JP7045235B2 - 輸送監視システム - Google Patents
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- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
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- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/247—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet using distributed sensing elements, e.g. microcapsules
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- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/08—Testing mechanical properties
- G01M11/083—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT]
- G01M11/085—Testing mechanical properties by using an optical fiber in contact with the device under test [DUT] the optical fiber being on or near the surface of the DUT
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- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0008—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of bridges
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- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0025—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings of elongated objects, e.g. pipes, masts, towers or railways
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
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- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
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- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
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- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
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Description
Claims (8)
- 1つ以上の複数センサのセンサモジュール内に配置され、1つ以上の光ファイバ導波路上に配置される複数の光センサであって、各光センサが、前記複数の光センサの他の光センサから離間され、かつ移動可能な輸送機器を、前記輸送機器が運搬用構造物に沿って移動しているときに支持する前記運搬用構造物により規定される経路に沿った場所に配置され、前記複数の光センサが、前記運搬用構造物及び前記移動可能な輸送機器の一方又は両方に機械的に接続され、各光センサが、出力光信号を、前記運搬用構造物及び前記輸送機器の一方又は両方の振動放射音に応じて供給する、複数の光センサと、
前記光センサからの出力光信号を電気信号に変換するように構成される検出器ユニットと、
前記輸送機器の前記移動に同期して前記センサモジュールへの励起光の供給を制御し、前記電気信号の記録を前記輸送機器の移動に同期させるように構成され、特定の光センサ信号に対応する電気信号の記録を前記輸送機器が前記光センサの前記場所からの所定距離内に位置している時間窓に制限するようにさらに構成されるデータ取得コントローラとを備える、監視システム。 - 前記データ取得コントローラは、前記電気信号の記録を、前記電気信号群のうち少なくとも2つの電気信号の振幅が閾値を上回る場合に開始するように構成される、請求項1に記載のシステム。
- 前記データ取得コントローラは、前記輸送機器の速度及び方向を決定するように構成され、かつ前記輸送機器が前記光センサの前記場所から所定距離内に位置している期間を、前記輸送機器の前記速度及び前記方向に基づいて推定するように構成される、請求項1に記載のシステム。
- 1つ以上の光ファイバ導波路上に配置され、前記光ファイバ導波路に沿って直列に配置される複数の光センサであって、各光センサが、異なる波長の励起光に応答し、前記複数の光センサの他の光センサから離間され、かつ移動可能な輸送機器を、前記輸送機器が運搬用構造物に沿って移動しているときに支持する運搬用構造物により規定される経路に沿った場所に配置され、前記複数の光センサが、前記運搬用構造物及び前記移動可能な輸送機器の一方又は両方に機械的に接続され、各光センサが、出力光信号を、前記運搬用構造物及び前記輸送機器の一方又は両方の振動放射音に応じて供給する、複数の光センサと、
前記光センサからの出力光信号を電気信号に変換するように構成される少なくとも1つの検出器と、
前記励起光の前記波長を前記輸送機器の前記移動に同期させることによって前記光ファイバ導波路上の前記出力光信号を時分割多重化し、前記電気信号からのデータ取得を前記輸送機器の移動に同期させるように構成され、特定の光センサ信号に対応する電気信号の記録を前記輸送機器が前記光センサの前記場所からの所定距離内に位置している時間窓に制限するようにさらに構成されるデータ取得コントローラと、
前記運搬用構造物及び前記輸送機器のうち少なくとも一方の状態を、前記電気信号から取得されるデータに基づいて検出するように構成されるプロセッサとを備える、監視システム。 - 前記プロセッサは、前記運搬用構造物の亀裂、破損、負荷レベル、負荷分布、転動接触疲労、腐食、摩滅、摩耗、及び構造座屈のうち1つ以上を検出するように構成される、請求項4に記載のシステム。
- 出力光信号を1つ以上の複数センサのセンサモジュール内に配置された複数の光センサから受信することであって、ここで、各光センサが、移動可能な輸送機器を、前記輸送機器が運搬用構造物に沿って移動しているときに支持する運搬用構造物により規定される経路に沿った場所に配置され、前記複数の光センサが、前記運搬用構造物及び前記移動可能な輸送機器の一方又は両方に機械的に接続され、各出力光信号は前記運搬用構造物及び前記輸送機器の一方又は両方の振動放射音に応答するものである、前記受信することと、
前記出力光信号を電気信号に変換することと、
前記電気信号の記録を前記運搬用構造物に沿った前記輸送機器の移動に同期させ、特定の光センサ信号に対応する電気信号の記録を前記輸送機器が前記光センサの前記場所からの所定距離内に位置している時間窓に制限することと、
前記輸送機器の前記移動に同期して前記センサモジュールへの励起光の供給を制御することと、を含む、方法。 - 前記運搬用構造物及び前記輸送機器の少なくとも一方の状態を前記電気信号に基づいて検出することを更に含む、請求項6に記載の方法。
- 前記運搬用構造物及び前記輸送機器の少なくとも一方の前記状態を検出することは、前記電気信号から取得される前記電気信号を、前記運搬用構造物又は輸送機器の異なる状態を特徴付ける既知のテンプレートとパターン照合することを含む、請求項6に記載の方法。
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