专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明授权

US09737216B2 Object information acquiring apparatus and method for controlling object information acquiring apparatus 有权
公开(公告)号：US09737216B2
公开(公告)日：2017-08-22
申请号：US14303726
申请日：2014-06-13
申请人： CANON KABUSHIKI KAISHA
发明人： Ryuichi Nanaumi
IPC分类号： A61B5/00 , G01N21/17
CPC分类号： A61B5/0095 , A61B5/0075 , G01N21/1702 , G01N2021/1706 , G01N2021/1708
摘要： An object information acquiring apparatus comprises a light irradiation unit that irradiates an object with pulsed light; a probe that converts an acoustic wave generated in the object due to first pulsed light into an acoustic wave signal; a photo-detection unit that converts second pulsed light propagated through the object into an optical signal; a frequency analysis unit that acquires a background optical coefficient with respect to the inside of the object on the basis of a predetermined frequency component of the optical signal; a light intensity acquiring unit that acquires a distribution of light intensity of the first pulsed light reaching the inside of the object using the background optical coefficient; and an information acquiring unit that acquires object information, using the acoustic wave signal and the distribution of light intensity.

2. 发明申请

US20170176489A1 METHODS AND SYSTEMS FOR DETECTING GAS FLOW BY PHOTOACOUSTIC SIGNAL GENERATION 有权
公开(公告)号：US20170176489A1
公开(公告)日：2017-06-22
申请号：US14977820
申请日：2015-12-22
申请人： GENERAL ELECTRIC COMPANY
发明人： Niloy Choudhury , William Albert Challener
IPC分类号： G01P13/00 , G01N29/02
CPC分类号： G01N29/02 , G01M3/24 , G01M3/243 , G01M3/38 , G01N21/17 , G01N21/1702 , G01N29/024 , G01N29/14 , G01N29/2418 , G01N2021/1704 , G01N2021/1708 , G01N2291/012 , G01N2291/021 , G02B6/02304 , G02B6/02328 , G02B6/02366
摘要： A method for the detection of a gas flowing from a location in a structure is described. A hollow-core optical fiber is placed in a position adjacent the structure. The fiber includes a sound-conductive cladding layer; and further includes at least one aperture extending into its cross-sectional diameter. A beam of pulsed, optical is transmitted into the fiber with a tunable laser. The optical energy is characterized by a wavelength that can be absorbed by the gas that flows into the fiber through the aperture. This causes a temperature fluctuation in the region of gas absorption, which in turn generates an acoustic wave in the absorption region. The acoustic wave travels through the cladding layer, and can be detected with a microphone, so as to provide the location of gas flow, based on the recorded position and movement of the acoustic wave. A related system is also described.

3. 发明授权

US09151709B2 Multiple phase flow system for detecting and isolating substances 有权
标题翻译：用于检测和分离物质的多相流系统
公开(公告)号：US09151709B2
公开(公告)日：2015-10-06
申请号：US13228428
申请日：2011-09-08
申请人： Christine Mary O'Brien , Sagar K. Gupta , John Andrew Viator , Shramik Sengupta , Jeff Mosley , Kyle Rood
发明人： Christine Mary O'Brien , Sagar K. Gupta , John Andrew Viator , Shramik Sengupta , Jeff Mosley , Kyle Rood
IPC分类号： G01N21/03 , G01N21/17 , G01N21/05 , B01F13/00
CPC分类号： G01N21/1702 , B01F13/0071 , G01N21/05 , G01N2021/1708
摘要： A multiple flow system and method for detecting substances in a fluid is provided. More specifically, a first fluid tube containing a first fluid and a second fluid tube containing a second fluid are coupled to a common fluid tube via a connector, such that alternating discrete compartments of the first fluid and the second fluid flow through the common fluid tube. The first and second fluids are immiscible. A substance detector, having a flow chamber with an internal wall, is coupled to the common fluid tube. The alternating discrete compartments of the first and second fluids flow through the flow chamber and are analyzed by the substance detector.
摘要翻译：提供了用于检测流体中物质的多流系统和方法。更具体地，包含第一流体的第一流体管和包含第二流体的第二流体管通过连接器联接到共同的流体管，使得第一流体和第二流体的交替离散的隔室流过公共流体管。第一和第二种流体是不混溶的。具有具有内壁的流动室的物质检测器联接到公共流体管。第一和第二流体的交替离散隔室流过流动室并由物质检测器分析。

4. 发明授权

US08590365B2 Pipe system, a gas sensing system for a pipe system, and a method of determining a gas component in a cavity of a pipe 失效
标题翻译：管道系统，用于管道系统的气体感测系统以及确定管道空腔中的气体成分的方法
公开(公告)号：US08590365B2
公开(公告)日：2013-11-26
申请号：US12995740
申请日：2009-04-22
申请人： Nicky Weppenaar , Mikael Kristiansen
发明人： Nicky Weppenaar , Mikael Kristiansen
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , F16L11/082 , F16L11/12 , F16L2011/047 , G01M3/047 , G01N29/2425 , G01N2021/1704 , G01N2021/1708 , G01N2021/1793 , G01N2021/8557 , G01N2021/8578 , G01N2201/084
摘要： The invention relates to a pipe system comprising a pipe, a gas sensing station and a remote output system. The pipe comprises a pipe gas cavity, such as an annulus, extending lengthwise in part or all of the length of the pipe; the gas sensing station comprises a sensing gas cavity which is in gas communication with the pipe gas cavity: The sensing gas cavity comprises a photoacoustic spectroscope. The pipe system comprises at least one optical feeding fiber for feeding light to the photoacoustic spectroscope and a transmission path for transferring a signal from the photoacoustic spectroscope to the remote output system, the transmission path from the gas sensing station to the remote output system is an optical transmission path.The pipe may for example be a flexible pipe e.g. an umbilical or a pipe for the transportation of crude oil from a well to an off shore or on shore station, for example a ship or a platform.The gas sensing station may be integrated in the pipe, e.g. in an end fitting or it may be an external gas sensing station.According to a high security embodiment of the invention it is desired that all energy transported between the remote output system and the gas sensing station is in the form of optical energy e.g. transported in one or more optical fibers. This embodiment provides a very safe and simultaneously well functioning system, with reduced risk of igniting burnable fluids and simultaneously with a high signal-to-noise quality.
摘要翻译：本发明涉及一种管道系统，其包括管道，气体检测站和远程输出系统。管道包括管气体腔，例如环形部分，其长度方向在管道的一部分或全部长度上延伸; 气体感测站包括与管道气体腔气体连通的感测气体腔：感测气腔包括光声分光镜。管道系统包括至少一个用于将光馈送到光声分光器的光进给光纤和用于将信号从光声分光器传送到远程输出系统的传输路径，从气体传感站到远程输出系统的传输路径是光传输路径。管可以例如是柔性管，例如用于将原油从井运输到岸边或岸上的脐带或管道，例如船舶或平台。气体传感站可以集成在管道中，例如，在端部配件中，或者它可以是外部气体感测站。根据本发明的高安全性实施例，期望在远程输出系统和气体感测站之间传输的所有能量是以光能的形式。在一根或多根光纤中传送。该实施例提供了一种非常安全且同时运作良好的系统，降低了点燃可燃流体的风险，同时具有较高的信噪比。

5. 发明授权

US08234907B2 Photo acoustic detector with improved signal processing 失效
标题翻译：具有改进信号处理的光声检测器
公开(公告)号：US08234907B2
公开(公告)日：2012-08-07
申请号：US12513523
申请日：2007-11-02
申请人： Ivon Franciscus Helwegen , Hans Willem Van Kesteren
发明人： Ivon Franciscus Helwegen , Hans Willem Van Kesteren
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N29/022 , G01N29/2425 , G01N2021/1708 , G01N2291/02809 , G01N2291/02872 , G01N2291/0427
摘要： A photo acoustic detector for detecting a concentration of a sample in a mixture includes a light source for producing a light beam for exciting molecules of the sample, and a light modulator for modulating the light beam for generating pressure variations in the sample mixture, where an amplitude of the pressure variations is a measure of the concentration. The detector further includes a detector element for converting the pressure variations into a detector current and a processing section for processing the detector current to generate an output signal representing the concentration. The processing section includes an integrating amplifier for integrating the detector current, the integrating amplifier being coupled to the detector element via a hold switch, and a timing circuit for generating a hold signal, SWHOLD, for operating the hold switch to couple the integrating amplifier to the detector element during a predetermined interval of the detector current.
摘要翻译：用于检测混合物中样品浓度的光声检测器包括用于产生用于激发样品分子的光束的光源和用于调制光束以产生样品混合物中的压力变化的光调制器，其中压力变化的幅度是浓度的量度。检测器还包括用于将压力变化转换为检测器电流的检测器元件和用于处理检测器电流以产生表示浓度的输出信号的处理部分。处理部分包括用于积分检测器电流的积分放大器，积分放大器经由保持开关耦合到检测器元件，以及用于产生保持信号SWHOLD的定时电路，用于操作保持开关以将积分放大器耦合到检测器元件在检测器电流的预定间隔期间。

6. 发明授权

US08109128B2 Cavity-enhanced photo acoustic trace gas detector with improved feedback loop 失效
标题翻译：具有改进反馈回路的腔增强型光声气体检测器
公开(公告)号：US08109128B2
公开(公告)日：2012-02-07
申请号：US12438574
申请日：2007-08-30
申请人： Jeroen Kalkman , Maarten Marinus Johannes Wilhelm Van Herpen , Hans Willem Van Kesteren
发明人： Jeroen Kalkman , Maarten Marinus Johannes Wilhelm Van Herpen , Hans Willem Van Kesteren
IPC分类号： G01N21/17
CPC分类号： G01N21/1702 , G01N29/2425 , G01N2021/1704 , G01N2021/1708 , G01N2291/0427
摘要： A photo acoustic trace gas detector (100) is provided for detecting a concentration of a trace gas in a gas mixture. The detector (100) comprises a light source (101) for producing a light beam and a light modulator (103) for modulating the light beam into a series of light pulses at a chopping frequency for generating sound waves in the gas mixture. The amplitude of the sound waves is a measure of the concentration of the trace gas. The detector (100) further comprises an optical cavity (104a, 104b) with the gas mixture. The optical cavity (104a, 104b) amplifies the light intensity of the light pulses. A transducer (109) converts the sound waves into electrical signals. A feed back loop (110, 111, 113, 114) regulates a ratio of a length of the optical cavity (104a, 104b) and a wavelength of the light beam for amplifying the light intensity of the light pulses in the optical cavity (104a, 104b). The feedback loop (110, 111, 113, 114) comprises ratio modulating means (113, 114) for modulating the ratio at a modulation frequency, a photo detector (110) for measuring the light intensity of the light pulses and adjusting means (111), coupled to the photo detector (100) and to the ratio modulating means (113, 114) for, in dependence of the measured light intensity, adjusting an average of the ratio. The chopping frequency is higher than the modulation frequency.
摘要翻译：提供了一种用于检测气体混合物中痕量气体的浓度的光声气体检测器（100）。检测器（100）包括用于产生光束的光源（101）和用于将光束调制成斩波频率的一系列光脉冲以产生气体混合物中的声波的光调制器（103）。声波的幅度是痕量气体的浓度的量度。检测器（100）还包括具有气体混合物的光学腔（104a，104b）。光腔（104a，104b）放大光脉冲的光强度。换能器（109）将声波转换成电信号。反馈回路（110,111,113,114）调节光腔（104a，104b）的长度与用于放大光腔（104a）中的光脉冲的光强度的光束的波长的比，104b）。反馈环路（110,111,113,114）包括用于调制调制频率的比率的比率调制装置（113,114），用于测量光脉冲的光强度的光检测器（110）和调节装置（111 ），耦合到光电检测器（100）和比例调制装置（113,114），用于根据所测量的光强度调节该比率的平均值。斩波频率高于调制频率。

7. 发明授权

US07805980B2 Selectivity enhancement in photoacoustic gas analysis via phase-sensitive detection at high modulation frequency 有权
标题翻译：在高调制频率下通过相敏检测对光声气体分析进行选择性增强
公开(公告)号：US07805980B2
公开(公告)日：2010-10-05
申请号：US10597844
申请日：2005-02-09
申请人： Anatoliy Kosterev
发明人： Anatoliy Kosterev
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N29/2425 , G01N2021/1704 , G01N2021/1708 , G01N2291/0427
摘要： A method for detecting a target fluid in a fluid sample comprising a first fluid and the target fluid using photoacoustic spectroscopy (PAS), comprises a) providing a light source configured to introduce an optical signal having at least one wavelength into the fluid sample; b) modulating the optical signal at a desired modulation frequency such that the optical signal generates an acoustic signal in the fluid sample; c) measuring the acoustic signal in a resonant acoustic detector; and d) using the phase of the acoustic signal to detect the presence of the target fluid.
摘要翻译：一种用于使用光声光谱（PAS）检测包括第一流体和目标流体的流体样品中的目标流体的方法，包括：a）提供配置成将具有至少一个波长的光信号引入流体样品中的光源; b）以期望的调制频率调制光信号，使得光信号在流体样品中产生声信号; c）测量谐振声检测器中的声信号; 以及d）使用声信号的相位来检测目标流体的存在。

8. 发明授权

US07782462B2 Sono-photonic gas sensor 有权
标题翻译：超光子气体传感器
公开(公告)号：US07782462B2
公开(公告)日：2010-08-24
申请号：US11945610
申请日：2007-11-27
申请人： Igor Pavlovsky
发明人： Igor Pavlovsky
IPC分类号： G01N21/00
CPC分类号： G01N29/2425 , G01N21/1702 , G01N2021/1704 , G01N2021/1708 , G01N2291/021 , G01N2291/02809
摘要： Sensing a gas includes introducing a gas into a chamber, forming a standing acoustic wave in the chamber, and irradiating the chamber with electromagnetic radiation. Some of the electromagnetic radiation passes into the chamber, through the standing acoustic wave in the chamber, and out of the chamber. An amount of electromagnetic radiation that passes out of the chamber, or is transmitted through the chamber, is detected. A concentration of the gas in the chamber can be assessed.
摘要翻译：感测气体包括将气体引入室中，在室内形成驻波，并用电磁辐射照射室。一些电磁辐射通过腔室中的声波并进出腔室进入腔室。检测出从腔室出来或透过室的电磁辐射量。可以评估室中气体的浓度。

9. 发明申请

US20080127715A1 Selectivity Enhancement In Photoacoustic Gas Analysis Via Phase-Sensitive Detection At High Modulation Frequency 有权
标题翻译：在高调制频率下通过相敏检测的光声气体分析中的选择性增强
公开(公告)号：US20080127715A1
公开(公告)日：2008-06-05
申请号：US10597844
申请日：2005-02-09
申请人： Anatoliy Kosterev
发明人： Anatoliy Kosterev
IPC分类号： G01N21/00
CPC分类号： G01N21/1702 , G01N29/2425 , G01N2021/1704 , G01N2021/1708 , G01N2291/0427
摘要： A method for detecting a target fluid in a fluid sample comprising a first fluid and the target fluid using photoacoustic spectroscopy (PAS), comprises a) providing a light source configured to introduce an optical signal having at least one wavelength into the fluid sample; b) modulating the optical signal at a desired modulation frequency such that the optical signal generates an acoustic signal in the fluid sample; c) measuring the acoustic signal in a resonant acoustic detector; and d) using the phase of the acoustic signal to detect the presence of the target fluid.
摘要翻译：一种用于使用光声光谱（PAS）检测包括第一流体和目标流体的流体样品中的目标流体的方法，包括：a）提供配置成将具有至少一个波长的光信号引入流体样品中的光源; b）以期望的调制频率调制光信号，使得光信号在流体样品中产生声信号; c）测量谐振声检测器中的声信号; 以及d）使用声信号的相位来检测目标流体的存在。

10. 发明申请

US20050117155A1 Quartz-enhanced photoacoustic spectroscopy 有权
标题翻译：石英增强光声光谱
公开(公告)号：US20050117155A1
公开(公告)日：2005-06-02
申请号：US10517177
申请日：2003-06-10
申请人： Anatoliy Kosterev
发明人： Anatoliy Kosterev
IPC分类号： G01N21/17 , G01N21/61
CPC分类号： G01N29/2425 , G01N21/1702 , G01N2021/1704 , G01N2021/1708 , G01N2291/0427
摘要： Methods and apparatus for detecting photoacoustic signals in fluid media are described. The present invention differs from conventional photoacoustic spectroscopy in that rather than accumulating the absorbed energy in the fluid of a sample cell, the absorbed energy is accumulated in an acoustic detector or sensitive element. In a preferred embodiment, the acoustic detector comprises piezoelectric crystal quartz. The quartz is preferably in the shape of a tuning fork.
摘要翻译：描述了用于检测流体介质中的光声信号的方法和装置。本发明与传统的光声光谱不同之处在于，不是将吸收的能量累积在样品池的流体中，所吸收的能量积聚在声学检测器或敏感元件中。在优选实施例中，声检测器包括压电晶体石英。石英最好是音叉的形状。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式