针对昆钢原有皮带秤计量流程中存在的问题,根据指定的需求重新设计和改进了皮带秤数据采集方案,并阐述其在昆钢集中计量系统中具体的实现方法。该方案通过OPC(OLE for Process Control)技术以及NPort虚拟串口将远程、分散的皮带秤计量...针对昆钢原有皮带秤计量流程中存在的问题,根据指定的需求重新设计和改进了皮带秤数据采集方案,并阐述其在昆钢集中计量系统中具体的实现方法。该方案通过OPC(OLE for Process Control)技术以及NPort虚拟串口将远程、分散的皮带秤计量数据采集到集中计量系统,并加入IP Camera对现场计量过程进行监控。实际应用表明,改进后的方案实现了皮带秤计量数据的集中采集与处理,并有效地监控皮带秤的运行状态,促进了数据的高度集成和全面共享。展开更多
Cloud computing can significantly improve efficiency in Internet utilization and data management.Several cloud applications(file sharing,backup,data up/download etc.) imply transfers of large amount of data without re...Cloud computing can significantly improve efficiency in Internet utilization and data management.Several cloud applications(file sharing,backup,data up/download etc.) imply transfers of large amount of data without real-time requirements.In several use-cases cloud-computing solutions reduce operational costs and guarantee target QoS.These solutions become critical when satellite systems are utilized,since resources are limited,network latency is huge and bandwidth costs are high.Using satellite capacity for cloud-computing bulk traffic,keeping acceptable performance of interactive applications,is very important and can limit the connectivity costs.This goal can be achieved installing in the Set Top Box(STB) a proxy agent,to differentiate traffic and assign bandwidth according to priority,leaving spare capacity to bulk cloud computing traffic.This aim is typically reached using a specific QoS architecture,adding functional blocks at network or lower layers.We propose to manage such a process at transport layer only.The endpoint proxy implements a new transport protocol called TCP Noordwijk+,introducing a flow control differentiation capability.The proxy includes TPCN+ which efficiently transfers low-priority bulk data and handles interactive data,keeping a high degree of friendliness.The outcomes of Ns-2simulations confirm applicability and good performance of the proposed solution.展开更多
文摘针对昆钢原有皮带秤计量流程中存在的问题,根据指定的需求重新设计和改进了皮带秤数据采集方案,并阐述其在昆钢集中计量系统中具体的实现方法。该方案通过OPC(OLE for Process Control)技术以及NPort虚拟串口将远程、分散的皮带秤计量数据采集到集中计量系统,并加入IP Camera对现场计量过程进行监控。实际应用表明,改进后的方案实现了皮带秤计量数据的集中采集与处理,并有效地监控皮带秤的运行状态,促进了数据的高度集成和全面共享。
文摘Cloud computing can significantly improve efficiency in Internet utilization and data management.Several cloud applications(file sharing,backup,data up/download etc.) imply transfers of large amount of data without real-time requirements.In several use-cases cloud-computing solutions reduce operational costs and guarantee target QoS.These solutions become critical when satellite systems are utilized,since resources are limited,network latency is huge and bandwidth costs are high.Using satellite capacity for cloud-computing bulk traffic,keeping acceptable performance of interactive applications,is very important and can limit the connectivity costs.This goal can be achieved installing in the Set Top Box(STB) a proxy agent,to differentiate traffic and assign bandwidth according to priority,leaving spare capacity to bulk cloud computing traffic.This aim is typically reached using a specific QoS architecture,adding functional blocks at network or lower layers.We propose to manage such a process at transport layer only.The endpoint proxy implements a new transport protocol called TCP Noordwijk+,introducing a flow control differentiation capability.The proxy includes TPCN+ which efficiently transfers low-priority bulk data and handles interactive data,keeping a high degree of friendliness.The outcomes of Ns-2simulations confirm applicability and good performance of the proposed solution.
