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公开(公告)号：US20110202295A1
公开(公告)日：2011-08-18
申请号：US13020757
申请日：2011-02-03
申请人： Manabu TAMURA , Masatoshi NOMURA , Masaru KOISHI
发明人： Manabu TAMURA , Masatoshi NOMURA , Masaru KOISHI
IPC分类号： G01R19/00
CPC分类号： G01R15/20 , G01R15/207
摘要： A current measuring device includes a conductor in which detection target current flows, at least two magnetic sensors that detect change of magnetic field generated when the detection target current flows in the conductor, and a calculation unit that calculates magnitude of the detection target current from an output of the magnetic sensor. At least two magnetic sensors are provided at different distances from the conductor, and the calculation unit acquires distances between the magnetic sensors and the conductor to calculate magnitude of the detection target current using the distances.
摘要翻译： 电流测量装置包括检测目标电流流过的导体，检测目标电流在导体中流动时产生的磁场变化的至少两个磁传感器，以及计算单元，其计算检测目标电流的大小 输出磁传感器。 在与导体不同的距离处提供至少两个磁传感器，并且计算单元获取磁传感器和导体之间的距离，以使用距离来计算检测目标电流的大小。
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公开(公告)号：US20110199079A1
公开(公告)日：2011-08-18
申请号：US13020764
申请日：2011-02-03
IPC分类号： G01R33/02
CPC分类号： H01M10/44 , G01R15/205 , G01R31/3696 , H01M10/48
摘要： A current sensor includes a magnetic detection element having a resistance value changed by applying inductive magnetic field from measurement target current, a magnetic core provided in the vicinity of the magnetic detection element, and a coil generating magnetic field attenuating the inductive magnetic field. A constant level current in a predetermined range of output voltage of the magnetic detection element flows in the coil, and the measurement target current is detected on the basis of the output voltage of the magnetic detection element.
摘要翻译： 电流传感器包括具有通过施加来自测量目标电流的感应磁场而改变的电阻值的磁性检测元件，设置在磁性检测元件附近的磁芯和产生衰减感应磁场的磁场的线圈。 磁检测元件的预定输出电压范围内的恒定电流在线圈中流动，并且基于磁检测元件的输出电压来检测测量对象电流。
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公开(公告)号：US20110221429A1
公开(公告)日：2011-09-15
申请号：US13026127
申请日：2011-02-11
申请人： Manabu TAMURA
发明人： Manabu TAMURA
IPC分类号： G01R33/02
CPC分类号： G01R15/207
摘要： Disclosed is a current sensor including magnetic sensors disposed on a conductor having at least two separated current-carrying areas with different current magnitudes and detecting a magnetic field generated according to currents flowing through the conductor and a controller controlling outputs of the magnetic sensors, wherein the magnetic sensors are disposed in at least two respective areas having different current magnitudes and the controller switches outputs of the magnetic sensors.
摘要翻译： 公开了一种电流传感器，其包括设置在具有不同电流幅度的至少两个分离的载流区域的导体上的磁传感器，并且检测根据流过导体的电流产生的磁场和控制磁传感器的输出的控制器，其中 磁传感器设置在具有不同电流幅度的至少两个相应区域中，并且控制器切换磁传感器的输出。
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公开(公告)号：US20120263985A1
公开(公告)日：2012-10-18
申请号：US13531445
申请日：2012-06-22
CPC分类号： G01R15/207 , G01R15/205 , G01R31/3696
摘要： A current sensor includes a magnetic balance sensor and a switching circuit. The magnetic balance sensor includes a feedback coil which is disposed near a magnetic sensor element varying in characteristics due to application of an induction field caused by measurement current and which produces a canceling magnetic field canceling the induction field. The switching circuit switches between magnetic proportional detection and magnetic balance detection. The magnetic proportional detection is configured to output a voltage difference as a sensor output. The magnetic balance detection is configured to output, as a sensor output, a value corresponding to current flowing through the feedback coil when a balanced state in which the induction field and the canceling magnetic field cancel each other out is reached after the feedback coil is energized by the voltage difference.
摘要翻译： 电流传感器包括磁平衡传感器和开关电路。 磁平衡传感器包括反馈线圈，该反馈线圈设置在由于由测量电流引起的感应场的施加而在特性上变化的磁传感器元件附近，并产生抵消感应场的消除磁场。 开关电路在磁比例检测和磁平衡检测之间切换。 磁比例检测被配置为输出作为传感器输出的电压差。 磁平衡检测被配置为当在反馈线圈通电之后达到感应场和抵消磁场抵消的平衡状态时，作为传感器输出输出与流过反馈线圈的电流对应的值 通过电压差。
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