基于莲花发电厂DDL开关的励磁系统改进

莲花发电厂的励磁系统原为南瑞生产的SJ-800型励磁调节器,由于其中的PSS(power system stabilization电力系统稳定器)单元不能满足一个导流洞;根据国标的要求,励磁系统应有两套功率柜并列运行,SJ-800的功率柜的电流不均问题突出,不能得到有效的解决.拟更换广州电科院生产的EXC9000系列微机励磁调节器.改进后的微机励磁调节器,将会有独立的PSS单元,并且采用智能均流系统,对两套功率柜进行智能均流.     

基于C8051F060的数据采集子站设计

介绍了一种基于C8051F060嵌入式MUC的高精度数据采集子站设计,给出了相应硬件设计和软件程序.该设计以C8051F060 MUC为控制核心,仅用单片机内部集成的16位ADC对-10v～+10V电压范围内的模拟量进行高精度采集,利用RS232串口或CAN总线将采集的数据传给上位控制计算机.实际应用表明,该设计具有采集速度快、精度高,运行稳定的优点.     

基于C8051F060的微型生化分析仪高速数据采集系统

介绍了一种基于C8051F060单片机的微型生化分析仪高速数据采集系统.系统在CPLD产生的时序逻辑驱动下,以C8051F060单片机为控制核心,利用单片机片内集成的16位分辨率的A/D对CCD视频信号进行精确数据采集.为了加快数据存储速度,采用了DMA存储技术,使采样频率提高到300 kHz,满足了微型生化分析仪对高速采样的需求.实践检验表明,系统具有测试速度快、精度高、运行稳定、抗干扰能力强和成本低等特点.     

基于ZIGBEE的压力传感器标定系统的研究

针对随钻测量系统中压力传感器需要标定的问题,本文采用C8051F060作为微处理器,配合ZIGBEE无线传榆模块及标准自动加压台,设计了一种对未知压力传感器进行智能标定的系统,经过室内试验和现场试验验证,这种压力标定系统具有易操作、稳定性好、精度高等特点,可以满足压力传感器标定要求。     

基于C8051F040的CAN总线智能节点设计

给出了基于C8051F040的智能节点硬件、软件设计方案.     

基于C8051F060单片机的CAN-USB的接口设计

本文提出了基于C8051F系列单片机的CAN总线与USB总线的接口设计方案,创新地采用了Silicon公司生产的C8051F060单片机作为主控芯片实现接口的数据传输。该芯片集成了CAN控制器,可以达到接口小型化,低成本的目的。本文给出了接口的系统结构,硬件设计电路和软件设计程序。在实际运用中,该接口模块工作稳定,能够较好地实现CAN总线与USB总线的数据传输。     

基于C8051F060的采集存储系统的设计

介绍一种基于C8051F060单片机和NANDFlash的数据采集存储系统．该系统可实现3路信号采样,每路采样率为5KS／s。通过异步串行通信接口实现数据传输。并详细说明系统的软件设计。     

基于C8051F060的采集存储系统的设计

介绍一种基于C8051F060单片机和NAND Flash的数据采集存储系统.该系统可实现3路信号采样,每路采样率为5 KS/s,通过异步串行通信接口实现数据传输.并详细说明系统的软件设计.     

混合信号单片机C8051F060的DMA接口及编程

C8051F060是Cygnal公司新推出的一款高集成度混合信号单片机,该单片机具有16位1Msps的高性能模数转换器接口和专用于快速传送ADC结果数据的直接存储器存取接口DMA,本文介绍了DMA的原理及使用方法.     

基于C8051F060单片机的多路数据采集系统设计

本数据采集系统采用C8051F060单片机内置的数模转换器,最多可对8路模拟量数据进行采集,进行模数转换后将通过串口向计算机传输。同时使用Visual Basic 程序语言进行上位机设计,接收单片机发送的数据,并进行波形还原,实现实时数据采集功能。     

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.     

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     

JOURNAL OF ELECTRONICS(CHINA)

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NOTICE OF CHANGING JOURNAL OF ELECTRONICS （CHINA） TO MICROSYSTEMS ＆ NANOENGINEERING

正Journal of Electronics(China)(JE)was founded in 1984,sponsored by the Institute of Electronics,Chinese Academy of Sciences.JE is one of the first English academic journals in China in the field of Electronics and Information technology.The journal was published quarterly since it was launched in 1984 to 2003,then it is published bimonthly till now.During