JP6442446B2 - 車両データシステム及び方法 - Google Patents
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- G01C21/3407—Route searching; Route guidance specially adapted for specific applications
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Description
−システムAが常に正しい(特異性及び感度=1)。
−システムBが常に正しい(特異性及び感度=1)。
−システムAがスリップ有りを検知する場合は間違っていなく、システムBがスリップ無しを検知する場合は間違っていない。
−システムBがスリップ有りを検知する場合は間違っていなく、システムAがスリップ無しを検知する場合は間違っていない。
さらに2つの可能な中間ケースがある。
−システムAがスリップ有りを検知する場合はほぼ間違っていなく、システムBがスリップ無しを検知する場合はほぼ間違っていない。
−システムBがスリップ有りを検知する場合はほぼ間違っていなく、システムAがスリップ無しを検知する場合はほぼ間違っていない。
f=1/2(fA+fB)
ここで、fA及びfBは、2つのシステムA及びシステムBによって測定される値である。この推定は、実際には完全には正しくないであろう。測定値fA及びfBの統計プロパティは、前述のパラメータベクトル(スリップシナリオ)に依存するであろう。例えば、低い力での急カーブにおいて、システムAは、高い統計精度(例えば、再現性)を有するものの、大幅に真値から過大評価するかもしれない、或いは、高い統計スプレッドを有するものの不偏の期待値を配信するかもしれない。実際には、本実施形態では第2のケースを扱うことを想定している。
f=1/a+b(a*fA+b*fB)
ここで、a及びbは、上述したパラメータ空間の関数であり、例えば、力のパラメータ、カーブ、速度、ブレーキ/アクセスのレベル(量)及び任意の適切なパラメータを含む。
Claims (14)
- 複数の車両に実装される複数のデバイスと通信を行うように構成されたサーバシステムであって、
前記複数の車両からの、前記車両のパラメータを示す車両データを受信する通信リソースと、
気象データを取得し、前記気象データ及び前記車両データの両方に従って少なくとも1つの気象関連条件を決定するために、前記気象データ及び前記車両データを処理するように動作可能な処理リソースと
を備え、
前記少なくとも1つの気象関連条件を決定する前記気象データ及び前記車両データの処理は、前記車両データの少なくとも一部に基づいて、前記気象データを修正又は検証し、
前記車両データは、前記車両のドライビング動作を表し、
前記処理リソースは、前記車両の前記ドライビング動作が前記気象データと整合するかどうかを判断し、当該判断結果に応じて前記気象データを修正又は検証するように構成されることを特徴とするサーバシステム。 - 前記気象関連条件は、気象条件及び道路上の少なくとも1つの場所の条件の少なくとも一方を含むことを特徴とする請求項1に記載のサーバシステム。
- 前記車両データは、前記車両の動作プロパティ、及び、前記車両での気象関連条件を含む環境条件の少なくとも一方を表すことを特徴とする請求項1又は2に記載のサーバシステム。
- 前記処理リソースは、前記気象データと、前記車両データとに基づき、前記気象関連条件を決定するために、統計モデルを適用するように構成され、
前記統計モデルは、過去の車両データと、過去の気象データと、少なくとも1つの気象関連条件の過去の発生との間における関係を表すことを特徴とする請求項1乃至3の何れか1項に記載のサーバシステム。 - 前記少なくとも1つの気象関連条件を決定する前記気象データ及び前記車両データの処理は、気象関連の警告を表す警告データを生成、修正又は検証することを特徴とする請求項1乃至4の何れか1項に記載のサーバシステム。
- 前記処理リソースは、所定の時間期間にわたる前記気象データ及び前記車両データの少なくとも一方の変動に従って前記警告データを生成、修正、又は検証するように構成されることを特徴とする請求項5に記載のサーバシステム。
- 前記処理リソースは、所定の時間期間にわたる車両データの過去の変動、所定の時間期間にわたる気象データの過去の変動、及び前記少なくとも1つの気象関連条件の過去の発生の間の関係を表す統計モデルを適用することによって、前記警告データを生成、修正、又は検証するように構成されることを特徴とする請求項5又は6に記載のサーバシステム。
- 前記警告データは、前記気象関連の警告の開始、終了、又は期間を表す時刻データを含み、
前記処理リソースは、前記車両データを監視し、前記車両データに従って前記時刻データの生成、検証、及び修正の少なくとも1つを行うように構成されることを特徴とする請求項5乃至7の何れか1項に記載のサーバシステム。 - 前記車両データは、1つ以上のスリップイベントの有無を表すことを特徴とする請求項1乃至8の何れか1項に記載のサーバシステム。
- 前記処理リソースは、エリアの少なくとも1つの車両に実装された複数のデバイスから受信した車両データに従って前記エリアにおける気象関連の警告を生成又は修正し、他のデバイスの場所に従って前記他のデバイスに前記気象関連の警告を選択的に送信し、
前記他のデバイスは、前記エリアに存在することを特徴とする請求項1乃至9の何れか1項に記載のサーバシステム。 - 前記車両データは、第1の車両システムから取得される第1の車両データと、該第1の車両システムとは異なる第2の車両システムから取得される第2の車両データとを含み、
前記処理リソースは、イベントが発生したかどうかを前記第1及び第2の車両データから決定するように構成されることを特徴とする請求項1乃至10の何れか1項に記載のサーバシステム。 - 前記イベントは、スリップイベントであり、
前記第1の車両システムは、専用の車両スリップ検知システムを備え、
前記第2の車両システムは、加速度センサ、角度モーメントセンサ、力センサ、ステアリングセンサ、及びブレーキングセンサの少なくとも1つを備えることを特徴とする請求項11に記載のサーバシステム。 - 複数の車両に実装される複数のデバイスと通信する方法であって、
前記複数の車両からの、前記車両のパラメータを示す車両データをサーバで受信するステップと、
前記サーバで気象データを取得するステップと、
前記気象データ及び前記車両データの両方に従って少なくとも1つの気象関連条件を決定するために前記気象データ及び前記車両データを処理するステップと
を含み、
前記車両データを処理する前記ステップは、前記車両データの少なくとも一部に基づいて、前記気象データを修正又は検証するステップを含み、
前記車両データは、前記車両のドライビング動作を表し、
前記処理するステップは、前記車両の前記ドライビング動作が前記気象データと整合するかどうかを判断し、当該判断結果に応じて前記気象データを修正又は検証することを特徴とする方法。 - 請求項13に記載の方法の各ステップを実行するコンピュータで実行可能なコンピュータ読み取り可能命令を含むコンピュータプログラム。
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Application Number | Priority Date | Filing Date | Title |
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GBGB1018815.9A GB201018815D0 (en) | 2010-11-08 | 2010-11-08 | High-definition weather for improved routing and navigation systems |
GB1018815.9 | 2010-11-08 | ||
GBGB1116928.1A GB201116928D0 (en) | 2010-11-08 | 2011-09-30 | A vehicle data system and method |
GB1116928.1 | 2011-09-30 |
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