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1. 发明申请

US20070252998A1 Apparatus for continuous readout of fabry-perot fiber optic sensor 审中-公开
标题翻译：用于连续读取fabry-perot光纤传感器的设备
公开(公告)号：US20070252998A1
公开(公告)日：2007-11-01
申请号：US11726273
申请日：2007-03-21
申请人： John Berthold , Seth Cocking , Wincenty Kaminski , Larry Jeffers , Richard Lopushansky
发明人： John Berthold , Seth Cocking , Wincenty Kaminski , Larry Jeffers , Richard Lopushansky
IPC分类号： G01J5/08
CPC分类号： G01B9/02014 , G01B9/02004 , G01B9/02023 , G01B9/02028 , G01B2290/25 , G01D5/268 , G01D5/35383 , G01J3/26 , G01K11/3206 , G01L9/0079 , G01L11/025
摘要： An apparatus to interrogate one or more fiber optic sensors to make high-resolution measurements at long distances between the sensor and the interrogator apparatus. The apparatus comprises a tunable light source, an optical switch for pulsing the light source, at least one sensor (e.g., a Fabry-Perot sensor) for reflecting the laser light, a fiber optic cable interconnecting the sensor with the light source, a coupler for directing the reflected light from the sensor to a detector in order to generate a digital output, and a control logic for tuning the laser light source based on the digital output from the detector. Use of a fiber Bragg grating temperature sensor is also contemplated.
摘要翻译：一种用于询问一个或多个光纤传感器以在传感器和询问器装置之间的长距离进行高分辨率测量的装置。该装置包括可调谐光源，用于脉冲光源的光学开关，用于反射激光的至少一个传感器（例如，法布里 - 珀罗传感器），将传感器与光源互连的光纤电缆，耦合器用于将来自传感器的反射光引导到检测器以产生数字输出，以及用于基于来自检测器的数字输出调谐激光光源的控制逻辑。也考虑使用光纤布拉格光栅温度传感器。

2. 发明申请

US20050231736A1 Linear variable reflector sensor and signal processor 失效
标题翻译：线性可变反射器传感器和信号处理器
公开(公告)号：US20050231736A1
公开(公告)日：2005-10-20
申请号：US11105671
申请日：2005-04-14
申请人： Larry Jeffers , John Berthold
发明人： Larry Jeffers , John Berthold
IPC分类号： G01B11/14 , G01D5/26
CPC分类号： G01D5/268
摘要： Linear variable reflector sensors can be used to measure the displacement of objects. These sensors are useful in that they can be very small, do not conduct electricity, and are resistant to electrical interference from EMI/EMP and lightning strikes. The present linear variable reflector system comprises a light source, a light transmitting member in optical communication with the light source, a sensor in optical communication with the light transmitting member. The sensor comprises a moveable transparent body, a reflective material deposited on the transparent body, and at least one film deposited over said reflective material, wherein said reflective material reflects light. Further, the linear variable reflector system comprises a detector coupled to the sensor to detect displacement of the moveable transparent body.
摘要翻译：线性可变反射器传感器可用于测量物体的位移。这些传感器是有用的，因为它们可以非常小，不导电，并且能抵抗EMI / EMP的电气干扰和雷击。本线性可变反射器系统包括光源，与光源光学连通的光传输部件，与光传输部件光学连通的传感器。传感器包括可移动的透明体，沉积在透明体上的反射材料和沉积在所述反射材料上的至少一个膜，其中所述反射材料反射光。此外，线性可变反射器系统包括耦合到传感器以检测可移动透明体的位移的检测器。

3. 发明申请

US20060241889A1 Multi-channel array processor 有权
标题翻译：多通道阵列处理器
公开(公告)号：US20060241889A1
公开(公告)日：2006-10-26
申请号：US11314729
申请日：2005-12-21
申请人： Richard Lopushansky , Larry Jeffers , John Berthold
发明人： Richard Lopushansky , Larry Jeffers , John Berthold
IPC分类号： G06F15/00
CPC分类号： G01D5/266 , G01D5/35383
摘要： A method and apparatus for monitoring one or more environmental parameters using interferometric sensor(s), a cross-correlator, a two-dimensional photosensitive array and optical focusing means are described. The method and apparatus allows for near simultaneous monitoring of the parameter(s) of interest.
摘要翻译：描述了使用干涉测量传感器监测一个或多个环境参数的方法和装置，交叉相关器，二维感光阵列和光学聚焦装置。该方法和装置允许近似同时监测感兴趣的参数。

4. 发明申请

US20050244096A1 Interferometric signal conditioner for measurement of absolute static displacements and dynamic displacements of a fabry-perot interferometer 有权
标题翻译：用于测量绝缘静态位移的干涉信号调理器和fabry-perot干涉仪的动态位移
公开(公告)号：US20050244096A1
公开(公告)日：2005-11-03
申请号：US11048521
申请日：2005-02-01
申请人： Larry Jeffers , John Berthold , Richard Lopushansky , David Needham
发明人： Larry Jeffers , John Berthold , Richard Lopushansky , David Needham
IPC分类号： G01B9/02 , G01D5/26 , G02B26/00 , G02B6/26
CPC分类号： G01B9/02007 , G01B9/02027 , G01B9/02057 , G01B9/0209 , G01B2290/25 , G01B2290/45
摘要： A signal conditioner to measure the length of an interferometric gap in a Fabry-Perot sensor (interferometer). The invention includes a light source, a Fabry-Perot interferometer capable of spanning a range of gaps in response to physical changes in the environment, a second interferometer that is placed in series with the Fabry-Perot interferometer which does not filter any particular wavelengths of light but acts as an optical cross-correlator, a detector for converting the correlated light signal into electronic signals, and an electronic processor which controls system elements and generates a signal indicative of the length of the gap spanned by the Fabry-Perot sensor.
摘要翻译：用于测量法布里 - 珀罗传感器（干涉仪）中干涉间隙长度的信号调节器。本发明包括光源，法布里 - 珀罗干涉仪，其能够响应于环境中的物理变化而跨越一定范围的间隙;第二干涉仪与法布里 - 珀罗干涉仪串联放置，该干涉仪不过滤任何特定波长的光，但用作光学互相关器，用于将相关光信号转换为电子信号的检测器，以及控制系统元件并产生指示由法布里 - 珀罗传感器跨越的间隙的长度的信号的电子处理器。

5. 发明申请

US20070227252A1 Differential pressure transducer configurations including displacement sensor 有权
标题翻译：差压传感器配置包括位移传感器
公开(公告)号：US20070227252A1
公开(公告)日：2007-10-04
申请号：US11709669
申请日：2007-02-22
申请人： Travis Leitko , Richard Lopushansky , Larry Jeffers , John Berthold
发明人： Travis Leitko , Richard Lopushansky , Larry Jeffers , John Berthold
IPC分类号： G01L9/00
CPC分类号： G01L9/0079 , G01L13/025
摘要： The present invention pertains to differential pressure transducers. In an embodiment of the invention, a differential pressure transducer includes a transducer housing, a diaphragm, a bellows, and a sensing assembly. The transducer housing, diaphragm, and bellows are coupled to form a pressure chamber. The pressure chamber is separated into two portions by the diaphragm, with each portion arranged to be filled with a process fluid. A pressure differential across the diaphragm causes displacement of the diaphragm. Such displacement is measured by the sensing assembly and used to calculate the pressure differential between the two process fluids.
摘要翻译：本发明涉及差压传感器。在本发明的一个实施例中，差压换能器包括换能器壳体，隔膜，波纹管和感测组件。传感器外壳，隔膜和波纹管联接以形成压力室。压力室通过隔膜分成两部分，每个部分布置成填充有工艺流体。隔膜上的压差导致隔膜的位移。这种位移由感测组件测量并用于计算两种工艺流体之间的压力差。

6. 发明申请

US20060238775A1 Tunable laser for dynamic measurement 失效
标题翻译：可调谐激光器进行动态测量
公开(公告)号：US20060238775A1
公开(公告)日：2006-10-26
申请号：US11314952
申请日：2005-12-21
申请人： Richard Lopushansky , Larry Jeffers , John Berthold
发明人： Richard Lopushansky , Larry Jeffers , John Berthold
IPC分类号： G01B9/02
CPC分类号： G01B11/14 , G01B9/02004 , G01B2290/25 , G01D5/268
摘要： A method for monitoring changes in a gap which corresponds to changes in a particular environmental parameter using a tunable laser and interferometer at high frequency is disclosed. The laser light provided to the interferometer is swept through a small range of wavelengths. Light modulated by the interferometer is detected and a non-sinusoidal light intensity output curve is created, a reference point on the curve identified and subsequent sweep of the laser performed. The difference in time, wavelength, or frequency at the occurrence of the reference point between the two sweeps allows for measuring the relative changes in the gap and, as a result, the change in the environmental parameter.
摘要翻译：公开了一种利用高频率的可调谐激光器和干涉仪来监测与特定环境参数变化相对应的间隙变化的方法。提供给干涉仪的激光扫过一小段波长。检测由干涉仪调制的光，并产生非正弦光强度输出曲线，确定曲线上的参考点和随后的激光扫描。两次扫描之间的参考点出现时间，波长或频率的差异允许测量间隙的相对变化，并因此测量环境参数的变化。

7. 发明申请

US20050231730A1 Interferometric signal conditioner for measurement of the absolute length of gaps in a fiber optic fabry-perot interferometer 失效
标题翻译：干涉测量信号调理器，用于测量光纤fabry-perot干涉仪中的间隙绝对长度
公开(公告)号：US20050231730A1
公开(公告)日：2005-10-20
申请号：US11106750
申请日：2005-04-15
申请人： Larry Jeffers , John Berthold , Richard Lopushansky
发明人： Larry Jeffers , John Berthold , Richard Lopushansky
IPC分类号： G01B9/02 , G01D5/26 , G02B26/00
CPC分类号： G01B9/02027 , G01B9/02007 , G01B9/0209 , G01B2290/25 , G01B2290/45
摘要： A method and apparatus for quantitatively measuring the distance of an unknown variable gap is disclosed. Light is provided to two Fabry-Perot interferometers arranged in a series, one spanning the unknown gap and the other spanning a controllably variable gap. Means for verifying the positioning of the Fabry-Perot interferometer having the controllably variable gap work in conjunction with a signal processor, a correlation burst signal detector and means for conveying the light to the various system elements to perform a comparison of detector signals from the two interferometers and quantitatively establish the gap distance. The invention may also be varied to function on a time basis, include more than one source of light, possess filter means to distinguish between light sources and/or include one or more reference interferometers.
摘要翻译：公开了一种用于定量测量未知可变间隙的距离的方法和装置。将光提供给串联布置的两个法布里 - 珀罗干涉仪，一个跨越未知间隙，另一个跨越可控可变间隙。用于验证具有可控可变间隙工作的法布里 - 珀罗干涉仪的定位的装置，与信号处理器，相关突发信号检测器和用于将光传送到各种系统元件以执行来自两者的检测器信号的比较的装置干涉仪并定量建立间隙距离。本发明还可以在时间基础上变化以包括多于一个的光源，具有用于区分光源和/或包括一个或多个参考干涉仪的滤光器装置。

8. 发明授权

US07603041B2 Temperature compensated dynamic optical tag modulator system and method 有权
标题翻译：温度补偿动态光标签调制器系统及方法
公开(公告)号：US07603041B2
公开(公告)日：2009-10-13
申请号：US11150828
申请日：2005-06-09
申请人： Deepak Varshneya , Larry Jeffers
发明人： Deepak Varshneya , Larry Jeffers
IPC分类号： H04B10/00
CPC分类号： H04B10/1123
摘要： A dynamic optical tag system and method that allows for operation over a wide temperature range. A variable wavelength optical source, such as a dual wavelength fiber laser, is generated by combining the outputs from two distributed feedback lasers having separate operating wavelengths using a wavelength division multiplexer (WDM). A quantum well optical modulator mounted on the front surface of a retro-reflector in the remote receiver end of the communication link is biased to modulate one of the two laser wavelengths. At higher temperatures, the optical modulator can be biased to operate at the wavelength of one of the two lasers. At a lower temperature, the optical modulator can be biased to operate at the second of the two wavelengths. The DC bias required to tune the optical modulator is reduced by operating at two separate wavelengths depending on temperature.
摘要翻译：一种动态光学标签系统和方法，允许在宽温度范围内进行操作。通过使用波分复用器（WDM）组合来自具有分离的工作波长的两个分布式反馈激光器的输出，产生诸如双波长光纤激光器的可变波长光源。安装在通信链路的远程接收机端的后向反射器的前表面上的量子阱光调制器被偏置以调制两个激光波长中的一个。在较高的温度下，光学调制器可被偏置以在两个激光器之一的波长下工作。在较低的温度下，光调制器可被偏置以在两个波长的第二个处工作。调节光调制器所需的直流偏压通过根据温度在两个不同的波长下工作而降低。

9. 发明申请

US20060280505A1 Temperature compensated dynamic optical tag modulator system and method 有权
公开(公告)号：US20060280505A1
公开(公告)日：2006-12-14
申请号：US11150828
申请日：2005-06-09
申请人： Deepak Varshneya , Larry Jeffers
发明人： Deepak Varshneya , Larry Jeffers
IPC分类号： H04B10/00
CPC分类号： H04B10/1123
摘要： A dynamic optical tag system and method that allows for operation over a wide temperature range. A variable wavelength optical source, such as a dual wavelength fiber laser, is generated by combining the outputs from two distributed feedback lasers having separate operating wavelengths using a wavelength division multiplexer (WDM). A quantum well optical modulator mounted on the front surface of a retro-reflector in the remote receiver end of the communication link is biased to modulate one of the two laser wavelengths. At higher temperatures, the optical modulator can be biased to operate at the wavelength of one of the two lasers. At a lower temperature, the optical modulator can be biased to operate at the second of the two wavelengths. The DC bias required to tune the optical modulator is reduced by operating at two separate wavelengths depending on temperature.

10. 发明授权

US5220172A Fluorescence analyzer for lignin 失效
标题翻译：木质素荧光分析仪
公开(公告)号：US5220172A
公开(公告)日：1993-06-15
申请号：US763837
申请日：1991-09-23
申请人： John W. Berthold , Michael L. Malito , Larry Jeffers
发明人： John W. Berthold , Michael L. Malito , Larry Jeffers
IPC分类号： G01N21/64 , G01N21/85
CPC分类号： G01N21/6408 , G01N21/645 , G01N2021/6432 , G01N21/85 , G01N2201/084
摘要： A method and appartus for measuring lignin concentration in an undiluted sample of wood pulp or black liquor comprises a light emitting arrangement for emitting an excitation light through optical fiber bundles into a probe which has a sensing end facing the sample. The excitation light causes the lignin concentration to produce fluorescent emission light which is then conveyed through the probe to analyzing equipment which measures the intensity of the emission light. Measures are taken to maximize the emission light intensity which is due to lignin concentration and distinguish it from background and interfering light. The fluorescent light intensity is found to drop off in a predictable manner with increased lignin concentration.
摘要翻译：用于测量未经稀释的木浆或黑液样品中的木质素浓度的方法和装置包括用于通过光纤束将激发光发射到具有面向样品的感测端的探针的发光装置。激发光使木质素浓度产生荧光发射光，然后将荧光发射光通过探针传送到测量发射光强度的分析设备。采取措施来最大化由木质素浓度引起的发射光强度，并将其与背景和干扰光区分开来。发现荧光强度随着木质素浓度增加而以可预测的方式下降。

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