二极管显示步进电机的各个工作状态。对步进电机、单片机等硬件系统工作原理进行详细说明,同时对硬件电路进行仿真调试。本设计具有思路清晰、高可靠性、较强稳定性等特点,具有广泛的应用价值。     

大中型光立方体及驱动组件建模与仿真

针对大中型光立方体系统硬件设计的繁杂性和显示控制效果因缺少模型难以验证的问题,基于平行投影原理和Proteus软件的建模技术,提出并设计了光立方体虚拟仿真模型及其通用驱动组件模型。以3D8光立方体为例进行建模,并对驱动时序和字符图案显示进行了系统仿真验证。同时,根据该建模方法设计了3D16、3D32和3D64光立方体及驱动组件,仿真验证了汉字、点云模型的显示效果。结果证明:该建模方法能较好地反映光立方体系统的软硬件工作原理,为光立方系统设计验证提供了准三维虚拟可视化方法,为大中型光立方体的多样化显示、扩展以及三维立体显示器的研究和工程应用设计等提供了模型参考。     

某型电台模拟训练器人机界面显示电路设计

介绍某型电台模拟训练器显示电路的设计过程。该电路以基于51内核的高性能单片机MSC1210单片机作为主控单元，通过虚拟I^2C总线（Inter IC BUS）控制数码管驱动芯片SD7218，实现实际装备的频率及工作状态显示、存贮、调用及出错信息提示等功能，同时通过串行接口连接网络通信单片机实现与主控计算机的互联。     

基于STM32的单彩LED在AFC运行状态显示中的设计

为了满足乘客对AFC的需求,提出了一种单彩LED在AFC系统运行状态显示中的设计应用,该控制系统以Cortex-M3内核芯片STM32F103VET6作为控制中心,采用恒流驱动芯片MBI5042实现LED恒流驱动,系统可支持256级灰度单彩LED显示屏的汉字、图案的显示,同时能够方便地进行远程控制,以及控制AFC运行状态的显示。     

基于Zigbee控制的LED 3D立体效果显示系统设计研究

基于Zigbee控制的LED3D立体效果光立方旋转显示系统利用HT32单片机作为核心部件,光立方是一个长、宽、高由8×8×8个LED灯组成的真实3D立方体显示系统.其最大的特点,就是带给观赏者立体的超酷的3D视觉体验.通过对单片机编程来控制LED的亮灭,采用延时来控制LED亮灭时间的长短,用Zigbee技术控制光立方旋转,最终使得整个立体展现不同的造型和图案,使其变得美轮美奂、绚丽多彩.     

低成本“任意写”LED显示屏的研制

LED显示屏通常由电脑控制实现文字的显示,这一系统的硬件成本和使用成本都非常高。本系统以STC12C5408高速单片机为数据处理的核心器件,设计了一款16片8×8 LED点阵模块组成32×32发光点阵显示屏模块,在输入状态利用光电二极管作为书写笔,可以在屏幕的任意位置输入任意文字或图案,储存在单片机的EEPROM中,显示时在相应的位置显示输入的文字图案。输入时具有 “点亮、划亮、反显、整屏擦除、笔画擦除”等功能满足不同客户需求,本系统还能根据周围光强,自动调节屏幕亮度,利用本系统可以扩展制成不同规格、内容随时可以修改的低成本LED显示屏,具有极大的推广意义。     

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