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公开(公告)号：US20170256347A1
公开(公告)日：2017-09-07
申请号：US15599738
申请日：2017-05-19
Applicant: Mitsubishi Electric Corporation
Inventor： Masaaki OKADA , Tomokazu OGOMI , Hiroyuki ASANO , Takeshi KISHIMOTO , Kenji SHIMOHATA
IPC: H01F7/02
CPC classification number: H01F7/021
Abstract: A magnetic circuit, provided with a short magnet (1a) and short magnet (1b) that are arranged in an array, and a yoke (2a) and a yoke (2b) provided so as to sandwich the short magnet (1a) and short magnet (1b). The short magnet (1a) and short magnet (1b), are arranged, that have a space between them that is a predetermined gap (3) or less in the arrangement direction of the array respectively. In addition, the short magnet (1a) and short magnet (1b) are arranged so that one magnetic pole is located on the side toward one of the pair of yokes (2a) and (2b), and the other magnetic pole is located on the side toward the other yoke.
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公开(公告)号：US20150304511A1
公开(公告)日：2015-10-22
申请号：US14440543
申请日：2014-04-03
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Takuo MORIMOTO , Tomokazu OGOMI , Toshiaki SHOJI , Masashi HINO , Toru ARAMAKI , Atsushi ITO
CPC classification number: H04N1/00326 , G07D7/04 , G07D7/12 , H04N1/00339 , H04N1/12 , H04N1/193 , H04N2201/0081
Abstract: A magnet is disposed on one side of a conveyance plane in which a sheet-like medium to be read is conveyed and generates a magnetic field in a direction perpendicular to the conveyance plane. A magnetoresistive effect element is disposed between the magnet and the conveyance plane, and detects an intensity variation in a conveyance direction component of the magnetic field in a magnetic reading area. An imaging optical system and a light receiver are disposed on the side opposite to the magnet side with respect to the conveyance plane. The imaging optical system forms an image of an optical reading area on the light receiver, the optical reading area including at least a portion in the conveyance direction of the magnetic reading area of the conveyance plane.
Abstract translation: 在传送平面的一侧设置磁铁，在该传送平面中要读取的片状介质被传送，并在垂直于输送平面的方向上产生磁场。 磁阻效应元件设置在磁体和输送平面之间，并且检测磁读取区域中磁场的输送方向分量的强度变化。 成像光学系统和光接收器相对于输送平面设置在与磁体侧相反的一侧。 成像光学系统在光接收器上形成光学读取区域的图像，光学读取区域至少包括传送平面的磁性读取区域的输送方向的一部分。
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公开(公告)号：US20220124213A1
公开(公告)日：2022-04-21
申请号：US17290256
申请日：2019-11-05
Applicant: Mitsubishi Electric Corporation
Inventor： Toru ARAMAKI , Tomokazu OGOMI , Masatoshi KODAMA
Abstract: An image reading apparatus (1) includes image sensors (20A, 20B). The image sensor (20A) includes light guides (21A, 22A) guiding light to a reading target (M), a lens body (8A) forming an image of reflected light derived from the light guided by the light guides (21A, 22A) and reflected from the reading target (M), light receiving elements (11A) converting the image of reflected light formed by the lens body (8A) into electrical signals, and a controller (14A) controlling exposure times of the light receiving elements (11A). The image sensor (20B) includes a lens body (8B) forming an image of transmitted light derived from the light guided by the light guide (22A) and transmitted through the reading target (M), light receiving elements (11B) converting the image of transmitted light formed by the lens body (8B) into electrical signals, and a controller (14B) controlling exposure times of the light receiving elements (11B).
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公开(公告)号：US20190360838A1
公开(公告)日：2019-11-28
申请号：US16333095
申请日：2017-10-24
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Hiroaki KAHARA , Masaaki OKADA , Tatsuya KUNIEDA , Tomokazu OGOMI , Hideki MATSUI , Sadaaki YOSHIOKA
IPC: G01D5/16 , G01R33/09 , G07D11/235 , G01R33/00
Abstract: A magnetic sensor device includes a magnet to form a magnetic field in a conveyance path of a detection target, a magnetoresistance effect element to output a change in the magnetic field as a change in a resistance value, a casing to enclose or hold the magnet and the magnetoresistance effect element, a cover to cover the magnetoresistance effect element and form a conveyance path surface that is a surface along the conveyance path, and a signal amplification board having a signal amplification IC disposed on an intersection surface that intersects the conveyance path surface. The signal amplification IC amplifies the change in the resistance value that is output by the magnetoresistance effect element. The change in the resistance value depends on the change in the magnetic field caused due to conveyance of the detection target on the conveyance path surface.
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公开(公告)号：US20170205474A1
公开(公告)日：2017-07-20
申请号：US15327792
申请日：2015-07-24
Applicant: Mitsubishi Electric Corporation
Inventor： Tomokazu OGOMI , Kenji SHIMOHATA , Hiroyuki ASANO , Jin INOUE
CPC classification number: G01R33/096 , G01R33/091 , G01R33/093 , G01R33/098 , G07D7/04
Abstract: A magnetic sensor device includes: a magnetic field generator, disposed at one surface side of a sheet-like to-be-detected object including a magnetic component, to generate an intersecting magnetic field intersecting the object; and a magnetoresistive effect element disposed between the object and the magnetic field generator, having a resistance value changing in accordance with change of a component of the intersecting magnetic field in a conveyance direction along which the object is conveyed, when the object is conveyed. The magnetoresistive effect element includes resistive elements adjacent to each other in the conveyance direction and interconnected by a bridge, disposed in linear symmetry relative to an axis perpendicular to the conveyance direction and extending through a center of the bridge. A position in the conveyance direction of the bridge center of the magnetoresistive effect element coincides with a position in the conveyance direction of the magnetic field generator center.
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Patent Agency Ranking
公开(公告)号：US20190086237A1
公开(公告)日：2019-03-21
申请号：US16156939
申请日：2018-10-10
Applicant: Mitsubishi Electric Corporation
Inventor： Hideki MATSUI , Tatsuya KUNIEDA , Tomokazu OGOMI , Masaaki OKADA , Sadaaki YOSHIOKA
Abstract: A magnetic sensor device includes: a magnetic circuit for forming a magnetic field, a magnetoresistance effect element, and a heat dissipater. The magnetoresistance effect element outputs changes in the magnetic field as changes in a resistance value, and is arranged on a surface (of a +Z side) of the magnetic circuit at a conveyance path side thereof. The heat dissipater is arranged in close contact with the magnetic circuit at the opposite side thereof (−Z side) from the conveyance path.
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公开(公告)号：US20190056461A1
公开(公告)日：2019-02-21
申请号：US16078604
申请日：2017-03-14
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Hideki MATSUI , Tomokazu OGOMI , Masaaki OKADA , Kenji SHIMOHATA , Sadaaki YOSHIOKA
CPC classification number: G01R33/091 , G01R33/02 , G01R33/09 , G07D7/00 , G07D7/04
Abstract: A magnetic sensor device includes: a magnet; a magnetic-resistance-effect-element mounted substrate on which a magnetic-resistance-effect-element mounted body is mounted on a surface thereof opposite to a surface thereof facing the magnet, the magnetic-resistance-effect-element mounted body extending in the longitudinal direction of the magnet; a case that accommodates or retains the magnet and the magnetic-resistance-effect-element mounted substrate; and a magnetic shield that covers the case except for the surface of the magnetic-resistance-effect-element mounted substrate on which is mounted the magnetic-resistance-effect-element mounted body. The magnetic shield covers the case at a position corresponding to the surface of the magnetic-resistance-effect-element mounted substrate facing the magnet, or from the position corresponding to the surface of the magnetic-resistance-effect-element mounted substrate facing the magnet to a side of the case opposite to the magnet.
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公开(公告)号：US20180198413A1
公开(公告)日：2018-07-12
申请号：US15537571
申请日：2016-04-25
Applicant: Mitsubishi Electric Corporation
Inventor： Tomokazu OGOMI , Takayuki NAKAI
CPC classification number: H03F1/0211 , G01R33/0023 , G01R33/09 , H03F1/0277 , H03F3/45076 , H03F3/45475 , H03F3/72 , H03F2200/414 , H03F2200/417 , H03F2200/421 , H03F2203/45138 , H03F2203/45276 , H03F2203/45526 , H03F2203/45686 , H03F2203/45701 , H03G1/0088 , H03G3/30 , H03G5/12 , H03G5/14
Abstract: In a sensor reader, an IC chip has a function for amplifying and outputting a sensor signal from each sensor element included in a sensor array, and includes a plurality of channel amplifiers connected each of the sensor elements. When an output switch is closed and the IC chip is in the outputting state, channel switches operate sequentially, and sensor amplification signals are output sequentially from the channel amplifiers. When the output switch is open and the IC chip is in the non-outputting state, a bias current of an operational amplifier of the channel amplifier is decreased, the IC chip is set to a low power consumption state, and gain of the operational amplifier is decreased.
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公开(公告)号：US20170052233A1
公开(公告)日：2017-02-23
申请号：US15307965
申请日：2015-05-12
Applicant: MITSUBISHI ELECTRIC CORPORATION
Inventor： Tomokazu OGOMI , Kenji SHIMOHATA
CPC classification number: G01R33/096 , G01R33/0005 , G01R33/02 , G01R33/09 , G07D7/04
Abstract: A magnetic sensor device includes: a magnet, extending in a longitudinal direction, that has different magnetic poles in a direction perpendicular to a conveyance direction of a detected object having a magnetic material, the longitudinal direction being orthogonal to the conveyance direction; and anisotropic magnetoresistive elements arranged linearly in the longitudinal direction on a detected object-side magnetic pole of the magnet, wherein the magnet is provided with a magnetic material yoke between the anisotropic magnetoresistive elements and the magnet, and the end of the magnet in the longitudinal direction has a greater length in the direction perpendicular to the conveyance direction than the center in the longitudinal direction.
Abstract translation: 磁传感器装置包括：沿长度方向延伸的磁体，其在与具有磁性材料的被检测物体的输送方向垂直的方向上具有不同的磁极，该纵向方向与输送方向正交; 和在磁体的检测对象侧磁极上沿纵向线性排列的各向异性磁阻元件，其中磁体在各向异性磁阻元件和磁体之间设置有磁性材料磁轭，磁体的纵向方向 方向在垂直于输送方向的方向上比在纵向方向上的中心具有更大的长度。
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公开(公告)号：US20230118954A1
公开(公告)日：2023-04-20
申请号：US17916076
申请日：2021-02-17
Applicant: Mitsubishi Electric Corporation
Inventor： Tomokazu OGOMI , Kazuki YAMAUCHI , Kenji SHIMOHATA
Abstract: A first magnetic field generator generates a magnetic field intersecting a detection object being transported along a transport path. A second magnetic field generator opposite to the first magnetic field generator with respect to the transport path generates a magnetic field intersecting the detection object. A first magnetoresistive element between the first magnetic field generator and the transport path outputs, as a change in resistance, a change in magnetic flux density produced by transport of the detection object. The first and second magnetic field generators are different in a magnetic pole facing the transport path and are arranged with a center of the first magnetic field generator in a transport direction of the detection object and a center of the second magnetic field generator in the transport direction are located at mutually different positions. The first magnetoresistive element includes a first resistor and a second resistor arranged with spacing therebetween.
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