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    • 2. 发明授权
    • System and method for managing industrial process control data streams over network links
    • 通过网络链路管理工业过程控制数据流的系统和方法
    • US08055787B2
    • 2011-11-08
    • US10938209
    • 2004-09-10
    • Hendrik Johannes VictorMikhail Avergun
    • Hendrik Johannes VictorMikhail Avergun
    • G06F15/173G06F3/00
    • H04L67/12H04L47/56H04L49/90H04L49/901H04L49/9057
    • A data acquisition service on a network node is disclosed for forwarding received process data to a process history database over a potentially slow and/or intermittent network connection. A store and forward functionality within the networked node receives incoming process data via a first network interface and forwards outgoing process data via a second network interface. The disclosed store and forward functionality includes an immediate transmission cache and a store and forward storage. The store control enters, in response to detecting an entry condition, an activated mode wherein incoming process data is directed to the store and forward storage. A read control forwards outgoing process data to the second network interface from the immediate transmission cache and store and forward storage. The read control includes at least a first configurable parameter that constrains a rate at which data retrieved from the store and forward storage is forwarded via the second network interface.
    • 公开了一种网络节点上的数据采集服务,用于通过潜在的慢速和/或间歇的网络连接将接收到的过程数据转发到过程历史数据库。 网络节点内的存储和转发功能经由第一网络接口接收传入的过程数据,并经由第二网络接口转发出去的过程数据。 所披露的存储和转发功能包括立即传输缓存和存储和转发存储。 存储控制响应于检测到入口条件而进入激活模式,其中进入的过程数据被引导到存储并转发存储。 读取控制从即时传输缓存将传出处理数据转发到第二网络接口并存储和转发存储。 读取控制包括至少第一可配置参数,该第一可配置参数限制通过第二网络接口转发从存储器检索的数据和转发存储器的速率。