公开(公告)号：US20150069997A1

公开(公告)日：2015-03-12

申请号：US14540978

申请日：2014-11-13

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Ken KAWAHATA ,  Nobuyoshi YAMASAKI ,  Masatoshi NOMURA

IPC: G01R19/32 ,  G01R19/25 ,  G01R3/00 ,  G01R1/30 ,  G01R33/09 ,  H03F1/30 ,  G01R35/00

CPC classification number: G01R19/32 ,  G01R1/30 ,  G01R3/00 ,  G01R15/207 ,  G01R19/25 ,  G01R33/09 ,  G01R35/00 ,  H03F1/30 ,  H03F3/45475 ,  H03F3/45968 ,  H03F2200/228 ,  H03F2200/261 ,  H03F2200/411 ,  H03F2203/45528 ,  Y10T29/4902

Abstract: A manufacturing method is used for a current sensor including a current measurement circuit configured to include magnetoelectric conversion elements, a first amplification-and-correction circuit configured to amplify an output of the current measurement circuit and correct, based on a set first correction amount, a temperature characteristic of an offset, a second amplification-and-correction circuit configured to amplify an output of the first amplification-and-correction circuit, adjust a sensitivity, and correct, based on a set second correction amount, a magnitude of the offset, and a substrate in which the current measurement circuit, the first amplification-and-correction circuit, and the second amplification-and-correction circuit are provided, wherein after the first correction amount is set based on characteristics of the magnetoelectric conversion elements, the magnetoelectric conversion elements are mounted in the substrate and the second correction amount is set.

Abstract translation: 一种电流传感器的制造方法，包括电流测量电路，其被配置为包括磁电转换元件，第一放大校正电路，被配置为放大电流测量电路的输出，并且基于设定的第一校正量来校正， 偏移的温度特性，第二放大校正电路，被配置为放大第一放大校正电路的输出，调整灵敏度，并根据设定的第二校正量校正偏移量的大小 以及设置有电流测量电路，第一放大校正电路和第二放大校正电路的基板，其中，在基于磁电转换元件的特性设定第一校正量之后， 磁电转换元件安装在基板中，并且设定第二校正量。

公开(公告)号：US20130033260A1

公开(公告)日：2013-02-07

申请号：US13650069

申请日：2012-10-11

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Masatoshi NOMURA

IPC: G01R33/038 ,  G01R33/09

CPC classification number: G01R15/207 ,  G01R15/205 ,  G01R31/364 ,  G01R33/0041

Abstract: A current sensor includes a pair of magnetic balance sensors and a switching circuit. The magnetic balance sensors each include a magnetic sensor element and a feedback coil. The magnetic sensor element varies in characteristics due to an induction field caused by measurement current. The feedback coil is disposed near the magnetic sensor element and produces a canceling magnetic field canceling out the induction field. Each of the magnetic balance sensors outputs, 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. The switching circuit turns on/off one of the magnetic balance sensors.

Abstract translation: 电流传感器包括一对磁平衡传感器和开关电路。 磁平衡传感器各自包括磁传感器元件和反馈线圈。 由于由测量电流引起的感应场，磁性传感器元件的特性变化。 反馈线圈设置在磁传感器元件附近，并产生抵消感应场的消除磁场。 每个磁平衡传感器作为传感器输出，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，输出与流过反馈线圈的电流对应的值。 开关电路打开/关闭其中一个磁平衡传感器。

公开(公告)号：US20140103918A1

公开(公告)日：2014-04-17

申请号：US14109691

申请日：2013-12-17

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Masatoshi NOMURA

IPC: G01R19/00

CPC classification number: G01R19/0092 ,  G01D5/12 ,  G01R15/205 ,  G01R15/207 ,  G01V3/08

Abstract: A current sensor includes a first current path, a second current path disposed parallel to the first current path, and a pair of first magnetic sensors. The first current path has a pair of main surfaces and includes a plate-shaped first region. The second current path has a pair of main surfaces and includes a plate-shaped second region. The first magnetic sensors are arranged on the respective main surfaces in the first region such that sensing axes of the first magnetic sensors are parallel to the respective main surfaces in the first region. The first magnetic sensors are configured to sense a magnetic field generated by a target current flowing through the first region. The second region is placed such that the main surfaces in the second region are perpendicular to the sensing axes of the first magnetic sensors.

Abstract translation: 电流传感器包括第一电流路径，平行于第一电流路径设置的第二电流路径和一对第一磁性传感器。 第一电流路径具有一对主表面，并且包括板状的第一区域。 第二电流路径具有一对主表面，并且包括板状的第二区域。 第一磁传感器布置在第一区域中的相应主表面上，使得第一磁传感器的感测轴平行于第一区域中的相应主表面。 第一磁传感器被配置为感测由流过第一区域的目标电流产生的磁场。 第二区域被放置成使得第二区域中的主表面垂直于第一磁传感器的感测轴。

公开(公告)号：US20130106412A1

公开(公告)日：2013-05-02

申请号：US13719067

申请日：2012-12-18

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Masatoshi NOMURA ,  Manabu TAMURA

IPC: G01R33/00

CPC classification number: G01R33/0041 ,  G01R15/205 ,  G01R33/00 ,  G01R33/02

Abstract: An electrical current sensor includes a magnetic detection element whose characteristics are changed by an inductive magnetic field from a current to be measured, a plurality of coils that are connected in series with each other and which are arranged in the vicinity of the magnetic detection element, and generates a canceling magnetic field for canceling the inductive magnetic field by a feedback current flowing in the coils, and a switch circuit that selects a coil electrically connected with an input terminal and/or an output terminal of the feedback current from the plurality of coils, and controls a coil for allowing the feedback current to flow.

Abstract translation: 电流传感器包括其特性通过来自待测电流的感应磁场而变化的磁检测元件，彼此串联连接并布置在磁检测元件附近的多个线圈， 并产生用于通过在线圈中流动的反馈电流来消除感应磁场的消除磁场;以及开关电路，其选择与来自多个线圈的反馈电流的输入端子和/或输出端子电连接的线圈 并且控制用于允许反馈电流流动的线圈。

公开(公告)号：US20130154630A1

公开(公告)日：2013-06-20

申请号：US13766664

申请日：2013-02-13

Applicant: ALPS GREEN DEVICES CO., LTD.

Inventor： Masatoshi NOMURA ,  Manabu TAMURA

IPC: G01R19/257

CPC classification number: G01R19/257 ,  G01R15/207

Abstract: A current sensor includes: a first magnetic sensor and a second magnetic sensor; a first analog-to-digital converter which is connected to the first magnetic sensor and converts an output signal of the first magnetic sensor from an analog signal to a digital signal so as to be output; a second analog-to-digital converter which is connected to the second magnetic sensor and converts an output signal of the second magnetic sensor from an analog signal to a digital signal so as to be output; and an operation device which is connected to the first analog-to-digital converter and the second analog-to-digital converter, and outputs an operation value by subjecting the output signal of the first analog-to-digital converter and the output signal of the second analog-to-digital converter to differential operation.

Abstract translation: 电流传感器包括：第一磁传感器和第二磁传感器; 第一模数转换器，连接到第一磁传感器，并将第一磁传感器的输出信号从模拟信号转换为数字信号，以输出; 第二模数转换器，其连接到第二磁传感器，并将第二磁传感器的输出信号从模拟信号转换为数字信号，以输出; 以及连接到第一模数转换器和第二模数转换器的操作装置，并且通过使第一模数转换器的输出信号和第一模数转换器的输出信号 第二个模数转换器进行差分运算。

公开(公告)号：US20130057275A1

公开(公告)日：2013-03-07

申请号：US13665624

申请日：2012-10-31

Applicant: ALPS Green Devices Co., Ltd.

Inventor： Manabu TAMURA ,  Masatoshi NOMURA ,  Hiroyuki HEBIGUCHI

IPC: G01R33/02

CPC classification number: G01R15/207 ,  B60L3/0038 ,  B60L11/182 ,  B60L11/1861 ,  B60L2240/549 ,  G01R1/203 ,  G01R19/0092 ,  Y02T10/7005 ,  Y02T10/7044 ,  Y02T10/705 ,  Y02T10/7072 ,  Y02T10/7088 ,  Y02T90/122 ,  Y02T90/14

Abstract: A current sensor includes a magnetic balance sensor including a feedback coil that is disposed in the vicinity of a magnetic sensor element whose characteristics are changed by an inducted magnetic field from a current to be measured and generates a cancellation magnetic field for offsetting the inducted magnetic field, a shunt resistant that is connected in series with a current line for circulating the current to be measured, and a switch circuit that switches to magnetic balance detection at the time of a small current and switches to shunt resistance detection at the time of a large current.

Abstract translation: 电流传感器包括磁平衡传感器，该磁平衡传感器包括设置在磁传感器元件附近的反馈线圈，该磁传感器元件的特性通过来自待测电流的感应磁场而变化，并产生用于抵消感应磁场的抵消磁场 ，与用于循环待测电流的电流线串联连接的分流电阻，以及在小电流时切换到磁平衡检测的开关电路，并在大时间切换到分流电阻检测 当前。