基于ARM的智能避障小车设计

避障是智能小车应具备的基本功能之一,以s3c44b0x芯片为核心,采集前方障碍信息并对智能小车进行控制,选用红外避障传感器检测智能小车前方的障碍物,设计了智能小车的自动避障系统,并阐述其工作原理。本系统设计简单、成本低、实时性好,在室内环境中取得了预期的实验结果,能使智能小车无碰撞到达目的地。     

循迹多功能小车的设计与实现

智能车辆是目前世界车辆研究领域的热点,也是汽车工业新的增长点,是未来人们生活的重要载体。研制一种智能,高效的智能小车控制系统具有重要的实际意义和科学理论价值。论文基于STC89C52控制核心,利用反射式光电传感器检测黑线实现小车循迹和道路障碍物检测与提示,能实现小车自动根据地面黑线前进倒退、转向行驶,光电传感测距提示障碍物等功能,LCD1602显示器能实时显示小车的速度与行程,设计并实现了能自动循迹的智能小车控制系统,达到设计目标。     

指定区域内智能硬币识别小车的设计

对指定区域内金属类型进行检测具有重要的研究意义,本文主要设计一智能金属探测小车。采用STC12C5A60S2以及MSP430作为小车的控制核心,L298N作为电机驱动模块,使用LDC1000作为金属探测传感器。小车的软件部分采用C语言编程,主要包含金属检测子程序、电机驱动子程序以及报警子程序等。实验采用铁丝作为识别边界,铁丝中央随意放置不同币值的硬币,检测不同币值的个数。在指定的区域内做了大量的检测实验,实验验证该检测平台能较准确地检测出不同币值的硬币。     

家庭智能报警系统设计

本文介绍了一种以单片机STC89C52为核心的家庭智能测控报警系统。给出了硬件设计电路原理图和软件流程图;本系统具有对居室内的温湿度检测、光照强度检测、烟雾检测及报警等功能。     

基于自动控制理论的高速循迹智能车设计

本设计以自动控制系统为研究对象,以飞思卡尔K60单片机为控制核心,设计了一种新型智能高速循迹小车,旨在解决现实生活中勘测、搜救行动中人为难以到达位置的勘探搜救难题。基于自动控制理论的智能高速巡迹小车,利用各类传感器确定路径及姿态,实现智能高速循迹行驶,具有自动稳定控制车身,高速行驶,并稳定回传数据的功能,使现实生活中的搜救勘探活动更加智能高效。     

基于红外光电传感器的智能寻迹小车设计

寻迹小车可以看作是缩小化的智能汽车,对智能汽车的研究有一定的借鉴意义。采用飞思卡尔公司的MC9S12DG128B作为核心控制芯片,设计了通过红外光电传感器检测路径信息的智能寻迹小车。该系统由处理器模块、路径识别模块、电机驱动模块、舵机驱动模块、车速检测模块、液晶显示模块与电源模块等组成。实际应用表明,该小车可以在专门设计的跑道上快速平稳地实现寻迹功能。     

基于单片机的智能小车避障循迹系统设计

本设计是以STC89C52为核心,根据超声波等感测模块传输的路面信息,检测信号识别障碍物并及时调整小车行驶走向,实现了小车自适应行驶、避障的功能。智能小车自适应行驶的成功研究有助于智能车辆的研制与开发,同时也为交通工具的智能化发展提供了一个合理可行的方向。     

基于ArduinoMega2560的无线监控小车设计

本文简要介绍了一款基于Arduino Mega2560的智能无线控制小车的设计方案。智能小车主要分为传感器模块,最小系统模块,电机驱动模块,电源模块,无线控制模块,以及摄像头模块等。本方案vXArduino平台为核心部件,利用光电检测技术,红外避障,配合Arduino的软件算法实现了对小车的无线控制、wifi实时监控等功能。通过试验证明了该方案可行,智能小车最终完成了设计之初要求的各项任务。该方案对于Arduino新型集成开发环境的应用具有一定的参考价值。     

基于单片机遥控超声波测距智能小车

系统以多优点的单片机做为核心控制部件,采用HC-SR04作为超声波测距模块,通过IO触发方式测距法实现小车与障碍物距离测算,并实时显示在液晶显示屏上,在运行过程中通过遥控器可以使小车前进、后退、左转、右转等改变小车运行状态.通过单片机控制实现了以遥控智能小车为载体的超声波测距系统,可以实现实时测距并显示距离、报警、智能避障等功能.     

基于STC89C52单片机的智能小车的设计

主要介绍了一种具有红外遥控、智能寻迹、自动避障等功能的智能小车的设计。本小车采用STC89C52单片机为系统控制核心,单向PWM的直流电机为系统驱动,辅助红外反射式传感器和红外接收器,实现了小车智能寻迹、自动避障和遥控导航,并通过1602液晶显示屏显示信息。     

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.     

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.     

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