基于DSP+单片机的主从式智能轮椅语音控制系统

设计了一种以凌阳公司SPCE061A单片机为语音信息处理器,以DSP为驱动控制器的主从式智能轮椅语音控制新方案。采用SPCE061A单片机进行语音指令的训练、识别和处理,DSP作为驱动电机转动的PWM控制信号发生器,SPCE061A单片机和DSP之间通过SCI接口电路进行通信。详细阐述了智能轮椅语音控制系统各部分硬件结构及系统总体软件实现,重点讨论了电机驱动电路的硬件设计和系统软件流程。实验结果表明,研制开发的智能轮椅语音控制系统能够在语音或手动模式下实现轮椅的多种运动,语音识别正确率高于95%。     

基于SPCE061A的湿度语音播报系统设计

凌阳SPCE061A是语音功能非常突出的单片机,基于SPCE061A单片机的数字湿度检测系统是一种集湿度测量和语音播报于一体新型语音湿度计。对系统的进行硬件电路设计以及软件架构设计,并对主要部分进行了C语言编程。     

基于ZigBee节点的智能家居系统语音控制设计

为实现基于S3C6410核心处理器与ZigBee技术的智能家居系统的语音控制,研究设计了基于SPCE061A单片机的ZigBee语音子节点。凌阳单片机SPCE061A能够进行语音信号的采集、处理以及语音识别,并与无线射频芯片CC2530之间通过串口进行通信。由语音识别系统以及ZigBee无线收发模块等所组成的语音子节点通过ZigBee无线网络与网关进行通信,通过网关来控制其他的ZigBee子节点。该系统实现了对开关型以及红外型家电的智能语音控制。该智能家居语音控制系统具有识别率高,控制使用方便等特点,有一定的发展前景。     

基于单片机的语音元素在智能交通灯设计中的应用

模拟交通灯控制板就是通过使用单片机、PLC或其它器件控制一些LED和数码管,来模拟真实交通灯的功能。如模拟红黄绿灯交替闪亮、倒计数显示时间、方向灯指示方向等。另外,本系统利用SPCE061A单片机的语音特性,加入了语音的特色,红绿灯切换时利用语音进行提示。     

基于ZIGBEE技术的无线语音识别系统设计

文章介绍了ZIGBEE技术的基本特点和语音识别技术的基本原理,详细介绍了SPCE061A单片机在语音识别中的应用方法,以及与射频芯片CC2420之间的"MESSAGE"控制方式,本文结合SPCE061A单片机丰富的语音处理功能以及基于ZIGBEE的无线通信技术,设计了一种无线语音识别系统,具有广泛的应用价值.     

基于凌阳单片机的语音照明开关设计

介绍了一款基于凌阳单片机SPCE061A语音照明开关系统软硬件设计。该设计硬件上采用中国台湾凌阳科技股份有限公司生产的SPCE061A精简开发板,外围控制电路采用继电器驱动电路来控制220 V家用电器的照明灯。软件部分主要是设计特定人语音辨识系统和语音命令应答系统,模拟家用客厅组合式吸顶灯的控制,用语音实现对3路照明灯具亮灭的控制。经实验验证,该系统达到预期的目标。     

基于SPCE06IA的小车语音控制系统

本文利用凌阳16位单片机SPCE061A和电机驱动模块实现对小车运行的语音控制。整个小车由三大部分所组成,即车体、61板、控制板。该小车能够在语音控制下实现前进、后退、左转和右转等功能,并在LED显示器上显示其行驶路程,配合程序,还可实现小车的循迹、避障等功能。     

基于SPCE061A的出租车计费系统设计

为满足出租车计费的要求,利用凌阳单片机SPCE061A为主控制芯片设计一个出租车的计费系统,能够实现白天和黑夜分开计费,并带有语音迎送播报功能,还能显示时间和温度。     

学习型红外遥控装置的研究与设计

红外遥控是一种常用的通信和遥控方法,针时目前各种产品的遥控不能互相兼容的问题,研究了一种基于凌阳SPCE061A单片机的通用学习型红外遥控设计系统,该系统利用凌阳SPCE061A强大的语音功能,实现了语音提醒功能,并给出了部分硬件电路和软件设计方案.该学习型红外遥控器已广泛应用于多媒体教室、智能家居、家庭集中控制器等遥控设备.     

多功能语音控制小车的设计与实现

重点讨论其基本功能部分。采用凌阳公司的SPCE061A16位单片机作为语音控制小车的检测和控制核心,配合SPCE061A的语音特色,利用系统的语音播放和语音识别资源,通过控制I／O接口电路传输控制信息,最终实现多功能语音控制小车的基本功能。经反复试验,结果表明语音识别准确率高,控制效果良好。     

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.     

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.     

Curved crystal spectrometer for the measurement of X-ray lines from laser-produced plasmas

In order to diagnose the laser-produced plasmas, a focusing curved crystal spectrometer has been developed for measuring the X-ray lines radiated from a laser-produced plasmas. The design is based on the fact that the ray emitted from a source located at one focus of an ellipse will converge on the other focus by the reflection of the elliptical surface. The focal length and the eccentricity of the ellipse are 1350 mm and 0.9586, respectively. The spectrometer can be used to measure the X- ray lines in the wavelength range of 0.2-0.37 nm, and a LiF crystal （200） （2d = 0.4027 nm） is used as dispersive element covering Bragg angle from 30° to 67.5°. The spectrometer was tested on Shengnang- Ⅱ which can deliver laser energy of 60-80 J/pulse and the laser wavelength is 0.35 μm. Photographs of spectra including the 1 s2p ^1P1-1s^2 ^1S0 resonance line（w）, the 1s2p ^3P2-1s^2 1S0 magnetic quadrupole line（x）, the 1s2p ^3P1-1 s^2 ^1S0 intercombination lines（y）, the 1 s2p ^3S~1-1 s^2 ^1S0 forbidden line（z） in helium-like Ti Ⅹ Ⅺ and the 1 s2s2p ^2P3/2-1 s622s ^2S1/2 line（q） in lithium-like Ti Ⅹ Ⅹhave been recorded with a X-ray CCD camera. The experimental result shows that the wavelength resolution（λ/△ 2） is above 1000 and the elliptical crystal spectrometer is suitable for X-ray spectroscopy.     

Preparation and Characterization of TaN ALD Precursors

High purity organic-tantalum precursors for thin film ALD TaN were synthesized and characterized.Vapor pressure and thermal stability of these precursors were studied.From the vapor pressure analysis,it was found that TBTEMT has a higher vapor pressure than any other published liquid TaN precursor,including TBTDET,TAITMATA,and IPTDET.Thermal stability of the alkyl groups on the precursors was investigated using a 1H NMR technique.The results indicated that the tertbutylimino group is the most stable group on TBTDET and TBTEMT as compared to the dialkylamido groups.Thermal stability of TaN precursors decreased in the following order:TBTDET ＞ PDMAT ＞ TBTEMT.In conclusion,precursor vapor pressure and thermal stability were tuned by making slight variations in the ligand sphere around the metal center.     

Electronic Structure of Semiconductor Nanocrystals

This paper reviews our recent development of the use of the large-scale pseudopotential method to calculate the electronic structure of semiconductor nanocrystals, such as quantum dots and wires, which often contain tens of thousands of atoms. The calculated size-dependent exciton energies and absorption spectra of quantum dots and wires are in good agreement with experiments. We show that the electronic structure of a nanocrystal can be tuned not only by its size,but also by its shape. Finally,we show that defect properties in quantum dots can be significantly different from those in bulk semiconductors.     

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.