JP2020537749A - 位置符号化のためのエンコーダ及び方法 - Google Patents
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Abstract
Description
Claims (16)
- 金属板と、前記金属板上に配置された誘電体層と、前記誘電体層上に配置されて共振回路のパターンを形成する複数の金属構成要素とを備える層状構造物と、
偏波方向に沿って振動するように偏波された横波である共振周波数の波形を前記層状構造物に送信する送信器と、
前記層状構造物から反射された前記波形の振幅を測定する受信器と、
前記層状構造物によって形成される前記共振回路の前記パターンに基づいて前記送信器の位置を前記反射波形の振幅に関係付けるデータを記憶するメモリと、
前記データに基づいて前記振幅の測定値から前記送信器の位置を求めるプロセッサと、
前記送信器の位置をレンダリングする出力インターフェースと、
を備える、エンコーダ。 - 前記金属構成要素は、前記送信器の相対位置を符号化するように、前記誘電体層上に配置されて、一定距離を空けて互いに分離された同一の特性を有する共振回路の周期的パターンを形成し、前記データは、前記同一の特性を有する共振回路の前記周期的パターンを形成する前記層状構造物から反射された前記波形の信号モデルを含み、前記プロセッサは、前記信号モデルに基づいて前記振幅の前記測定値から前記位置を求める、請求項1に記載のエンコーダ。
- 前記金属構成要素は、前記送信器の絶対位置を符号化するように、前記誘電体層上に配置されて、同一の特性を有する共振回路の非周期的パターンを形成し、前記データは、振幅値シーケンスと前記送信器の前記位置との間のマッピングを含み、前記マッピングは、前記共振回路の非周期的パターンの関数であり、前記プロセッサは、前記マッピングに従って前記振幅の前記測定値を前記送信器の前記位置にマッピングする、請求項1に記載のエンコーダ。
- 一群の金属構成要素が、前記位置を符号化する単位セルを形成し、前記層状構造物は複数の単位セルを備え、前記メモリに記憶された前記データは、前記単位セルの位置及び方位のうちの一方又は組み合わせによって規定される符号を含む、請求項1に記載のエンコーダ。
- 前記単位セルの前記位置及び前記方位は、1ビットの前記符号を規定する、請求項1に記載のエンコーダ。
- 前記単位セルの前記位置及び前記方位は、2ビットの前記符号を規定する、請求項1に記載のエンコーダ。
- 前記単位セルは、前記波形の前記偏波に対して同じ方位を有し、前記単位セルが占める前記層状構造物の部分は、前記波形の少なくとも一部分を吸収し、前記単位セルが存在しない前記層状構造物の部分は、前記金属板から前記偏波波形を反射する、請求項4に記載のエンコーダ。
- 少なくとも幾つかの単位セルが、前記波形の前記偏波に対して、反射方位及び吸収方位を含む異なる方位を有し、前記吸収方位を有する単位セルは前記入射偏波波形を吸収し、前記反射方位を有する単位セルは前記入射偏波波形を反射する、請求項4に記載のエンコーダ。
- 前記吸収方位を有する前記単位セルにおいて、前記単位セルを形成する前記金属構成要素の最も長い寸法は、前記偏波方向と整列され、前記反射方位を有する前記単位セルにおいて、前記単位セルを形成する前記金属構成要素の最も長い寸法は、前記偏波方向に対して垂直である、請求項8に記載のエンコーダ。
- 少なくとも幾つかの単位セルは、前記反射方位と前記吸収方位との間の中間の方位を有する、請求項9に記載のエンコーダ。
- 前記単位セルは、非正方形の金属構成要素によって形成された正方形の輪郭を有する、請求項10に記載のエンコーダ。
- 前記単位セルを形成する前記金属構成要素の幾何学的パラメータ及び配置は、前記共振周波数の関数であり、前記単位セルの金属構成要素が、前記共振周波数によって定まるインダクタンスを有するインダクタを形成するとともに、前記単位セルの少なくとも2つの金属構成要素が、前記共振周波数によって定まるキャパシタンスを有するキャパシタを形成するために、互いに距離をとるようにして位置決めされるようになっている、請求項4に記載のエンコーダ。
- 前記層状構造物は、複数の複合単位セルを備え、各複合単位セルは、第1の共振周波数用に選択された前記金属構成要素の第1の幾何学的パラメータ及び第1の配置を有する第1の単位セルと、第2の共振周波数用に選択された前記金属構成要素の第2の幾何学的パラメータ及び第2の配置を有する第2の単位セルとを備え、
前記送信器によって送信された前記波形は、前記第1の共振周波数を有する第1の波形と、前記第2の共振周波数を有する第2の波形とを含み、
前記受信器は、前記層状構造物から反射された前記第1の波形の振幅を測定して、第1の測定値シーケンスを生成するとともに、前記層状構造物から反射された前記第2の波形の振幅を測定して、第2の測定値シーケンスを生成し、
前記プロセッサは、同じ複合単位セルから来る前記第1の波形及び前記第2の波形の対応する測定値を組み合わせて複数ビットの前記符号を生成し、前記符号の前記ビットに基づいて前記送信器の前記位置を求める、請求項12に記載のエンコーダ。 - 前記データは、前記共振回路同士の互いに対する位置、前記波形の前記共振周波数に対する前記共振回路の共振周波数、及び前記波形の前記偏波方向に対する共振回路の方位のうちの1つ又は組み合わせを含む、請求項1に記載のエンコーダ。
- 前記共振周波数はTHzスペクトルにある、請求項1に記載のエンコーダ。
- 位置符号化のための方法であって、
偏波方向に沿って振動するように偏波された横波である共振周波数の波形を層状構造物に送信器によって送信することであって、前記層状構造物は、金属板と、前記金属板上に配置された誘電体層と、前記誘電体層上に配置されて共振回路のパターンを形成する複数の金属構成要素とを備えることと、
前記層状構造物から反射された前記波形の振幅を受信器によって測定することと、
前記層状構造物によって形成される前記共振回路の前記パターンに基づいて位置を前記反射波形の振幅に関係付けるデータをメモリから取り出すことと、
前記データに基づいて前記振幅の前記測定値から前記送信器の位置をプロセッサによって求めることと、
前記送信器の前記位置を出力インターフェースにレンダリングすることと、
を含む、方法。
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US15/911,861 | 2018-03-05 | ||
US15/911,861 US10451447B2 (en) | 2018-01-04 | 2018-03-05 | Polarization-dependent position encoder |
PCT/JP2018/042370 WO2019135325A1 (en) | 2018-01-04 | 2018-11-09 | Encoder and method for position encoding |
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- 2018-11-09 JP JP2020520678A patent/JP6880319B2/ja active Active
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JP2021512311A (ja) * | 2018-04-12 | 2021-05-13 | 三菱電機株式会社 | エンコーダ、絶対位置決めエンコーダ方法、及び絶対位置決めエンコーダシステム |
JP7094470B1 (ja) * | 2021-08-03 | 2022-07-01 | 三菱電機株式会社 | 偏光子、偏光子適用機器、及び偏光子の製造方法 |
WO2023012892A1 (ja) * | 2021-08-03 | 2023-02-09 | 三菱電機株式会社 | 偏光子、偏光子適用機器、及び偏光子の製造方法 |
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