MICROBENDING OF OPTICAL FIBERS FOR REMOTE FORCE MEASUREMENT
    11.
    发明申请
    MICROBENDING OF OPTICAL FIBERS FOR REMOTE FORCE MEASUREMENT 审中-公开
    用于远程测量的光纤的微观结构

    公开(公告)号:WO1983000744A1

    公开(公告)日:1983-03-03

    申请号:PCT/US1982001162

    申请日:1982-08-26

    Applicant: TRW INC.

    CPC classification number: G01L1/245

    Abstract: A system for remote measurement of structural forces includes a plurality of microbend transducers (14) mounted along the length of the structure (12) for microbending an optical fiber (16) in response to structural forces, such as stress acting upon an oil or gas pipeline or the like. An optical time domain reflectometer (OTDR) (18) has a light source (46) for launching a pulsed optical signal passage through the fiber and a photodetector (56) for sensing as a function of time the intensity of backscattered light reflected back through the fiber, wherein this sensed time function is correlated directly with discrete longitudinal positions along the length of the fiber and the structure. When one or more of the microbend transducers is activated to induce a microbend in the fiber response to localized forces acting upon the structure, a portion of the backscattered light is lost at the microbend. This attenuation in backscattered light intensity is sensed quantitatively and positionally identified by the photodetector. Specific preferred constructions for microbend transducers and system arrangements particularly adapted for detecting structurally strain in an oil or gas pipeline are disclosed.

    Abstract translation: 用于远程测量结构力的系统包括沿着结构(12)的长度安装的多个微弯曲换能器(14),用于响应于结构力(例如作用在油或气体上的应力)而使光纤(16)微弯曲 管线等。 光学时域反射计(OTDR)(18)具有用于发射通过光纤的脉冲光信号通道的光源(46)和用于根据时间的方式感测作为时间的函数的反射散射光的强度 光纤,其中该感测时间函数直接与沿着光纤和结构的长度的离散纵向位置相关联。 当一个或多个微弯变换器被激活以在纤维响应中产生微弯曲以对作用在结构上的局部力时,反向散射光的一部分在微弯处丧失。 反射散射光强度中的衰减由光电检测器定量和位置地识别。 公开了用于微弯传感器和特别适用于检测油或气管线中的结构应变的系统布置的特定优选结构。

    VITAL SIGNS FIBER OPTIC SENSOR SYSTEMS AND METHODS
    12.
    发明申请
    VITAL SIGNS FIBER OPTIC SENSOR SYSTEMS AND METHODS 审中-公开
    VITAL SIGNS光纤传感器系统和方法

    公开(公告)号:WO2016054294A1

    公开(公告)日:2016-04-07

    申请号:PCT/US2015/053369

    申请日:2015-09-30

    Applicant: DARMA INC.

    Inventor: HU, Junhao

    Abstract: An intensity-based, micro-bending optical fiber sensor is disclosed herein, which is configured to acquire clean, stable, and reliable vital sign signals. Related systems and methods for vital sign monitoring are also provided herein. The sensor of various embodiments includes a multi-mode optical fiber, an LED light source, an LED driver, a receiver, and a single layer deformer structure. In various embodiments, the optical fiber and single layer deformer structure of the sensor are selected to meet specific parameters necessary to achieve a level of reliability and sensitivity needed to successfully monitor vital signs. In some embodiments, a specific sizing relationship exists between the optical fiber and the single layer deformer structure. In some embodiments, the sensor is configured to acquire ballistocardiograph waveforms.

    Abstract translation: 本文公开了一种基于强度的微弯曲光纤传感器,其被配置为获取清洁,稳定和可靠的生命体征信号。 本文还提供了用于生命体征监测的相关系统和方法。 各种实施例的传感器包括多模光纤,LED光源,LED驱动器,接收器和单层变形器结构。 在各种实施例中,选择传感器的光纤和单层变形器结构以满足实现成功监测生命体征所需的可靠性和灵敏度水平所必需的特定参数。 在一些实施例中,在光纤和单层变形器结构之间存在特定的尺寸关系。 在一些实施例中,传感器被配置为获取心轴图像波形。

    PRINZIPAUFBAU FÜR FASEROPTISCHE BELASTUNGSSENSOREN
    14.
    发明申请
    PRINZIPAUFBAU FÜR FASEROPTISCHE BELASTUNGSSENSOREN 审中-公开
    原理构造的用于光纤传感器LOAD

    公开(公告)号:WO2003016954A2

    公开(公告)日:2003-02-27

    申请号:PCT/DE2002/002875

    申请日:2002-08-05

    Inventor: PLAMPER, Jörg

    IPC: G02B

    CPC classification number: G01L1/245

    Abstract: Die Erfindung betrifft einen Prinzipiellen Aufbau für faseroptische Belastungssensoren, der in vielfältiger Weise ausgestaltet und abgewandelt werden kann. Er umfasst eine Stütz- und Störstruktur (1) mit in einer Ebene angeordneten stabförmigen Elementen, welche in periodischen Abständen von mindestens einer Lichtleitfaser (2) gekreuzt werden, wobei die Faser abwechselnd über und unter den Elementen verläuft. Die Stütz- und Störstruktur ist dabei so ausgeführt, dass bei der Herstellung kein Ende der Lichtleitfaser zwischen den stabförmigen Elementen hindurchgeführt zu werden braucht. Optional können Stütz- und Störstruktur und Lichtleitfaser von einer elastischen Umhüllung (4) und/oder von einem Elastomerkörper (3) umgeben sein.

    Abstract translation: 本发明涉及用于可以以各种方式被配置和修改光纤载荷传感器的基本结构。 它包括支持体和干涉结构(1),其具有设置在一个平面棒状元件,其在至少一个光纤(2),其中所述纤维运行交替穿过所述元件下的规则间隔划线。 的支持和干扰结构被设计为使得需要通过在生产过程中的棒状元件之间的光纤的端部通过。 可选择支持和模式噪声和光学纤维可以通过一个弹性套管(4)和/或由弹性体所包围(3)。

    BED LATCH POSITION DETECTOR AND METHOD
    15.
    发明申请
    BED LATCH POSITION DETECTOR AND METHOD 审中-公开
    BED锁定位置检测器和方法

    公开(公告)号:WO01062151A1

    公开(公告)日:2001-08-30

    申请号:PCT/US2001/005780

    申请日:2001-02-23

    CPC classification number: A61B6/0457 G01L1/245

    Abstract: A bed (10) is provided for supporting a patient thereon. Bed (10) includes a first bed component (14) that is movable relative to a second bed component (16). Bed (10) further includes a position detector (18) configured to detect the position of second bed component (16) relative to first bed component (14).

    Abstract translation: 提供床(10)以在其上支撑患者。 床(10)包括可相对于第二床部件(16)移动的第一床部件(14)。 床(10)还包括位置检测器(18),其被配置为相对于第一床部件(14)检测第二床部件(16)的位置。

    FLEXIBLE FIBER OPTIC MICROBEND DEVICE, SENSORS, AND METHOD OF USE
    16.
    发明申请
    FLEXIBLE FIBER OPTIC MICROBEND DEVICE, SENSORS, AND METHOD OF USE 审中-公开
    柔性光纤微型器件,传感器及其使用方法

    公开(公告)号:WO01053787A1

    公开(公告)日:2001-07-26

    申请号:PCT/US2001/002013

    申请日:2001-01-19

    CPC classification number: G02B6/3628 G01L1/245 G02B6/14 G02B6/266

    Abstract: A flexible microbend device for attachment to an optical fiber is provided. The device comprises an upper bending element grid having at least one flexible element and a lower bending element grid having at least one flexible element. The upper bending element grid alternately engages the lower bending element grid. The flexible microbend device is attached to an optical fiber to form a sensor. The sensor may be either embedded in a host material or attached to a structure to detect various stresses or strains.

    Abstract translation: 提供了用于附接到光纤的柔性微弯装置。 该装置包括具有至少一个柔性元件的上部弯曲元件格栅和具有至少一个柔性元件的下部弯曲元件网格。 上部弯曲元件格栅交替地接合下部弯曲元件格栅。 柔性微弯装置连接到光纤以形成传感器。 传感器可以嵌入主体材料中或附着于结构以检测各种应力或应变。

    OPTICAL FIBRE STRESS SENSOR, METHOD FOR MAKING SAME AND LOAD SENSING DEVICE USING SAME
    17.
    发明申请
    OPTICAL FIBRE STRESS SENSOR, METHOD FOR MAKING SAME AND LOAD SENSING DEVICE USING SAME 审中-公开
    光纤应力传感器,其制造方法和使用相同的负载感测装置

    公开(公告)号:WO99049287A1

    公开(公告)日:1999-09-30

    申请号:PCT/EP1999/001818

    申请日:1999-03-18

    CPC classification number: G01L1/245

    Abstract: The invention concerns an optical fibre sensor (14) for measuring stress exerted on a substrate, comprising a support (1) bearing a multimode optical fibre (14) wherein transmitted light is attenuated when the fibre (14) bending or microbending angle (16) is modified by the effect of the stress applied, said support (1) having high and lesser stress zones when it is bent to adapt itself to the curved substrate whereon it is set. The invention is characterised in that the support (1) bearing the optical fibre (14) has a periodic array of perforations (12) wherein the optical fibre (14) is threaded, the period and cyclic ratio of the fibre (14) microbending (16) remaining constant, said perforations (12) being provided in the support (1) high stress zones along preferred axes defined by said support (1) intersection with a plane containing the bending radius (R) and perpendicular to said support (1) bending radius, and said perforations (12) being provided along non-preferred axes in the support lesser stress zones.

    Abstract translation: 本发明涉及一种用于测量施加在基板上的应力的光纤传感器(14),其包括支撑多轴光纤(14)的支撑件(1),其中当纤维(14)弯曲或微弯曲角(16)时透射光衰减, 通过施加的应力的作用改变,所述支撑件(1)弯曲时具有高应力区域和较小的应力区域,以使其适应其设置的弯曲基板。 本发明的特征在于,承载光纤(14)的支撑件(1)具有周期性的穿孔阵列(12),其中光纤(14)是螺纹的,纤维(14)微弯曲(14)的周期和循环比 所述穿孔(12)在所述支撑件(1)中设置有由所述支撑件(1)与包含所述弯曲半径(R)并且垂直于所述支撑件(1)的平面相交的优选轴线的高应力区域, 弯曲半径,并且所述穿孔(12)沿着支撑较小应力区域中的非优选轴线设置。

    PRESSURE SENSITIVE OPTICAL DEVICE AND PRESENCE DETECTION FLOOR
    18.
    发明申请
    PRESSURE SENSITIVE OPTICAL DEVICE AND PRESENCE DETECTION FLOOR 审中-公开
    压力敏感的光学设备和存在检测地板

    公开(公告)号:WO1996034262A1

    公开(公告)日:1996-10-31

    申请号:PCT/FR1996000436

    申请日:1996-03-22

    Inventor: HONEYWELL

    CPC classification number: G01L1/245 G08B13/10

    Abstract: The device comprises a series of segments (2a, 2b, 2c) of measurement optical fibre (2) and a series of segments (3a, 3b) of strain fibre (3) extending transversaly to the longitudinal direction of the segments of measurement optical fibre; the segments of strain fibre are alternately arranged on either side of the segments of measurement optical fibre; the fibre segments of at least one series are covered with a protection member (4) providing for a relative displacement of the protection member and the coated fibre segments.

    Abstract translation: 该装置包括测量光纤(2)的一系列段(2a,2b,2c)和一系列沿着测量光纤段的纵向方向延伸的应变光纤(3)的段(3a,3b) ; 应变纤维的片段交替地布置在测量光纤段的两侧; 至少一个系列的纤维段被保护构件(4)覆盖,保护构件(4)提供保护构件和涂覆的纤维段的相对位移。

    PRESSURE OR STRAIN SENSITIVE OPTICAL FIBER
    19.
    发明申请
    PRESSURE OR STRAIN SENSITIVE OPTICAL FIBER 审中-公开
    压敏或应变敏感光纤

    公开(公告)号:WO1989004006A1

    公开(公告)日:1989-05-05

    申请号:PCT/US1987002785

    申请日:1987-10-29

    Abstract: Pressure sensitive optical fiber (11) having core means (15), at least a portion of which has a predetermined refractive index for transmitting light therethrough, cladding means adjacent the core means having a refractive index which is less than that of the core means, and concentric light transmissive means (22) adjacent the cladding means having refractive index which is greater than that of the cladding means and through which light passes in proportion to the amount of stress or strain induced in the fiber. Also, pressure sensors and methods for measuring forces or perturbations utilizing such fiber.

    Abstract translation: 具有芯装置(15)的压敏光纤(11),其至少一部分具有用于透射光的预定折射率,邻近芯装置的包层装置具有小于芯装置的折射率的折射率, 以及与包层装置相邻的同心光透射装置(22),其折射率大于包层装置的折射率,光通过该光纤与光纤中引起的应力或应变的量成比例。 此外,压力传感器和用于测量使用这种纤维的力或扰动的方法。

    OPTICAL DEVICE FOR STRAIN DETECTION, METHOD FOR MEASURING THE STRAIN BY MEANS OF SAID DEVICE AND THEIR APPLICATION TO SCALES
    20.
    发明申请
    OPTICAL DEVICE FOR STRAIN DETECTION, METHOD FOR MEASURING THE STRAIN BY MEANS OF SAID DEVICE AND THEIR APPLICATION TO SCALES 审中-公开
    用于菌株检测的光学装置,用于通过装置的装置测量菌株的方法及其对标准物的应用

    公开(公告)号:WO1986005273A1

    公开(公告)日:1986-09-12

    申请号:PCT/FR1986000071

    申请日:1986-03-05

    Inventor: SOPHA PRAXIS

    CPC classification number: G01L1/245 G01L1/243 Y10S177/06

    Abstract: Optical device and method for strain detection. The device comprises at least one optical fiber (1) arranged so as to form a network (2). Light emitting means (E) arranged at one end of the fiber and receiver means (R) arranged at the other end enable to supply an information relative to the light intensity transmitted by the fiber or fibers in the presence of strain and a measurement corresponding to said strain. Application to weighing apparatus and pressure chart takings.

    Abstract translation: 光学装置及应变检测方法。 该装置包括至少一个布置成形成网络(2)的光纤(1)。 布置在光纤的一端的发光装置(E)和布置在另一端的接收装置(R)能够提供关于在存在应变的情况下由纤维或纤维传输的光强度的信息,并且对应于 说应变 应用于称重设备和压力表。

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