JP6929611B2 - 光学式ルート検査システムおよび方法 - Google Patents
光学式ルート検査システムおよび方法 Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61K—AUXILIARY EQUIPMENT SPECIALLY ADAPTED FOR RAILWAYS, NOT OTHERWISE PROVIDED FOR
- B61K9/00—Railway vehicle profile gauges; Detecting or indicating overheating of components; Apparatus on locomotives or cars to indicate bad track sections; General design of track recording vehicles
- B61K9/08—Measuring installations for surveying permanent way
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L25/00—Recording or indicating positions or identities of vehicles or trains or setting of track apparatus
- B61L25/02—Indicating or recording positions or identities of vehicles or trains
- B61L25/025—Absolute localisation, e.g. providing geodetic coordinates
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- B61—RAILWAYS
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- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/041—Obstacle detection
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/042—Track changes detection
- B61L23/047—Track or rail movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61L—GUIDING RAILWAY TRAFFIC; ENSURING THE SAFETY OF RAILWAY TRAFFIC
- B61L23/00—Control, warning or like safety means along the route or between vehicles or trains
- B61L23/04—Control, warning or like safety means along the route or between vehicles or trains for monitoring the mechanical state of the route
- B61L23/042—Track changes detection
- B61L23/048—Road bed changes, e.g. road bed erosion
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Description
本明細書において説明される発明の主題の別の例において、システム(例えば、光学式ルート検査システム)は、車両上に搭載され、車両がルートに沿って移動している間にルートの近づいてくるセグメントの複数の第1の画像を取得するように構成された1つ以上のカメラを含む。システムはまた、第1の画像間の差を識別するために第1の画像を互いに比較し、識別された第1の画像間の差に基づいてルートの近づいてくるセグメント上またはセグメント付近の異物を識別し、識別された第1の画像間の差に基づいて異物が一時的な物体かまたは永続的な物体かを決定し、異物が一時的な物体かまたは永続的な物体かを決定することに応答して1つ以上の緩和アクションを実現するように構成された1つ以上のコンピュータプロセッサを含む。
図1は、本明細書において説明される発明の主題の一例に係る光学式ルート検査システム100の模式図である。システム100は、鉄道車両のような車両102上に積載配列される。車両102は、1つ以上の機関車および鉄道車のような1つ以上の他の車両と接続されて、線路のようなルート120に沿って走行するコンシストを形成し得る。あるいは、車両102は、別のタイプのオフハイウェイ車両のような別のタイプの車両(例えば、公道を走行するよう設計されていない車両または公道の走行が可能でない車両)、自動車等であり得る。コンシストにおいて、車両102は、例えば、列車または他の車両システムにおける、乗客および/または貨物を牽引および/または推進し得る。
システム100は、カメラ106がルート120に沿って車両102とともに移動するよう、車両102に搭載またはそうでなければ接続された1つ以上のカメラ106(例えば、カメラ106a、106b)を含む。カメラ106は、カメラ106が車両102の走行または移動の方向104に向けられるという点で、フォワードフェイシングカメラ106であり得る。例えば、カメラ106の視野108、110は、カメラ106によって取得される画像上に取り込まれる空間を表す。図示された例において、カメラ106は、視野108、110が移動車両102の正面の空間の画像および/または映像を取り込むという点で、フォワードフェイシングである。カメラ106は、静止(例えば、スチル)画像および/または動画像(例えば、映像)を取得し得る。
カメラ106は、車両102が相対的に速い速度で移動している間にルート120の画像を取得し得る。例えば、画像は、車両102が、ルート120で保線が行われていない場合またはルート120の速度上限が減じられていない場合のルート120の線路速度といった、ルート120の速度上限または速度上限付近で移動している間に、取得され得る。
カメラ106は、カメラコントローラ112から受け取られた信号に基づいて動作する。カメラコントローラ112は、1つ以上のコンピュータプロセッサ(例えば、マイクロプロセッサ)または他の電子論理ベースのデバイスを含む、および/またはそれらに結合された、1つ以上のハードウェア回路または回路素子を含む、または表す。カメラコントローラ112は、カメラ106を起動してカメラ106に画像データを取得させる。この画像データは、車両102の前方に配列されたルート120の1つ以上の部分またはセグメントの画像といった、カメラ106の視野108、110の画像を表す。カメラコントローラ112は、カメラ106のフレームレート(例えば、カメラ106が画像を取得する速度または周波数)を変化させ得る。
システム100の1つ以上の画像分析プロセッサ116が、カメラ106の1つ以上によって取得された画像を検査する。プロセッサ116は、1つ以上のコンピュータプロセッサ(例えば、マイクロプロセッサ)または他の電子論理ベースのデバイスを含む、および/またはそれらに結合された、1つ以上のハードウェア回路または回路素子を含む、または表し得る。一態様において、プロセッサ116は、画像のどの部分がルート120を表すかを識別し、これらの部分を1つ以上のベンチマーク画像と比較することによって、画像を検査する。1つ以上のカメラ取得画像とベンチマーク画像(単数または複数)との間の類似または差に基づいて、プロセッサ116は、カメラ画像中に示されたルート120のセグメントがアラインメント不整であるかどうかを決定し得る。
102 移動車両、車両
104 方向
106 フォワードフェイシングカメラ、カメラ
106a カメラ
106b カメラ
108 視野
110 視野
112 カメラコントローラ
114 車両コントローラ、コントローラ
116 画像分析プロセッサ、分析プロセッサ、プロセッサ
118 画像メモリ、メモリ
120 ルート
200 カメラ取得画像、画像
202 画素、レール
204 レール
300 ベンチマーク視覚プロファイル、ベンチマーク視覚画像
302 領域
304 領域
400 視覚マッピング図、マッピング図
402 グループ
404 グループ
406 グループ
500 軌間距離
500a 距離
500b 軌間距離、距離
600 転轍機
602 ルート
604 ルート
606 第1の走行方向
608 第2の走行方向
610 第3の走行方向
800 オーバーレイ表現、表現
802 異物
804 第1の位置
806 第2の位置
808 第3の位置
1000 カメラ取得画像、画像
1002 ベンチマーク視覚プロファイル
1004 ベンチマーク視覚プロファイル
1100 カメラ取得画像、画像
1102 ベンチマーク視覚プロファイル
1104 ベンチマーク視覚プロファイル
1106 セグメント
Claims (3)
- ルートに沿って移動している車両上の1つ以上のカメラにより前記ルートの近づいてくるセグメントの複数の第1の画像を取得することであって、前記1つ以上のカメラは前記車両の前端部に配置されることと、
前記ルートの前記近づいてくるセグメント上または前記ルートの前記近づいてくるセグメント付近の異物を識別するために1つ以上のコンピュータプロセッサにより前記第1の画像を検査することと、
前記1つ以上のプロセッサにより前記第1の画像間の1つ以上の差を識別することと、
識別された前記第1の画像間の前記1つ以上の差に基づいて前記異物が一時的な物体かまたは永続的な物体かを決定することと、
前記異物が前記一時的な物体かまたは前記永続的な物体かを決定することに応答して実現するための緩和アクションを選択することであって、前記緩和アクションは、前記第1の画像間の前記1つ以上の差から推定される前記異物の移動速度に基づいて複数の異なる緩和アクションから選択されることと、
前記異物が前記一時的な物体かまたは前記永続的な物体かを決定することに応答して複数の異なる緩和アクションから選択される緩和アクションを実現することとを備える、方法。 - 前記異物にズームインするために前記1つ以上のカメラの倍率レベルを増大させることと、前記異物の1つ以上の第2の画像を取得することとをさらに備え、前記異物が、前記第1の画像と前記1つ以上の第2の画像との間の比較に応答して前記永続的な物体であると決定される、請求項1に記載の方法。
- 前記第1の画像は、異なる時間に取得され、前記緩和アクションを選択することは、前記異なる時間に取得された前記第1の画像における前記1つ以上の差に基づいて前記複数の異なる緩和アクションに優先順位をつけることを含む、請求項1に記載の方法。
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US14/217,672 US11124207B2 (en) | 2014-03-18 | 2014-03-18 | Optical route examination system and method |
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JP2015041910A JP6614569B2 (ja) | 2014-03-18 | 2015-03-04 | 光学式ルート検査システムおよび方法 |
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JP2020048405A (ja) | 2020-03-26 |
JP6614569B2 (ja) | 2019-12-04 |
US11124207B2 (en) | 2021-09-21 |
US20150268172A1 (en) | 2015-09-24 |
JP2015179509A (ja) | 2015-10-08 |
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