AIRPORT MONITORING SYSTEM
    1.
    发明申请

    公开(公告)号:WO2018106113A2

    公开(公告)日:2018-06-14

    申请号:PCT/NL2017/050821

    申请日:2017-12-07

    Abstract: The airport monitoring system (1) for monitoring an airport territory (5), comprises an airport territory surface and an optic sensor system (70, 72a,...,72e, 100). The airport territory surface has a traffic infrastructure to support conveyance elements of a vehicle (90), e.g. an aircraft or a service vehicle, therewith allowing movements of the vehicle over the airport territory surface. The optic sensor system (70, 72a,...,72e, 100), includes an interrogator module (100) and fiber optic sensors (72a,...,72e) coupled thereto. The fiber optic sensors are arranged below the airport territory surface and have a respective plurality of optic strain-sensor elements (722) with mutually different optical characteristics. The interrogator module (100) transmits optical interrogation signals into the fiber optic sensors and receives respective response optical signals that have been modulated by the fiber optic sensors based on their optical characteristics. The interrogator module (100) identifies changes in the optical characteristics of the received respective response optical signals resulting from strains induced in the optic strain-sensor elements as a result of pressure exerted by a conveyance element (92) of a vehicle (90) on the airport territory surface (51) near a fiber optic sensor.

    EMBANKMENT MONITORING SYSTEM
    2.
    发明申请

    公开(公告)号:WO2018101828A1

    公开(公告)日:2018-06-07

    申请号:PCT/NL2017/050802

    申请日:2017-12-01

    Abstract: The embankment monitoring system comprises an optic sensor chain (10) and an interrogator (20). The optic sensor chain (10) comprises a series of intrinsic fiber optic sensors (12) that are mutually spaced with respect to each other in a longitudinal direction of the optic sensor chain and at least one optic fiber (14) to optically connect the plurality of intrinsic fiber optic sensors to the interrogator. The interrogator is configured to issue an optic interrogation signal and the intrinsic fiber optic sensors are configured to respond to the optic interrogation signal with an optic measurement signal that is indicative for at least one physical parameter (Pi) sensed by the intrinsic fiber optic sensors. The interrogator is further configured to process the optic measurement signals of the intrinsic fiber optic sensors to estimate a depth (d) as a function of a position (p) along said optic sensor chain (10).

    SENSOR SYSTEM AND METHOD FOR MONITORING A POWERTRAIN
    3.
    发明申请
    SENSOR SYSTEM AND METHOD FOR MONITORING A POWERTRAIN 审中-公开
    用于监测动力传动系统的传感器系统和方法

    公开(公告)号:WO2016182430A1

    公开(公告)日:2016-11-17

    申请号:PCT/NL2015/050319

    申请日:2015-05-08

    Abstract: A sensor system (10) and method for monitoring a powertrain (20) having a drive shaft (1). The sensor system (10) comprises an optical fibre (2) with a strain sensitive element (3). According to one aspect, a connection structure (4) is configured to hold at least a part of the optical fibre (2) with the strain sensitive element (3) at a radial distance (R2-R1) remote from the drive shaft (1) for amplifying the strain (S2) on the strain sensitive element (3) with respect to the strain (S1) on the drive shaft (1). According to a further aspect, at least three respective lengths of one or more optical fibres follow parallel, e.g. helical, paths with respect to each other to distinguish different strain forces.

    Abstract translation: 一种用于监测具有驱动轴(1)的动力系(20)的传感器系统(10)和方法。 传感器系统(10)包括具有应变敏感元件(3)的光纤(2)。 根据一个方面,一种连接结构(4)构造成将远离驱动轴(1)的径向距离(R2-R1)的应变敏感元件(3)保持在光纤(2)的至少一部分上 ),用于相对于驱动轴(1)上的应变(S1)放大应变敏感元件(3)上的应变(S2)。 根据另一方面,一个或多个光纤的至少三个相应长度是平行的,例如, 相对于彼此的螺旋形路径,以区分不同的应变力。

    BRIDGE BASED WEIGH-IN-MOTION SYSTEM
    4.
    发明申请

    公开(公告)号:WO2020067889A2

    公开(公告)日:2020-04-02

    申请号:PCT/NL2019/050639

    申请日:2019-09-24

    Abstract: Bridge based weigh-in-motion system A weigh-in-motion system for sensing dynamic strain variations in a bridge, comprising a plurality of strain sensors and a plurality of fixtures arranged as a plurality of sensing nodes; wherein each sensing node comprises: a first one of the fixtures comprising a first connector part and a first base attachable to a first location on the bridge; a second one of the fixtures comprising a second connector part and a second base attachable to a second location on the bridge; wherein the first location and the second location are separated by a distance B and define therebetween a measurement section; and one of the strain sensors that spans between and is fixed to the first and second connector parts by rigid fixings, separated by a distance A and defining therebetween a sensing section, so as to thereby form a spring connection between the first and second connector parts, the spring connection being extended or compressed to enable the strain sensor to provide an output signal dependent on the relative position of the first and second connector parts.

    SENSOR MODULE FOR LOAD MONITORING
    5.
    发明申请

    公开(公告)号:WO2019212348A1

    公开(公告)日:2019-11-07

    申请号:PCT/NL2019/050260

    申请日:2019-05-02

    Abstract: The sensor module (1) comprises an assembly of a carrier (20) of an elastic material and at least a first and a second longitudinal optic fiber section (11a, lib) with a first and a second fiber optic sensor element (12a, 12b). The first and a second longitudinal optic fiber section (11a, lib) are mounted to the carrier in a first and a second mutually different directions (x, y) at a respective pair of mutually opposite ends (13al, 13a2; 13b 1, 13b2). The sensor module is configured to receive a load action on a first load receiving side and to be restrained on at least a second side such as to enable a deformation of the carrier (20) by the load action in said a first and a second mutually different directions (x, y). The sensor module facilitates a temperature compensated measurement of the load action.

    OCEAN BOTTOM SENSING SYSTEM AND METHOD
    6.
    发明申请
    OCEAN BOTTOM SENSING SYSTEM AND METHOD 审中-公开
    海底传感系统及方法

    公开(公告)号:WO2017010875A1

    公开(公告)日:2017-01-19

    申请号:PCT/NL2016/050508

    申请日:2016-07-08

    CPC classification number: G01V1/201 G01H9/004 G01V1/226 G01V1/3852

    Abstract: A system for ocean bottom sensing for performing geological survey. Herein the system comprising a cable further comprising a cable jacket (9), at least one optical fiber (6), and a plurality of detectors enclosed by the cable jacket (9). The latter including at least a first and a second detector (1, 2), the at least first and second detector (1, 2) comprising at least one intrinsic fiber optic sensor (3x, 3y, 3z, 3h, 3g, 3t). The detectors are communicatively connected to the at least one optical fiber (6) for allowing interrogation of the intrinsic fiber optic sensors (3x, 3y, 3z, 3h, 3g, 3t) and the cable jacket (9) has substantially a same cross-sectional diameter (D) and same outer shape at the at least first and second detector (1,2) and in between said first and second detector (1,2).

    Abstract translation: 用于执行地质勘测的海底探测系统。 这里,系统包括还包括电缆护套(9),至少一个光纤(6)和由电缆护套(9)包围的多个检测器的电缆。 后者包括至少第一和第二检测器(1,2),所述至少第一和第二检测器(1,2)包括至少一个本征光纤传感器(3x,3y,3z,3h,3g,3t) 。 检测器通信地连接到至少一个光纤(6),用于允许本征光纤传感器(3x,3y,3z,3h,3g,3t)的询问,并且电缆护套(9)具有基本上相同的横截面 在所述至少第一和第二检测器(1,2)处和所述第一和第二检测器(1,2)之间的截面直径(D)和相同的外形。

    OPTICAL SENSOR DEVICE, SENSOR APPARATUS, CABLE AND METHOD OF MANUFACTURING
    7.
    发明申请
    OPTICAL SENSOR DEVICE, SENSOR APPARATUS, CABLE AND METHOD OF MANUFACTURING 审中-公开
    光传感器装置,传感器装置,电缆及其制造方法

    公开(公告)号:WO2016182431A1

    公开(公告)日:2016-11-17

    申请号:PCT/NL2015/050320

    申请日:2015-05-08

    Abstract: The invention is directed at an optical sensor device, comprising a sensing element for receiving an input action, an optical fiber comprising an intrinsic fiber optic sensor, and a transmission structure arranged for exerting a sensing action on the optical fiber in response to the input action, wherein the optical fiber is connected to a reference body and to the transmission structure with first and second connecting parts, the first and second connecting parts being located on either side of the intrinsic fiber optic sensor, wherein the transmission structure comprises a bi-stable spring having a first and a second stable deflection position and inbetween a negative stiffness range around an unstable equilibrium position, and wherein the optical fiber is pre-stressed thereby acting as a spring having a first spring constant of positive value to counteract a spring action of the bi-stable spring.

    Abstract translation: 本发明涉及一种光学传感器装置,其包括用于接收输入动作的感测元件,包括本征光纤传感器的光纤和布置成响应于输入动作而对光纤施加感测动作的传输结构 ,其中所述光纤与第一和第二连接部分连接到参考体和所述传输结构,所述第一和第二连接部分位于所述本征光纤传感器的任一侧,其中所述传输结构包括双稳态 弹簧具有第一和第二稳定偏转位置,并且在不稳定平衡位置周围的负刚度范围之间,并且其中所述光纤被预应力,由此用作具有正值的第一弹簧常数的弹簧以抵消弹性作用 双稳的春天。

    DEFORMABLE FRAME FOR AN ACCELEROMETER
    8.
    发明申请

    公开(公告)号:WO2019117713A1

    公开(公告)日:2019-06-20

    申请号:PCT/NL2018/050830

    申请日:2018-12-11

    CPC classification number: G01P15/093

    Abstract: A deformable frame (10) for a fiber optic accelerometer (100). The frame (10) is formed by an interconnected stack of modular plates (10m, 10t). Attachment sections (13, 14, 15) are provided for attachment to an external structure (20) whose acceleration (A) is to be measured. At least one inertial section (16) is configured to allow a relative inertial motion (M) of the frame's inertial mass with respect to the one or more accelerated attachment sections (13, 14, 15). Transmission arms (11, 12) are pivotably attached to respective bridge sections (17,18) between the inertial section (16) an attachment section (15) such that the relative inertial motion (M) of the inertial mass in a sensing direction (Y) causes a transverse motion (S) in each of the transmission arms (11, 12) for stretching and/or compressing an optical fiber (1) with an optical strain sensor (2) attached between respective fiber attachment points (11a, 12a) on said transmission arms (11,12).

    AIRPORT MONITORING SYSTEM
    9.
    发明申请

    公开(公告)号:WO2018106113A3

    公开(公告)日:2018-06-14

    申请号:PCT/NL2017/050821

    申请日:2017-12-07

    Abstract: The airport monitoring system (1) for monitoring an airport territory (5), comprises an airport territory surface and an optic sensor system (70, 72a,...,72e, 100). The airport territory surface has a traffic infrastructure to support conveyance elements of a vehicle (90), e.g. an aircraft or a service vehicle, therewith allowing movements of the vehicle over the airport territory surface. The optic sensor system (70, 72a,...,72e, 100), includes an interrogator module (100) and fiber optic sensors (72a,...,72e) coupled thereto. The fiber optic sensors are arranged below the airport territory surface and have a respective plurality of optic strain-sensor elements (722) with mutually different optical characteristics. The interrogator module (100) transmits optical interrogation signals into the fiber optic sensors and receives respective response optical signals that have been modulated by the fiber optic sensors based on their optical characteristics. The interrogator module (100) identifies changes in the optical characteristics of the received respective response optical signals resulting from strains induced in the optic strain-sensor elements as a result of pressure exerted by a conveyance element (92) of a vehicle (90) on the airport territory surface (51) near a fiber optic sensor.

    OPTICAL SENSOR DEVICE, SENSOR APPARATUS AND CABLE
    10.
    发明申请
    OPTICAL SENSOR DEVICE, SENSOR APPARATUS AND CABLE 审中-公开
    光传感器装置,传感器装置和电缆

    公开(公告)号:WO2016182428A1

    公开(公告)日:2016-11-17

    申请号:PCT/NL2015/050317

    申请日:2015-05-08

    Abstract: The invention relates to an optical sensor device comprising a reference body and at least one sensing transducer. The sensing transducer is arranged for moving relative to the reference body in response to an input action. The device further comprises an optical fiber and one or more transmission arms. The optical fiber comprises an intrinsic fiber optic sensor and is connected with a first connecting part to a first transmission arm and with a second connecting part to an element exterior to the first transmission arm. The first and second connecting parts are on either side of the intrinsic fiber optic sensor. A base of the first transmission arm is connected at a first part with the reference body and with a second part with the sensing transducer. The optical fiber is connected at a location along the first transmission arm remote from the base.

    Abstract translation: 本发明涉及一种包括参考体和至少一个感测传感器的光学传感器装置。 感测传感器被布置成响应于输入动作相对于参考体移动。 该装置还包括光纤和一个或多个传输臂。 该光纤包括本征光纤传感器,并且与第一连接部分连接到第一传输臂,并将第二连接部分连接到第一传输臂外部的元件。 第一和第二连接部分在本征光纤传感器的两侧。 第一传动臂的基座在第一部分与参考体连接,第二部分与传感传感器连接。 光纤在远离基座的沿着第一传输臂的位置连接。

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