JP6663405B2 - 装着可能物体により決定空間へ安全にアクセスする方法及びシステム - Google Patents
装着可能物体により決定空間へ安全にアクセスする方法及びシステム Download PDFInfo
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- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
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- G07C2009/00388—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks code verification carried out according to the challenge/response method
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Description
2 アクセス又は解錠デバイス
3 装着可能物体
21 送信器
22 受信器
23 局部発振器
25 デジタル処理ユニット
26 アンテナ
31 送信器
32 受信器
33 局部発振器
35 デジタル処理ユニット
36 アンテナ
Claims (9)
- ワイヤレス信号通信を通じて、装着可能物体(3)により、アクセス又は解錠デバイス(2)を備える空間に安全にアクセスする方法であって、前記アクセス又は解錠デバイス(2)は、高周波数での無線周波数信号送信器(21)、高周波数での無線周波数信号受信器(22)、処理ユニット(25)、及び前記アクセス又は解錠デバイス(2)の動作をクロック制御する局部発振器(23)を備え、前記装着可能物体(3)は、高周波数での無線周波数信号送信器(31)、高周波数での無線周波数信号受信器(32)、処理ユニット(35)、及び前記装着可能物体(3)の動作をクロック制御する局部発振器(33)を備え、前記方法は、
−前記装着可能物体(3)を起動するステップ、
−前記アクセス又は解錠デバイス(2)から第1のコード化信号を送信するステップ、
−前記アクセス又は解錠デバイス(2)からの前記第1のコード化信号を前記装着可能物体(3)内で受信するステップ、
−前記装着可能物体(3)からのコード化応答信号(応答2)を前記アクセス又は解錠デバイス(2)内で受信するステップ、
−前記アクセス又は解錠デバイス(2)と前記装着可能物体との間の信号の飛行時間を決定するために、前記アクセス又は解錠デバイス(2)の前記処理ユニット(25)において、変換された前記コード化応答信号(応答2)を処理して、推定した距離が距離閾値を下回る場合に前記装着可能物体(3)の認識後に前記空間へのアクセスを許可するために、前記装着可能物体(3)と前記アクセス又は解錠デバイス(2)とを隔てる距離を前記飛行時間から推定するステップ
を含み、
前記アクセス又は解錠デバイス(2)の前記局部発振器(23)は、水晶振動子(24)を有する発振器であり、前記装着可能物体(3)の前記局部発振器(33)は、前記アクセス又は解錠デバイス(2)の前記水晶振動子(24)と同様である水晶振動子(34)を有する発振器であり、
前記第1のコード化信号は、前記アクセス又は解錠デバイス(2)によって送信し、前記装着可能物体(3)によって受信し、前記装着可能物体(3)は、前記装着可能物体(3)の前記処理ユニット(35)内での分析を実施すること、前記第1のコード化信号の送信後、更なる変調によりスクランブル化した前記アクセス又は解錠デバイスのコード化応答信号(応答1)は、時間遅延(TR1)を伴って前記アクセス又は解錠デバイス(2)によって生成、送信すること、前記装着可能物体は、第1の受信時間窓において前記アクセス又は解錠デバイスからスクランブル化した前記コード化応答信号(応答1)を受信し、前記第1の受信時間窓は、前記アクセス又は解錠デバイスのスクランブル化した前記コード化応答信号(応答1)の持続時間に調節してあること、前記アクセス又は解錠デバイスのスクランブル化した前記コード化応答信号(応答1)の処理は、前記装着可能物体(3)の前記処理ユニット(35)内での変換後に、時間遅延を伴って実施し、更なる変調によってスクランブル化した前記装着可能物体からの前記コード化応答信号(応答2)を生成、送信すること、前記アクセス又は解錠デバイス(2)は、前記アクセス又は解錠デバイスの第2の受信時間窓において前記装着可能物体(3)からスクランブル化した前記コード化応答信号(応答2)を受信し、前記第2の受信時間窓は、前記装着可能物体(3)からのスクランブル化した前記コード化応答信号(応答2)の持続時間に調節してあること、及び前記装着可能物体(3)の変換したスクランブル化した前記コード化応答信号(応答2)の処理は、前記アクセス又は解錠デバイス(2)の前記処理ユニット(25)内で時間遅延を伴って実施し、前記アクセス又は解錠デバイス(2)と前記装着可能物体(3)との間の飛行時間及び距離を計算し、
前記装着可能物体(3)は、起動後、搬送周波数の連続信号(CW)を送信し、前記搬送周波数の連続信号(CW)は、前記第1のコード化信号の送信前に前記アクセス又は解錠デバイス(2)によって受信すること、前記アクセス又は解錠デバイス(2)の前記局部発振器(23)に関係する前記装着可能物体(3)の前記局部発振器(33)の周波数誤差の計算は、前記アクセス又は解錠デバイス(2)の前記処理ユニット(25)内で実施すること、前記周波数誤差の計算と並行して、前記第1のコード化信号は、前記アクセス又は解錠デバイス(2)によって送信すること、及び前記アクセス又は解錠デバイスのスクランブル化した前記コード化応答信号(応答1)は、正確な同期要求を伴って送信される
ことを特徴とする、安全なアクセス方法。 - 前記アクセス又は解錠デバイス(2)の前記局部発振器(23)は、前記装着可能物体(3)の前記局部発振器(33)が生成する発振信号と同様の周波数で発振信号を生成することを特徴とする、請求項1に記載の安全なアクセス方法。
- 前記アクセス又は解錠デバイス(2)及び前記装着可能物体(3)が送受信する信号の周波数は、約5.8GHzの周波数にあること、前記アクセス又は解錠デバイス(2)が送信するローリング・コード信号又は擬似ランダム雑音コード化信号である前記第1のコード化信号のデータ送信速度は、1Mbit/sであること、前記スクランブル化した前記コード化応答信号(応答1)及び前記スクランブル化した前記コード化応答信号(応答2)は、擬似ランダム雑音コード化信号により規定されており、1Mbit/sの更なる変調を伴う約26Mbit/s又は125Mbit/sの送信速度にあることを特徴とする、請求項1に記載の安全なアクセス方法。
- 前記アクセス又は解錠デバイス(2)のローリング・コード信号である前記第1のコード化信号は、前記装着可能物体(3)によって受信し、前記装着可能物体(3)の前記局部発振器(33)に関係する前記アクセス又は解錠デバイス(2)の前記局部発振器(23)の周波数誤差の計算は、前記装着可能物体(3)の前記処理ユニット(35)内で実施すること、前記装着可能物体(3)のスクランブル化した前記コード化応答信号(応答2)の送信の間、正確な同期を規定するために、前記装着可能物体(3)の前記処理ユニット(35)は、前記アクセス又は解錠デバイス(2)のスクランブル化した前記コード化応答信号(応答1)の送信から前記装着可能物体(3)のスクランブル化した前記コード化応答信号(応答2)の送信時間を計算し、前記装着可能物体(3)のスクランブル化した前記コード化応答信号(応答2)は、前記アクセス又は解錠デバイスの第2の受信時間窓において受信することを特徴とする、請求項1に記載の安全なアクセス方法。
- 請求項1から4のうちいずれか一項に記載の前記安全なアクセス方法を実施するための、装着可能物体により空間へ安全にアクセスするシステム(1)であって、前記システム(1)は、アクセス又は解錠デバイス(2)、及び前記アクセス又は解錠デバイス(2)とのワイヤレス信号通信のための装着可能物体(3)を備え、前記アクセス又は解錠デバイス(2)は、高周波数での無線周波数信号の送信器(21)、高周波数での無線周波数信号の受信器(22)、処理ユニット(25)、及び前記アクセス又は解錠デバイス(2)の動作をクロック制御する局部発振器(23)を備え、前記装着可能物体(3)は、高周波数での無線周波数信号の送信器(31)、高周波数での無線周波数信号の受信器(32)、処理ユニット(35)、及び前記装着可能物体(3)の動作をクロック制御する局部発振器(33)を備える、安全なアクセスシステム(1)。
- 前記アクセス又は解錠デバイス(2)の前記局部発振器(23)は、水晶振動子(24)を有する発振器であり、前記装着可能物体(3)の前記局部発振器(33)は、前記アクセス又は解錠デバイス(2)の前記水晶振動子(24)と同様の水晶振動子(34)を有する発振器であることを特徴とする、請求項5に記載の安全なアクセス・システム(1)。
- 前記無線周波数信号の高周波数は、約5.8GHzであることを特徴とする、請求項5に記載の安全なアクセス・システム(1)。
- 前記アクセス又は解錠デバイス(2)の前記送信器(21)及び前記受信器(22)は、高周波数で信号を送受信する単一のアンテナ(26)を有するマルチプレクサの形態の切替え要素(120)により接続していること、並びに前記装着可能物体(3)の前記送信器(31)及び前記受信器(32)は、同じ高周波数で信号を送受信する単一のアンテナ(36)を有するマルチプレクサの形態の切替え要素(150)により接続していることを特徴とする、請求項5に記載の安全なアクセス・システム(1)。
- 前記アクセス又は解錠デバイス(2)は、車両内に配置すること、及び前記装着可能物体(3)は、電子キーであり、前記電子キーは、前記電子キーのボタン又は接触による手動動作によって起動するか、又は前記アクセス又は解錠デバイス(2)による低周波数始動信号の送信により起動することができることを特徴とする、請求項5に記載の安全なアクセス・システム(1)。
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