公开(公告)号：US5673196A

公开(公告)日：1997-09-30

申请号：US564543

申请日：1995-11-30

申请人： Mark E. Hoffman ,  Roland J. Provost ,  Thomas Maehl ,  Gregory P. Lavoie ,  Mark J. Plis ,  David D. Elmore ,  Warren R. Germer ,  Jeffrey W. Mammen ,  Donald F. Bullock ,  Sivarama Seshu Putcha ,  Daniel A. Staver ,  Arthur C. Burt ,  Curtis W. Crittenden ,  Ellen D. Edge

发明人： Mark E. Hoffman ,  Roland J. Provost ,  Thomas Maehl ,  Gregory P. Lavoie ,  Mark J. Plis ,  David D. Elmore ,  Warren R. Germer ,  Jeffrey W. Mammen ,  Donald F. Bullock ,  Sivarama Seshu Putcha ,  Daniel A. Staver ,  Arthur C. Burt ,  Curtis W. Crittenden ,  Ellen D. Edge

IPC分类号： G01R21/133

CPC分类号： G01R21/1331

摘要： Line voltage and line current signals are sensed on a power line having at least one conducting path. The sensed line voltages and line currents are converted into a digital signal. A phase-to-neutral voltage signal and phase current signal are computed from the digital signal to thereby define a phase of the power line. An interval of orthogonality is determined from the sensed voltage and current signals, coinciding with passage of an integral number of cycles of a fundamental frequency reference signal which is computed from the computed phase-to-neutral voltage signal. A vector metering quantity is computed for the determined interval of orthogonality from the computed phase-to-neutral voltage signal and the computed phase current signal. The vector metering quantities to be computed may be identified and computed based upon an associated detent. The vector metering quantity is also computed based on an identified circuit topology.

摘要翻译： 在具有至少一个导电路径的电力线上检测线电压和线电流信号。 感测到的线路电压和线路电流被转换为数字信号。 从数字信号计算出相电压中性点电压信号和相电流信号，从而定义电力线的相位。 从感测的电压和电流信号确定正交性的间隔，其与从计算出的相电压信号计算的基频信号的整数倍的循环相一致。 根据计算的相电压信号和计算出的相电流信号，计算确定的正交间隔的向量计量量。 可以基于相关联的制动器来识别和计算要计算的矢量计量量。 也可以基于所识别的电路拓扑来计算矢量测量量。

公开(公告)号：US06822966B2

公开(公告)日：2004-11-23

申请号：US09259946

申请日：1999-03-01

申请人： Sivarama Seshu Putcha ,  Wallace Matthews

发明人： Sivarama Seshu Putcha ,  Wallace Matthews

IPC分类号： H04L1228

CPC分类号： H04L49/3081 ,  H04L49/9005 ,  H04L2012/5632 ,  H04L2012/5651 ,  H04L2012/5679 ,  H04L2012/5681 ,  H04Q11/0478

摘要： A network communication device for directing data units over a communication network includes at least one input and/or output port arranged to receive and/or transmit data units, a plurality of buffer units divided into several sub-pools, and a buffer allocator for allocating buffer units between the sub-pools. The buffer allocator is arranged to determine a priority value for each sub-pool based on quality of service for each connection established at at least one port. The buffer allocator is also arranged to determine a utilization value of the port, and arranged to allocate buffer units for each sub-pool based on the priority value and based on the utilization value. The buffer allocator creates a precedence list to ensures that a minimal number of connections, which are established at a most utilized port, will suffer data unit loss while receiving the data units.

摘要翻译： 用于通过通信网络指导数据单元的网络通信设备包括布置成接收和/或发送数据单元的至少一个输入和/或输出端口，被划分成多个子池的多个缓冲器单元和用于分配的缓冲器分配器 子池之间的缓冲单元。 缓冲器分配器被安排为基于在至少一个端口处建立的每个连接的服务质量来确定每个子池的优先级值。 缓冲器分配器还被设置为确定端口的利用值，并且被设置为基于优先级值并且基于利用率值为每个子池分配缓冲器单元。 缓冲区分配器创建一个优先级列表，以确保在最受欢迎的端口建立的最小数量的连接在接收数据单元时将遭受数据单元丢失。