基于SEP3203的高精度功耗测量仪器设计

重点阐述高精度功耗检测仪器及其软件的开发工作。本仪器以东南大学ASIC工程中心自主研发的基于ARM7TDMI的SEP3203嵌入式微处理嚣为核心处理器，以TI公司的高精度数模转换器ADS1210为转换器件实现模／数转换。采集器共设16个通道，通道与通道之间采用小体积固态继电器M211进行输入量隔离厦通道选通，并用TI公司的程控放大器PGA204对较小信号进行放大以匹配AD转换器的输入量程，有效提高了测量精度。本仪器通过RS485与PC机相连，电气隔离良好，具有较高的工作稳定性。     

Advancements in the design and validation of an air pollution integrated assessment model for Spain

This paper describes the design and application of the Atmospheric Evaluation and Research Integrated model for Spain (AERIS). Currently, AERIS can provide concentration profiles of NO₂, O₃, SO₂, NH₃, PM, as a response to emission variations of relevant sectors in Spain. Results are calculated using transfer matrices based on an air quality modelling system (AQMS) composed by the WRF (meteorology), SMOKE (emissions) and CMAQ (atmospheric-chemical processes) models. The AERIS outputs were statistically tested against the conventional AQMS and observations, revealing a good agreement in both cases. At the moment, integrated assessment in AERIS focuses only on the link between emissions and concentrations. The quantification of deposition, impacts (health, ecosystems) and costs will be introduced in the future. In conclusion, the main asset of AERIS is its accuracy in predicting air quality outcomes for different scenarios through a simple yet robust modelling framework, avoiding complex programming and long computing times.     

基于SEP4020的盲人智能手机短信发送的设计

为了让弱视者和盲人群体能够发送短信,提出了一种基于嵌入式处理器SEP4020的盲文输入方法。针对盲文语言的特征,设计出一种六点盲文输入方法,并给出了在触摸屏上提取盲文的方法和步骤。在此基础上将盲文语言转换成汉语拼音,使会汉语拼音的普通人能够阅读盲人发过来的短信内容。最后以发送内容"你好"为例分析了短信发送的过程和PDU编码形成的方式,并成功地将系统移植到开发平台上。实验结果显示了能够正确获取在触摸屏上输入的盲文,并成功将转换成的汉语拼音通过无线模块发送出去,证明了这个方法的可行性和有效性。     

基于SEP4020处理器的IC卡接口设计

简要分析CPUIC卡T=0通信协议,重点介绍了SEP4020处理器和IC卡控制器TDA8007的硬件接口的设计,和CPUIC卡上／下电过程,以及APDU指令的具体实现。最后文章给出了测试结果。     

二丙基硅烷双酚A环氧树脂的表征及固化性能研究

采用红外光谱（FT—IR）和核磁共振（^29Si NMR）对3,3’-二（3-三甲氧基硅丙基）双酚A环氧树脂（SEP）进行了结构表征,并对其性能和固化进行了研究。该树脂为含烷氧硅基的环氧树脂,室温下可流动,室温下黏度比E51大,在60℃以上黏度相近。采用表干时间、DSC和FT-IR等对SEP的湿固化研究结果表明,该环氧树脂通过硅氧烷水解缩合而固化,表干时间随固化温度升高而减小。该环氧树脂可以像E-51一样用胺类固化剂进行固化,低温下凝胶时间稍长,90％以上比较接近。     

基于SEP3203拉力试验机嵌入式测控系统设计

针对材料试验机测控系统要求精度高,实时性好的特性,提出一种基于32位的ARM微处理器SEP3203和实时操作系统μC／OS-Ⅱ的电子万能试验机测控系统开发方案。其中,触摸屏与LCD合为一体,采用AC97＋UCBl400的工作方式来完成图形用户界面的设计;利用24位的CS5530芯片来完成数据模拟量的采集。在硬件平台基础上,选用μC／OS-Ⅱ作为控制器的操作系统,完成软件的结构化设计,通过移植μC／GUI,实现控制器的人机接口功能。     

无线传感器网络能量异构分簇算法的研究

在无线传感器网络能量异构环境下对低功耗自适应的分簇算法(Low Energy Adaptive Clustering Hierarchy,LEACH)与稳定选举协议(Stable Election Protocol,SEP)算法进行了分析,针对其存在的不足提出了一种改进的方案。在簇头选举过程中提高了剩余能量高、距离基站较近节点当选为簇头的概率,同时对当选为簇头的节点设定能量阈值,避免能量过低的节点当选为簇头。仿真结果表明,改进后的算法较好地均衡了网络中节点的能量消耗,有效地提高了网络中能量的利用效率,并且极大地延长了网络正常工作的生命周期。     

远程机房电源控制系统设计

论述了在无人职守机房运用中,如何实现在远程控制机房内各计算机的电源开关。设计方案采用软硬件相结合,以ARM7TDMI内核的SEP3203嵌入式处理器为硬件核心,通过GPIO口控制外部继电器开关,实现弱电控制交流强电输出的开关切换。软件上以VC 编写守护进程,ASP制作网管界面,配合COM组件、Access数据库和TCP/IP协议,实现远程电源控制方案。     

基于SEP3203的CF卡接口扩展及驱动程序设计

在嵌入式系统的中,通常需要一定的存储空间来存放系统程序、用户程序和其它数据.CF卡是目前使用较为广泛的存储设备,为方便数据交换,有必要在嵌入式系统中扩展CF卡接口.本文首先介绍了CF卡的基本结构、工作模式、内部寄存器和命令.然后基于SEP3203平台,介绍了工作在True IDE模式下CF卡的接口电路设计、基本读写操作流程以及在Fat16文件系统下的驱动程序设计.     

Near-infrared spectroscopic analysis of macronutrients and energy in homogenized meals

Near-infrared (NIR) reflectance spectroscopy was evaluated as a rapid and environmentally benign technique for the simultaneous determination of macronutrients and energy in commercially available, packaged meals. Reflectance spectra (400–2498 nm) of homogenized meals were obtained with a dispersive NIR spectrometer. Protein and moisture were measured by AOAC reference methods, total fat by a semi-automated acid hydrolysis, solvent extraction, gravimetric method and total carbohydrate calculated. Energy was calculated using Atwater factors. Using multivariate analysis software, PLS models (n = 113–115 products) were developed to relate NIR spectra of homogenized meals to the corresponding reference values. The models predicted components and energy in validation samples (n = 37–38 products), overall, with r² of above 0.96. Ratios of deviation to performance were between 3.6 and 6.6, and indicated adequacy of the models for screening, quality control, or process control. Performance of the models varied substantially when used to predict sub-groups of meals within the validation set.