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18 条记录 (耗时 0.008 秒)

    MICROBAROMÈTRE À SOUFFLET ET À TRANSDUCTEUR INTERFÉROMÉTRIQUE
    3.
    发明公开
    MICROBAROMÈTRE À SOUFFLET ET À TRANSDUCTEUR INTERFÉROMÉTRIQUE 有权
    具有波纹管和转换器干涉测量微气压计

    公开(公告)号：EP2938985A1

    公开(公告)日：2015-11-04

    申请号：EP13818349.6

    申请日：2013-12-18

    申请人： Commissariat à l'Energie Atomique et aux Energies Alternatives

    发明人： OLIVIER, Serge ,  PONCEAU, Damien

    IPC分类号： G01L7/06 ,  G01L11/02

    CPC分类号： G01L7/06 ,  G01L9/0039 ,  G01L11/02

    摘要： A microbarometer with a bellows comprises a reference base 11, a bellows 12 of which one edge is fixed to a reference surface of said base, having an elongation direction perpendicular to this reference surface, a cover 13 closing the other edge of this bellows so as to sealingly insulate it from the outside, the bellows being placed in conditions in which the variations in elongation of same are directly proportional to the pressure variations induced by infrasonic waves around it; it further comprises a reflective element 14 integral with this cover and an interferometric component 16 designed to be able to receive a beam from a source and integral with the reference surface of the base, having an input/output optical path facing the reflective element, parallel to the elongation direction of the bellows, so as to be able to emit a beam fraction towards this element and to sense this beam after reflection on this reflective element, this component comprising optical guide lines, and optical separation and combination areas within a same substrate, using integrated technology.

    Fibre-optic transducer apparatus
    8.
    发明公开
    Fibre-optic transducer apparatus 失效
    光纤传感器设备

    公开(公告)号：EP0127476A3

    公开(公告)日：1985-10-30

    申请号：EP84303583

    申请日：1984-05-25

    申请人： CAMINO LABORATORIES, INC.

    发明人： Knute, Wallace L. ,  Bailey, Wilber H.

    IPC分类号： G01D05/26 ,  G01L11/00 ,  A61B05/02

    CPC分类号： A61B5/02154 ,  G01D3/02 ,  G01D3/0365 ,  G01L9/0039

    摘要： A fiber-optic transducer apparatus, and a related method of manufacturing it, for particular use in medical applications such as invasive blood pressure and body temperature measurement. The apparatus includes a catheter comprised of a sheath and an enclosed first set of optical fibers for transmitting a light beam to and from the remote end of the catheter, where a transducer modulates it in accordance with the variable to be measured, e.g., blood pressure. A photosensor located at the near end of the catheter measures the modulated intensity of the returned beam, to produce a corresponding measurement signal. The catheter is further comprised of a second set of optical fibers located within the sheath, for transmitting a reference light beam to and from the remote end of the catheter. A second photosensor measures the intensity of the returned reference light beam, to produce a correction signal indicative of variations in transmittance caused by bending of the catheter. ft is presumed that the effects of such bending are the same for the second set of optical fibers as for the first set, so the apparatus adjusts the measurement signal in accordance with the correction signal, to produce an adjusted measurement signal that is substantially insensitive to the effects of such bending.

    SYSTEM AND METHOD FOR IN VIVO CALIBRATION OF A SENSOR
    10.
    发明公开
    SYSTEM AND METHOD FOR IN VIVO CALIBRATION OF A SENSOR 失效
    装置和方法用于校准体内传感器

    公开(公告)号：EP0737043A1

    公开(公告)日：1996-10-16

    申请号：EP95905947.0

    申请日：1994-12-29

    申请人： CAMINO LABORATORIES, INC.

    发明人： TRIMBLE, Brett A.

    IPC分类号： G01L7 ,  A61B5 ,  G01L9 ,  G01L27

    CPC分类号： A61B5/1495 ,  A61B5/031 ,  G01L9/0039 ,  G01L27/005

    摘要： Calibration apparatus and method for calibrating a movable pressure sensor (18) include the use of a stop device (98) to establish a reference position outside the sensing movement range of a first sensor. While in vitro, a reference pressure is established by applying pressure to the sensor (18) to move it against the stop surface (98) with a controllable pressure source (56). This reference pressure is stored (30). During use when the sensor is in an unknown position, such as when in vivo, the controllable pressure source applies pressure to move the sensor against the stop surface and the pressure required to do so is measured (62). The measured pressure is compared to the reference pressure to determine the unknown pressure and the system is then recalibrated. An optical system (42) may be used as a second sensor to determine the position of the first sensor. Inner (96) and outer (92) housings in which the first sensor and stop surface are mounted are moved in relation to each other and the optical sensor during assembly of the calibration system to accurately and independently calibrate the first and optical sensors.