基于LabVIEW和Atmega16的GAL16V8编程器的制作

介绍一种由PC机USB串口发送数据到Atmega16单片机并由Atmega16控制编程的GAL16V8编程器的制作。详述了GAL16V8烧录器的硬件电路的设计,单片机Atmega16如何根据指令进行烧录,以及用软件LabVIEW实现编程数据顺序的调整。该编程器实现了对LATTICE公司的GAL16V8B、GAL16V8D与ATMEL公司的ATF16V8B的不同烧录指令,适用于实验教学。     

基于ATmega128数字化报站器的设计与实现

针对地铁列车运行系统中进口轨道列车数字化报站器存在的不足,提出了一套以ATmega128为控制核心,以SD卡为存储介质,基于MP3音频格式的数字化报站器的解决方案,并给出了数字化报站器的硬件设计和软件实现方法,解决了进口数字化报站器存储容量小、更换音频信息操作复杂等问题。     

光伏电站的无线监控系统设计与实现

本文介绍了几种普遍应用于光伏系统中的远程监控技术,并在东方日立（成都）电控设备有限公司自主研发的光伏逆变器基础上,开发了结合RS485总线和射频无线通讯的光伏电站监控系统,使远程控制中心可实时监控多台光伏逆变器的运行情况和数据。系统已在两个光伏电站长时间连续稳定地运行,表明该方案具备工程应用性。     

基于B/S的组合机床设计系统开发

利用PRO/E软件、SQL2005数据库和VS.net编程软件为开发平台,采用Top-Down技术,建立了组合机床的参数化三维模型图库并开发了基于B/S的组合机床异地设计系统.用户通过浏览器在组合机床设计系统的引导下可完成对组合机床设计的动力头功率计算模块、自动匹配组合机床模块、自动装配、生成三图一卡等总体设计和主轴箱等模块的详细设计,提高了产品的开发能力,缩短了产品的设计周期,降低了生产成本.     

大坝安全监测分析评价系统开发及应用

为了确保大坝安全,提高运行管理水平,开发一套功能齐全的大坝安全监测分析评价系统．介绍了采用的．NET Framework技术、ADO．NET和开发工具VS2005,阐述了大坝安全监测分析评价系统的内容和总体结构,并对系统的功能进行了开发和实现,最后将本系统在河南洛阳陆浑水库进行了应用,效果良好．     

三维植物根系扫描仪的控制软件开发

围绕步进电机的控制,讨论了如何使其在三维扫描仪的定标和360度旋转拍照中发挥作用,结合已有的三维扫描仪,分析了本扫描仪的软硬件构成,重点论述了如何在VS2005下利用OCX控件开发适用于本系统的控制软件。实验表明本软件界面友好,操作简单,控制精确,满足了本系统的需求。     

基于C#的Windows CE串口软件的开发

针对基于Windows CE平台的串口通信程序几乎都是基于VC++的API调用,很少有人使用C#编程的问题,采用C#语言开发了基于Windows CE的串口通信软件,程序主要利用VS2008的Ser-ial控件,依靠异步进行读写操作.实验结果表明,该程序能够正常接收到来自计算机的数据完成串行通信.     

FORMATION OF AIN WHISKERS BY NITRIDATION OF AI/AIN POWDERS

The aluminum nitride whiskers were synthe-sized by the nitridation of Al/AlN powders in a flowing ni-trogen atmosphere. The whiskers were about 0. 5μm in diame-ter and 10～20μm in length, and they were straight and hadsmooth surfaces. The morphology of the whiskers were stud-ied by means of SEM and TEM. The AlN whiskers weregrown via vapor-solid (VS) mechanism.     

Mild alkaline pre-treatments loosen fibre structure enhancing methane production from biomass crops and residues

Three ligno-cellulosic substrates representing varying levels of biodegradability (giant reed, GR; fibre sorghum, FS; barley straw, BS) were combined with mild alkaline pre-treatments (NaOH 0.05, 0.10 and 0.15 N at 25 °C for 24 h) plus untreated controls, to study pre-treatment effects on physical-chemical structure, anaerobic digestibility and methane output of the three substrates. In a batch anaerobic digestion (AD) assay (58 days; 35 °C; 4 g VS l⁻¹), the most recalcitrant substrate (GR) staged the highest increase in cumulative methane yield: +30% with NaOH 0.15 N over 190 ml CH₄ g⁻¹ VS in untreated GR. Conversely, the least recalcitrant substrate (FS) exhibited the lowest gain (+10% over 248 ml CH₄ g⁻¹ VS), while an intermediate behaviour was shown by BS (+15% over 232 ml CH₄ g⁻¹ VS). Pre-treatments speeded AD kinetics and reduced technical digestion time (i.e., the time needed to achieve 80% methane potential), which are the premises for increased production capacity of full scale AD plants. Fibre components (cellulose, hemicellulose and acid insoluble lignin determined after acid hydrolysis) and substrate structure (Fourier transform infra-red spectroscopy and scanning electron microscopy) outlined reductions of the three fibre components after pre-treatments, supporting claims of loosened binding of lignin with cellulose and hemicellulose. Hence, mild alkaline pre-treatments were shown to improve the biodegradability of ligno-cellulosic substrates to an extent proportional to their recalcitrance. In turn, this contributes to mitigate the food vs. fuel controversy raised by the use of whole plant cereals (namely, maize) as feedstocks for biogas production.     

Shape controlled synthesis and growth mechanism of one-dimensional zinc oxide nanomaterials

Some types of ZnO nanostructures with various shape and size, including tetrapod-like ZnO (T-ZnO) nanorods, nanowires and nanonbbons, have been obtained by controlled growth process. The nanostructures of ZnO have been investigated by means of field-emission scanning electron microscope, transmission electron microscopy and high-resolution transmission electron microscopy. The growth mechanisms of various ZnO nanostructures were proposed and discussed.