煤粉炉一次风管风粉在线监测功能在DCS系统的实现

介绍了煤粉炉一次风管风粉在线监测系统的作用及其功能在DCS系统实现的过程，分析了改造的意义，以供读者参考。     

数字电影时代已经到来

全美百家杜比数字影院首映迪斯尼3D先锋之作——通过与杜比实验室进行革命性的合作并结合杜比数字影院播放技术以及Industrial Light ＆ Magic公司的专有的软件技术，怀特迪斯尼最新的3D技术借其第一部全CGI动画电影《CHICKEN LITTLE》（台译《鸡仔总动员》）登台亮相。     

大掺量粉煤灰混凝土研究

实验研究了早强剂、减水剂、高效早强减水剂对大掺量粉煤灰混凝土强度与和易性方面的影响。研究表明:减水剂、早强剂对大掺量粉煤灰混凝土有显著影响。当粉煤灰掺量占胶凝材料总量50%、早强剂掺量1.5%、SX-高效减水剂掺量1.15%时,标准养护下,3d强度达11.9MPa、7 d强度达18.5MPa、28 d强度达36.5MPa。     

Energy Efficient Run-Time Incremental Mapping for 3-D Networks-on-Chip

3-D Networks-on-Chip(NoC) emerge as a potent solution to address both the interconnection and design complexity problems facing future Multiprocessor System-on-Chips(MPSoCs).Effective run-time mapping on such 3-D NoC-based MPSoCs can be quite challenging,as the arrival order and task graphs of the target applications are typically not known a priori,which can be further complicated by stringent energy requirements for NoC systems.This paper thus presents an energy-aware run-time incremental mapping algorithm(ERIM) for 3-D NoC which can minimize the energy consumption due to the data communications among processor cores,while reducing the fragmentation effect on the incoming applications to be mapped,and simultaneously satisfying the thermal constraints imposed on each incoming application.Specifically,incoming applications are mapped to cuboid tile regions for lower energy consumption of communication and the minimal routing.Fragment tiles due to system fragmentation can be gleaned for better resource utilization.Extensive experiments have been conducted to evaluate the performance of the proposed algorithm ERIM,and the results are compared against the optimal mapping algorithm(branch-and-bound) and two heuristic algorithms(TB and TL).The experiments show that ERIM outperforms TB and TL methods with significant energy saving(more than 10%),much reduced average response time,and improved system utilization.     

嵌入式MPSoC的调试功能实现

从软件角度讨论了嵌入式MPSoC的调试功能实现．在实时操作系统中设置了调试管理部分,通过构建操作系统的调试进程实现相应的调试功能,实现的调试功能模块包括相应的调试命令集规范、输入／输出模块及执行命令模块．实时操作系统驻住在MPSoC的主控芯片上,通过将执行命令模块放置到不同的处理器核上实现调试各核及核上程序的功能．为了保证操作系统自身功能正确,首先通过硬件EJTAG模块调试操作系统本身,并开发了相应的软件RDView;然后使用操作系统的调试管理部分实现调试本机及其他处理器核上应用程序的执行状况．基于软件实现的调试管理功能以较小的内存代价,方便、有效地实现了MPSoC的调试功能．     

众核任务映射算法研究现状与发展趋势

在众核系统中,并行任务在执行前需要被映射到处理器,这一过程被称为任务映射,任务映射算法对芯片性能影响巨大,所以近年来众核任务映射算法成为研究热点。针对不同的系统架构(如二维和三维众核系统)和优化目标(如通信开销、功耗、温度等)对现有任务映射算法进行综述,并展望了任务映射算法的未来发展趋势。     

煤粉炉一次风管风粉在线监测功能在DCS系统的实现

在锅炉运行中,燃烧的稳定性是锅炉安全运行的关键,而在中间仓储式给粉系统中,对一次风管运行状态的准确判断,是锅炉安全运行关键的关键.随着DCS系统的发展,其系统容量及控制功能越来越强大,同时价格大幅下降,为一些独立的监视功能移植至DCS系统提供了客观的条件,介绍了煤粉炉一次风管风粉在线监测系统的结构原理、在锅炉运行中的作用及其功能在DCS系统实现的过程,并分析了改造的意义.