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公开(公告)号：US20140111196A1
公开(公告)日：2014-04-24
申请号：US14123820
申请日：2012-06-26
IPC分类号： G01R19/00
CPC分类号： G01R19/0092 , G01R15/205 , G01R33/093
摘要： A current sensor for measuring a current flowing through a conductor includes a sensor substrate, a magnetoelectric converter formed on a surface of the sensor substrate and configured to output a signal changing with an applied magnetic field, and a magnetic shield that surrounds the sensor substrate and the conductor to magnetically shield the inside from the outside. The output signal of the magnetoelectric converter changes with a magnetic filed applied along the formation surface of the sensor substrate. The magnetic shield has at least one gap for reducing magnetic saturation in the magnetic shield. The gap and the sensor substrate are located at the same height in a z-direction orthogonal to the formation surface of the sensor substrate.
摘要翻译： 用于测量流过导体的电流的电流传感器包括传感器基板，形成在传感器基板的表面上并被配置为输出利用施加的磁场变化的信号的磁电转换器和围绕传感器基板的磁屏蔽， 导体将外部的内部磁屏蔽。 磁电转换器的输出信号随着沿着传感器基板的形成表面施加的磁场而变化。 磁屏蔽具有至少一个用于减小磁屏蔽中的磁饱和的间隙。 间隙和传感器基板位于与传感器基板的形成表面正交的z方向上相同的高度。
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公开(公告)号：US09417269B2
公开(公告)日：2016-08-16
申请号：US14123820
申请日：2012-06-26
CPC分类号： G01R19/0092 , G01R15/205 , G01R33/093
摘要： A current sensor for measuring a current flowing through a conductor includes a sensor substrate, a magnetoelectric converter formed on a surface of the sensor substrate and configured to output a signal changing with an applied magnetic field, and a magnetic shield that surrounds the sensor substrate and the conductor to magnetically shield the inside from the outside. The output signal of the magnetoelectric converter changes with a magnetic filed applied along the formation surface of the sensor substrate. The magnetic shield has at least one gap for reducing magnetic saturation in the magnetic shield. The gap and the sensor substrate are located at the same height in a z-direction orthogonal to the formation surface of the sensor substrate.
摘要翻译： 用于测量流过导体的电流的电流传感器包括传感器基板，形成在传感器基板的表面上并被配置为输出利用施加的磁场变化的信号的磁电转换器和围绕传感器基板的磁屏蔽， 导体将外部的内部磁屏蔽。 磁电转换器的输出信号随着沿着传感器基板的形成表面施加的磁场而变化。 磁屏蔽具有至少一个用于减小磁屏蔽中的磁饱和的间隙。 间隙和传感器基板位于与传感器基板的形成表面正交的z方向上相同的高度。
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公开(公告)号：US09638767B2
公开(公告)日：2017-05-02
申请号：US13613835
申请日：2012-09-13
申请人： Kousuke Nomura , Norihiro Kurumado
发明人： Kousuke Nomura , Norihiro Kurumado
CPC分类号： G01R33/09
摘要： In a current sensor for detecting an electric current flowing in a current path, a magnetic field generating element generates a second magnetic field perpendicular to a first magnetic field generated by the electric current of the current path, and a magnetic sensor generates at least one of a first signal containing a sine value according to an angle defined between the second magnetic field and a synthetic magnetic field composed of the first magnetic field and the second magnetic field and a second signal containing a cosine value according to the angle. A signal processing unit includes a calculation circuit that calculates a tangential value according to the angle using the at least one of the first signal and the second signal, and outputs a sensor signal containing the tangential value.
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4.发明申请Electric current detector having detector element holder coupled to magnetic core casing 审中-公开具有耦合到磁芯外壳的检测器元件保持器的电流检测器公开(公告)号：US20090039880A1
公开(公告)日：2009-02-12
申请号：US12222194
申请日：2008-08-05
IPC分类号： G01R33/02
CPC分类号： G01R33/07 , G01R15/202
摘要： An electric current detector according to the present invention detects an amount of current flowing through a conductor inserted into a through-hole of the current detector. The current detector includes a magnetic core casing in which a ring-shaped magnetic core having an air gap is molded and a detector element holder made by resin on which a detector element such as a Hall element is mounted. The detector element holder is coupled to the magnetic core casing so that the detector element is correctly positioned in the air gap of the ring-shaped magnetic core. Since the detector element is exposed to the air gap without being molded by resin, the detection accuracy is not affected by temperature changes in the course of usage. The detector element holder is simply coupled to the magnetic core casing without using complex connecting members. Accordingly, the electric current detector is manufactured at a low cost.
摘要翻译： 根据本发明的电流检测器检测流过插入到电流检测器的通孔中的导体的电流量。 电流检测器包括：磁芯壳体，其中模制有气隙的环形磁芯和由树脂制成的检测器元件支架，其上安装有诸如霍尔元件的检测器元件。 检测器元件保持器联接到磁芯壳体，使得检测器元件被正确地定位在环形磁芯的气隙中。 由于检测器元件暴露于气隙而不被树脂模制，所以检测精度不受使用过程中的温度变化的影响。 检测器元件保持器简单地耦合到磁芯外壳，而不使用复杂的连接构件。 因此，以低成本制造电流检测器。
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公开(公告)号：US08779756B2
公开(公告)日：2014-07-15
申请号：US13097152
申请日：2011-04-29
申请人： Kousuke Nomura
发明人： Kousuke Nomura
IPC分类号： G01R15/20
CPC分类号： G01R15/205
摘要： A current sensor for detecting a first electric current flowing through a current path includes a sensor chip, a coil, a current control circuit, and an output circuit. The sensor chip includes a magnetoresistive element and is adopted to be located near the current path. The coil applies a bias magnetic field to the magnetoresistive element. The current control circuit supplies a second electric current to the coil. The second electric current periodically changes in polarity. The output circuit outputs a difference between a first voltage and a second voltage. The first voltage is generated by the magnetoresistive element, when the second electric current flowing through the coil has a positive polarity. The second voltage is generated by the magnetoresistive element, when the second electric current flowing through the coil has a negative polarity.
摘要翻译： 用于检测流过电流路径的第一电流的电流传感器包括传感器芯片，线圈，电流控制电路和输出电路。 传感器芯片包括磁阻元件，并被采用在电流路径附近。 线圈向磁阻元件施加偏置磁场。 电流控制电路向线圈提供第二电流。 第二电流的极性周期性地变化。 输出电路输出第一电压和第二电压之间的差。 当流过线圈的第二电流具有正极性时，第一电压由磁阻元件产生。 当流过线圈的第二电流具有负极性时，磁阻元件产生第二电压。
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