JP2014526871A - ワイヤレスエネルギー伝送システムにおける異物検出 - Google Patents
ワイヤレスエネルギー伝送システムにおける異物検出 Download PDFInfo
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Abstract
Description
本出願は、2011年9月9日に出願された米国仮出願61/532,785の優先権を主張するものである。
[パッシブ軽減技術]
[アクティブ軽減技術]
[アクティブFOD検出処理]
1. FODを存在させないで、8の字状ループの1つから、時間サンプリングされた電圧波形を収集する。
2. 基本周波数成分(又はその高調波)の振幅及び位相を計算する。
3. 振幅及び位相を基準値(ベースライン)として記憶する。
4. FODを存在させて、同じ8の字状ループから、電圧波形を収集する。
5. 基本周波数成分(又はその高調波)の振幅及び位相を計算する。
6. 振幅及び位相を基準値と比較する。
7. 極座標プロット上で(又は振幅‐位相スペース内で)、信号と基準値との間の距離が予め決定したしきい値を超える場合に、FODの検出を宣する。
[代表的なアクティブFOD検出実施例]
[その他の実施例]
[ビークル充電への適用]
‐ビークルがソースモジュールを越えて運転される前に、FODを(しばしば)検査したり、充電ステーションの調子及び状態を(たまに)検査したりするのにビークルが訪れることなしに、低電力診断検査を実行しうるようにする。
‐ビークルがソースモジュールを越えて到達し位置した後であるが高電力充電する前に、ソースモジュールには依然としてFODが無いことをFOD検出器が確認しうるようにする。
‐高電力充電中に、追加のFODがコイル上に移動しないことをFOD検出器が確認しうるようにする。
Claims (19)
- 少なくとも1つの磁界センサと、
この少なくとも1つの磁界センサの電気的パラメータを測定する少なくとも1つの読出回路と
を具えるワイヤレスエネルギー伝送システム用の異物破片検出システムにおいて、
前記少なくとも1つの磁界センサが前記ワイヤレスエネルギー伝送システムの磁界内に位置している異物破片検出システム。 - 請求項1に記載の異物破片検出システムにおいて、前記少なくとも1つの磁界センサが磁界グラジオメータを有している異物破片検出システム。
- 請求項2に記載の異物破片検出システムにおいて、少なくとも1つの磁界グラジオメータが8の字状の四極子導体ループを有している異物破片検出システム。
- 請求項2に記載の異物破片検出システムにおいて、少なくとも1つの磁界グラジオメータが八極子導体ループを有している異物破片検出システム。
- 請求項2に記載の異物破片検出システムにおいて、前記読出回路が、グラジオメータループ内で電流が循環するのを殆ど阻止するのに充分な入力インピーダンスを有している異物破片検出システム。
- 請求項3に記載の異物破片検出システムにおいて、前記8の字状の四極子導体ループが回路板上に印刷されている異物破片検出システム。
- 請求項6に記載の異物破片検出システムにおいて、前記8の字状の四極子導体ループは方形である異物破片検出システム。
- 請求項3に記載の異物破片検出システムにおいて、この異物破片検出システムが、ワイヤレスエネルギー伝送の磁界内に位置するグラジオメータループのアレイを有している異物破片検出システム。
- 請求項8に記載の異物破片検出システムにおいて、この異物破片検出システムが、互いにオフセットし且つ重複したグラジオメータループの複数の層を有している異物破片検出システム。
- 請求項5に記載の異物破片検出システムにおいて、前記読出回路が複数のグラジオメータループ間で多重化されている異物破片検出システム。
- 請求項に記載の異物破片検出システムにおいて、この異物破片検出システムが更に帰還ループを有し、この異物破片検出システムから生じる読みに基づいてワイヤレスエネルギー伝送のパラメータを調整するようになっている異物破片検出システム。
- 請求項2に記載の異物破片検出システムにおいて、前記グラジオメータが、検出すべき最小の異物破片(FOD)の寸法の少なくとも2倍の大きさである異物破片検出システム。
- 異物破片検出を行うワイヤレスエネルギー伝送システムにおいて、このワイヤレスエネルギー伝送システムが、
発振磁界を発生するように構成された少なくとも1つのワイヤレスエネルギー伝送ソースと、
前記発振磁界内に位置するようにした少なくとも1つの磁界グラジオメータと、
この少なくとも1つの磁界グラジオメータの電気的パラメータを測定する読出回路と、
測定されたこの少なくとも1つの磁界グラジオメータの電気的パラメータに応答してワイヤレスエネルギー伝送ソースのパラメータを制御する帰還ループと
を具えているワイヤレスエネルギー伝送システム。 - 請求項13に記載のワイヤレスエネルギー伝送システムにおいて、このワイヤレスエネルギー伝送システムが更に、少なくとも1つの温度センサを有し、この温度センサは前記少なくとも1つのワイヤレスエネルギー伝送ソースの付近の温度を測定するように配置されているワイヤレスエネルギー伝送システム。
- 請求項13に記載のワイヤレスエネルギー伝送システムにおいて、前記グラジオメータから生じる読みを用いて前記少なくとも1つのワイヤレスエネルギー伝送ソースのエネルギー伝送をシャットダウンさせるようになっているワイヤレスエネルギー伝送システム。
- 請求項13に記載のワイヤレスエネルギー伝送システムにおいて、このワイヤレスエネルギー伝送システムが更に、高入力インピーダンス読出回路に接続された磁界グラジオメータのアレイを有しているワイヤレスエネルギー伝送システム。
- 請求項16に記載のワイヤレスエネルギー伝送システムにおいて、前記高入力インピーダンス読出回路がグラジオメータループの電圧を監視するようになっているワイヤレスエネルギー伝送システム。
- 請求項17に記載のワイヤレスエネルギー伝送システムにおいて、前記高入力インピーダンス読出回路がグラジオメータループの電圧信号の位相を監視するようになっているワイヤレスエネルギー伝送システム。
- 請求項18に記載のワイヤレスエネルギー伝送システムにおいて、このワイヤレスエネルギー伝送システムが更に、前記読出回路を、前記少なくとも1つのワイヤレスエネルギー伝送ソースの発振磁界の周波数と同期させる磁界検出ループを有しているワイヤレスエネルギー伝送システム。
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US201161532785P | 2011-09-09 | 2011-09-09 | |
US61/532,785 | 2011-09-09 | ||
PCT/US2012/054490 WO2013036947A2 (en) | 2011-09-09 | 2012-09-10 | Foreign object detection in wireless energy transfer systems |
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JP2014526871A true JP2014526871A (ja) | 2014-10-06 |
JP2014526871A5 JP2014526871A5 (ja) | 2015-11-05 |
JP6185472B2 JP6185472B2 (ja) | 2017-08-23 |
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EP (2) | EP2998153B1 (ja) |
JP (1) | JP6185472B2 (ja) |
KR (2) | KR102010943B1 (ja) |
CN (1) | CN103875159B (ja) |
AU (1) | AU2012305688B2 (ja) |
CA (1) | CA2848040C (ja) |
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US10840748B2 (en) | 2012-11-05 | 2020-11-17 | Apple Inc. | Inductively coupled power transfer systems |
US10923956B2 (en) | 2015-11-19 | 2021-02-16 | Apple Inc. | Inductive power transmitter |
US11329519B2 (en) | 2015-04-02 | 2022-05-10 | Apple Inc. | Inductive power transmitter |
WO2024106148A1 (ja) * | 2022-11-16 | 2024-05-23 | オムロン株式会社 | 異物検知装置及びコイル装置 |
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US9184595B2 (en) | 2008-09-27 | 2015-11-10 | Witricity Corporation | Wireless energy transfer in lossy environments |
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CN103875159B (zh) | 2017-03-08 |
EP2998153A1 (en) | 2016-03-23 |
AU2012305688B2 (en) | 2017-06-01 |
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EP2998153B1 (en) | 2023-11-01 |
US20160276875A1 (en) | 2016-09-22 |
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