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    Combined wired and wireless communications with field devices in a process control environment
    1.
    发明授权
    Combined wired and wireless communications with field devices in a process control environment 有权
    在过程控制环境中与现场设备的组合有线和无线通信

    公开(公告)号：US08676219B2

    公开(公告)日：2014-03-18

    申请号：US12100986

    申请日：2008-04-10

    申请人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    发明人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    IPC分类号： H04W40/00

    CPC分类号： G01D21/00 ,  H04W24/00 ,  H04W56/0015 ,  H04W56/002 ,  H04W80/00

    摘要： A method of providing a wireless extension to a plant automation network connected to a plurality of wired devices, each wired device performing a process control function, includes connecting a plurality of wireless devices to the plant automation network, each of the plurality of wireless devices adapted to communicate with at least another one of the plurality of wireless devices via at least one respective wireless connection; and providing access to each of the plurality of wireless devices from a host disposed in the plant automation network, such that the host accesses the plurality of wired devices and the plurality of wireless devices using a common communication scheme.

    摘要翻译： 将连接到多个有线设备的工厂自动化网络提供无线扩展的方法，每个有线设备执行过程控制功能，包括将多个无线设备连接到所述工厂自动化网络，所述多个无线设备中的每一个适配 经由至少一个相应的无线连接与所述多个无线设备中的至少另一个通信; 以及从设置在所述工厂自动化网络中的主机提供对所述多个无线设备中的每一个的访问，使得所述主机使用公共通信方案来访问所述多个有线设备和所述多个无线设备。

    SUSPENDING TRANSMISSIONS IN A WIRELESS NETWORK
    4.
    发明申请
    SUSPENDING TRANSMISSIONS IN A WIRELESS NETWORK 审中-公开
    无线网络中的暂停传输

    公开(公告)号：US20120196636A1

    公开(公告)日：2012-08-02

    申请号：US13444350

    申请日：2012-04-11

    申请人： Wallace A. Pratt, JR. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    发明人： Wallace A. Pratt, JR. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    IPC分类号： H04W72/04 ,  H04W4/06

    CPC分类号： G01D21/00 ,  H04W24/00 ,  H04W56/0015 ,  H04W56/002 ,  H04W80/00

    摘要： A method of increasing operational safety of a wireless communication network operating in a process control environment and having a plurality of network devices includes detecting a first triggering condition associated with an increased operational risk due to a wireless transmissions by at least one of the plurality of network devices, sending a suspend command to at least some of the plurality of network devices, suspending transmissions at the at least some of the plurality of network devices; and resuming transmissions at the at least some of the plurality of network devices upon occurrence of a second triggering condition.

    摘要翻译： 一种提高在过程控制环境中操作并具有多个网络设备的无线通信网络的操作安全性的方法包括：检测与由多个网络中的至少一个的无线传输引起的增加的操作风险相关联的第一触发条件 向所述多个网络设备中的至少一些发送挂起命令，在所述多个网络设备中的所述至少一些网络设备中暂停传输; 以及当发生第二触发条件时在所述多个网络设备中的所述至少一些网络设备上恢复传输。

    Routing Packets on a Network Using Directed Graphs
    6.
    发明申请
    Routing Packets on a Network Using Directed Graphs 有权
    使用定向图在网络上路由数据包

    公开(公告)号：US20090046732A1

    公开(公告)日：2009-02-19

    申请号：US12101071

    申请日：2008-04-10

    申请人： Wallace A. Pratt, JR. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall ,  Yuri Zats ,  Terrence L. Blevins

    发明人： Wallace A. Pratt, JR. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall ,  Yuri Zats ,  Terrence L. Blevins

    IPC分类号： H04L12/56

    CPC分类号： H04L12/66 ,  H04L45/22 ,  H04L45/34 ,  H04L45/42 ,  H04L45/44 ,  H04W40/22 ,  Y02D70/1222 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/22 ,  Y02D70/39

    摘要： A method of routing a data packet between a first node and a second node on a communication network includes defining a first graph through the first node and the second node and zero or more intermediate nodes, associating several nodes which belong to the communication network with the first graph, associating a first unique graph identifier with the first graph and providing at least partial definitions of the first graph and the first unique identifier to at least some of the nodes associated with the first graph. The method then sends data packet with the graph identifier from the first node, and directs the data packet to the second node via the zero or more intermediate nodes using the graph identifier. This method may include forwarding the packet to a neighbor node of an intermediate node if the intermediate node and the neighbor node are nodes associated with the first graph and if the intermediate node and the neighbor node are connected by at least one direct communication connection.

    摘要翻译： 在通信网络上的第一节点和第二节点之间路由数据分组的方法包括通过第一节点和第二节点以及零个或多个中间节点定义第一图，将属于通信网络的几个节点与 第一图，将第一唯一图标识符与第一图相关联，并且将第一图和第一唯一标识符的至少部分定义提供给与第一图相关联的至少一些节点。 然后，该方法从第一节点发送具有图形标识符的数据分组，并且使用图形标识符经由零个或多个中间节点将数据分组引导到第二节点。 如果中间节点和相邻节点是与第一图相关联的节点，以及中间节点和邻居节点是否通过至少一个直接通信连接连接，则该方法可以包括将分组转发到中间节点的邻居节点。

    Increasing Reliability and Reducing Latency in a Wireless Network
    7.
    发明申请
    Increasing Reliability and Reducing Latency in a Wireless Network 有权
    提高无线网络的可靠性和降低延迟

    公开(公告)号：US20080279204A1

    公开(公告)日：2008-11-13

    申请号：US12100927

    申请日：2008-04-10

    申请人： Wallace A. Pratt, JR. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall ,  Terrence L. Blevins

    发明人： Wallace A. Pratt, JR. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall ,  Terrence L. Blevins

    IPC分类号： H04L12/56

    CPC分类号： G01D21/00 ,  H04W24/00 ,  H04W56/0015 ,  H04W56/002 ,  H04W80/00

    摘要： A mesh communication network for use in, for example, process control plants includes a plurality of network devices transmitting and receiving data according to a network schedule defined as a set of concurrent overlapping superframes, and along a set of graphs defining communication paths between pairs of network devices. A network manager residing in or outside the communication network develops a routing scheme for the network by analyzing the topology of the network and defining a set of graphs for use in routing or transmitting data between various nodes of the network, each graph including one or more communication paths between pairs of network devices. Concurrently or consequently, the network manager defines the network schedule in view of at least transmission requirements, power availability, and signal quality at each network device. If desired, the network manager may begin to define the network schedule upon completing the definition of the graphs of the communication network, so that the network manager may define the network schedule in view both the defined graphs and the transmission, power, etc. parameters associated with each network device.

    摘要翻译： 用于例如过程控制设备的网状通信网络包括多个网络设备，其根据定义为一组并发重叠超帧的网络调度，以及沿着一组图形定义通信路径 网络设备。 驻留在通信网络中或外部的网络管理器通过分析网络的拓扑并定义用于在网络的各个节点之间路由或传输数据的图形集合来开发网络的路由方案，每个图包括一个或多个 网络设备对之间的通信路径。 鉴于至少传输要求，功率可用性和每个网络设备的信号质量，网络管理器同时或因此定义网络调度。 如果需要，网络管理器可以在完成通信网络的图形的定义时开始定义网络调度，使得网络管理员可以在定义的图形和传输，功率等参数中定义网络调度 与每个网络设备相关联。

    Efficient addressing in wireless hart protocol
    8.
    发明授权
    Efficient addressing in wireless hart protocol 有权
    无线哈特协议中的高效寻址

    公开(公告)号：US08570922B2

    公开(公告)日：2013-10-29

    申请号：US12101043

    申请日：2008-04-10

    申请人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    发明人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    IPC分类号： H04W4/00 ,  H04L12/28

    CPC分类号： H04W84/10 ,  H04L12/66 ,  H04L29/12254 ,  H04L61/2038 ,  H04L67/12 ,  H04W8/26 ,  H04W92/10

    摘要： A method of providing a wireless extension to a wired protocol for transferring data to and from a field device operating in a process control environment via a wired connection, wherein the wired protocol and the wireless extension to the wired protocol have at least one protocol layer in common includes associating a unique address consistent with an addressing scheme of the wired protocol with each of a plurality of wireless devices operating in the process control environment and forming a wireless network, such that a data packet is routed between two of the plurality of wireless devices based on the unique address; associating a network identifier with the plurality of wireless devices; forming, for each of the plurality of wireless devices, a global address including the respective unique address and the network identifier in accordance with a second addressing scheme; and providing access to an external host operating outside the wireless network to each of the plurality of wireless devices based on the global address associated with the wireless device specified at the external host.

    摘要翻译： 一种向有线协议提供无线扩展的方法，用于经由有线连接向在过程控制环境中操作的现场设备传送数据和从现场设备传送数据，其中有线协议和对有线协议的无线扩展具有至少一个协议层 通常包括将与有线协议的寻址方案一致的唯一地址与在过程控制环境中操作的多个无线设备中的每一个相关联并且形成无线网络，使得数据分组在多个无线设备中的两个之间路由 基于独特的地址; 将网络标识符与所述多个无线设备相关联; 根据第二寻址方案，为所述多个无线设备中的每一个形成包括相应的唯一地址和所述网络标识符的全局地址; 以及基于与在所述外部主机指定的所述无线设备相关联的全球地址，向所述多个无线设备中的每一个提供对在所述无线网络之外运行的外部主机的访问。

    Scheduling communication frames in a wireless network
    9.
    发明授权
    Scheduling communication frames in a wireless network 有权
    在无线网络中调度通信帧

    公开(公告)号：US08356431B2

    公开(公告)日：2013-01-22

    申请号：US12101074

    申请日：2008-04-10

    申请人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall ,  Yuri Zats ,  Terrence L. Blevins

    发明人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall ,  Yuri Zats ,  Terrence L. Blevins

    IPC分类号： H04J3/00

    CPC分类号： H04W84/18 ,  H04J4/00 ,  H04W72/1205

    摘要： A method of scheduling communications in a multi-node wireless mesh network which has a first network device and a second network device includes defining a communication timeslot of a predetermined duration, defining a first superframe having a repeating superframe cycle including a first number of the communication timeslots, defining a second superframe having a repeating superframe cycle including a second number of the communication timeslots, aligning the first superframe with the second superframe, so that one of the timeslots of the first superframe begins simultaneously with one of the timeslots of the second superframe, and associating the first and the second superframes with a network schedule, so that the first network device and the second network device transmit data according to the network schedule.

    摘要翻译： 一种在具有第一网络设备和第二网络设备的多节点无线网状网络中调度通信的方法包括定义预定持续时间的通信时隙，定义具有重复超帧周期的第一超帧，所述重复超帧周期包括第一数量的通信 定义具有包括第二数量的通信时隙的重复超帧周期的第二超帧，使第一超帧与第二超帧对准，使得第一超帧的时隙之一与第二超帧的时隙之一同时开始 并且将第一和第二超帧与网络调度相关联，使得第一网络设备和第二网络设备根据网络调度来发送数据。

    Suspending transmissions in a wireless network
    10.
    发明授权
    Suspending transmissions in a wireless network 有权
    在无线网络中暂停传输

    公开(公告)号：US08169974B2

    公开(公告)日：2012-05-01

    申请号：US12101011

    申请日：2008-04-10

    申请人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    发明人： Wallace A. Pratt, Jr. ,  Mark J. Nixon ,  Eric D. Rotvold ,  Robin S. Pramanik ,  Tomas P. Lennvall

    IPC分类号： H04W4/00 ,  H04J3/14 ,  H04J3/00 ,  H04J3/06

    CPC分类号： G01D21/00 ,  H04W24/00 ,  H04W56/0015 ,  H04W56/002 ,  H04W80/00

    摘要： A method of increasing operational safety of a wireless communication network operating in a process control environment and having a plurality of network devices includes detecting a first triggering condition associated with an increased operational risk due to a wireless transmissions by at least one of the plurality of network devices, sending a suspend command to at least some of the plurality of network devices, suspending transmissions at the at least some of the plurality of network devices; and resuming transmissions at the at least some of the plurality of network devices upon occurrence of a second triggering condition.

    摘要翻译： 一种提高在过程控制环境中操作并具有多个网络设备的无线通信网络的操作安全性的方法包括：检测与由多个网络中的至少一个的无线传输引起的增加的操作风险相关联的第一触发条件 向所述多个网络设备中的至少一些发送挂起命令，在所述多个网络设备中的所述至少一些网络设备中暂停传输; 以及当发生第二触发条件时在所述多个网络设备中的所述至少一些网络设备上恢复传输。