Patents by Inventor Anbo Wang
Anbo Wang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11947163Abstract: In one aspect, the disclosure relates to multi-material fibers capable of distributedly measuring temperature and pressure in which the methods comprise a thermal drawing step, and the methods of fabricating the disclosed fibers. The fibers can be utilized in methods of temperature and pressure mapping or sensing comprising electrical reflectometry for interrogation. Further disclosed are devices comprising a disclosed fiber with the multi-point detection capability with simple one-end connection. Also disclosed are articles, e.g., smart clothing, wound dressing, robotic skin and other industrial products, comprising a disclosed fiber or a fabric comprising a disclosed fiber. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.Type: GrantFiled: June 4, 2020Date of Patent: April 2, 2024Assignee: VIRGINIA TECH INTELLECTUAL PROPERTIES, INC.Inventors: Xiaoting Jia, Anbo Wang, Haifeng Xuan, Li Yu
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Publication number: 20220255464Abstract: Aspects of triboelectric fibers and methods of manufacture of the fibers are described. In one example, a method of manufacture of a fiber for generating energy using the triboelectric effect includes forming a preform tube, heating the preform tube in a furnace, feeding a wire through the preform tube and the furnace during the heating, and pulling the wire through the furnace to form a fiber. The methods described herein can be relied upon to manufacture fibers long enough for industrial-scale textile manufacturing, including for use with industrial-scale looms. In one example, forming the preform tube can include providing a polypropylene tube and wrapping the polypropylene tube with a housing layer of amorphous film, such as acrylic film. The acrylic film can be relied upon to maintain the form and integrity of the polypropylene as the wire is pulled, and the acrylic film can be easily removed after the pulling.Type: ApplicationFiled: July 24, 2020Publication date: August 11, 2022Inventors: Ziang FENG, Shuo YANG, Anbo WANG, Xiaoting JIA, Lei ZUO, Li YU
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Patent number: 11150144Abstract: A system for measuring pressure, temperature or both includes a diaphragm that responds to a change in temperature or pressure, and a base connected to the diaphragm that has a sapphire element. Between the diaphragm and the base is a cavity. An optical fiber that conducts light reflected off of a surface of the diaphragm is adjacent the cavity. An interrogator is used for detecting a deflection of the diaphragm based on at least two reflected light signals having similar wavelengths and coherence lengths. A quadrature phase detection unit demodulates signals received by the interrogator.Type: GrantFiled: November 13, 2019Date of Patent: October 19, 2021Assignee: SENTEK INSTRUMENT LLCInventors: Bo Dong, Anbo Wang
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Patent number: 11002594Abstract: Forming a light pulse having a plurality of time-dependent frequency components such as a chirped light pulse or a light pulse group and superposing reflected light from different portions of an optical fiber allows detection of changes in effective optical path differences due to physical parameters in the environment of the optical fiber by sensing the optical interference pattern of each light frequency and wavelength. The development of a plurality of interference patterns from each light pulse provides sufficient information for robust demodulation by known methods to produce signals having good fidelity to variations in the physical parameters of interest, particularly vibrations and acoustic waves. The location of the measured physical parameter along the optical fiber can be determined from the time difference between injecting the light pulse and detection of a reflection or Rayleigh backscattering and diffraction index of the optical fiber.Type: GrantFiled: November 18, 2016Date of Patent: May 11, 2021Assignee: Sentek Instrument, LLCInventors: Lingmei Ma, Bo Dong, Anbo Wang
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Publication number: 20200386939Abstract: In one aspect, the disclosure relates to multi-material fibers capable of distributedly measuring temperature and pressure in which the methods comprise a thermal drawing step, and the methods of fabricating the disclosed fibers. The fibers can be utilized in methods of temperature and pressure mapping or sensing comprising electrical reflectometry for interrogation. Further disclosed are devices comprising a disclosed fiber with the multi-point detection capability with simple one-end connection. Also disclosed are articles, e.g., smart clothing, wound dressing, robotic skin and other industrial products, comprising a disclosed fiber or a fabric comprising a disclosed fiber. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present disclosure.Type: ApplicationFiled: June 4, 2020Publication date: December 10, 2020Inventors: Xiaoting Jia, Anbo Wang, Haifeng Xuan, Li Yu
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Publication number: 20200249075Abstract: Forming a light pulse having a plurality of time-dependent frequency components such as a chirped light pulse or a light pulse group and superposing reflected light from different portions of an optical fiber allows detection of changes in effective optical path differences due to physical parameters in the environment of the optical fiber by sensing the optical interference pattern of each light frequency and wavelength. The development of a plurality of interference patterns from each light pulse provides sufficient information for robust demodulation by known methods to produce signals having good fidelity to variations in the physical parameters of interest, particularly vibrations and acoustic waves. The location of the measured physical parameter along the optical fiber can be determined from the time difference between injecting the light pulse and detection of a reflection or Rayleigh backscattering and diffraction index of the optical fiber.Type: ApplicationFiled: November 18, 2016Publication date: August 6, 2020Inventors: Lingmei Ma, Bo Dong, Anbo Wang
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Publication number: 20200132561Abstract: A sensor for measuring pressure, temperature or both may be provided. The sensor may include a diaphragm that may respond to a change in temperature or pressure, a base connected to the diaphragm, a cavity, and an optical fiber that may conduct light reflected off of a surface of the diaphragm. The diaphragm and base may be sapphire elements. An interrogator may be provided for detecting a deflection of the diaphragm.Type: ApplicationFiled: November 13, 2019Publication date: April 30, 2020Inventors: Bo Dong, Anbo Wang
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Patent number: 10495525Abstract: A sensor apparatus and system for measuring pressure, temperature or both with a single interrogator includes a sensor having a cavity, a diaphragm and an optical element or base for conducting energy to and from the cavity and diaphragm. The two surfaces of the diaphragm and a surface of optical element and either surface of the diaphragm are partially reflecting surfaces and respectively define two optical path distances (OPDs) that produce preferential reflections and interference patterns at different optical frequencies or wavelengths that are respectively affected by pressure or temperature. Arranging the OPDs such that the fundamental frequency and harmonics of preferential reflections one OPD do not coincide with the fundamental frequency or harmonics of another OPD provides for both temperature and pressure measurement with a single interrogator and without complex spectral analysis.Type: GrantFiled: September 15, 2017Date of Patent: December 3, 2019Assignee: SENTEK INSTRUMENT LLCInventors: Bo Dong, Anbo Wang
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Patent number: 10408995Abstract: Method for creating an optical sensing fiber having a reflective structure integrally disposed therein, comprising: providing an optical fiber having a core and a cladding layer disposed in optical contact with the core, and having a polymer coating layer disposed in contact with and surrounding the cladding layer, the coating layer at least partially transparent in the wavelengths of 390-600 nm; providing a source of electromagnetic radiation having a wavelength in the range of 390-600 nm; and delivering a selected wavelength of the electromagnetic radiation through the coating layer to a selected location within the fiber core or cladding such that the delivered electromagnetic radiation alters the core or cladding to create at least one reflective structure in the core or cladding at the selected location.Type: GrantFiled: July 14, 2017Date of Patent: September 10, 2019Assignee: SENTEK INSTRUMENT, LLCInventors: Bo Dong, Anbo Wang
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Patent number: 10234346Abstract: A serial weak FBG interrogator is disclosed. The serial weak FBG interrogator may include a CW tunable laser or pulsed laser utilized as a laser source and an EDFA. The serial weak FBG interrogator may also be an interrogation of a single sensor system by utilization of a DFB laser which utilizes a single sensor, which may be an interferometer sensor, an extrinsic Fabry-Perot interferometer or a wavelength-modulated sensor. The serial weak FBG interrogator may also include a computer system or CSPU.Type: GrantFiled: May 17, 2017Date of Patent: March 19, 2019Assignee: SENTEK INSTRUMENT LLCInventors: Bo Dong, Fabin Shen, Anbo Wang
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Publication number: 20180058949Abstract: A sensor for measuring pressure, temperature or both may be provided. The sensor may include a diaphragm that may respond to a change in temperature or pressure, a base connected to the diaphragm, a cavity, and an optical fiber that may conduct light reflected off of a surface of the diaphragm. The diaphragm and base may be sapphire elements. An interrogator may be provided for detecting a deflection of the diaphragm.Type: ApplicationFiled: September 15, 2017Publication date: March 1, 2018Inventors: Bo Dong, Anbo Wang
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Patent number: 9804033Abstract: A sensor for measuring pressure, temperature or both may be provided. The sensor may include a diaphragm that may respond to a change in temperature or pressure, a base connected to the diaphragm, a cavity, and an optical fiber that may conduct light reflected off of a surface of the diaphragm. The diaphragm and base may be sapphire elements. An interrogator may be provided for detecting a deflection of the diaphragm.Type: GrantFiled: April 25, 2014Date of Patent: October 31, 2017Assignee: SENTEK INSTRUMENT LLCInventors: Bo Dong, Anbo Wang
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Publication number: 20170248480Abstract: A serial weak FBG interrogator is disclosed. The serial weak FBG interrogator may include a CW tunable laser or pulsed laser utilized as a laser source and an EDFA. The serial weak FBG interrogator may also be an interrogation of a single sensor system by utilization of a DFB laser which utilizes a single sensor, which may be an interferometer sensor, an extrinsic Fabry-Perot interferometer or a wavelength-modulated sensor. The serial weak FBG interrogator may also include a computer system or CSPU.Type: ApplicationFiled: May 17, 2017Publication date: August 31, 2017Inventors: Bo Dong, Fabin Shen, Anbo Wang
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Patent number: 9677957Abstract: A serial weak FBG interrogator is disclosed. The serial weak FBG interrogator may include a CW tunable laser or pulsed laser utilized as a laser source and an EDFA. The serial weak FBG interrogator may also be an interrogation of a single sensor system by utilization of a DFB laser which utilizes a single sensor, which may be an interferometer sensor, an extrinsic Fabry-Perot interferometer or a wavelength-modulated sensor. The serial weak FBG interrogator may also include a computer system or CSPU.Type: GrantFiled: November 27, 2013Date of Patent: June 13, 2017Assignee: Senek Instrument LLCInventors: Bo Dong, Fabin Shen, Anbo Wang
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Patent number: 8983258Abstract: A random array of holes is created in an optical fiber by gas generated during fiber drawing. The gas forms bubbles which are drawn into long, microscopic holes. The gas is created by a gas generating material such as silicon nitride. Silicon nitride oxidizes to produce nitrogen oxides when heated. The gas generating material can alternatively be silicon carbide or other nitrides or carbides. The random holes can provide cladding for optical confinement when located around a fiber core. The random holes can also be present in the fiber core. The fibers can be made of silica. The present random hole fibers are particularly useful as pressure sensors since they experience a large wavelength dependant increase in optical loss when pressure or force is applied.Type: GrantFiled: September 10, 2013Date of Patent: March 17, 2015Assignee: Virginia Tech Intellectual Properties, Inc.Inventors: Jeong I. Kim, Daniel Kominsky, Gary Pickrell, Ahmad Safaai-Jazi, Roger Stolen, Anbo Wang
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Publication number: 20140318273Abstract: A sensor for measuring pressure, temperature or both may be provided. The sensor may include a diaphragm that may respond to a change in temperature or pressure, a base connected to the diaphragm, a cavity, and an optical fiber that may conduct light reflected off of a surface of the diaphragm. The diaphragm and base may be sapphire elements. An interrogator may be provided for detecting a deflection of the diaphragm.Type: ApplicationFiled: April 25, 2014Publication date: October 30, 2014Applicant: SENTEK INSTRUMENT LLCInventors: Bo Dong, Anbo Wang
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Patent number: 8861912Abstract: A random array of holes is created in an optical fiber by gas generated during fiber drawing. The gas forms bubbles which are drawn into long, microscopic holes. The gas is created by a gas generating material such as silicon nitride. Silicon nitride oxidizes to produce nitrogen oxides when heated. The gas generating material can alternatively be silicon carbide or other nitrides or carbides. The random holes can provide cladding for optical confinement when located around a fiber core. The random holes can also be present in the fiber core. The fibers can be made of silica. The present random hole fibers are particularly useful as pressure sensors since they experience a large wavelength dependant increase in optical loss when pressure or force is applied.Type: GrantFiled: May 21, 2012Date of Patent: October 14, 2014Assignee: Virginia Tech Intellectual Properties, Inc.Inventors: Jeong I. Kim, Daniel Kominsky, Gary Pickrell, Ahmad Safaai-Jazi, Roger H Stolen, Anbo Wang
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APPARATUS AND METHOD FOR ON-LINE, REAL-TIME ANALYSIS OF CHEMICAL GASSES DISSOLVED IN TRANSFORMER OIL
Publication number: 20140233034Abstract: A method of providing real-time analysis of chemical gases in a transformer oil has been disclosed. The method includes the steps of providing an inspection probe adapted to measure a transmission spectrum of a solvent oil in a transformer, placing the probe inside a transformer, using the inspection probe to measure a transmission spectrum of the solvent oil, and determining the concentration of dissolved gases in the transmission oil.Type: ApplicationFiled: April 30, 2014Publication date: August 21, 2014Applicant: VIRGINIA POLYTECHNIC INSTITUTE & STATE UNIVERSITYInventors: Bo Dong, Anbo Wang, Jinamin Gong -
Publication number: 20140152995Abstract: A serial weak FBG interrogator is disclosed. The serial weak FBG interrogator may include a CW tunable laser or pulsed laser utilized as a laser source and an EDFA. The serial weak FBG interrogator may also be an interrogation of a single sensor system by utilization of a DFB laser which utilizes a single sensor, which may be an interferometer sensor, an extrinsic Fabry-Perot interferometer or a wavelength-modulated sensor. The serial weak FBG interrogator may also include a computer system or CSPU.Type: ApplicationFiled: November 27, 2013Publication date: June 5, 2014Applicant: Sentek Instrument LLCInventors: Bo DONG, Fabin Shen, Anbo Wang
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Patent number: 8743365Abstract: An inspection probe for directly measuring a transmission spectrum of a solvent oil in a transformer includes a tube having a plurality of apertures spaced along a side of the tube to allow oil to pass therethrough, and first and second optical collimators disposed at opposing ends of the tube. The first and second collimators are aligned by the tube such that incident light is transmitted through the first collimator, the tube, and the second collimator to a spectrometer.Type: GrantFiled: May 16, 2012Date of Patent: June 3, 2014Assignee: Virginia Polytechnic Institute & State UniversityInventors: Bo Dong, Anbo Wang, Jianmin Gong