公开(公告)号：WO2014072733A2

公开(公告)日：2014-05-15

申请号：PCT/GB2013052947

申请日：2013-11-08

Applicant: METROIC LTD

Inventor： HURWITZ JONATHAN EPHRAIM DAVID ,  DANESH SEYED AMIR ALI

IPC: G01R15/04 ,  G01R19/02 ,  G01R21/133

CPC classification number: G01R35/04 ,  G01R15/04 ,  G01R19/0084 ,  G01R19/02 ,  G01R21/133 ,  G01R21/14

Abstract: The present invention relates to voltage measurement apparatus (470). The voltage measurement apparatus (470) comprises a potential attenuator configured to be electrically connected between first and second conductors (206,208), which are electrically coupled to a source (202). The potential attenuator comprises a first impedance (210) and a reference impedance arrangement (472) in series with each other. The reference impedance arrangement has an electrical characteristic which is changed in a known fashion. The voltage measurement apparatus (470) further comprises a processing arrangement (220,406) configured to acquire at least one signal from the reference impedance arrangement (472), the at least one signal reflecting change of the electrical characteristic in the known fashion; and to determine a voltage between the first and second conductors (206,208) in dependence on the fashion in which the electrical characteristic is changed being known and on the at least one signal. The voltage measurement apparatus is also configured such that an offset voltage is applied to the reference impedance arrangement (472).

Abstract translation: 电压测量装置（470）本发明涉及电压测量装置（470）。 电压测量设备（470）包括电位衰减器，该电位衰减器被配置为电连接在电耦合到源（202）的第一和第二导体（206,208）之间。 电位衰减器包括彼此串联的第一阻抗（210）和参考阻抗布置（472）。 参考阻抗装置具有以已知方式改变的电特性。 电压测量设备（470）还包括处理装置（220,406），其被配置为从参考阻抗装置（472）获取至少一个信号，所述至少一个信号以已知方式反映电特性的变化; 并根据其中电特性改变的方式是已知的以及在至少一个信号上确定第一和第二导体（206,208）之间的电压。 电压测量设备还被配置为使得偏置电压被施加到参考阻抗布置（472）。

公开(公告)号：WO2014071017A1

公开(公告)日：2014-05-08

申请号：PCT/US2013/067774

申请日：2013-10-31

Applicant: MARVELL WORLD TRADE LTD. ,  PRAKASH, Chandra, B. ,  BEHERA, Manas ,  UEHARA, Gregory, T.

Inventor： PRAKASH, Chandra, B. ,  BEHERA, Manas ,  UEHARA, Gregory, T.

IPC: G01R19/02

CPC classification number: G01R19/02 ,  G01R21/12 ,  H04B17/318

Abstract: New devices and methods capable of detecting a true Root-Mean-Square (RMS) power level of an analog input signal are disclosed. For example, an electronic circuit can include a squaring circuit that receives the analog input signal and processes the analog input signal so as to produce a squared-output of the analog input signal using an analog transfer function of the squaring circuit, and a square-root circuit that receives the squared-output and processes the squared-output using an analog transfer function of the square-root circuit so as to produce an analog RMS output signal representing the true RMS power level of the analog input signal.

Abstract translation: 公开了能够检测模拟输入信号的真正均方根（RMS）功率电平的新器件和方法。 例如，电子电路可以包括平方电路，其接收模拟输入信号并处理模拟输入信号，以便使用平方电路的模拟传递函数产生模拟输入信号的平方输出， 根电路，其接收平方输出并使用平方根电路的模拟传递函数处理平方输出，以产生表示模拟输入信号的真有效功率电平的模拟RMS输出信号。

公开(公告)号：WO2012078899A3

公开(公告)日：2012-10-04

申请号：PCT/US2011063988

申请日：2011-12-08

Applicant: TEXAS INSTRUMENTS INC ,  TEXAS INSTRUMENTS JAPAN ,  SILVA PAULO GUSTAVO RAYMUNDO ,  KOUWENHOVEN MICHAEL HENDRIKUS LAURENTIUS

Inventor： SILVA PAULO GUSTAVO RAYMUNDO ,  KOUWENHOVEN MICHAEL HENDRIKUS LAURENTIUS

IPC: H03M3/02 ,  H03M1/12

CPC classification number: H03M3/476 ,  G01R19/02 ,  G01R19/25 ,  G06J1/00 ,  H03M3/424

Abstract: A sigma-delta (S?) difference-of-squares LOG-RMS to digital converter" by merging a traditional S? modulator with an analog LOG-RMS to DC converter based on a difference-of- squares concept. Two basic architectures include one based on two squaring cells in the feedforward and feedback paths and a second based on a single squaring cell in the forward path, High-order S? LOG-RMS can be implemented with a loop filter containing multiple integrators and feedforward and/or feedback paths for frequency compensation. The embodiments as described allow the implementations of S? difference-of-squares LOG-RMS to DC converters with a natural digital output and a logarithmically compressed dynamic range.

Abstract translation: 通过将传统的S？调制器与基于差分方差概念的模拟LOG-RMS到DC转换器相结合，实现了Σ-Δ（S？）差分正方形LOG-RMS到数字转换器“ 一个基于前馈和反馈路径中的两个平方单元并且第二个基于正向路径中的单个平方单元，可以用包含多个积分器以及前馈和/或反馈的环路滤波器来实现高阶S-LOG-RMS 用于频率补偿的路径如上所述的实施例允许实现具有自然数字输出和对数压缩动态范围的S 2差异LOG-RMS到DC转换器。

公开(公告)号：WO2010104735A1

公开(公告)日：2010-09-16

申请号：PCT/US2010/026189

申请日：2010-03-04

Applicant: UNITED STATES DEPARTMENT OF ENERGY ,  ALLEN, Zachery, Warren ,  ZEVENBERGEN, Gary, Allen

Inventor： ALLEN, Zachery, Warren ,  ZEVENBERGEN, Gary, Allen

IPC: G01R31/14

CPC classification number: G01R19/155 ,  G01R19/02 ,  G01R19/1658 ,  G01R29/12

Abstract: A device and method for detecting ground potential rise (GPR) comprising positioning a first electrode and a second electrode at a distance from each other into the earth. The voltage of the first electrode and second electrode is attenuated by an attenuation factor creating an attenuated voltage. The true RMS voltage of the attenuated voltage is determined creating an attenuated true RMS voltage. The attenuated true RMS voltage is then multiplied by the attenuation factor creating a calculated true RMS voltage. If the calculated true RMS voltage is greater than a first predetermined voltage threshold, a first alarm is enabled at a local location. If user input is received at a remote location acknowledging the first alarm, a first alarm acknowledgment signal is transmitted. The first alarm acknowledgment signal is then received at which time the first alarm is disabled.

Abstract translation: 一种用于检测地电位上升（GPR）的装置和方法，包括将第一电极和第二电极彼此相隔一定距离定位到地球中。 第一电极和第二电极的电压被产生衰减电压的衰减因子衰减。 确定衰减电压的真有效值电压产生衰减的真有效值电压。 然后将衰减的真有效值电压乘以衰减因子，产生计算的真有效值电压。 如果所计算的真有效值电压大于第一预定电压阈值，则在本地位置启用第一警报。 如果在确认第一个报警的远程位置接收到用户输入，则发送第一个报警确认信号。 然后接收第一个报警确认信号，此时禁用第一个报警。

公开(公告)号：WO2009142903A2

公开(公告)日：2009-11-26

申请号：PCT/US2009/042750

申请日：2009-05-04

Applicant: MAXIM INTEGRATED PRODUCTS, INC.

Inventor： MEYER, Robert, G.

IPC: G01R19/02 ,  H03G3/20 ,  H04B17/00

CPC classification number: G01R19/02 ,  G01R21/01 ,  H03G3/3036 ,  H04B17/318

Abstract: Embodiments of the present invention provide systems, devices and methods for detecting the RMS value of a signal. The RMS detector uses multiple variable-gain stages and internal gain control to generate an RMS output signal based on an arbitrary signal input. This RMS detector significantly reduces the signal swings seen on a squarer within prior art RMS detectors and reduces the detector's dependency on DC offsets at low signal levels and overload errors at high signal levels. Embodiments also improve the accuracy of the RMS detector within large dynamic signal ranges by obviating the operation of a squarer in saturation or out of the squaring region. Accordingly, embodiments of the present invention are able to more accurately detect RMS values on a signal, operate over relatively higher signal ranges, and better function within different signal modulation schemes, particularly those with large peak-to-average ratios.

Abstract translation: 本发明的实施例提供用于检测信号的RMS值的系统，装置和方法。 RMS检测器使用多个可变增益级和内部增益控制，以产生基于任意信号输入的RMS输出信号。 该RMS检测器显着降低了现有技术RMS检测器中平方值上看到的信号摆幅，并降低了检测器对低信号电平下的直流偏移和高信号电平下的过载误差的依赖性。 实施例还通过消除饱和度平方仪的运行或平方区域的方式，在大动态信号范围内提高RMS检测器的精度。 因此，本发明的实施例能够更精确地检测信号上的RMS值，在相对较高的信号范围内操作，以及在不同的信号调制方案中更好的功能，特别是具有大的峰均比的那些。

公开(公告)号：WO2009027373A3

公开(公告)日：2009-05-07

申请号：PCT/EP2008061089

申请日：2008-08-25

Applicant: SIEMENS AG ,  KIENDL THOMAS

Inventor： KIENDL THOMAS

IPC: G01R19/20 ,  G01R15/18 ,  H02H1/04

CPC classification number: H02H1/046 ,  G01R15/183 ,  G01R19/02 ,  G01R19/2506

Abstract: The application discloses methods how to arithmetically calculate a corrected effective value from a real effective value of a secondary current of an iron-cored current transformer when magnetization of the iron core reaches the saturation point during generation of the secondary current from a primary current. The corrected value simulates the case that the saturation point is not reached, thus making it possible to use a smaller than normal iron-cored current transformer in measuring and/or switching devices comprising an iron-cored current transformer, e.g. in a low-voltage circuit breaker.

Abstract translation: 本申请提出的方法中，校正的均方根值可以从一个电流互感器与铁心的次级电流的实际有效值被计算为当铁心的磁化中的初级电流的二次流的产生饱和计算。 该修正值模拟未达到饱和的情况下。 这可以在测量和/或在低电压电路断路器与铁芯电流互感器的开关装置，例如，使用具有铁心比通常更小的电流互感器被利用。

公开(公告)号：WO2009027373A2

公开(公告)日：2009-03-05

申请号：PCT/EP2008/061089

申请日：2008-08-25

Applicant: SIEMENS AKTIENGESELLSCHAFT ,  KIENDL, Thomas

Inventor： KIENDL, Thomas

IPC: G01R19/20 ,  G01R15/18 ,  H02H1/04

CPC classification number: H02H1/046 ,  G01R15/183 ,  G01R19/02 ,  G01R19/2506

Abstract: Die vorliegende Anmeldung stellt Methoden vor, wie rechnerisch ein korrigierter Effektivwert aus einem realen Effektivwert eines Sekundärstroms eines Stromwandlers mit Eisenkern berechnet werden kann, wenn bei der Erzeugung des Sekundärstroms aus einem Primärstrom die Magnetisierung des Eisenkerns in Sättigung geht. Der korrigierte Wert simuliert den Fall, dass die Sättigung nicht erreicht wird. Dies kann dazu ausgenutzt werden, in Mess- und/oder Schaltgeräten mit einem Stromwandler mit Eisenkern, zum Beispiel in einem Niederspannungs-Leistungschalter, einen kleineren Stromwandler mit Eisenkern als sonst üblich zu verwenden.

Abstract translation: 本申请提出了当从一次电流产生次级电流时根据具有铁芯的电流互感器的次级电流的真实RMS值来计算校正的RMS值的方法 饱和铁芯的磁化进行。 校正值模拟未达到饱和的情况。 在铁芯电流互感器的测量和/或开关设备中，例如在低压断路器中，这可以用于使用比通常铁芯更小的电流互感器。

公开(公告)号：WO2016160452A1

公开(公告)日：2016-10-06

申请号：PCT/US2016/023767

申请日：2016-03-23

Applicant: LIEBERT CORPORATION

Inventor： MARTIN, James K. ,  BUSH, Terry D. ,  BLAIR, Charles F.

IPC: G01R19/06 ,  G01R31/02

CPC classification number: G01R19/06 ,  G01R19/02 ,  G01R31/025

Abstract: A real current meter reads current from a current probe coupled around power lines of a transformer-based UPS system coupled to a transformer having a high resistance ground with a HRG resistance and determines a real current component of the current read from the current probe.

Abstract translation: 实际电流表从耦合到具有HRG电阻的具有高电阻接地的变压器的基于变压器的UPS系统的电力线耦合的电流探头读取电流，并且确定从当前探针读取的电流的实际电流分量。

公开(公告)号：WO2015081411A1

公开(公告)日：2015-06-11

申请号：PCT/CA2013/050923

申请日：2013-12-02

Applicant: SMART ENERGY INSTRUMENTS INC.

Inventor： DIONNE, Donald Jeffrey ,  MCCANN, Jennifer Marie ,  HOWSE, Brian Leonard William

IPC: G01R19/02

CPC classification number: G01R19/02 ,  G01R21/133 ,  H03M3/378

Abstract: Described is a method and devices to determine root-mean-square of a delta- sigma modulated signal. The method includes filtering the delta-sigma modulated signal to produce a multi-bit filtered signal, delaying a copy of the delta-sigma modulated signal by a fixed number of samples to align with the filtered input, setting a sign of each multi-bit value of the multi-bit filtered signal based upon a corresponding sample value of the delayed copy of the delta-sigma modulated signal, to generate a hybrid signal, summing the hybrid signal to produce a summed signal, and determining the average of the summed signal and the square root of the average to produce a root-mean- square value.

Abstract translation: 描述了一种确定Δ-Σ调制信号的均方根的方法和装置。 该方法包括对Δ-Σ调制信号进行滤波以产生多位滤波信号，将Δ-Σ调制信号的副本延迟固定数量的采样以与滤波输入对齐，设置每个多位的符号 基于Δ-Σ调制信号的延迟副本的对应采样值的多位滤波信号的值，以产生混合信号，对混合信号求和以产生求和信号，以及确定求和信号的平均值 平均值的平方根产生均方根值。

公开(公告)号：WO2014127788A1

公开(公告)日：2014-08-28

申请号：PCT/EP2013/000542

申请日：2013-02-25

Applicant: ISABELLENHÜTTE HEUSLER GMBH & CO. KG

Inventor： MARIEN, Jan

IPC: G01R15/14 ,  G01R15/20 ,  G01R19/25

CPC classification number: G01R15/22 ,  G01R15/14 ,  G01R15/207 ,  G01R19/02 ,  G01R19/2513 ,  G01R25/00

Abstract: Die Erfindung betrifft ein Messsystem zur Messung von elektrischen Messgrößen (I1, I2, I3, U12, U23, U13) in einer elektrischen Anlage, insbesondere in einer Mittelspannungsanläge oder in einer Hochspannungsanlage, mit mehreren Sensoren (1-3, 8-10), die jeweils mindestens eine elektrische Messgröße (I1, I2, I3, U12, U23, U13) messen und ein der Messgröße (I1, I2, I3, U12, U23, U13) entsprechendes Messsignal ausgeben, sowie mit einer zentralen Auswertungseinheit (7, 14), welche die Messsignale von den Sensoren (1-3, 8-10) empfängt.

Abstract translation: 本发明涉及一种用于电气测量参数（I1，I2，I3，U12，U23，U13）在电气装置，特别是在一个Mittelspannungsanläge或在高电压设备的测量的测量系统，其具有多个传感器（1-3，8-10）， 每个所述至少一个电测量变量（I1，I2，I3，U12，U23，U13）测量并相应的测量信号的测量变量（I1，I2，I3，U12，U23，U13），以输出，和（在中央评估单元7,14 ），其从（1-3，8-10）接收传感器的测量信号。