JP2014515298A - 素子内を移動可能な物体の流れ特性の決定 - Google Patents
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- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
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- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/026—Measuring blood flow
- A61B5/0261—Measuring blood flow using optical means, e.g. infrared light
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
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- A61B5/68—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient
- A61B5/6801—Arrangements of detecting, measuring or recording means, e.g. sensors, in relation to patient specially adapted to be attached to or worn on the body surface
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- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/47—Scattering, i.e. diffuse reflection
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- G01P5/00—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft
- G01P5/26—Measuring speed of fluids, e.g. of air stream; Measuring speed of bodies relative to fluids, e.g. of ship, of aircraft by measuring the direct influence of the streaming fluid on the properties of a detecting optical wave
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
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Abstract
Description
Claims (14)
- 素子内を移動可能な物体の流れ特性を決定するセンサ装置であって、
− 前記素子に向かって光を放射するよう構成される発光ユニットと、
− 前記素子から後方散乱させられる光を検出するよう構成される光検出ユニットと、
− 前記素子の光入射素子部分及び前記素子の光検出素子部分を互いに空間的に分離させるよう構成される光ユニットと、
− 前記検出される後方散乱光及び前記放射光を示す光に基づき、前記素子内を移動可能な前記物体の前記流れ特性を決定するよう構成される決定ユニットとを含み、
前記光入射素子部分は、前記素子の上に入射する前記放射光と関連付けられ、前記光検出素子部分は、検出のために前記素子から後方散乱させられる前記後方散乱光と関連付けられる、
センサ装置。 - 前記発光ユニット及び前記光検出ユニットは、一体的に形成される、請求項1に記載のセンサ装置。
- 前記光ユニットは、前記光入射素子部分に向かう前記放射光の光路を前記光検出素子部分から後方散乱させられる前記後方散乱光の光路から分離させるよう構成される光路分離素子を含む、請求項1又は2に記載のセンサ装置。
- 前記光路分離素子は、偏光ビームスプリッタとして構成され、前記発光ユニットによって放射される前記放射光の偏光方向は、前記偏光ビームスプリッタの偏光軸に対して45度の角度の下に向けられる、請求項3に記載のセンサ装置。
- 前記光ユニットは、前記光路分離素子から受け取る前記放射光を前記光入射素子部分に向かって方向変更するよう構成される光方向変更素子を含む、請求項3又は4に記載のセンサ装置。
- 前記光入射素子部分と前記光検出素子部分との間の距離は、前記光路分離素子及び前記光方向変更素子の相対的な配置によって調節可能である、請求項5に記載のセンサ装置。
- 前記光路分離素子及び前記光方向変更素子は、一体的に形成される、請求項5又は6に記載のセンサ装置。
- 当該センサ装置は、
− 前記光ユニットと前記素子との間に配置される偏光変更素子を更に含み、
該偏光変更素子は、前記光ユニットから受け取られる前記放射光の偏光及び前記素子から後方散乱させられる前記後方散乱光の偏光を変更させるよう構成される、
請求項1乃至7のうちのいずれか1項に記載のセンサ装置。 - 前記光ユニット及び前記偏光変更素子は、前記光検出ユニットによって検出される前記後方散乱光の偏光及び前記放射光を示す前記光の偏光が互いに直交するように構成され、且つ互いに対して配置される、請求項8に記載のセンサ装置。
- 当該センサ装置は、
− 前記光ユニットと前記光入射素子部分との間に配置される第1のレンズ、及び/又は
− 前記光ユニットと前記光検出素子部分との間に配置される第2のレンズを更に含み、
前記第1のレンズは、前記放射光を前記光入射素子部分に向かって集束させるよう構成され、
前記第2のレンズは、前記光検出素子部分から後方散乱させられる前記後方散乱光を集束させるよう構成される、
請求項1乃至9のうちのいずれか1項に記載のセンサ装置。 - 当該センサ装置は、
− 前記光ユニットと前記光入射素子部分との間に配置される第1の光ファイバ、及び/又は
− 前記光ユニットと前記光検出素子部分との間に配置される第2の光ファイバを更に含み、
前記第1の光ファイバは、前記光ユニットからの前記放射光を前記光入射素子部分に向かって方向付けるよう構成され、
前記第2の光ファイバは、前記光検出素子部分からの前記後方散乱光を前記光ユニットに向かって方向付けるよう構成される、
センサ装置。
請求項1乃至10のうちのいずれか1項に記載のセンサ装置。 - 前記センサ装置は、
− 前記光検出ユニットと前記光ユニットとの間に配置される第3のレンズを更に含み、
該第三のレンズは、前記後方散乱光を前記光検出ユニットに向かって集束させるよう構成される、
請求項1乃至11のうちのいずれか1項に記載のセンサ装置。 - 前記物体の前記流れ特性は、前記物体の流速及び前記物体の流れ方向のうちの少なくとも1つを含み、且つ/或いは、前記物体は血球を含み、前記素子は皮膚を含む、請求項1乃至12のうちのいずれか1項に記載のセンサ装置。
- 素子内を移動可能な物体の流れ特性を決定する方法であって、
発光ユニットによって前記素子に向かって光を放射すること、
光検出ユニットによって前記素子から後方散乱させられる光を検出すること、及び
前記検出される後方散乱光及び前記放射光を示す光に基づき、検出ユニットによって、前記素子内を移動可能な前記物体の前記流れ特性を決定することを含み、
前記素子の光入射素子部分及び前記素子の光検出素子部分は、光ユニットによって互いに空間的に離間させられ、前記光入射素子部分は、前記素子に対して入射する前記放射光と関連付けられ、前記光検出素子部分は、検出のために前記素子から後方散乱させられる前記後方散乱光と関連付けられる、
方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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EP11168498 | 2011-06-01 | ||
EP11168498.1 | 2011-06-01 | ||
PCT/IB2012/052557 WO2012164438A1 (en) | 2011-06-01 | 2012-05-22 | Determining a flow characteristic of an object being movable in an element |
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JP2014515298A true JP2014515298A (ja) | 2014-06-30 |
JP6182133B2 JP6182133B2 (ja) | 2017-08-16 |
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US (1) | US9091573B2 (ja) |
EP (1) | EP2713854B1 (ja) |
JP (1) | JP6182133B2 (ja) |
CN (1) | CN103561637B (ja) |
RU (1) | RU2622447C2 (ja) |
WO (1) | WO2012164438A1 (ja) |
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Also Published As
Publication number | Publication date |
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EP2713854B1 (en) | 2021-03-03 |
RU2622447C2 (ru) | 2017-06-15 |
US20140085635A1 (en) | 2014-03-27 |
CN103561637A (zh) | 2014-02-05 |
US9091573B2 (en) | 2015-07-28 |
JP6182133B2 (ja) | 2017-08-16 |
EP2713854A1 (en) | 2014-04-09 |
CN103561637B (zh) | 2016-05-18 |
WO2012164438A1 (en) | 2012-12-06 |
RU2013158865A (ru) | 2015-07-20 |
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