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1. 发明专利

AU3231593A FIBER OPTICAL MONITOR FOR DETECTING MOTION BASED ON CHANGES IN SPECKLE PATTERNS 未知
公开(公告)号：AU3231593A
公开(公告)日：1993-06-28
申请号：AU3231593
申请日：1992-12-04
申请人： ALAMED CORPORATION
发明人： ANTONIO B NAFARRATE , ERIC G RAWSON
IPC分类号： A61B5/0245 , A61B5/00 , A61B5/08 , A61B5/11 , A61B5/113 , G01P13/00

2. 发明申请

WO1996008197A1 FIBER OPTIC MOTION MONITOR FOR BREATH AND HEARTBEAT DETECTION AND A TECHNIQUE FOR PROCESSING BIOMEDICAL SENSOR SIGNALS CONTAMINATED WITH BODY MOVEMENT NOISE 审中-公开
标题翻译：用于呼吸和心脏检测的光纤运动监测器和用于处理身体运动噪声污染的生物医学传感器信号的技术
公开(公告)号：WO1996008197A1
公开(公告)日：1996-03-21
申请号：PCT/US1995011051
申请日：1995-09-12
申请人： ALAMED CORPORATION
发明人： ALAMED CORPORATION , STERN, Roger, A. , RAWSON, Eric, G. , BENNETT, Michael , FERRIS, Jonathan, R. , GIESE, Charles, F.
IPC分类号： A61B05/0205
CPC分类号： A61B5/7207 , A61B5/0205 , A61B5/1102 , A61B5/113 , A61B2562/0266 , G01P13/00 , G01P13/0086 , G01P15/093
摘要： A fiber optic motion monitor includes a light source (21) and an optical fiber waveguide (22) with a sensing section (4) intermediate an input end and an output end. A motion transmitting device (3) is coupled to the sensing section of the optical fiber waveguide for transmitting motion of a patient to the sensing section. A photodetector (23) is positioned to receive a speckle pattern of light which changes in response to movement of the patient and sensing section. The sensing section (4) of the optical fiber waveguide includes a plurality of loops which are positioned between a relatively flexible plate (2) and a resistance member (3) such that the loops will change shape upon movement of the patient due to the patient's breathing and/or heartbeat. Also disclosed is a technique for identifying portions of a modal noise signal that are contaminated by body movement noise and then disregarding these contaminated portions during further processing.
摘要翻译：光纤运动监视器包括具有在输入端和输出端之间的感测部分（4）的光源（21）和光纤波导（22）。运动发送装置（3）耦合到光纤波导的感测部分，用于将患者的运动传递到感测部分。光电检测器（23）被定位成接收响应于患者和感测部分的运动而变化的斑点图案。光纤波导的感测部分（4）包括多个环，其位于相对柔性的板（2）和阻力构件（3）之间，使得环路在病人移动时由于患者的移动而改变形状呼吸和/或心跳。还公开了一种用于识别由身体运动噪声污染然后在进一步处理期间忽略这些污染部分的模态噪声信号的部分的技术。

3. 发明申请

WO1994025975A1 MOTION MONITOR WITH AN AUDIBLE OUTPUT 审中-公开
标题翻译：运动监视器具有可视输出
公开(公告)号：WO1994025975A1
公开(公告)日：1994-11-10
申请号：PCT/US1994004064
申请日：1994-04-21
申请人： ALAMED CORPORATION
发明人： ALAMED CORPORATION , RAWSON, Eric, G.
IPC分类号： H01J05/16
CPC分类号： A61B5/6892 , A61B5/1126 , A61B5/113 , A61B5/7415 , G01P13/00
摘要： A motion monitor which produces audible sound representative of motions of a subject or object being monitored, including a carrier (21), an optical fiber (18) carried by the carrier, a laser source (14) for injecting a laser beam in the optical fiber to produce a speckle light pattern at the output of the optical fiber, a photodetector (16) for producing an output signal representative of modal noise developed in the optical fiber due to physical movement of the fiber, an amplifier (42) for amplifying the output of the photodetector, and a loudspeaker (46) which converts the amplified signals to audible sound representative of the modal noise at the fiber output. Optionally, the signals produced by the photodetector are shifted to a higher frequency range, e.g., the 500-700 Hz range, thereby to enable use of conventional inexpensive electronics and efficient loudspeakers. In one embodiment involving monitoring of a person, the frequency shifted output of the photodetector is transmitted to a remote location for remote monitoring of movements of the person. In another embodiment, the loudspeaker is mounted on the carrier and produces sound mimicking movement of the subject or object to which the carrier is attached.
摘要翻译：一种运动监视器，其产生表示被监视对象或物体的运动的声音，包括载体（21），由所述载体承载的光纤（18），激光源（14），用于将激光束注入所述光学光纤在光纤的输出端产生斑点光图案，用于产生表示由于光纤的物理移动而在光纤中产生的模态噪声的输出信号的光电检测器（16），用于放大光纤的放大器光电检测器的输出和扬声器（46），其将放大的信号转换成表示光纤输出端的模态噪声的声音。可选地，由光电检测器产生的信号被移动到更高的频率范围，例如500-700Hz的范围，从而能够使用传统廉价的电子设备和有效的扬声器。在涉及对人的监视的一个实施例中，光电检测器的频移输出被发送到远程位置，用于远程监视人的移动。在另一个实施例中，扬声器安装在载体上并产生模仿运动员所附着的被摄体或物体的声音。

4. 发明申请

WO1993011553A1 FIBER OPTICAL MONITOR FOR DETECTING MOTION BASED ON CHANGES IN SPECKLE PATTERNS 审中-公开
标题翻译：用于基于样条图案变化检测运动的光纤监视器
公开(公告)号：WO1993011553A1
公开(公告)日：1993-06-10
申请号：PCT/US1992010334
申请日：1992-12-04
申请人： ALAMED CORPORATION
发明人： ALAMED CORPORATION , NAFARRATE, Antonio, B. , RAWSON, Eric, G.
IPC分类号： H01J40/14
CPC分类号： A61B5/6892 , A61B5/02444 , A61B5/113 , A61B5/7239 , G01P13/00 , Y10S128/925
摘要： A fiber optic body motion monitor in which light (1) is transmitted through an optical fiber waveguide physically coupled to a body being monitored, and modal noise at the output of the optical fiber waveguide (2) is applied to a photodetector (5), filtered, rectified and analyzed to detect breathing and heartbeats. Detection of breathing is performed by low-pass filtering the rectified and filtered signal, and adaptive thresholding of the low-pass filtered signal. A similar but separate technique is used to detect heartbeats. In one embodiment, reliability of detection is enhanced by reducing the number of speckles of light applied to the photodetector to approximately 50 %, thereby to maximize modal noise current. In another embodiment the photodetector (5) has two halves separately illuminated by approximately two-thirds of the light from the optical fiber waveguide (2). Outputs of the photodetector (5) halves are applied to the positive and negative inputs of an operational amplifier (61), whereby common mode noise is eliminated and modal noise current and therefore sensitivity of modal noise detection increased.

5. 发明授权

US5291013A Fiber optical monitor for detecting normal breathing and heartbeat motion based on changes in speckle patterns 失效
标题翻译：用于根据斑点图案的变化检测正常呼吸和心跳运动的光纤监视器
公开(公告)号：US5291013A
公开(公告)日：1994-03-01
申请号：US975853
申请日：1992-11-13
申请人： Antonio B. Nafarrate , Eric G. Rawson
发明人： Antonio B. Nafarrate , Eric G. Rawson
IPC分类号： A61B5/0245 , A61B5/00 , A61B5/08 , A61B5/11 , A61B5/113 , G01P13/00 , H01J40/14
CPC分类号： A61B5/6892 , A61B5/02444 , A61B5/113 , G01P13/00 , A61B5/7239 , Y10S128/925
摘要： A fiber optic body motion monitor in which light is transmitted through an optical fiber waveguide physically coupled to a body being monitored, and modal noise at the output of the optical fiber waveguide is applied to a photodetector filtered, rectified and analyzed to detect breathing and heartbeats. Detection of breathing is performed by low-pass filtering the rectified and filtered signal, and adaptive thresholding of the low-pass filtered signal. A similar but separate technique is used to detect heartbeats. In one embodiment, reliability of detection is enhanced by reducing the number of speckles of light applied to the photodetector to approximately 50%, thereby to maximize modal noise current. In another embodiment the photodetector has two halves separately illuminated by approximately two-thirds of the light from the optical fiber waveguide. Outputs of the photodetector halves are applied to the positive and negative inputs of an operational amplifier, whereby common mode noise is eliminated and modal noise current and therefore sensitivity of modal noise detection increased.
摘要翻译：一种光纤体运动监测器，其中光通过物理耦合到被监测的身体的光纤波导传输，并且在光纤波导的输出端处的模态噪声被施加到经过滤波，整流和分析以检测呼吸和心跳的光电探测器。通过对经整流和滤波的信号进行低通滤波和低通滤波信号的自适应阈值来进行呼吸检测。使用类似但单独的技术来检测心跳。在一个实施例中，通过将施加到光电检测器的光的斑点数减少到大约50％来增强检测的可靠性，从而最大化模态噪声电流。在另一个实施例中，光电检测器具有由大约三分之二来自光纤波导的光分开照明的两半。光电检测器半部的输出被施加到运算放大器的正和负输入，由此消除共模噪声，并且模态噪声电流因此增加了模态噪声检测的灵敏度。

6. 发明授权

US5212379A Fiber optical monitor for detecting motion based on changes in speckle patterns 失效
标题翻译：光纤监视器，用于根据斑点图案的变化检测运动
公开(公告)号：US5212379A
公开(公告)日：1993-05-18
申请号：US802868
申请日：1991-12-06
申请人： Antonio B. Nafarrate , Eric G. Rawson
发明人： Antonio B. Nafarrate , Eric G. Rawson
IPC分类号： A61B5/113 , G01P13/00
CPC分类号： A61B5/6892 , A61B5/113 , G01P13/00
摘要： A motion monitor using coherent or partially coherent light passing through an optical fiber which is in contact or close to an object whose motion is to be monitored. An optical speckle pattern is formed near the output of the optical fiber which pattern changes as the fiber moves in response to the motion of the object being monitored. An optical detector monitors all or a part of the speckle pattern and electronically processes the optical detector's electrical output signals to derive information on the status of the object being monitored.
摘要翻译：使用相干或部分相干光通过光纤的运动监视器，该光纤接触或靠近要监视其运动的物体。在光纤的输出端附近形成光学斑纹图案，该图案随着光纤响应被监视物体的运动而移动而改变。光学检测器监测散斑图案的全部或一部分，并且电子处理光学检测器的电输出信号以得到关于被监测物体的状态的信息。

7. 发明授权

US5436444A Multimode optical fiber motion monitor with audible output 失效
标题翻译：具有声音输出的多模光纤运动监视器
公开(公告)号：US5436444A
公开(公告)日：1995-07-25
申请号：US53687
申请日：1993-04-29
申请人： Eric G. Rawson
发明人： Eric G. Rawson
IPC分类号： A61B5/11 , A61B5/113 , G01P13/00 , H01J40/14
CPC分类号： A61B5/6892 , A61B5/1126 , A61B5/113 , A61B5/7415 , G01P13/00
摘要： A motion monitor which produces audible sound representative of motions of a subject or object being monitored, including a carrier, an optical fiber carried by the carrier, a laser source for injecting a laser beam in the optical fiber to produce a speckle light pattern at the output of the optical fiber, a photodetector for producing an output signal representative of modal noise developed in the optical fiber due to physical movement of the fiber, an amplifier for amplifying the output of the photodetector, and a loudspeaker which converts the amplified signals to audible sound representative of the modal noise at the fiber output. Optionally, the signals produced by the photodetector are shifted to a higher frequency range, e.g., the 500-700 Hz range, thereby to enable use of conventional inexpensive electronics and efficient loudspeakers. In one embodiment involving monitoring of a person, the frequency shifted output of the photodetector is transmitted to a remote location for remote monitoring of movements of the person. In another embodiment, the loudspeaker is mounted on the carrier and produces sound mimicking movement of the subject or object to which the carrier is attached.
摘要翻译：一种运动监视器，其产生表示被监视对象或物体的运动的声音，包括载体，由载体承载的光纤，用于在光纤中注入激光束以在该光纤中产生斑点光图案的激光源光纤的输出，用于产生表示由于光纤的物理移动而在光纤中产生的模式噪声的输出信号的光电检测器，用于放大光电检测器的输出的放大器和将放大的信号转换成可听见的扬声器声音代表了光纤输出的模态噪声。可选地，由光电检测器产生的信号被转移到更高的频率范围，例如500-700Hz的范围，从而能够使用传统廉价的电子设备和有效的扬声器。在涉及人的监视的一个实施例中，光电检测器的频移输出被传送到远程位置，用于远程监视人的移动。在另一个实施例中，扬声器安装在载体上并且产生模仿运动员所附着的被摄体或物体的声音。

8. 发明公开

EP0615654A1 FIBER OPTICAL MONITOR FOR DETECTING MOTION BASED ON CHANGES IN SPECKLE PATTERNS 失效
标题翻译：光纤移动监视器ON SPECKLEBILDERN BASED的转变。
公开(公告)号：EP0615654A1
公开(公告)日：1994-09-21
申请号：EP93900737.0
申请日：1992-12-04
申请人： ALAMED CORPORATION
发明人： NAFARRATE, Antonio, B. , RAWSON, Eric, G.
IPC分类号： A61B5 , G01P13
CPC分类号： A61B5/6892 , A61B5/02444 , A61B5/113 , A61B5/7239 , G01P13/00 , Y10S128/925
摘要： Dans un moniteur à fibres optiques observant les mouvements du corps, de la lumière (1) est transmise à travers un guide d'ondes à fibres optiques couplé à un corps en cours d'examen, et du bruit modal en sortie dudit guide d'ondes (2) est appliqué à un photodétecteur (5), filtré, redressé et analysé pour permettre la détection de la respiration et des battements du coeur. La détection de la respiration s'effectue par un filtrage passe-bas du signal redressé et filtré, et par un seuillage adaptatif du signal filtré passe-bas. Une technique semblable mais distincte s'utilise pour détecter les battements du coeur. Dans un mode de réalisation, la fiabilité de la détection est améliorée par la réduction, à environ 50 %, du nombre des taches de lumière appliquées au photodétecteur, maximisant ainsi le courant de bruit modal. Dans un autre mode de réalisation, le photodétecteur (5) comporte deux moitiés éclairées séparément par approximativement deux tiers de la lumière provenant du guide d'ondes à fibres optiques (2). Des signaux de sortie des moitiés du photodétecteur (5) sont appliqués aux signaux d'entrée positifs et négatifs d'un amplificateur opérationnel (61), éliminant ainsi le bruit en mode commun et augmentant le courant de bruit modal et donc la sensibilité de détection de ce dernier.

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