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公开(公告)号：US4493995A
公开(公告)日：1985-01-15
申请号：US376142
申请日：1982-05-07
CPC分类号： G01K11/14 , G01L9/0007
摘要： The invention relates to a fiber optical measuring device for measuring physical quantities such as temperature and pressure, comprising a measuring transducer comprising a sensor material, an electronic unit comprising an evaluating electronic system, light sources and photo-detectors, and one or more optical fibers which connect said transducer to said electronic unit. The invention is characterised in that the sensor material has optical properties dependent on the modulating frequency of the light, such as absorption, reflection or luminescence; that the light from the electronic unit is arranged to be modulated by one or more frequencies; that at least one of these frequencies lies within the frequency range where the optical properties of the sensor material are influenced by at least one of said physical quantities; and that the modulating amplitude and/or the modulating phase position of the light emanating from the sensor material is/are arranged to be detected in the electronic unit at at least one of said modulating frequencies.
摘要翻译： 本发明涉及一种用于测量诸如温度和压力的物理量的光纤测量装置，包括测量换能器，包括传感器材料，包括评估电子系统，光源和光电检测器的电子单元以及一个或多个光纤 其将所述换能器连接到所述电子单元。 本发明的特征在于，传感器材料具有取决于光的调制频率的光学性质，例如吸收，反射或发光; 来自电子单元的光被布置成被一个或多个频率调制; 这些频率中的至少一个位于频率范围内，其中传感器材料的光学特性受到所述物理量中的至少一个的影响; 并且将从传感器材料发出的光的调制幅度和/或调制相位位置设置为在至少一个所述调制频率的电子单元中检测。
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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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3.发明授权
公开(公告)号：US4417140A
公开(公告)日：1983-11-22
申请号：US275789
申请日：1981-06-22
CPC分类号： H04B10/43 , H01L31/12 , H04B10/807
摘要： The invention relates to a fiber-optically coupled measuring device which has an optically energized transducer section which produces signal information in an optical form, the energy supply for the transducer section and the signal information therefrom being transmitted via a light guide fiber. The signal information is transmitted to a receiver at a location remote from the transducer section, the signal information being modified in response to electrical signals fed to a light emitting component of the transducer section.
摘要翻译： 本发明涉及一种光纤耦合的测量装置，其具有产生光学形式的信号信息的光学激发的换能器部分，用于换能器部分的能量供应以及由此引导的信号信息通过光导纤维传输。 信号信息在远离换能器部分的位置处被发送到接收器，信号信息被响应于馈送到换能器部分的发光部件的电信号而被修改。
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4.发明授权Fiber optical measuring device, employing a sensor material with a non-linear intensity response characteristic for measuring physical quantities 失效光纤光学测量装置，采用具有非线性强度响应特性的传感器材料，用于测量物理量
公开(公告)号：US4498004A
公开(公告)日：1985-02-05
申请号：US379026
申请日：1982-05-17
CPC分类号： G01D5/268
摘要： The invention relates to a measuring device for measuring physical and/or chemical quantities, comprising a measuring transducer and an evaluating electronic unit interconnected by at least one light-conducting fiber, said evaluating electronic unit comprising one or more light sources for transmitting light via said fiber/fibers to at least one sensor element, forming a part of said transducer, said evaluating electronic unit also comprising one or more light detectors for detecting light emitted from said sensor element(s). The invention is characterized in that said at least one sensor element possesses a non-linear relationship between the incident light intensity illuminating the sensor element and the intensity of the light emitted from the sensor element, that said light source/light sources are arranged to emit light having at least two, non-identical light intensities, and that at the same time said detector/detectors are arranged to measure the light coming from the sensor element.
摘要翻译： 本发明涉及一种用于测量物理和/或化学量的测量装置，包括测量传感器和由至少一个光导纤维相互连接的评估电子单元，所述评估电子单元包括一个或多个光源，用于经由所述光导纤维透过光 纤维/纤维到至少一个传感器元件，形成所述换能器的一部分，所述评估电子单元还包括一个或多个光检测器，用于检测从所述传感器元件发射的光。 本发明的特征在于，所述至少一个传感器元件在照射传感器元件的入射光强度和从传感器元件发射的光的强度之间具有非线性关系，所述光源/光源被布置成发射 光具有至少两个不相同的光强度，并且同时所述检测器/检测器被布置成测量来自传感器元件的光。
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5.发明授权Fiber-optic luminescence sensor utilizing interference in a thin layer structure 失效利用薄层结构中的干涉的光纤发光传感器
公开(公告)号：US4581530A
公开(公告)日：1986-04-08
申请号：US554058
申请日：1983-11-21
申请人： Torgny Brogardh , Bertil Hok , Christer Ovren
发明人： Torgny Brogardh , Bertil Hok , Christer Ovren
CPC分类号： G01D5/268
摘要： A fiber-optic sensor for measuring a physical quantity or sensing changes therein, consists of a transmitter and receiver unit respectively arranged to transmit and receive optical energy and an optical fiber for transmission of said optical energy to and from a sensor located at the measurement point. The sensor has at least one solid body, which is arranged to emit photoluminescent optical energy in at least one wavelength range, and a volume limited by at least two substantially plane-parallel surfaces, the separation of which is smaller than half the coherence length for either the transmitted or luminescent optical energy, whereby an interference pattern will differently affect the transmission of optical energy to the receiver unit as the optical length between said parallel surfaces changes with changes in the physical quantity being sensed.
摘要翻译： 用于测量物理量或其中的感测变化的光纤传感器由分别布置成发送和接收光能的发射器和接收器单元以及用于将光能传输到位于测量点处的传感器的光纤 。 传感器具有至少一个固体，其被布置成在至少一个波长范围内发射光致发光的光能，并且由至少两个基本上平面平行的表面限制的体积，其分离小于相干长度的一半， 传输的或发光的光能量，由此当所述平行表面之间的光学长度随着感测物理量的变化而变化时，干涉图案将不同地影响光能量传递到接收器单元。
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6.发明授权
公开(公告)号：US4560868A
公开(公告)日：1985-12-24
申请号：US462702
申请日：1983-01-31
申请人： Torgny Brogardh , Bertil Hok , Christer Ovren
发明人： Torgny Brogardh , Bertil Hok , Christer Ovren
CPC分类号： G01D5/268
摘要： A fiber optical measuring apparatus suitable for measuring physical quantities such as position, speed, acceleration, force, pressure, elongation, temperature, etc., comprises at least one optical fiber for conducting incident light between an electronic unit and a sensor, the sensor comprising at least one luminescent element. The measuring apparatus is characterized in that the physical quantity to be measured is arranged to influence the position of an optical spectral filter, for example of absorption or interference type, relative to the optical fiber in the sensor and/or relative to said luminescent element, and that said spectral filter is arranged to be situated, to a greater or lesser extent, between the end surface of the optical fiber and at least one of the luminescent elements.
摘要翻译： 适用于测量诸如位置，速度，加速度，力，压力，伸长率，温度等物理量的光纤测量装置包括用于在电子单元和传感器之间传导入射光的至少一根光纤，该传感器包括 至少一个发光元件。 测量装置的特征在于，待测量的物理量被布置成相对于传感器中的光纤和/或相对于所述发光元件影响光谱滤光器的位置，例如吸收或干涉型， 并且所述光谱滤波器布置成在或多或少的程度上位于光纤的端面与至少一个发光元件之间。
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公开(公告)号：US4529875A
公开(公告)日：1985-07-16
申请号：US417518
申请日：1982-09-13
申请人： Torgny Brogardh , Christer Ovren
发明人： Torgny Brogardh , Christer Ovren
CPC分类号： G01R33/0322 , G01R15/246
摘要： A fiber-optical measuring apparatus for measuring magnetic fields, current, position, and various mechanical quantities consists of a transducer connected to a measuring electronic unit via at least one optical fiber, and the transducer comprises a magneto-optical modulator with a domain-producing magnetic material. The transducer is provided with at least two optical filters, of which at least one filter is positioned in the ray path on one side of the magneto-optical modulator and at least one other filter is positioned in the ray path on the opposite side of the modulator.
摘要翻译： 用于测量磁场，电流，位置和各种机械量的光纤测量装置由经由至少一根光纤连接到测量电子单元的传感器组成，并且该换能器包括具有产生畴的磁光调制器 磁性材料。 换能器设置有至少两个光学滤光器，其中至少一个滤光器位于磁光调制器的一侧上的光线路径中，并且至少一个其它滤光器被定位在光束路径的相对侧上 调制器。
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公开(公告)号：US4539473A
公开(公告)日：1985-09-03
申请号：US625619
申请日：1984-06-28
申请人： Torgny Brogardh , Christer Ovren
发明人： Torgny Brogardh , Christer Ovren
IPC分类号： G01J5/08 , G01J5/58 , G01K11/20 , G01L1/00 , G01L1/24 , G01L11/02 , H01L31/10 , H01L31/14 , H01L33/00
摘要： A sensor element adaptable for measurement of a physical parameter formed of a crystalline material and emitting luminescent spectra upon excitation by light spectra and the influence of said physical parameter. A first layer emitting luminescent spectra is formed of a semiconductor material containing dopant providing shallow energy levels and recombination centers with a concentration between 10.sup.15 to 10.sup.18 cm.sup.-3, and sandwiched between second and third layers of semiconductor material having low absorption for light excitation of the first layer, and the respective lattice constants of the second and third layers being substantially coincidental with the lattice constant of the first layer. The sensor element is formed of GaAs for the substrate and AlGaAs for the semiconductor layers, with appropriate variation in the concentration Al, Ga, and As for the various layers. Generally, the energy band gap of the layers sandwiching the luminescent emitting layer are higher than that of the emitting layer. In a modified embodiment, GaAs is used as the luminescence emitting layer with covering semiconductor layers of AlGaAs, with appropriate variation in the concentration of Al, Ga and As. In a further modification an additional semiconductor layer of AlGaAs is sandwiched between the active semiconductor layer and a non-active semiconductor layer to reduce or eliminate a shift in the wavelength emission of the sensor element.
摘要翻译： 一种传感器元件，适用于测量由结晶材料形成的物理参数，并通过光谱激发后发射发光光谱以及所述物理参数的影响。 发射发光光谱的第一层由含有提供浅能级的掺杂剂的半导体材料和浓度在1015至1018cm-3之间的复合中心形成，并且被夹在具有低吸收的第二和第三半导体层之间，用于光激发 第一层和第二层和第三层的各自的晶格常数基本上与第一层的晶格常数一致。 传感器元件由用于衬底的GaAs和用于半导体层的AlGaAs形成，并且各层的浓度Al，Ga和As的适当变化。 通常，夹着发光层的层的能带隙高于发光层的能带隙。 在修改实施例中，GaAs被用作具有AlGaAs覆盖半导体层的发光发射层，Al，Ga和As的浓度具有适当的变化。 在另外的修改中，将AlGaAs的附加半导体层夹在有源半导体层和非有源半导体层之间以减少或消除传感器元件的波长发射的偏移。
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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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10.发明授权
公开(公告)号：US4446366A
公开(公告)日：1984-05-01
申请号：US306350
申请日：1981-09-28
申请人： Torgny Brogardh , Christer Ovren , Lars Sander
发明人： Torgny Brogardh , Christer Ovren , Lars Sander
CPC分类号： G01D5/268
摘要： The invention relates to a fiber optic measuring device for measuring physical and chemical quantities. Sensors positioned in the ray path influence the spectral composition of the light in dependence on the quantity to be measured. The sensors are of a material with an absorption edge or one or more filters of interference type.
摘要翻译： 本发明涉及一种用于测量物理和化学量的光纤测量装置。 位于射线路径中的传感器根据待测量的数量影响光的光谱组成。 传感器是具有吸收边缘的材料或一个或多个干涉型过滤器。
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