基于S3C44B0X的网络磁盘的设计与实现

文章结合嵌入式技术和存储网络技术的发展,设计了一种简单易用的网络磁盘。该磁盘采用802.3和TCP/IP通信协议,可以应用于以太网局域网和Internet中,用户端直接通过网络访问磁盘上的数据。文章详细讨论了网络磁盘的软件系统和关键技术,并通过在S3C44B0X开发板上移植uClinux操作系统和开发应用软件,实现了网络磁盘。     

基于S3C2410的嵌入式弧焊电源测试平台设计

基于三星公司的S3C2410处理器设计了一款弧焊电源测试平台,利用该平台实现对弧焊电源电参数的测量,评估被测弧焊电源的质量和产品性能。该系统适合交、直流弧焊电源测试,可以进行静态工作点的测试和电流、电压及功率等电参数的测量。     

ARM嵌入式系统GPIO扩展键盘设计

介绍一种在ARM嵌入式系统上扩展键盘的设计方法,以运行Linux操作系统的S3C44B0嵌入式系统为例,对扩展键盘接口电路设计和键盘驱动程序开发都作了说明。在接口电路的硬件设计中,充分利用了GPIO端口配置灵活的优势。     

Linux下S3C2440微控制器的CAN驱动设计与实现

给出了嵌入式微控制器S3C2440通过SPI接口与CAN控制器MCP2510通信硬件结构,详细阐述了从驱动程序的结构、SPI和CAN控制器的初始化过程及驱动程序的调用流程.通过在CAN网络上的试验验证了所提出的驱动设计方案和实现技术是可行与有效的.     

基于ARM的电力系统谐波检测硬件设计与研究

针对电力系统中谐波检测与分析准确度较低的问题,提出了一种以硬件电路设计为主的谐波检测方法。该方法以ARM芯片S3C44BOX为核心,对整个系统的低通滤波、同步采样及A/D转换等模块均进行了具体设计,并结合μC/OS-Ⅱ操作系统和快速傅里叶算法(FFT),使整个系统在可靠性及准确度等方面都有了显著的提高。     

基于B/S模式的化工储罐在线监测系统的设计与实现

针对C/S结构的SCADA系统软件开放性差的问题,采用B/S三层架构模式,利用微软公司的ASP.NET AJAX框架,结合ADO.NET技术,设计并实现了基于Internet的化工储罐在线监测系统。阐述了在线监测系统的基本结构框架设计,并对各功能模块作了描述,同时运用客户端编程模型实现了页面无刷新地显示实时数据。实际表明,系统运行稳定,可供大量用户在线使用。     

基于B/S结构的空气源热泵热水机组的远程监控系统设计

设计基于B/S结构的空气源热泵热水机组的远程实时监控系统,介绍系统的体系结构、实现技术和软件功能.实际运行结果表明,该系统具有良好的稳定性、灵活性、扩展性和可维护性.     

高固体分溶剂型3C1B涂装工艺的应用及涂膜外观影响的研究

介绍了涂装新技术溶剂型高固3C1B特点以及该工艺低VOC低碳排放的优点,同时也简单介绍其施工应用的特点,并阐述了在改进外观方面需要注意的关键点.     

Study of polypropylene/montmorillonite nanocomposites prepared by solid‐state shear compounding (S3C) using pan‐mill equipment: the morphology of montmorillonite and thermal properties of the nanocomposites

In this paper, polypropylene (PP)/organophilic montmorillonite (OMMT) nanocomposites were successfully prepared without any compatibilizers by solid‐state shear compounding (S³C) using pan‐mill equipment. X‐ray diffraction (XRD) patterns show that the OMMT characteristic (001) peak at 2θ equal to 4.59 degrees disappeared for the milled OMMT and corresponding composites. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) photographs show that the thickness of pan‐milled OMMT decreased from ca 100–200 nm to ca 30–50 nm, and OMMT was partly exfoliated in the PP matrix because the pan‐type mill can exert fairly strong squeezing force in the normal direction and shearing force in both radial and tangential directions on milled materials. PP/OMMT nanocomposites at low OMMT loading have higher melting point, crystallization temperature, thermal degradation temperature and heat distortion temperature than those of neat PP. Moreover, addition of OMMT accelerates crystallization of PP significantly. S³C is a novel approach to prepare polymer/layered silicate nanocomposites with high performances at low filler loading. Copyright © 2004 Society of Chemical Industry     

Deposition and characterisation of TiO2 coatings on various supports for structured (photo)catalytic reactors

Different types of aqueous TiO₂–P25 suspensions were prepared and their properties, including rheological behaviour and zeta potential, were studied. Then, TiO₂ suspensions were used to elaborate TiO₂ coatings on various substrates (cordierite monolith, stainless steel plates and -SiC foam) using a dip-coating method. The relationship between the suspension stability and the coating adhesion has been considered. The structural and morphological characterisation of TiO₂ coatings has been performed using scanning electron microscopy, X-ray diffraction and other methods. Finally, the photocatalytic properties of the materials have been determined by studying the photooxidation of aqueous ammonia.