公开(公告)号：US07498804B1

公开(公告)日：2009-03-03

申请号：US11581708

申请日：2006-10-16

申请人： Kang Li ,  Dwayne Scott Bontrager

发明人： Kang Li ,  Dwayne Scott Bontrager

IPC分类号： G01N27/72

CPC分类号： G01R15/202 ,  G01R15/185

摘要： A current measurement system includes a magnetic core having an inside area through which a conductor carrying current to be measured extends. A measurement winding is wound on the magnetic core. A voltage source couples to the measurement winding to generate current through the measurement winding. A gap of low permeability material is disposed in the magnetic core. A sensing device is positioned in the gap, wherein the sensing device generates a control signal having one of a first state and a second state based on a strength and a direction of a magnetic field in the gap.

摘要翻译： 电流测量系统包括具有内部区域的磁芯，通过该内部区域，待测量的导体承载电流延伸。 测量绕组缠绕在磁芯上。 电压源耦合到测量绕组以产生通过测量绕组的电流。 低磁导率材料的间隙设置在磁芯中。 感测装置位于间隙中，其中感测装置基于间隙中的磁场的强度和方向产生具有第一状态和第二状态之一的控制信号。

公开(公告)号：US07372354B2

公开(公告)日：2008-05-13

申请号：US11299901

申请日：2005-12-13

申请人： Jan Raagaard Petersen

发明人： Jan Raagaard Petersen

IPC分类号： H01F27/28

CPC分类号： G01R15/185 ,  G01R19/20

摘要： A detector circuit to be used for measuring current and including a main current transformer and two substantially identical auxiliary current transformers, where magnetomotive forces are induced by a main current, said magnetomotive forces being counteracted by magnetomotive forces induced by a compensating current (i4) in a compensating winding (L4) across at least two annular cores (2, 3) at the same time as the two auxiliary current transformers are magnetized in antiphase by means of a modulation signal, said circuit further including a synchronous rectifier for providing an adjustment signal for the compensating current (i4). According to the invention, the compensating winding (L4) is formed by a so-called “pilgrim winding”. A pilgrim winding results from one section being wound at a time, and it presents the property that the potential difference between the individual winding layers is smaller than in connection with conventionally wound transformers where one layer is wound at a time in the longitudinal direction of the entire core. As a result the undesirable capacitive currents between the windings have been significantly reduced, viz. the so-called neighbouring effect. In other words, the parasitic capacities between the windings have been reduced. In addition it turned out that the use of such windings implies that the undesirable resonances are elevated to such an extent that they no longer interfere with the measuring procedure.

摘要翻译： 用于测量电流并包括主电流互感器的检测器电路和两个基本上相同的辅助电流互感器，其中由主电流引起磁动势，所述磁动势由补偿电流引起的磁动势抵消（i _{4S）的调整信号的同步整流器。 根据本发明，补偿绕组（L 4）由所谓的“朝圣者绕组”形成。 一次缠绕的朝圣者绕组产生，并且具有如下性质：各绕组层之间的电位差小于传统绕组的变压器，其中一层沿着 整个核心 结果，绕组之间的不期望的电容电流已被显着地减小，即 所谓的邻近效应。 换句话说，绕组之间的寄生电容已经降低。 此外，证明使用这种绕组意味着不期望的共振被提升到这样的程度，使得它们不再干扰测量过程。}

公开(公告)号：US20080054898A1

公开(公告)日：2008-03-06

申请号：US11879046

申请日：2007-07-13

申请人： Christian Hausperger ,  Edgar Kindler ,  Bernhard Rollgen

发明人： Christian Hausperger ,  Edgar Kindler ,  Bernhard Rollgen

IPC分类号： G01R19/00 ,  G01R33/02

CPC分类号： G01R15/207 ,  G01R15/185

摘要： A device for measuring a current flowing in an electrical conductor that has a magnetic circuit coupled to an electrical conductor. The magnetic circuit has an air gap and a magnetic field sensitive component disposed in the air gap to measure a magnetic field generated by the electrical conductor. At least one control core with a control winding is included to control an effective length of the air gap when the control winding is energized. The device also has a compensation coil to magnetize the magnetic circuit.

摘要翻译： 一种用于测量在具有耦合到电导体的磁路的电导体中流动的电流的装置。 磁路具有气隙和设置在气隙中的磁场敏感部件，以测量由电导体产生的磁场。 包括具有控制绕组的至少一个控制铁心以在控制绕组通电时控制气隙的有效长度。 该器件还具有用于磁化磁路的补偿线圈。

公开(公告)号：US20070164727A1

公开(公告)日：2007-07-19

申请号：US11653627

申请日：2007-01-16

申请人： Robert Racz ,  Samuel Huber ,  Markus Gloor

发明人： Robert Racz ,  Samuel Huber ,  Markus Gloor

IPC分类号： G01R11/32

CPC分类号： G01R15/207 ,  G01R15/185 ,  G01R15/202

摘要： A device for measuring current comprises a magnetic field sensor (2) for measuring the magnetic field produced by a current I flowing through a current conductor (1) and a yoke (3) of a magnetic material with a relative permeability of at least 100. The magnetic field sensor (2) preferably comprises a semiconductor chip with at least one Hall element and an electronic circuit for the operation of the Hall element. Two magnetic field concentrators (7, 8) separated by an air gap (6) are arranged on a surface of the semiconductor chip such that field lines (9) of the magnetic field (see FIG. 3) that issue from the first magnetic field concentrator (7) in the vicinity of the air gap (6) and impinge on the second magnetic field concentrator (8) in the vicinity of the air gap (6) pass through the at least one Hall element. The yoke (3) consists of an oblong piece of sheet metal or a laminate of sheet metals with two ends (10, 11) that has been brought by bending into a form with which the front sides of the ends (10, 11) of the yoke (3) lie opposite each other and are separated by an air gap (14). The ends (10, 11) of the yoke (3) are tapered so that a width of the ends of the yoke is less than a width of the yoke.

摘要翻译： 用于测量电流的装置包括用于测量由流过电流导体（1）的电流I和相对磁导率至少为100的磁性材料的磁轭（3）产生的磁场的磁场传感器（2）。 磁场传感器（2）优选地包括具有至少一个霍尔元件的半导体芯片和用于霍尔元件的操作的电子电路。 通过气隙（6）分离的两个磁场集中器（7,8）布置在半导体芯片的表面上，使得从第一磁场发出的磁场（见图3）的场线（9） 集中器（7）在气隙（6）附近并撞击在气隙（6）附近的第二磁场聚集器（8）通过至少一个霍尔元件。 磁轭（3）由长方形的金属片或具有两端（10,11）的金属板的层叠体构成，所述两端（10,11）通过弯曲成使得端部（10,11）的前侧 轭（3）彼此相对并由气隙（14）分开。 磁轭（3）的端部（10,11）是锥形的，使得磁轭的端部的宽度小于磁轭的宽度。

公开(公告)号：US20060244437A1

公开(公告)日：2006-11-02

申请号：US10568435

申请日：2004-08-11

申请人： Michel Suquet

发明人： Michel Suquet

IPC分类号： G01R15/18

CPC分类号： G01R15/185 ,  G01R1/18 ,  G01R15/20

摘要： The device for measuring the intensity (1) of a strong current passing through a wire (1) comprises a magnetic sensor (2) in the form of a loop surrounding the wire (1), and a turn (3) of conductive material surrounding the wire (1) conducting a high-frequency counter-current, the intensity of which is adjusted to cancel the magnetic field (H) is characterized in that the turn (3) of conductive material is in short circuit and surrounds the magnetic sensor (2).

摘要翻译： 用于测量穿过线（1）的强电流的强度（1）的装置包括围绕线（1）的环形形式的磁传感器（2）和围绕 其强度被调整为抵消磁场（H）的高频逆流的导线（1）的特征在于，导电材料的转向（3）短路并且包围磁性传感器（ 2）。

公开(公告)号：US20060192550A1

公开(公告)日：2006-08-31

申请号：US11172732

申请日：2005-06-30

申请人： David Sandquist ,  Andrzej Peczalski ,  Dale Bermdt

发明人： David Sandquist ,  Andrzej Peczalski ,  Dale Bermdt

IPC分类号： G01R15/20 ,  G01R15/18

CPC分类号： G01R15/185 ,  G01R15/183

摘要： A sensor device primarily for sensing current in a primary source, including a primary conductor forming at least one winding on a magnetic material toroid. A secondary source of electrical current from a signal having a frequency f1 forms a plurality of winding on the toroid. An output reader measures the instantaneous loading of the signal passing through the plurality of windings as a function of the primary source current. The device includes a resistor form measuring the resulting voltage or current instantaneous loading for detecting said resulting signal at the frequency twice that of f1 by demodulation of the signal to capture the resulting pulses, the polarity of the primary magnetic field being determined by the polarity of the resulting pulse aligned either at the rising or trailing slope of the applied signal at frequency f1. The primary source of electrical current is AC or DC current.

摘要翻译： 主要用于感测主要源中的电流的传感器装置，包括在磁性材料环形环上形成至少一个绕组的主导体。 来自具有频率f 1的信号的二次电流源在环形线圈上形成多个绕组。 输出读取器测量作为主要源电流的函数的通过多个绕组的信号的瞬时负载。 该装置包括测量所得到的电压或电流瞬时负载的电阻器形式，用于通过解调该信号来捕获所得到的脉冲，以f 2的两倍的频率检测所得到的信号，一次磁场的极性由极性决定 所产生的脉冲在施加的信号的频率f 1的上升或下降斜率下对准。 电流的主要来源是交流或直流电流。

公开(公告)号：US20060043960A1

公开(公告)日：2006-03-02

申请号：US11185750

申请日：2005-07-21

申请人： Tomoki Itoh ,  Masato Ishihara

发明人： Tomoki Itoh ,  Masato Ishihara

IPC分类号： G01R33/00

CPC分类号： G01R15/202 ,  G01R15/185

摘要： A current sensor for measuring an electric current flowing through a current bus bar includes: a magnetic core with an opening, through which the current bus bar passes with a predetermined interval; and a first magnetic sensor for detecting magnetic flux density in the magnetic core, the magnetic flux density generated by the electric current passing through the current bas bar. The magnetic core has a first gap and a second gap. The first magnetic sensor is disposed in the first gap. The second gap is capable of preventing magnetic saturation of the magnetic core.

摘要翻译： 用于测量流过电流母线的电流的电流传感器包括：具有开口的磁芯，电流母线通过该磁芯以预定的间隔通过; 以及用于检测磁芯中的磁通密度的第一磁传感器，由通过电流条的电流产生的磁通密度。 磁芯具有第一间隙和第二间隙。 第一磁传感器设置在第一间隙中。 第二间隙能够防止磁芯的磁饱和。

公开(公告)号：US06998840B2

公开(公告)日：2006-02-14

申请号：US10228948

申请日：2002-08-28

申请人： Won-youl Choi ,  Keon-yang Park ,  Byeong-cheon Koh ,  Myung-sam Kang ,  Kyung-won Na ,  Sang-on Choi

发明人： Won-youl Choi ,  Keon-yang Park ,  Byeong-cheon Koh ,  Myung-sam Kang ,  Kyung-won Na ,  Sang-on Choi

IPC分类号： G01R33/04

CPC分类号： G01R33/05 ,  G01R15/185 ,  G01R33/04 ,  Y10T29/49073 ,  Y10T29/49075

摘要： A fluxgate sensor integrated in a printed circuit board. The fluxgate sensor has soft magnetic cores having a lower core and an upper core mounted on the lower core, for forming a closed magnetic path on a printed circuit board, an excitation coil formed as a metal film, alternately winding the upper and the lower soft magnetic cores substantially in a number ‘8’ pattern, and a pick-up coil formed as a metal film, having a structure of winding the upper and the lower soft magnetic cores substantially in a solenoid pattern, the pick-up coil being placed on the same plane as an external contour of the excitation coil.

摘要翻译： 集成在印刷电路板中的磁通门传感器。 磁通门传感器具有软磁芯，其具有安装在下芯上的下芯和上芯，用于在印刷电路板上形成闭合磁路，形成为金属膜的励磁线圈，交替地卷绕上软和下软 基本上为“8”图案的磁芯和形成为金属膜的拾取线圈，其具有将上下软磁芯基本上卷绕在螺线管图案中的结构，拾取线圈被放置在 与激励线圈的外部轮廓相同的平面。

公开(公告)号：US06897758B1

公开(公告)日：2005-05-24

申请号：US09787778

申请日：1999-09-22

申请人： Ulrich Baumgaertl ,  Henry Franke ,  Holger Hochgraef ,  Wolfgang Roehl

发明人： Ulrich Baumgaertl ,  Henry Franke ,  Holger Hochgraef ,  Wolfgang Roehl

IPC分类号： G01R15/20 ,  G01R15/18 ,  H01F17/06

CPC分类号： G01R15/185

摘要： The circuit contains a primary coil on the core (2) of a magnetic circuit with an air gap and switchable into a line carrying the measurement current. A secondary compensation coil (5), with an order higher winding count and mounted on the core, is connected to the output of a controllable compensation current source (6). The output of a Hall element (11) in the air gap is connected to the control input of the compensation source.A further coil (14) on the core is connected to an additional controllable current generator (15) whose control input (16) is driven by a measurement device (13) for the compensation current via a control and evaluation circuit (17).USE/ADVANTAGE—Measuring a.c. and d.c. Can be produced at low cost and all drift occurring during measurement can be compensated.

摘要翻译： 该电路在磁芯的芯（2）上包含一个具有气隙并可转换成承载测量电流的线路的初级线圈。 具有更高绕组数并安装在芯上的次级补偿线圈（5）连接到可控补偿电流源（6）的输出端。 气隙中的霍尔元件（11）的输出连接到补偿源的控制输入。 核心上的另一线圈（14）连接到附加的可控电流发生器（15），其控制输入（16）由用于经由控制和评估电路（17）的补偿电流的测量装置（13）驱动。 使用/优势测量a.c. 和d.c. 可以以低成本生产，并且可以补偿测量期间发生的所有漂移。

公开(公告)号：US06885183B2

公开(公告)日：2005-04-26

申请号：US10786485

申请日：2004-02-25

申请人： Katsuhisa Kato

发明人： Katsuhisa Kato

IPC分类号： G01R15/18 ,  G01R19/00 ,  G01R33/00

CPC分类号： G01R15/185 ,  G01R15/181

摘要： A current probe suitable for detecting a large current from DC to high frequency has first and second current detecting means. The first current detecting means detects a current under test from DC to a predetermined intermediate frequency band. It has an orthogonal flux gate element, an induced voltage detecting circuit 46 for detecting an induced voltage of the orthogonal fluxgate element, and a feedback coil 50 receiving the output voltage of the induced voltage detecting circuit 46 for generating magnetic flux to cancel the magnetic flux generated by the current under test. The second current detecting means has a Rogowski coil 12 and an integration circuit and detects said current under test higher than the predetermined intermediate frequency band.

摘要翻译： 适用于从DC到高频检测大电流的电流探头具有第一和第二电流检测装置。 第一电流检测装置检测从直流到预定中频带的被测电流。 具有正交磁通门元件，用于检测正交磁通门元件的感应电压的感应电压检测电路46和接收感应电压检测电路46的输出电压的反馈线圈50，用于产生磁通量以消除磁通量 由当前被测产生的。 第二电流检测装置具有罗氏线圈12和积分电路，并检测高于预定中频带的被测电流。