基于PROTEUS的单片机温度采集系统设计与仿真

本文介绍一种基于Proteus仿真实现的数字温度采集系统,阐述了系统的工作原理、硬件电路以及软件设计。该系统吸收了硬件软件化的思想,大部分功能通过软件来实现,硬件电路设计简单明了,稳定性大大提高。利用先进的嵌入式仿真平台Proteus进行系统软硬件协同仿真,以检验和评估设计的可行性和稳定性。仿真结果表明,Proteus在嵌入式开发领域具有方便快捷、降低设计成本、提高工作效率等优点。     

基于Proteus的自动拨号报警器仿真设计

利用嵌入式系统仿真软件Proteus实现了基于AT89C51单片机的自动拨号报警器仿真设计。详细分析自动拨号报警器的硬件设计原理,并在Keil开发环境下设计了对应的驱动程序,在Proteus中完成了软、硬件的联合仿真调试,最后给出了仿真运行结果。通过Proteus软件的前期仿真,大大缩短了实际开发周期,降低开发成本,对于单片机应用系统、电子电路的开发和教学等都有较大的实用价值,且设计的电路及驱动程序对相应的实际应用系统具有一定的借鉴作用。     

基于Proteus ISIS 7.4的虚拟液晶显示屏设计

以液晶显示器LM016L为例,系统论述了虚拟液晶显示屏的硬、软件设计思路和实现方法.以模块化的方法进行系统软件设计,提高了程序的可读性.在嵌入式系统设计与仿真平台Proteus ISIS 7.4上,对系统进行了软、硬件全方位设计与交互仿真,成功地实现了虚拟液晶显示屏的设计目的,显示了Proteus软件在单片机系统设计中的优越性和便捷性,缩短了设计进程,降低了系统设计成本.     

基于Proteus的公交车液晶显示报站系统的设计与仿真

在嵌入式系统软硬件设计仿真平台Proteus的基础上设计了公交车液晶显示报站系统.硬件电路包括控制器件AT89C51、显示模块LCD 128×64和4个操作按键.通过汉字取模软件生成汉字点阵,采用汇编语言编程实现了康定城第2路公交车单线方向的报站仿真.     

基于Proteus的温控报警器设计

利用仿Proteus真软件实现了基于AT89C51单片机的温控报警器仿真设计。详细分析温控报警器的硬件设计原理,并在Keil开发环境下设计了对应的驱动程序,在Proteus中完成了软、硬件的联合仿真调试。最后给出了仿真运行结果。通过Proteus软件和Keil软件的联合调试,大大缩短了开发周期,降低开发成本。该设计的电路及驱动程序对相应的实际应用系统具有一定的借鉴作用。     

基于Proteus的单片机汉字点阵显示电路设计

在嵌入式系统软硬件设计仿真平台Proteus的基础上设计了16×16 LED汉字点阵显示电路.硬件电路由AT89C51单片机控制器、LED显示屏行列驱动电路以及LED点阵显示屏3部分组成.通过汉字字模点阵数据批量生成软件来实现汉字点阵,采用汇编语言对单片机进行控制操作.完成了实物电路并在 Proteus软件的基础上对结果进行了仿真,得到了汉字点阵效果图.实验结果表明,在单片机显示领域的设计开发中Proteus软件具有重要的实用价值,可以大幅缩短开发周期,节约开发成本.     

基于proteus的单片机以太网接口模块设计

基于Proteus嵌入式系统仿真平台,设计了51单片机与Enc28j60芯片的硬件接口电路,在Keil中开发了网络驱动程序,利用Proteus与Keil联调完成单片机网络通信模块软硬件仿真调试。通过测试,实现了单片机接入以太网,能与计算机可靠传输数据,达到了设计要求。     

基于单片机的水温控制系统仿真设计

利用仿Proteus真软件实现了基于单片机的温度控制器仿真设计。详细分析单片机温度控制器的硬件设计原理,介绍了其编程思路,在Proteus中完成了软、硬件的联合仿真调试,最后给出了仿真运行结果。该设计的电路及驱动程序对相应的实际应用系统具有一定的借鉴作用。     

Protues在单片机系统设计中的应用

单片机系统设计包含硬件设计和软件设计2部分。传统的方法是先进行硬件设计,然后使用仿真器在硬件电路上进行仿真调试。当硬件电路不满足设计要求时,就需要修改硬件电路重新进行调试。Proteus是单片机系统仿真软件,在Proteus环境下可直接对单片机系统进行硬件设计和软件仿真,当硬件电路不满足设计要求时,即直接修改电路重新进行仿真,直到系统软硬件满足要求为止,故应用Proteus进行单片机系统仿真设计提高开发效率。使用Protues对基于DS18B20单片机多路温度采集系统进行设计和仿真,验证该设计的正确性和可行性。     

基于嵌入式系统在教学中的应用

本文指出在嵌入式系统课程的各教学环节引入Proteus、ARM(重点介绍Proteus软件)软件,通过动态仿真模型的设计,能用到毕业设计以及创新设计当中。     

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.     

A rigorous proof of MIMO channel capacity’s increase with antenna number

It is well known that adding more antennas at the transmitter or at the receiver may offer larger channel capacity in the multiple-input multiple-output（MIMO） communication systems. In this letter, a simple proof is presented for the fact that the channel capacity increases with an increase in the number of receiving antennas. The proof is based on the famous capacity formula of Foschini and Gans with matrix theory.     

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