JP2006317218A - 磁性量検知型磁気センサ装置 - Google Patents
磁性量検知型磁気センサ装置 Download PDFInfo
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- 230000005389 magnetism Effects 0.000 title abstract description 13
- 238000001514 detection method Methods 0.000 claims abstract description 35
- 239000000696 magnetic material Substances 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 2
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- 230000004304 visual acuity Effects 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 238000013459 approach Methods 0.000 description 4
- 230000007423 decrease Effects 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- 239000004020 conductor Substances 0.000 description 2
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- 238000005452 bending Methods 0.000 description 1
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- 230000005415 magnetization Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
- Measuring Magnetic Variables (AREA)
Abstract
【解決手段】 磁気センサ装置1は、MR素子Aと抵抗Rとを接続した磁気センサ3と、該センサ3に感磁軸qとほぼ垂直に中心磁力線を与えかつ中心磁力線の方向が紙幣pの移動方向と一致する、該媒体の移動方向に関して該センサ3の下流側に位置する永久磁石5とからなる。センサ3の感磁軸qは紙幣pと直角に置かれ、センサ3に接触乃至狭間隙を存して通過する紙幣pの磁気インク像を該磁気インク像の磁性量に対応した検知出力で検知する。
【選択図】 図1
Description
3、3A、3B、3C 磁気センサ 4 基盤
5 永久磁石 6 窓板
7 ホルダ板 7A ホルダブロック
8 充填材 9 リード線
10 導体リード A、B MR素子
C GMR素子 p 紙幣
q 感磁軸 r 磁気インク像
Claims (5)
- 磁性材料で描画した磁気像を有する媒体との間で相対移動される磁気センサと、
該センサにその感磁軸とほぼ垂直に中心磁力線を与えかつ中心磁力線の方向が媒体の移動方向と一致する、該媒体の移動方向に関して該センサの下流側に位置する永久磁石とからなり、
該センサの感磁軸は、媒体と直角乃至媒体の移動方向に関して上流側に前傾した姿勢に置かれ、該センサに接触乃至狭間隙を存して通過する媒体の磁気像を該磁気像の磁性量に応じた検知出力で検知することを特徴とする磁性量検知型磁気センサ装置。 - 前記感磁軸の傾き角の上限が60°であることを特徴とする請求項1記載の磁気センサ装置。
- 前記磁気センサがMR素子と抵抗とを、もしくはGMR素子と抵抗とを接続した磁気強度センサであることを特徴とする請求項1または2記載の磁気センサ装置。
- 前記磁気センサと永久磁石とを非磁性材料のケースに収容したことを特徴とする請求項1〜3のいずれかの項に記載の磁気センサ装置。
- 前記媒体は、磁気インクで描画した磁気像を有する紙幣であることを特徴とする請求項1〜4のいずれかの項に記載の磁気センサ装置。
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009003678A (ja) * | 2007-06-21 | 2009-01-08 | Panasonic Corp | 紙幣識別装置 |
KR101282561B1 (ko) | 2011-12-28 | 2013-07-04 | 노틸러스효성 주식회사 | 정전기 차단 구조의 자기 센서를 포함하는 지폐의 이매검지장치 |
US9279866B2 (en) | 2012-04-09 | 2016-03-08 | Mitsubishi Electric Corporation | Magnetic sensor |
JP2016518599A (ja) * | 2013-04-16 | 2016-06-23 | ウーシー レアー テクノロジー カンパニー リミテッド | 磁気抵抗技術に基づいて磁気パターンの表面磁界を検出する磁気ヘッド |
US10019863B2 (en) | 2014-06-11 | 2018-07-10 | Mitsubishi Electric Corporation | Magnetic sensor device |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211019A (en) * | 1975-07-17 | 1977-01-27 | Matsushita Electric Ind Co Ltd | Magnetic head |
JPH06180305A (ja) * | 1992-12-11 | 1994-06-28 | Glory Ltd | 磁気質検出装置 |
JP2005030872A (ja) * | 2003-07-10 | 2005-02-03 | Toshiba Corp | 磁性体量検出装置 |
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2005
- 2005-05-11 JP JP2005138350A patent/JP4767585B2/ja active Active
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5211019A (en) * | 1975-07-17 | 1977-01-27 | Matsushita Electric Ind Co Ltd | Magnetic head |
JPH06180305A (ja) * | 1992-12-11 | 1994-06-28 | Glory Ltd | 磁気質検出装置 |
JP2005030872A (ja) * | 2003-07-10 | 2005-02-03 | Toshiba Corp | 磁性体量検出装置 |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009003678A (ja) * | 2007-06-21 | 2009-01-08 | Panasonic Corp | 紙幣識別装置 |
KR101282561B1 (ko) | 2011-12-28 | 2013-07-04 | 노틸러스효성 주식회사 | 정전기 차단 구조의 자기 센서를 포함하는 지폐의 이매검지장치 |
US9279866B2 (en) | 2012-04-09 | 2016-03-08 | Mitsubishi Electric Corporation | Magnetic sensor |
JP2016518599A (ja) * | 2013-04-16 | 2016-06-23 | ウーシー レアー テクノロジー カンパニー リミテッド | 磁気抵抗技術に基づいて磁気パターンの表面磁界を検出する磁気ヘッド |
KR101817846B1 (ko) * | 2013-04-16 | 2018-01-11 | 우시 레어 테크놀로지 씨오., 엘티디 | 자기 저항 기술을 기반으로 하는 자성 패턴의 표면 자기장 검출용 자기 헤드 |
US10019863B2 (en) | 2014-06-11 | 2018-07-10 | Mitsubishi Electric Corporation | Magnetic sensor device |
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