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公开(公告)号：US4473747A
公开(公告)日：1984-09-25
申请号：US318021
申请日：1981-11-04
申请人： Torgny Brogardh , Christer Ovren
发明人： Torgny Brogardh , Christer Ovren
摘要： The present invention relates to an optical sensor element of a solid material for sensing physical quantities such as pressure, which element is excitable to emit photoluminescence on excitation which constitutes a measure of the quantity being sensed. The sensor element comprises a diaphragm which consists of at least two layers applied to an apertured substrate, at least one of which layers has luminescent properties. The luminescence may be sensed by means of at least one optical fiber.
摘要翻译： 本发明涉及用于感测诸如压力的物理量的固体材料的光学传感器元件，该元件可兴奋地在激发时发射光致发光，其构成所感测量的量度。 传感器元件包括隔膜，其由施加到有孔基底的至少两层构成，其中至少一层具有发光特性。 可以通过至少一个光纤来感测发光。
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公开(公告)号：US4466295A
公开(公告)日：1984-08-21
申请号：US420003
申请日：1982-09-20
申请人： Laurence N. Wesson
发明人： Laurence N. Wesson
IPC分类号： G01D5/34 , G01L1/24 , G01L11/02 , G01P15/093
CPC分类号： G01L11/02 , G01D5/344 , G01L1/241 , G01P15/093
摘要： Photoelastic sensing means, and more particularly photoelastic sensing means capable of providing high sensitivity for measuring pressure, force, displacement, acceleration or inertial force, proximity, temperature and other measurands. The photoelastic sensing means comprises a thin photoelastic member of transparent material having closely spaced top and bottom outer surfaces with peripheral edges and an edge surface extending between the peripheral edges of the other surfaces. Light flux is provided to the edge surface of the member at a first region for transmission by the member along a path to a second region at the edge surface where it is received and detected. The spacing between the top and bottom outer surfaces of the member is relatively small compared to the length of the path of the light flux in the member. The member is supported to produce bending stresses in the member in a direction transverse to the path of the light flux in the member with the application of force to the member. An output signal is provided responsive to the force which produces the stress in the member.
摘要翻译： 光弹性传感装置，尤其是光弹检测装置，其能够提供测量压力，力，位移，加速度或惯性力，接近度，温度和其它被测量的高灵敏度。 光弹性感测装置包括透明材料的薄光弹性构件，其具有紧密间隔开的具有周边边缘的顶部和底部外表面以及在其它表面的周边边缘之间延伸的边缘表面。 在第一区域处将光通量提供到构件的边缘表面，以便通过构件沿着路径传递到在其被接收和检测的边缘表面处的第二区域。 与构件中光通量的路径的长度相比，构件的顶部和底部外表面之间的间隔相对较小。 该构件被支撑以在构件中沿着横向于构件中的光通量的路径的方向在构件上施加力产生弯曲应力。 响应于在构件中产生应力的力而提供输出信号。
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公开(公告)号：US4433238A
公开(公告)日：1984-02-21
申请号：US312750
申请日：1981-10-19
摘要： The invention relates to an optical measuring device for measuring physical or chemical quantities which device employs at least one light source, such as a light-emitting diode, in optical connection with a sensor, the spectral properties of which (e.g. the absorption or luminescence spectrum) are adapted to be changed by the quantity being measured, and at least one light detector (e.g. a photo-diode or a photo-transistor) for receiving the output signal from the sensor. The invention is characterized in that the measuring signal is adapted to be obtained by spectral analysis, and that this spectral analysis is adapted to be performed by varying the spectral distribution of the light source (the light-emitting diode) or maintaining said distribution constant, and/or by varying the sensitivity spectrum of the light detector or maintaining said spectrum constant, and that this control of the emission spectrum and the sensitivity spectrum is adapted to be carried out by a periodic controlling of the temperature of the light source and of the light detector, respectively.
摘要翻译： 本发明涉及一种用于测量物理或化学量的光学测量装置，该装置使用与传感器光学连接的至少一个光源（例如发光二极管），其光谱性质（例如吸收或发光光谱 ）适于被测量的量改变，以及用于接收来自传感器的输出信号的至少一个光检测器（例如光电二极管或光电晶体管）。 本发明的特征在于，测量信号适于通过光谱分析获得，并且该光谱分析适于通过改变光源（发光二极管）的光谱分布或维持所述分布常数来执行， 和/或通过改变光检测器的灵敏度光谱或维持所述光谱常数，并且发射光谱和灵敏度光谱的这种控制适于通过周期性地控制光源的温度和 光检测器。
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公开(公告)号：US4368645A
公开(公告)日：1983-01-18
申请号：US191193
申请日：1980-09-26
CPC分类号： G01L11/02
摘要： A system for sensing pressure features an electrically passive sensing head connected to electrically active components by a fiber optic cable. A preferred embodiment combines a polariscope bracketing a quarter wave plate and a photoelastic medium. The dependence of the intensities of two polarization components of light emerging from the photoelastic medium on the pressure applied to the medium permits the measurement of that pressure in a manner that has quadratic error dependence on optical misalignment.
摘要翻译： 用于感测压力的系统具有通过光纤电缆连接到电活动部件的电动无源感测头。 优选实施例组合了包围四分之一波片的偏光镜和光弹介质。 从光弹介质出射的光的两个偏振分量的强度对施加到介质的压力的依赖性允许以对光学偏移具有二次误差依赖性的方式测量该压力。
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公开(公告)号：US4002934A
公开(公告)日：1977-01-11
申请号：US581923
申请日：1975-05-29
申请人： Isaak Isaevich Slezinger , Georgy Mironovich Belitsky , Vladimir Alexandrovich Shiryaev , Jury Vasilievich Mironov
发明人： Isaak Isaevich Slezinger , Georgy Mironovich Belitsky , Vladimir Alexandrovich Shiryaev , Jury Vasilievich Mironov
CPC分类号： G01L1/241 , G01K1/20 , G01L11/02 , G01P15/093 , G12B7/00
摘要： A sensitive element of a piezooptic measuring converter having an insert of a piezooptic material arranged between a foot and a base and rigidly attached thereto by means of their end portions constructed as a plurality of pins, which makes it possible to reduce thermal stresses in the insert more than 20-fold and thus reduce the temperature error of the piezooptic converter produced by these stresses.
摘要翻译： 压电测量转换器的敏感元件具有布置在脚和基座之间的压电材料的插入件，并通过构造为多个销的端部将其牢固地附接到其上，这使得可以降低插入件中的热应力 超过20倍，从而降低由这些应力产生的压电转换器的温度误差。
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46.发明授权Piezo-optic measuring transducer and accelerometer, pressure gauge, dynamometer, and thermometer based thereon 失效压电光学测量传感器和加速度计，压力表，测功机和基于此的温度计
公开(公告)号：US3950987A
公开(公告)日：1976-04-20
申请号：US577005
申请日：1975-05-13
申请人： Isaak Isaevich Slezinger , Georgy Mironovich Belitsky , Vladimir Alexandrovich Shiryaev , Jury Vasilievich Mironov , Natalia Lvovna Kaplinskaya
发明人： Isaak Isaevich Slezinger , Georgy Mironovich Belitsky , Vladimir Alexandrovich Shiryaev , Jury Vasilievich Mironov , Natalia Lvovna Kaplinskaya
摘要： A piezo-optic measuring transducer is disclosed herein and an accelerometer, a pressure gauge, a dynamometer, and a thermometer based thereon.The piezo-optic measuring transducer comprises two polarization-optical channels. Each of these channels includes the following components arranged in series downstream the luminous flux produced by a light source: a polarizer, an elastic element which is common to both channels and sensitive to stress variations therein caused by a variation in the measurand, an analyzer, and a photocell. Both channels are provided with a means for varying the intensity of the luminous flux incident upon one of the photocells which intensity variation is opposite in polarity to that in the luminous flux incident upon the other photocell. Both photocells are arranged in a differential relationship with the difference in the electrical signals produced thereby being representative of the measurand. An accelerometer, a pressure gauge, a dynamometer, and a thermometer can be provided on the basis of said transducer.
摘要翻译： 本文公开了一种压电光学测量传感器，其中包括加速度计，压力计，测力计和温度计。
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公开(公告)号：US12104933B2
公开(公告)日：2024-10-01
申请号：US17620983
申请日：2020-06-24
发明人： Ayumu Sakamoto , Keiichi Fujita , Tsutomu Yamate , Ken Ogawa
IPC分类号： G01D5/26 , G01K11/125 , G01L11/02
CPC分类号： G01D5/264 , G01D5/266 , G01D5/268 , G01K11/125 , G01L11/02
摘要： An optical sensor includes a tube-shaped base formed from a metal, an optical fiber member received inside the base, and a sensor head formed from monocrystalline alumina and bonded to the base to be optically connected with the optical fiber member. The sensor head is provided with a first cavity including a first reflection surface configured to reflect a part of light introduced through the optical fiber member and a second reflection surface provided facing the first reflection surface and configured to reflect a part of the light reflected by the first reflection surface. A first interference light produced by an interference between the light reflected by the first reflection surface and the light reflected by the second reflection surface is output from the first cavity.
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公开(公告)号：US12085464B1
公开(公告)日：2024-09-10
申请号：US18591890
申请日：2024-02-29
申请人： Vanmok Inc.
IPC分类号： G01L11/02
CPC分类号： G01L11/02
摘要： A system and method for measuring pressure inside a pipeline or pressure vessel is disclosed. The system includes one or more units locatable around an external surface of the pipeline or vessel, each unit containing: a light source for generating a light beam; a single fiber Mach Zehnder interferometer (SF-MZI) sensor bendable against an outer surface of the pipeline or vessel, for receiving the light beam; a light receiver for receiving the light bean from an output of the SF-MZI sensor, said light receiver including an optical spectral analyzer; and a local processor for signal conversion; a data acquisition system associated with each of the one or more units to provide power to the elements of the unit; and a central processor in communication with each of the local processors of each of the units, said central processor containing stored strain data, and the stored bend induced birefringence data.
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49.发明授权公开(公告)号：US11982582B2
公开(公告)日：2024-05-14
申请号：US17767213
申请日：2020-08-25
申请人： NEC Corporation
发明人： Yutaka Yano , Eitaro Misumi
IPC分类号： G01L11/02
CPC分类号： G01L11/02
摘要： An optical fiber cable (10) according to each of the present disclosures includes a long tube (11) and at least one optical fiber (12) held and passed through an inside of the tube (11). The tube (11) expands and contracts in a longitudinal direction when water pressure on an outside of the tube (11) changes. When the tube (11) expands and contracts in the longitudinal direction, the expansion and contraction of the tube (11) in the longitudinal direction is transmitted to the optical fiber (12) to expand and contract the optical fiber (12) in the longitudinal direction.
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公开(公告)号：US20240118149A1
公开(公告)日：2024-04-11
申请号：US18535479
申请日：2023-12-11
发明人： Gae Hwang LEE , Youngjun YUN , Jong Won CHUNG , Yeongjun LEE , Won-Jae JOO , Yasutaka KUZUMOTO
摘要： A stretchable strain sensor includes a light-emitting element, an optical structure, and a photo-detective element. The stretchable strain sensor is located in a path of light emitted from the light-emitting element. The optical structure is configured to have optical properties that change in response to stretching of at least a portion of the stretchable strain sensor. The photo-detective element is configured to detect light transmitted through the optical structure or reflected through the optical structure.
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