公开(公告)号：US06807495B2

公开(公告)日：2004-10-19

申请号：US10373029

申请日：2003-02-26

申请人： Wolfgang Wimmer

发明人： Wolfgang Wimmer

IPC分类号： G01R1900

CPC分类号： H02H3/044

摘要： The invention relates to a method, a computer program product, a computer program and a device (20) for the plausibility checking of voltage transformers (8) in an electrical switchgear (1) as well as a switchgear (1) with such a device (20). According to the invention, a topological sub-area (1a; 1b) with several galvanically connected voltage transformers (8) is recorded for an instantaneous topology of the switchgear (1), groups of voltage transformers (8) with the same measured signals are identified and, if more than one group is present, an indication or alarm signal is generated by the substation control system (2). Amongst other things, exemplary embodiments relate to: Criteria for the production of warning or alarm messages for problematic voltage transformers (8) and/or sub-areas (1a; 1b); presentation of the results of the plausibility test; coordination of the plausibility test with switching operations. Advantages are, amongst others: Method independent of complexity and operating state of the switchgear (1); dynamic tracking of the topology; high meaningfulness of the plausibility test; and use of measured voltage values already available in the control system (2).

摘要翻译： 本发明涉及一种方法，计算机程序产品，计算机程序和用于电气开关设备（1）中的电压互感器（8）的合理性检查的装置（20）以及具有这种装置的开关设备 （20）。 根据本发明，为了开关设备（1）的瞬时拓扑结构，记录了具有多个电流连接的电压互感器（8）的拓扑子区域（1a; 1b），具有相同测量信号的电压互感器组（8） 并且如果存在多于一个组，则由变电站控制系统（2）产生指示或报警信号。 其中，示例性实施例涉及：用于产生用于有问题的电压互感器（8）和/或子区域（1a; 1b）的警告或警报消息的标准; 呈现合理性检验结果; 协调合理性测试与切换操作。 优点在于：独立于开关柜（1）的复杂性和工作状态的方法; 动态跟踪拓扑; 合理性测试的高度意义; 并使用已经在控制系统（2）中可用的测量电压值。

公开(公告)号：US06803794B2

公开(公告)日：2004-10-12

申请号：US10375563

申请日：2003-02-26

申请人： Mark V. Martin ,  John J. Drab

发明人： Mark V. Martin ,  John J. Drab

IPC分类号： G01R1900

CPC分类号： G11C7/067 ,  G01R27/2605 ,  G11C11/22

摘要： A differential capacitance sense amplifier capable of measuring a small difference-signal capacitance in the presence of circuit mismatches and large unequal interconnect capacitances. The sense amplifier includes three sections: a common-mode section applies a ‘read’ voltage to two capacitors in a manner that rejects unequal interconnect capacitance, a difference-mode section generates a signal proportional to the capacitance difference between the two capacitors, and an offset-canceling section compensates for circuit mismatches in the difference-mode section. The amplifier can be adapted for use as a sense amplifier for a ferroelectric differential capacitance memory unit.

摘要翻译： 一种差分电容读出放大器，能够在存在电路失配和大的不相等互连电容的情况下测量小的差分信号电容。 感测放大器包括三个部分：共模部分以拒绝不相等的互连电容的方式对两个电容器施加“读取”电压，差模部分产生与两个电容器之间的电容差成比例的信号， 偏移消除部分补偿差模式部分中的电路不匹配。 放大器可以适用于铁电差动电容存储单元的读出放大器。

公开(公告)号：US06798183B2

公开(公告)日：2004-09-28

申请号：US10164918

申请日：2002-06-04

申请人： Thomas K. Bohley ,  Thomas Doumas ,  Mark Keisling

发明人： Thomas K. Bohley ,  Thomas Doumas ,  Mark Keisling

IPC分类号： G01R1900

CPC分类号： H04M3/26 ,  G01R31/021 ,  G01R31/023 ,  H04L43/50 ,  H04M3/085

摘要： A test device for assisting in locating a cable efficiently provides both tone and link pulses simultaneously to a cable under test. The link pulses are alternated between transmit and receive pairs on the cable.

摘要翻译： 用于辅助定位电缆的测试设备有效地将音调和链路脉冲同时提供给被测电缆。 链路脉冲在电缆上的发送和接收对之间交替。

公开(公告)号：US06791368B2

公开(公告)日：2004-09-14

申请号：US10639046

申请日：2003-08-12

申请人： Guang-Nan Tzeng ,  Tien Tzu Chen

发明人： Guang-Nan Tzeng ,  Tien Tzu Chen

IPC分类号： G01R1900

CPC分类号： H03K17/0822 ,  G01R19/0092 ,  H03F3/345 ,  H03K5/08 ,  H03K5/2481 ,  H03K2217/0036

摘要： The present invention discloses a current sensing circuit and method of a high-speed driving stage, which comprises an input stage, a level converting unit, a feedback unit, a current mirror unit and a current shunting unit. The current sensing circuit is capable of linearly detecting the output current of the driving stage transistors, and directly condensing the detected current to an appropriate value using the geometric ratio of the transistors, so as to facilitate the subsequent signal processing circuit to use it for control purposes.

摘要翻译： 本发明公开了一种高速驱动级的电流感测电路和方法，包括输入级，电平转换单元，反馈单元，电流镜单元和电流分流单元。 电流检测电路能够线性检测驱动级晶体管的输出电流，并使用晶体管的几何比直接将检测到的电流结合到适当的值，以便随后的信号处理电路用于控制 目的

公开(公告)号：US06735537B2

公开(公告)日：2004-05-11

申请号：US10099814

申请日：2002-03-15

申请人： Guang Liu ,  Alexander Kurnia ,  Ronan De'Larminat

发明人： Guang Liu ,  Alexander Kurnia ,  Ronan De'Larminat

IPC分类号： G01R1900

CPC分类号： H02M7/53873 ,  G01R19/0092 ,  H02M7/5395 ,  H02M2001/0009

摘要： A method for measuring the current in each phase of a three-phase motor (26) by the sensor (32), the motor (26) being controlled by a plurality of switching devices (S1-S6) that receive pulse width modulation signals from a controller (34). In one embodiment, a first and second sampling window (t1 and t2) are monitored. When both the first and second sampling windows (t1 and t2) are less than a minimum sampling window (mw), the voltage pulse trains associated with the highest output (V_h) and the lowest output (V_l) are shifted to form a first modified sampling window (t1′) and a modified second sampling window (t2′). When the first sampling window (t1) is less than the minimum sampling window and the second sampling window (t2) is greater than the minimum sampling window (mw), then the voltage pulse train associated with the highest output (V_h) and/or the middle output (V_m) may be shifted to form the first and second modified sampling windows (t1′ and t2′). When the first sampling window (t1) is greater than the minimum sampling window (mw) and the second sampling window (t2) is less than the minimum sampling window (mw), then the voltage pulse train associated with the lowest output (V_l) and/or the middle output (V_m) is shifted to form the first and second modified sampling windows (t1′ and t2′). The method may then sample a first current and a second current during the first and second modified sampling windows (t1′ and t2′), respectively. The third current may be calculated based on the sampling of the first and second currents.

摘要翻译： 一种用于通过传感器（32）测量三相电动机（26）的每相中的电流的方法，电动机（26）由多个开关装置（S1-S6）控制，该开关装置接收来自 控制器（34）。 在一个实施例中，监视第一和第二采样窗口（t1和t2）。 当第一和第二采样窗口（t1和t2）都小于最小采样窗口（mw）时，与最高输出（V_h）和最低输出（V_1）相关联的电压脉冲串被移位以形成第一修改 采样窗口（t1'）和修改的第二采样窗口（t2'）。 当第一采样窗口（t1）小于最小采样窗口并且第二采样窗口（t2）大于最小采样窗口（mw）时，与最高输出（V_h）和/或 中间输出（V_m）可以移位以形成第一和第二修改采样窗口（t1'和t2'）。 当第一采样窗口（t1）大于最小采样窗口（mw）并且第二采样窗口（t2）小于最小采样窗口（mw）时，与最低输出（V_l）相关联的电压脉冲串 和/或中间输出（V_m）被移位以形成第一和第二修改采样窗口（t1'和t2'）。 然后，该方法可以在第一和第二修改采样窗口（t1'和t2'）期间分别采样第一电流和第二电流。 可以基于第一和第二电流的采样来计算第三电流。

公开(公告)号：US06718273B1

公开(公告)日：2004-04-06

申请号：US09598556

申请日：2000-06-21

申请人： Harald Tschentscher ,  Martin Eisenhardt

发明人： Harald Tschentscher ,  Martin Eisenhardt

IPC分类号： G01R1900

CPC分类号： H02P21/06

摘要： A method for generating manipulated variables for the direct-axis and cross voltage, respectively, to represent the flux-forming current ID and torque-forming current IQ in field-oriented control of asynchronous machines, taking into account the stator voltage drop and steady-state internal voltage. The steady-state internal voltage is calculated on the basis of reference variables of the currents.

摘要翻译： 一种用于分别产生直轴和交叉电压的操纵变量的方法，用于表示异步电机的磁场定向控制中的磁通形成电流ID和转矩形成电流IQ，同时考虑到定子电压降和稳定电压， 状态内部电压。 基于电流的参考变量计算稳态内部电压。

公开(公告)号：US06717444B2

公开(公告)日：2004-04-06

申请号：US10259489

申请日：2002-09-30

申请人： Hsiao-Ming Lin ,  Nien-Chao Yang

发明人： Hsiao-Ming Lin ,  Nien-Chao Yang

IPC分类号： G01R1900

CPC分类号： H03F3/345 ,  G11C7/067 ,  G11C2207/063 ,  H03K3/012 ,  H03K3/356156

摘要： A low power latch sense amplifier for electrically being coupled to a bit line of a memory cell array is disclosed. The low power latch sense amplifier comprises a common gate sense amplifier and an activated latch register. The common gate sense amplifier comprising a current source and a biased metal-oxide semiconductor is applied for sensing the current of the bit line. The current source and the biased MOS are coupled to a first node, and the common gate sense amplifier outputs a sensing signal at the first node. The activated latch register comprises a first clock signal-synchronized inverter which includes a first inverter and a first switch. The first inverter responds to the sensing signal, and the first inverter outputs a first inverter output signal. The first switch is controlled by a first set of control signal, and the first inverter output signal is corresponding to the sensing signal when the first switch is turned on.

摘要翻译： 公开了一种用于电耦合到存储单元阵列的位线的低功率锁存读出放大器。 低功率锁存读出放大器包括公共栅极读出放大器和激活的锁存寄存器。 施加包括电流源和偏置的金属氧化物半导体的公共栅极读出放大器用于感测位线的电流。 电流源和偏置MOS耦合到第一节点，并且公共栅极读出放大器在第一节点处输出感测信号。 激活的锁存寄存器包括第一时钟信号同步的逆变器，其包括第一反相器和第一开关。 第一个反相器响应感测信号，第一个反相器输出第一个反相器输出信号。 第一开关由第一组控制信号控制，当第一开关接通时，第一反相器输出信号对应于感测信号。

公开(公告)号：US06674276B2

公开(公告)日：2004-01-06

申请号：US09811943

申请日：2001-03-19

申请人： Wayne D. Morgan ,  Chris W. Martin ,  Thomas M. Luebke ,  David L. Wiesemann

发明人： Wayne D. Morgan ,  Chris W. Martin ,  Thomas M. Luebke ,  David L. Wiesemann

IPC分类号： G01R1900

CPC分类号： G01N27/24 ,  G01V3/15

摘要： A housing for a subsurface object locator has a bubble level vial for leveling surfaces using the housing and a scribe tip for marking a surface being probed with the locator.

摘要翻译： 用于地下物体定位器的壳体具有用于使用壳体调平表面的气泡水平的小瓶和用于标记被定位器探测的表面的划痕末端。

公开(公告)号：US06657424B1

公开(公告)日：2003-12-02

申请号：US09556350

申请日：2000-04-24

申请人： John T. Voisine ,  John P. Junker

发明人： John T. Voisine ,  John P. Junker

IPC分类号： G01R1900

CPC分类号： G01R21/133

摘要： An electricity meter includes a current sensor, an analog to digital (A/D) converter coupled to the current sensor, and a processor coupled to the A/D converter. The current sensor and the A/D converter cooperate to generate a digital current signal having a waveform representative of the current waveform on the power lines connected to the electricity meter. The processor is operable to analyze a digital current waveform signal produced by the current sensor and A/D converter to detect a rectified (DC) load. In particular, the processor perform analysis on the digital current signal to generate a peak positive current value and a peak negative current value, and then detect the presence of a rectified load coupled to the power network based on said peak positive current value and said peak negative current value.

摘要翻译： 电表包括电流传感器，耦合到电流传感器的模数（A / D）转换器以及耦合到A / D转换器的处理器。 电流传感器和A / D转换器协同产生具有代表连接到电表的电力线上的电流波形的波形的数字电流信号。 处理器可操作以分析由电流传感器和A / D转换器产生的数字电流波形信号，以检测整流（DC）负载。 特别地，处理器对数字电流信号执行分析以产生峰值正电流值和峰值负电流值，然后基于所述峰值正电流值和所述峰值来检测耦合到电力网络的整流负载的存在 负电流值。

公开(公告)号：US06650147B2

公开(公告)日：2003-11-18

申请号：US09249833

申请日：1999-02-12

申请人： Antonino Conte ,  Nicolas Demange

发明人： Antonino Conte ,  Nicolas Demange

IPC分类号： G01R1900

CPC分类号： G11C7/067 ,  G11C16/26

摘要： A sense amplifier for a memory includes a comparator and a bit line polarization circuit. The comparator receives a first signal representative of a current flowing through a memory cell and a second signal representative of a reference current. Additionally, the comparator includes a stage in a common source configuration and an active load for the stage, and the bit line polarization circuit provides a polarization voltage level that is independent of the supply voltage level. In a preferred embodiment, the sense amplifier also includes an output stage that improves switching time at high supply voltages.

摘要翻译： 用于存储器的读出放大器包括比较器和位线极化电路。 比较器接收表示流过存储器单元的电流的第一信号和表示参考电流的第二信号。 此外，比较器包括一个共同的源配置级和该级的有源负载，并且位线极化电路提供独立于电源电压电平的极化电压电平。 在优选实施例中，读出放大器还包括提高高电源电压下的开关时间的输出级。