LATENT REFERENCES / TAG1
TMR Sensor Array Unit: Magnetic Sensor Array
Original title: TMRセンサアレイユニット 磁気センサアレイ
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A TMR (Tunnel Magnetoresistance) magnetic sensor array is a technology for detecting magnetic fields with high sensitivity and precision. It detects magnetic fields using the TMR effect—the property that resistance changes when the magnetization directions differ across a tunnel between 2 magnetic materials. Arranging multiple TMR elements side by side enables a TMR sensor array to detect magnetic fields over a wider area or measure particular directions and strengths in greater detail.
An MR (Tunnel Magnetoresistance) sensor array unit is a unit comprising an array of magnetic sensors using the TMR effect. The TMR effect is a phenomenon in which electrical resistance changes according to differences in magnetization direction in ferromagnetic tunnel junctions. This property is used in sensors detecting magnetic-field direction and strength.
TMR sensor array units feature 360° angle measurement, high angular accuracy, low power consumption, and redundancy. Products optimized particularly for automotive and industrial applications also exist.
TMR sensors have higher MR ratios (resistance change rates) than AMR (Anisotropy Magnetoresistance) or GMR (Giant Magnetoresistance). In TMR elements, the MR ratio reaches 100%, allowing highly sensitive magnetic detection.
Applications of TMR sensor-array units are progressing in fields requiring highly accurate angle measurement and magnetic-field detection.
TMR (Tunnel Magnetoresistance) 磁気センサアレイは、高い感度と高精度で磁場を検知する技術です。TMR効果を利用し、2つの磁性体の間にトンネルで磁化方向が異なる場合に抵抗値が変化する特性を使い、磁場を検出します。TMRセンサアレイは、複数のTMR素子を並べて配置することで、より広範囲な磁場を検知したり、特定の方向や強さをより詳細に測定したりできます。
MR（Tunnel Magnetoresistance）センサアレイユニットとは、TMR効果を利用した磁気センサを配列して構成したユニットのことです。TMR効果とは、強磁性体トンネル接合における磁化の向きの差異によって電気抵抗が変化する現象です。この特性を利用して、磁場方向や強さを検知するセンサとして用いられます。
TMRセンサアレイユニットは、360°の角度計測、高い角度精度、低消費電力、冗長性などが特徴です。特に、車載や産業アプリケーション向けに最適化された製品も存在します。
TMRセンサは、AMR（Anisotropy Magnetoresistance）やGMR（Giant Magnetoresistance）と比較して、高いMR比（抵抗変化率）を持ちます。TMR素子では、MR比が100%にも達し、高感度な磁気検知が可能になります.
TMRセンサアレイユニットは、高精度な角度計測や磁場検知が必要とされる分野で、その応用が進んでいます.
Source updated 2025-05-09 · Snapshot 2026-10-08
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