Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 6396. Отображено 100.
19-11-2021 дата публикации

Датчик для неинвазивного измерения концентрации глюкозы

Номер: RU0000207850U1

Предложенная полезная модель представляет собой базовую конструкцию датчика, предназначенного для неинвазивного мониторинга концентрации глюкозы в биологических тканях, и может быть использована для создания неинвазивного глюкометра для непрерывного мониторинга концентрации глюкозы.Датчик для неинвазивного измерения концентрации глюкозы состоит из диэлектрической подложки, первого металлического слоя, нанесенного на одной стороне подложки, второго металлического слоя, нанесенного на другой стороне подложки, и имеет широкую полосу рабочей частоты. Первый металлический слой состоит из расположенных на одной оси в центре подложки двухпетлевого, петлевого и щелевого вибраторов и обеспечивает формирование и пролонгирование ближнего поля, обеспечивающего высокую чувствительность датчика 0,5–0,7 дБ/(ммоль/л). Щелевой вибратор выполнен в виде рамки. Второй металлический слой представляет собой металлическую микрополосковую линию, через конец которой происходит запитывание всей конструкции. Внутри диэлектрической подложки находится металлический цилиндр, через который соединяются первый и второй металлические слои. РОССИЙСКАЯ ФЕДЕРАЦИЯ (19) RU (11) (13) 207 850 U1 (51) МПК A61B 5/145 (2006.01) H01Q 1/38 (2006.01) H01Q 7/00 (2006.01) H01Q 13/10 (2006.01) G01N 22/00 (2006.01) G01N 33/50 (2006.01) ФЕДЕРАЛЬНАЯ СЛУЖБА ПО ИНТЕЛЛЕКТУАЛЬНОЙ СОБСТВЕННОСТИ (12) ОПИСАНИЕ ПОЛЕЗНОЙ МОДЕЛИ К ПАТЕНТУ (52) СПК A61B 5/145 (2021.08); H01Q 1/38 (2021.08); H01Q 7/00 (2021.08); H01Q 13/10 (2021.08); G01N 22/00 (2021.08); G01N 33/50 (2021.08) (21)(22) Заявка: 2021114355, 21.05.2021 21.05.2021 Дата регистрации: 19.11.2021 (45) Опубликовано: 19.11.2021 Бюл. № 32 2 0 7 8 5 0 R U (56) Список документов, цитированных в отчете о поиске: CN 103892843 A, 02.07.2014. CN 108899641 A, 27.11.2018. CN 111555017 A, 18.08.2020. CN 109350077 A, 19.02.2019. US 2019104939 A1, 11.04.2019. US 2019231237 A1, 01.08.2019. WO 2018062703 A1, 05.04.2018. KR 20180088156 A, 03.08.2018. KR 101974284 B1, 30.04.2019. RU ...

Подробнее
03-05-2012 дата публикации

Seafood physical characteristic estimation system and method

Номер: US20120107461A1
Принадлежит: Individual

Systems and methods for estimating a physical characteristic of a seafood product are provided. In one system, the estimate is based on a slope defined by a ratio of changes in peak resonant amplitude and frequency of an electromagnetic resonant circuit in loaded and unloaded states. In another system, a first probe of a plurality of probes is driven with a test signal when the plurality of probes is loaded by a seafood product and the estimate is based on received test signals at one or more of the other probes. In another system, the estimate is based on the loading effect of a seafood product on an electromagnetic resonant circuit, which is also used to read an ID from an RFID associated with the seafood product. The systems and methods may be used for individual specimens, or to determine an average estimate for multiple specimens at one time.

Подробнее
10-05-2012 дата публикации

Method and apparatus for determining phase fractions of multiphase flows

Номер: US20120111124A1
Автор: Jin-lin Hu
Принадлежит: Taylor Hobson Ltd

A multiphase meter for use in the quantification of the individual phase fractions of a multiphase flow has: a resonant cavity through which, in use, a multiphase fluid flows, a signal generator configured to apply electromagnetic energy at a range of frequencies to the cavity, and an enhancing and/or suppressing facility for enhancing and/or suppressing resonant modes of a signal produced resultant to the application of electromagnetic energy to the cavity.

Подробнее
17-05-2012 дата публикации

Flaw-detection apparatus and flaw-detection method

Номер: US20120123699A1
Принадлежит: Mitsubishi Heavy Industries Ltd

Noise included in detection signals is distinguished with a simple configuration. Provided is a flaw-detection apparatus ( 1 ) including a flaw-detection sensor group ( 11 ) in which two flaw-detection sensors ( 11 a and 11 b ) are arranged substantially in one row in a scanning direction with a distance therebetween and a processing device ( 15 ) that detects a defect in an inspection object on the basis of detection signals detected by the individual flaw-detection sensors ( 11 a and 11 b ), wherein, with regard to the detection signals detected by the flaw-detection sensors ( 11 a and 11 b ), when signal values detected at substantially a same positional coordinate in the scanning direction are not similar to each other, and, additionally, when signal values measured at a same time are similar to each other, the processing device ( 15 ) determines that the detection signals are not defect signals.

Подробнее
06-12-2012 дата публикации

Aircraft Fuselage Inspection System

Номер: US20120306482A1
Принадлежит: Boeing Co

A method and apparatus for inspecting a metallic structure. A first signal is sent into a first location in the metallic structure and a second signal into a second location in the metallic structure at substantially a same time. A first response to the first signal is received. A second response to the second signal is received. The first response is compared with the second response to form a comparison. A determination is made as to whether an inconsistency is present using the comparison.

Подробнее
06-12-2012 дата публикации

Photoinduced carrier lifetime measuring method, light incidence efficiency measuring method, photoinduced carrier lifetime measuring device, and light incidence efficiency measuring device

Номер: US20120310556A1
Автор: Toshiyuki Sameshima

Disclosed is a photoinduced carrier lifetime measuring method capable of obtaining photoinduced carrier effective lifetime of a semiconductor substrate with high accuracy regardless of the surface state of the sample. The method includes the steps of: irradiating a microwave onto a semiconductor substrate while periodically pulse-irradiating an induction light onto the semiconductor substrate; detecting the microwave transmitted through the semiconductor substrate or reflected by the semiconductor substrate; and obtaining the effective lifetime of photoinduced carriers generated in the semiconductor substrate by the pulse irradiation of the induction light, based on an irradiation duration Ti and a non-irradiation duration T 2 when performing the induction light pulse irradiation and an integrated value of each microwave intensity obtained by the detection.

Подробнее
20-12-2012 дата публикации

Guided wave cutoff spectroscopy using a cylindrical measurement cell

Номер: US20120319702A1
Принадлежит: Thermo Fisher Scientific Inc

A cylindrical waveguide ( 1 ) for analyzing a flowing material ( 18 ) using guided microwave spectroscopy (GMS). Spaced apart plates ( 2, 5 ) each define a plane within the waveguide housing ( 3 ) that is parallel to the direction ( 47 ) of material flow through the waveguide. Two opposed frames ( 7, 19 ) each surround an aperture ( 6 ) that permits access to the region between the waveguide plates ( 2, 5 ). A microwave probe assembly ( 81 ) is mounted at each frame ( 7, 19 ) to permit the radiation and reception of electromagnetic waves within the housing ( 1 ). A temperature probe ( 51 ) is inserted into the interior of the housing ( 1 ) via fitting ( 13 ). A y-shaped assembly ( 89 ) can be used to divide the flow into two separate paths including a diverter vane ( 93 ) that permits flow to be equalized within the two separate flow paths.

Подробнее
17-01-2013 дата публикации

Fast tomographic microwave imaging

Номер: US20130018591A1
Автор: Tomasz M. GRZEGORCZYK
Принадлежит: Individual

Microwave imaging equipment utilizing an array of antennas operated to collect electromagnetic field information for a material being imaged. Image processing method and apparatus use the discrete dipole approximation (DDA) and drastically reduce the time required to process the measured data and estimate the properties of the material. Prior to interrogating the material, interaction matrices are generated and stored for future DDA calculations. The interaction matrices relate to the interaction between the antennas, the operating frequency, the background medium, and the location of the discretizing dipoles. An initial guess of the material properties is made and the resultant field is estimated. These results are compared to the measured results and incremental changes in the material property are computed. The updated material properties are used to recalculate the field. Comparison of the field to the measured field and updating of the material properties continues until an end criterion is satisfied.

Подробнее
02-05-2013 дата публикации

GAS PHASE COOLING AND MIXTURE ANALYSIS

Номер: US20130107244A1

A system includes a cold cell tube configured to receive a mixture of a target gas and a buffer gas to cool the target gas to a temperature at which a partial pressure of the target gas is greater than the saturated vapor pressure of the target gas while maintaining at least a portion of the target gas in the gas phase. The system also includes a spectroscopic module configured to detect the cooled target gas in the cold cell tube; and an analysis module configured to determine a characteristic of the target gas based on the results of the detecting. 1. A system comprising:a cold cell tube configured to receive a mixture of a target gas and a buffer gas to cool the target gas to a temperature at which a partial pressure of the target gas is greater than the saturated vapor pressure of the target gas while maintaining at least a portion of the target gas in the gas phase;a spectroscopic module configured to detect the cooled target gas in the cold cell tube; andan analysis module configured to determine a characteristic of the target gas based on the results of the detecting.2. The system of claim 1 , wherein the target gas includes a plurality of chemical species and the characteristic of the target gas includes an identity of at least one of the chemical species.3. The system of claim 2 , wherein the cold cell tube is configured to cool the target gas to a temperature at which a partial pressure of each chemical species is greater than the saturated vapor pressure of that chemical species.4. The system of claim 2 , wherein claim 2 , for at least one of the chemical species included in the target gas claim 2 , an elastic scattering cross section between a molecule of the at least one chemical species and a molecule of the buffer gas is greater than an elastic scattering cross section between a first molecule of the buffer gas and a second molecule of the buffer gas.5. The system of claim 1 , wherein the cold cell tube is configured to increase a phase space density ...

Подробнее
09-05-2013 дата публикации

Device for determining a composition of a fuel mixture by means of a coaxial waveguide through which the fuel mixture is flowing

Номер: US20130111980A1
Принадлежит:

A device for determining a composition of a fuel mixture is provided, in particular for determining an ethanol component and/or a water component in the fuel mixture. The device includes at least one housing having at least one electrically conductive housing element through which the fuel mixture is able to flow. At least one internal conductor, which is at least partially enclosed by the housing element, is introduced into the housing element. In addition, the device has at least one connection device for the coupling of microwave signals. 111-. (canceled)12. A device for determining a composition of a fuel mixture , comprising:at least one housing having at least one electrically conductive housing element through which the fuel mixture is able to flow, wherein at least one internal conductor is introduced into the housing element, the at least one internal conductor being at least partially surrounded by the housing element; andat least one connection device for coupling microwave signals.13. The device of claim 12 , wherein the housing element encloses the internal conductor in a coaxial manner.14. The device of claim 12 , wherein the housing element has at least one cup which at least partially surrounds the internal conductor.15140. The device of claim 12 , wherein the cup is connected to the internal conductor () in electrically conductive manner.16. The device of claim 12 , wherein the cup has a plurality of bores claim 12 , the bores having a diameter which is smaller than the smallest wavelength of the incoupled microwaves claim 12 , especially smaller than 2 mm.17. The device of claim 12 , wherein the connection device has at least one coaxial plug claim 12 , and wherein the coaxial plug has at least one contact to apply microwave signals to the internal conductor.18. The device of claim 12 , further comprising:at least one flow pipe section through which the fuel mixture is able to flow in a flow direction, wherein the internal conductor and the housing ...

Подробнее
06-06-2013 дата публикации

Sensing System and Method

Номер: US20130139596A1
Принадлежит: PARAMATA LTD.

A sensing system which comprises a material () formed of a matrix and a plurality of non-insulating particles () substantially equally spaced within the matrix such that the material has coherent electrical periodicity in at least one dimension; and a receiver (), the receiver arranged to receive a source RF signal and a returned RF signal, the source RF signal being reflected by the non-insulating particles to produce the returned RF signal. A change in the position of one or more of the non-insulating particles causes the returned RF signal to change, such that a change in a property of the material can be determined from the returned RF signal. 1. A sensing system comprising:a material comprising a matrix and a plurality of non-insulating particles substantially equally spaced within the matrix such that material has coherent electrical periodicity in at least one dimension; anda receiver arranged to receive a source RF signal and a returned RF signal, the source RF signal being reflected by the non-insulating particles to produce the returned RF signal;wherein a change in the position of one or more of the non-insulating particles causes the returned RF signal to change, such that a change in a property of the material can be determined from the returned RF signal.2. The system according to wherein the matrix is a non-conductive matrix and the non-insulating particles are conducting particles.3. The system according to claim 2 , wherein the conductive particles include at least one of carbon particles claim 2 , carbon fibre claim 2 , graphenes claim 2 , aluminium particles claim 2 , silver particles claim 2 , copper particles claim 2 , gold particles claim 2 , and carbon nanotubes.4. The system according to claim 1 , wherein the non-insulating particles are semiconducting particles.5. The system according to claim 1 , wherein the non-insulating particles are composite particles comprising a metal and an insulator.6. The system according to claim 1 , wherein the ...

Подробнее
06-06-2013 дата публикации

Process and Installation for Inspection and/or Sorting Combining Surface Analysis and Volume Analysis

Номер: US20130141115A1

Automatic process and installation for inspecting and/or sorting objects or articles belonging to at least two different categories, and made to advance approximately in a single layer, for example on a conveyor belt or a similar transport support. The process includes subjecting the advancing flow of objects or articles to at least two different types of contactless analysis by radiation, whose results are used in a combined manner for each object or article to perform a discrimination among these objects or articles and/or an evaluation of at least one characteristic of the latter, the analyses including at least one surface analysis process able to determine the physical and/or chemical composition of the outer layer of an object or article exposed to the radiation used in this process, and at least one volume analysis process able to determine the equivalent thickness of material of the same object or article.

Подробнее
20-06-2013 дата публикации

CHIRPED PULSE FREQUENCY-DOMAIN COMB FOR SPECTROSCOPY

Номер: US20130154611A1

A pulse train comprising chirped pulses of electromagnetic energy can be used to excite a sample, such as for spectroscopic analysis. The respective chirped pulses can include a frequency sweep across a first specified bandwidth during a respective chirped pulse duration, the respective chirped pulse duration establishing a first frequency-domain comb peak separation. A width of a frequency-domain comb peak can be established at least in part by a total duration of the pulse train, and a bandwidth of the first frequency-domain comb can be determined at least in part by the first specified bandwidth of the frequency sweep of the respective chirped pulses. 1. A method , comprising:generating a pulse train comprising chirped pulses of electromagnetic energy, the respective chirped pulses including a frequency sweep across a first specified bandwidth during a respective chirped pulse duration, the respective chirped pulse duration establishing a first frequency-domain comb peak separation; andexciting a sample using the pulse train;wherein a width of a frequency-domain comb peak is established at least in part by a total duration of the pulse train; andwherein a bandwidth of a first frequency-domain comb is determined at least in part by the first specified bandwidth of the frequency sweep of the respective chirped pulses.2. The method of claim 1 , wherein the pulse train comprises chirped pulses respectively sweeping across a first range of frequencies corresponding to the first specified bandwidth claim 1 , and wherein the method comprises:upconverting the pulse train to a higher second range of frequencies;frequency multiplying the pulse train to establish a wider second specified bandwidth of the first frequency-domain comb; andwherein the exciting a sample using the pulse train comprises exciting the sample using the upconverted and frequency multiplied pulse train.3. The method of claim 1 , wherein generating the pulse train includes applying a specified time- ...

Подробнее
20-06-2013 дата публикации

DEVICE FOR TESTING A SURFACE AND ASSOCIATED METHOD

Номер: US20130154668A1
Автор: Leflour Gerard
Принадлежит: DASSAULT AVIATION

The device according to the invention comprises a holder and a transmitter supported by the holder, the transmitter being capable of transmitting an electromagnetic signal toward the surface any transmission frequency (Fe). It includes a receiver for receiving a signal reflected on the surface. The device comprises a guide assembly for guiding the movement of the holder to move the transmitter and the receiver across from the surface, tangentially relative to the surface. It comprises an extraction unit for extracting, in the signal received by the receiver, a shifted frequency component of the transmission frequency resulting from a local impedance variation of the surface. The extraction unit produces an extracted signal representative of the state of the surface from the shifted frequency component. 1. A device for testing a surface , comprising:a holder;a transmitter supported by the holder, the transmitter being able to transmit an electromagnetic signal to the surface at a transmission frequency (Fe);a receiver for receiving a signal reflected on the surface; anda guide assembly for the holder to move the transmitter and the receiver across from the surface, tangentially relative to the surface, the device comprising an extraction unit for extracting a shifted frequency component (Fr−Fe) of the transmission frequency (Fe) resulting from a local impedance variation of the surface in the signal received by the receiver, the extraction unit producing an extracted signal that is representative of a state of the surface from the shifted frequency component.2. The device according to claim 1 , wherein that the shifted frequency component is representative of a Doppler shift between the transmission frequency and the reception frequency at a speed of travel of the device on the surface.3. The device according to claim 1 , wherein the extraction unit comprises a mixer for mixing at least part of the signal received by the receiver with at least part of the ...

Подробнее
24-10-2013 дата публикации

DETERMINATION OF BASIS WEIGHT OF A MATERIAL WEB USING A MICROWAVE SENSOR, WHEREBY THE DISTANCE BETWEEN THE MATERIAL WEB AND THE SURFACES OF THE MICROWAVE SENSOR IS BEING ADJUSTED TO A CONSTANT VALUE BY AIR CUSHIONS

Номер: US20130277122A1
Принадлежит:

A device for determining the weight per unit area of a moving material web, in particular a fibrous material web includes at least one microwave sensor that has an element for coupling the microwaves and a reference element. The coupling element and the reference element are located at a distance from one another in such a way that the material web can be moved therebetween. At least one microwave sensor element, the coupling element and/or the reference element can be moved such that the distances between the material web and the elements can be adjusted for or during the measurement of the moving material web. 1. A device to determine a basis weight of a moving material web , said device comprising:at least one microwave sensor having a coupling element configured for coupling microwaves and a reference element, said coupling element and said reference element located at a distance from each other so that the material web passes therebetween, at least one of said coupling element, said reference element and said at least one microwave sensor being moveable such that a distance between the material web and each of said coupling element and said reference element is adjustable for or during measurement of the moving material web.2. The device according to claim 1 , wherein said moving material web is a fibrous web.3. The device according to claim 1 , further comprising a distance measuring device configured for measuring a vertical distance between said coupling element and said reference element claim 1 , said coupling element and said reference element being arranged parallel to each other.4. The device according to claim 3 , wherein said distance measuring device is a magnetic induction measuring device.5. The device according to claim 4 , further comprising a controller for adjusting a distance between the moving material web and said coupling element and said reference element during a measurement of the moving material web.6. The device according to claim 1 , ...

Подробнее
24-10-2013 дата публикации

DISTANCE MEASUREMENT SYSTEM AND OPTICAL RESOLUTION IMPROVEMENT APPARATUS

Номер: US20130280798A1
Принадлежит:

A distance measurement system includes: an irradiating means for irradiating two coherent electromagnetic waves having frequencies different from each other to an object under measurement in a partially displacing manner while having a same area; an electromagnetic wave detecting means for detecting electromagnetic waves from at least two or more areas on the object under measurement with a boundary line being interposed therebetween to extend in a direction substantially perpendicular to the displacement direction; a signal generating means for generating a difference signal or a summation signal of respective outputs of the electromagnetic waves detected in the electromagnetic wave detecting means at symmetrical positions with respect to the boundary line; and a measuring means for obtaining a phase difference or intensity difference of the difference signal or summation signal to obtain measurement values. 1. A distance measurement system , comprising:an irradiating means for irradiating two coherent electromagnetic waves having frequencies different from each other to an object under measurement in a partially displacing manner while having a same area;an electromagnetic wave detecting means for detecting electromagnetic waves from at least two or more areas on the object under measurement with a boundary line being interposed therebetween to extend in a direction substantially perpendicular to the displacement direction;a signal generating means for generating a difference signal or a summation signal of respective outputs of the electromagnetic waves detected in the electromagnetic wave detecting means at symmetrical positions with respect to the boundary line; anda measuring means for obtaining a phase difference or intensity difference of the difference signal or summation signal to obtain measurement values.2. The distance measurement system according to claim 1 , wherein the irradiating means is constituted of two transmitting antennas each transmitting a ...

Подробнее
31-10-2013 дата публикации

MICROMECHANICAL RESONATORS

Номер: US20130285676A1
Принадлежит: COLORADO SEMINARY

Embodiments of the invention include micromechanical resonators. These resonators can be fabricated from thin silicon layers. Both rotational and translational resonators are disclosed. Translational resonators can include two plates coupled by two resonate beams. A stable DC bias current can be applied across the two beams that causes the plates to resonate. In other embodiments, disk resonators can be used in a rotational mode. Other embodiments of the invention include using resonators as timing references, frequency sources, particle mass sensors, etc. 1. A micromechanical resonator comprising:two masses;a beam coupled with each of the two masses; andtwo pads electrically coupled with the beam, wherein the masses resonate with a fixed frequency when a constant current runs through the beam.24-. (canceled)5. The micromechanical resonator according to claim 1 , wherein each mass has one dimension less than or equal to 10 μm.6. The micromechanical resonator according to claim 1 , further comprising a second beam coupled with each of the two masses.7. (canceled)8. The micromechanical resonator according to claim 1 , wherein the two masses have the same mass within fabrication tolerances.9. (canceled)10. The micromechanical resonator according to claim 1 , wherein the two masses comprise silicon.11. The micromechanical resonator according to claim 1 , wherein the two masses comprise doped silicon.12. (canceled)13. The micromechanical resonator according to claim 1 , wherein the two masses and the beam comprise a unitary structure.1415-. (canceled)16. A method comprising:etching two mass structures within a substrate, wherein each mass structure has one dimension less than or equal to 500 μm;etching a beam within the substrate connected with the two mass structures; andundercutting the two masses and the beam.1721-. (canceled)22. The method according to claim 16 , wherein the two masses and the beams are etched as a unitary structure.23. The method according to claim ...

Подробнее
21-11-2013 дата публикации

Method And Device For Measuring The Speed Of A Rolling Stock

Номер: US20130307563A1
Принадлежит: Siemens VAI Metals Technologies GmbH

A method is disclosed for determining the speed of a rolling stock, for example the belt speed of a rolling belt, wherein electromagnetic radiation in the microwave range is transmitted to the rolling stock by at least one transmitting and receiving device and the belt speed is determined on the basis of the reflected and received reflection signal in an evaluation device. A device for carrying out such method is also disclosed.

Подробнее
12-12-2013 дата публикации

METHODS AND APPARATUS FOR ELECTROMAGNETIC SIGNAL POLARIMETRY SENSING

Номер: US20130332115A1
Принадлежит: University of Notre Dame du Lac

A system and method of identifying changes utilizing radio frequency polarization includes receiving a reflected and/or transmitted polarized radio frequency signal at a receiver, filtering, amplifying and conditioning the received signal, converting the received signal from an analog format to a digital format, processing the digital signal to elicit a polarization mode dispersion feature of the received signal, and comparing the polarization mode dispersion features to a known calibration to detect a change in a characteristic of the target object. 1. A method of identifying changes utilizing polarization comprising:receiving polarized components of at least a partially polarized signal at a receiver, the signal being at least one of reflected or transmitted through a target object;processing the signal to elicit a polarization feature of the received signal; andcorrelating a change in a polarization response of the target object2. A method as defined in claim 1 , wherein detecting a change in the polarization response of the target further comprises comparing the polarization features to a known calibration.3. A method as defined in claim 2 , wherein the known calibration is determined by measuring the polarization signature and comparing the measured polarization signature to a known standard measurement.4. A method as defined in claim 1 , wherein detecting a change in the polarization response of the target further comprises comparing the polarization mode dispersion features to a previously elicited polarization mode dispersion feature of the received signal5. A method as defined in claim 1 , wherein detection of a change in a characteristic of the target object comprises detection of at least one of vibration claim 1 , position change claim 1 , attitude change claim 1 , mechanical fault claim 1 , electrical fault claim 1 , electromagnetism claim 1 , reflectivity claim 1 , liquid phase claim 1 , solid phase claim 1 , structural change claim 1 , or foreign ...

Подробнее
02-01-2014 дата публикации

MICROWAVE IMAGING BREAST PHANTOM, METHOD FOR TESTING RELIABILITY OF BREAST CANCER DIAGNOSTIC APPARATUS USING THE PHANTOM, AND BREAST CANCER DIAGNOSTIC APPARATUS INCLUDING THE PHANTOM

Номер: US20140002106A1
Принадлежит:

The present invention relates to a microwave imaging breast phantom including a simulated breast tissue phantom and a simulated cancer tissue phantom, wherein the simulated cancer tissue phantom is included in the simulated breast tissue phantom, the simulated breast tissue and the simulated cancer tissue are separated from each other, the simulated breast tissue and the simulated cancer tissue are formed by using a solvent solely or mixing water and a solvent, and the solvent having a range in which assuming that specific gravity of the water is a and specific gravity of the solvent is b, ‘(b−a)/a×100’ is about −10 to about +10 (wherein 0 is excluded) is mixed with the water, a method of testing reliability of a breast cancer diagnostic apparatus using the microwave imaging breast phantom, and a breast cancer diagnostic apparatus including the microwave imaging breast phantom. 1. A microwave imaging breast phantom , comprising:a simulated breast tissue phantom and a simulated cancer tissue phantom,wherein the simulated cancer tissue phantom is included in the simulated breast tissue phantom,the simulated breast tissue and the simulated cancer tissue are separated from each other,the simulated breast tissue and the simulated cancer tissue are respectively formed by using a solvent solely or mixing water and a solvent, andthe solvent having a range in which assuming that specific gravity of the water is a and specific gravity of the solvent is b, ‘(b−a)/a×100’ is about −10 to about +10 (wherein 0 is excluded) is mixed with the water.2. The microwave imaging breast phantom of claim 1 , wherein:the simulated breast tissue phantom has relative permittivity of about 6 to 14 and conductivity of about 0.8 to 1.8 S/m in a frequency of 3 GHz, andthe simulated cancer tissue phantom has relative permittivity of about 50 to 60 and conductivity of about 1 to 4 S/m in a frequency of 3 GHz to 1.3 GHz.3. The microwave imaging breast phantom of claim 1 , wherein:the simulated breast ...

Подробнее
02-01-2014 дата публикации

DEVICE FOR TESTING A SURFACE AND ASSOCIATED METHOD

Номер: US20140002107A9
Автор: Leflour Gerard
Принадлежит: DASSAULT AVIATION

The device according to the invention comprises a holder and a transmitter supported by the holder, the transmitter being capable of transmitting an electromagnetic signal toward the surface any transmission frequency (Fe). It includes a receiver for receiving a signal reflected on the surface. The device comprises a guide assembly for guiding the movement of the holder to move the transmitter and the receiver across from the surface, tangentially relative to the surface. It comprises an extraction unit for extracting, in the signal received by the receiver, a shifted frequency component of the transmission frequency resulting from a local impedance variation of the surface. The extraction unit produces an extracted signal representative of the state of the surface from the shifted frequency component. 1. A device for testing a surface , comprising:a holder;a transmitter supported by the holder, the transmitter being able to transmit an electromagnetic signal to the surface at a transmission frequency (Fe);a receiver for receiving a signal reflected on the surface; anda guide assembly for the holder to move the transmitter and the receiver across from the surface, tangentially relative to the surface, the device comprising an extraction unit for extracting a shifted frequency component (Fr−Fe) of the transmission frequency (Fe) resulting from a local impedance variation of the surface in the signal received by the receiver, the extraction unit producing an extracted signal that is representative of a state of the surface from the shifted frequency component.2. The device according to claim 1 , wherein that the shifted frequency component is representative of a Doppler shift between the transmission frequency and the reception frequency at a speed of travel of the device on the surface.3. The device according to claim 1 , wherein the extraction unit comprises a mixer for mixing at least part of the signal received by the receiver with at least part of the ...

Подробнее
09-01-2014 дата публикации

Pavement Material Microwave Moisture-Density Measurement Methods and Apparatuses

Номер: US20140009170A1
Автор: Troxler Robert Ernest
Принадлежит: TROXLER ELECTRONIC LABORATORIES, INC.

A method of obtaining a material property of a pavement material from a microwave field generally includes generating a microwave frequency electromagnetic field of a first mode about the pavement material. The frequency response of the pavement material in the electromagnetic field can be measured, such as by a network analyzer. The measurement of the frequency response permits correlating the frequency response to a material property of the pavement material sample, such as the density. A method of correcting for the roughness of a pavement material divides the pavement into a shallow layer and a deep layer. Two planar microwave circuits measure the permittivity of the shallow and deep layer. The permittivities are correlated to correct for roughness. An apparatus for obtaining the density of a pavement sample includes a microwave circuit and a network analyzer. The network analyzer measures the frequency response to determine the density of the pavement material. 1. (canceled)2. A material measurement gauge , the material measurement gauge comprising:an electromagnetic field generator configured to generate, by proceeding through a range of frequencies, an electromagnetic field that penetrates into a material, wherein the material includes a heterogeneous material including at least one of a pavement material and a soil material;a sensor configured to determine a frequency response of the material to the electromagnetic field across a range of frequencies, wherein determining the frequency response includes determining a change in a real component of complex impedance property of the material as a function of frequency across the range of frequencies and a change in an imaginary component of the complex impedance property of the material as a function of frequency across the range of frequencies;an analyzer configured to correlate the changes in the real and imaginary components of the complex impedance property of the material as a function of frequency to a ...

Подробнее
30-01-2014 дата публикации

SYSTEM AND METHOD FOR MEASURING HYDRO CARBONATE CONTENT IN MINERALS

Номер: US20140030813A1
Принадлежит: PETROLEO BRASILEIRO S.A. - PETROBRAS

System for measuring the hydro carbonate content in minerals, particularly pyrobituminous shale minerals, while they pass through the transport or production system, in such a way as to permit the prior adjustment of the processing conditions of said minerals. The system consists of a set of equipment for the measurement of water content, material density and hydrogen content in the mineral, said equipment being combined in such a way as to create a specific time delay between the measurements, in order for the collected data to be micro processed and the processing conditions to be adjusted in real time, based on the calculated hydro carbonate content. 1. SYSTEM FOR MEASURING HYDRO CARBONATE CONTENT IN MINERALS , characterized by comprising a set of equipment for measuring water content , material density and hydrogen content in the mineral. Said equipment is combined in such a way as to create a specific time delay between measurements , so that the collected data can then be micro processed , and so that , in real time , the conditions for the processing of the mineral can be adjusted based on the calculated hydro carbonate content.2. SYSTEM FOR MEASURING HYDRO CARBONATE CONTENT IN MINERALS claim 1 , according to claim 1 , characterized by the water content determined with the help of a microwave measurement device.3. SYSTEM FOR MEASURING HYDRO CARBONATE CONTENT IN MINERALS claim 1 , according to claim 1 , characterized by the density of the material determined by a mineral mass flow measurement device claim 1 , selected from those that emit gamma radiation or X-rays.4. SYSTEM FOR MEASURING HYDRO CARBONATE CONTENT IN MINERALS claim 1 , according to claim 1 , characterized by the hydrogen content determined by a radiation source of fast neutrons claim 1 , such as AmBe or PuBe.5. SYSTEM FOR MEASURING HYDRO CARBONATE CONTENT IN MINERALS claim 1 , according to claim 1 , characterized by the hydro carbonate content calculated in real time with the help of a ...

Подробнее
10-04-2014 дата публикации

Spinwave based nondestructive material, structure, component, or device testing tools

Номер: US20140097841A1
Принадлежит: NATIONAL UNIVERSITY OF SINGAPORE

Systems and methods for spinwave-based metrology in accordance with embodiments of the disclosure involve generating and detecting spinwaves in a sample having a ferromagnetic material; and determining a material thickness, a material integrity measure, a presence of a manufacturing defect, a categorical type of manufacturing defect, and/or a manufacturing process statistic corresponding to spinwave behavior in the sample. In an embodiment, spinwaves are generated by way of concurrent exposure of a target measurement site of the sample to each of a bias magnetic field and radiation (e.g., microwave or radio frequency radiation) produced by a first set of integrated waveguides. A response signal corresponding to a behavior of spinwaves within the target measurement site can be generated by way of a second set of integrated waveguides. Various embodiments of systems and methods for generating spinwaves, detecting spinwaves, and calculating, analyzing, or monitoring one or more sample properties can be automated.

Подробнее
07-01-2016 дата публикации

DETECTION SYSTEM AND METHOD OF DETECTING CORROSION UNDER AN OUTER PROTECTIVE LAYER

Номер: US20160003734A1
Принадлежит:

Incoherent millimetre wave, sub-millimetre wave and terahertz test signals are used to probe metal substrates that are covered by a protective coating or outer layer, such as paint or thermal insulation, obscuring direct assessment of the substrate. The incoherent test signals, which may be from a naturally occurring passive source (such as the sky) and/or from an active noise source, provide signal dispersion and angular variation of the test signals with respect to angular incidence to the substrate. Illumination of the substrate permits differentiation between un-corroded and corroded sections of the sample because reflectivity (and emissivity) from a metal-based substrate is heavily dependent on the surface resistivity which in turn is dependent on the corroded state. A detector/camera is arranged to pick up reflections from the substrate and an associated control system identifies regions of the sample that reflect the test signal illumination differently or otherwise indicate a variation from a reference value. The differences therefore signify the presence or lack of corrosion or, indeed, the presence of other abnormalities within or on the substrate. 1. A method of detecting the presence of anomalies in or on a substrate covered by a protective coating or layer , the method comprising:observing reflectivity from the substrate arising from incident electromagnetic waves produced from wide-angled illumination from a first incoherent source, the incident electromagnetic waves having millimetre or sub-millimetre wavelengths or having a frequency below about thirty terahertz; contrasting observed reflectivity in adjacent areas of the substrate; and', 'contrasting observed reflectivity of an area of the substrate under test against a reference reflectivity value anticipated for the area of the substrate under test., 'identifying the presence of anomalies in the substrate by at least one of2. The method of claim 1 , wherein the first incoherent source is a passive ...

Подробнее
04-01-2018 дата публикации

MEASURING DEVICE

Номер: US20180003650A1
Автор: Uchida Hiroshi
Принадлежит: Earthnix-M, Inc.

In a measuring device a microwave receiving unit is disposed behind a microwave transmitting unit with respect to a powder object and the microwave transmitting unit and the microwave receiving unit are each enclosed by a waveguide box. A waveguide box for the transmitting unit is smaller than a waveguide box for the receiving unit, and is enclosed by the waveguide box for the receiving unit. An opening portion of the waveguide box and an opening portion of the waveguide box are mounted on a flat window material and are aligned. The window material is in contact with the powder object Microwaves transmitted from the microwave transmitting unit are reflected by the powder object are received, as scattered microwaves by the microwave receiving unit and are measured. 1. A measuring device that makes measurement using a microwave transmitted from a transmitting unit , reflected at an object to be measured and received as a reflected wave by a receiving unit ,wherein the receiving unit is disposed behind the transmitting unit with respect to the object to be measured:2. The measuring device according to claim 1 , wherein a horn antenna or a waveguide box is provided at the transmitting unit or the receiving unit.3. The measuring device according to claim 1 , wherein a horn antenna or a waveguide box is provided at each of the transmitting unit and the receiving unit.4. The measuring device according to claim 3 , wherein the horn antenna or the waveguide box provided at the transmitting unit is disposed at an inner side of the horn antenna or the waveguide box provided at the receiving unit.5. The measuring device according to claim 1 , wherein a second receiving unit is provided at the transmitting unit.6. The measuring device according to claim 2 , wherein a second receiving unit is provided at the transmitting unit.7. The measuring device according to claim 3 , wherein a second receiving unit is provided at the transmitting unit.8. The measuring device according to ...

Подробнее
13-01-2022 дата публикации

SENSOR FOR FABRIC- OR TEXTILE-BASED CONVEYOR BELT SCANNING AND MONITORING

Номер: US20220009721A1
Принадлежит: ContiTech Transportbandsysteme GmbH

A system for monitoring conveyor belts is disclosed. The system also includes a first sensor configured to generate a first field and obtain first measurements based on the generated first field and a conveyor belt. The system also includes a second sensor configured to generate a second field and obtain second measurements based on the generated second field and the conveyor belt. The system also includes circuitry configured to generate hybrid belt information based on the obtained first measurements and the obtained second measurements. The system can utilize the Doppler effect and/or microwave radiation/fields to generate the hybrid belt information. 1. A system for monitoring conveyor belts , the system comprising:a first sensor configured to generate a first field and obtain first measurements using microwave technology and based on the generated first field and a conveyor belt;a second sensor configured to generate a second field and obtain second measurements based on the generated second field and the conveyor belt; andcircuitry configured to generate hybrid belt information based on the obtained first measurements and the obtained second measurements and utilize the obtained first measurements and the Doppler effect to at least partially determine one or more belt defects.2. The system of claim 1 , wherein the circuitry is configured to identify one or more belt defects based on the generated hybrid belt information.3. The system of claim 2 , wherein the circuitry is configured to determine an expected failure time for the one or more identified belt defects.4. The system of claim 3 , wherein the circuitry is configured to determine a maintenance schedule to correct the identified belt defect prior to the expected failure time.5. (canceled)6. The system of claim 1 , wherein the second sensor utilizes radiation at non-microwave frequency ranges.7. The system of claim 1 , wherein the first sensor comprises an array of transducers.8. The system of claim 1 , ...

Подробнее
07-01-2021 дата публикации

METHOD AND DEVICE FOR MEASURING FAT IN MILK

Номер: US20210003491A1
Принадлежит:

Method for continuous determining of fat content of milk having variable solids fractions 1. Method for continuous determining of fat content of milk having variable solids fractions and flowing with variable gas content in a pipeline , comprising:ascertaining a value for velocity of sound and an average density value for milk flowing in the pipeline based on eigenfrequencies of at least two bending oscillation wanted modes of measuring tubes of a densimeter arranged in the pipeline;ascertaining a value for static pressure in the pipeline by means of a pressure sensor connected to the pipeline;ascertaining a value for gas volume fraction based on the value for the velocity of sound, the value for the average density and the value for the pressure;ascertaining a value of density of milk flowing in the pipeline without gas content based on the value for the average density and based on the value for the gas volume fraction;ascertaining a value for permittivity of milk flowing in the pipeline based on at least one measuring of propagation velocity and/or absorption of microwaves in the milk by means of a microwave sensor arranged in the pipeline; andcalculating fat fraction based on the value of the density of the milk flowing in the pipeline without gas content and the value for the effective permittivity.2. Method as claimed in claim 1 , wherein claim 1 , for the calculating claim 1 , the milk is modeled as a three component system claim 1 , wherein the components comprise fat claim 1 , water and fat-free solids.3. Method as claimed in claim 2 , wherein the solids comprise proteins and carbohydrates claim 2 , especially mainly lactose.4. Method as claimed in one of the preceding claims claim 2 , wherein density of milk flowing in the pipeline without gas content is modeled as a function claim 2 , for example claim 2 , a linear function claim 2 , of concentration of the components contained in the milk with density values of pure components as weighting factors; ...

Подробнее
07-01-2021 дата публикации

MICROWAVE SOIL MOISTURE SENSOR BASED ON PHASE SHIFT METHOD AND INDEPENDENT OF ELECTRICAL CONDUCTIVITY OF THE SOIL

Номер: US20210003514A1
Автор: Kitic Goran
Принадлежит:

The present invention relates to soil moisture and soil matric potential measurement using microwave sensor composed of sensor element (), porous matrix (), phase shift measurement circuit () and circuit protective layer (). Operating principle is based on the phase shift method in which phase shift of the signal propagating along sensor element () is related to the porous matrix () moisture content. Porous matrix () is in contact with surrounding soil () and reflects its water content. Phase shift measurement circuit () excite sensor element () and measures phase shift. The sensor is independent of soil electrical conductivity owing to the operating frequency in microwave range (˜GHz). In this manner, it is less sensitive to the soil type and therefore less demanding for calibration. The sensor is made of durable elements without consumable parts which enable a long-term operation. Its low power consumption makes it suitable for Internet of Things concept and automatic irrigation systems. 1. The microwave soil moisture sensor based on a phase shift method that is independent of the electrical conductivity of the soil , comprising:a sensor element with a protective layer;a porous matrix that surrounds sensor element and is in direct contact with it; anda phase shift measurement circuit covered with a protective layer;2. The soil moisture sensor according to claim 1 , wherein sensor element is realized in the form of planar waveguide claim 1 , and is protected from aggressive environment with polyurethane based layer.3. The soil moisture sensor according to claim 1 , wherein the porous matrix provides a complete contact with the sensor element and the surrounding soil claim 1 , and claim 1 , at the same time claim 1 , is in the state of hydrodynamic equilibrium with the surrounding soil.4. The porous matrix according to claim 3 , wherein its morphological properties cover soil matric potentials starting from field capacity (−33 kPa) claim 3 , over lento-capillary ...

Подробнее
07-01-2021 дата публикации

ELECTROMAGNETIC IMAGING AND INVERSION OF SIMPLE PARAMETERS IN STORAGE BINS

Номер: US20210003621A1
Принадлежит:

A method for electromagnetic imaging of containers receives uncalibrated first data corresponding to signals of a first plurality of different frequencies associated with an antenna array residing in a container having contents. The method estimates of a second data based on a computer model and simulation of signals of a second plurality of different frequencies associated with the antenna array, the second plurality of different frequencies including a subset of the first plurality of different frequencies. The method compares magnitudes, without corresponding phase comparisons, of the first and second data at each frequency of the second plurality of different frequencies. The method updates the second data based on the comparing. The method provides information about the contents within the container based on the updated second data. 1. A method for electromagnetic imaging of containers , comprising: receiving uncalibrated first data corresponding to signals of a first plurality of different frequencies associated with an antenna array residing in a container having contents;', 'estimating second data based on a computer model and simulation of signals of a second plurality of different frequencies associated with the antenna array, the second plurality of different frequencies comprising a subset of the first plurality of different frequencies;', 'comparing magnitudes, without corresponding phase comparisons, of the first and second data at each frequency of the second plurality of different frequencies;', 'updating the second data based on the comparing; and', 'providing information about the contents within the container based on the updated second data., 'in one or more processors2. The method of claim 1 , wherein receiving comprises receiving uncalibrated S-parameter measurement data.3. The method of claim 1 , wherein estimating comprises estimating one or more parameters of the contents in the container.4. The method of claim 3 , wherein the one or more ...

Подробнее
13-01-2022 дата публикации

DEBYE LENGTH MODULATION

Номер: US20220011262A1
Принадлежит: FemtoDx

Systems and methods for detection of biological agents are generally described. Target biological agents may be detected by use of a sensor, which in some situations is a nanowire. An external electric field is applied in some embodiments to induce an electric dipole. The induced electric dipole is detected, allowing detection of the biological agent. 1. A device for sensing a chemical and/or biological analyte , comprising:a nanosensor, wherein at least a portion of the nanosensor is functionalized with a chemical and/or biological detector species; anda source of an alternating electric field, wherein the source is configured such that the electric field produced by the source is incident upon the nanosensor.219-. (canceled)20. A method of sensing a chemical and/or biological analyte , comprising:applying an alternating electric field to a nanosensor functionalized with a chemical and/or biological detector species such that the Debye length of an analyte associated with the chemical and/or biological detector species is altered.2124-. (canceled)25. A method of sensing a chemical and/or biological analyte , comprising:applying an alternating electric field to a nanosensor functionalized with a chemical and/or biological detector species in the presence of a sample comprising an analyte;applying an electrical potential across the nanosensor;collecting a first set of data, based on the applied electrical potential, at points in time at which the alternating electric field is at a first power to provide a background signal; andcollecting a second set of data, based on the applied electrical potential, at points in time at which the alternating electric field is at a second power that is different from the first power to provide a signal indicative of a property of the analyte, the detector species, and/or an interaction between the analyte and the detector species.2632-. (canceled)33. A method of sensing a chemical and/or biological analyte , comprising:applying an ...

Подробнее
03-01-2019 дата публикации

Systems, Devices, and Methods for Managing Data

Номер: US20190004353A1
Автор: Campbell Scott H.
Принадлежит: METER Group, Inc. USA

Apparatus, devices, systems, and techniques are disclosed herein to manage digital data generated as part of a manufacturing process. A data management device may be operatively coupled to one or more instruments via cables connected to data ports provided in the instruments. The data management device may be configured to communicate with the instruments via these wired connections. The data management device may be network-enabled such that it is capable of communicating with servers and/or remote computing devices via a network. Upon executing a test, the data management device may collect the data from the instruments and form a digital record. The digital record may include measurement information and compliance information associated with the test that was performed. The data management device may be configured to store the digital record or the test data. 1. A device , comprising:a pillar extending upward from a base;a plurality of data ports positioned on a first sidewall of the pillar, each data port being configured to receive data output from a serial port of a water activity meter; anda touchscreen user interface coupled to a second sidewall of the pillar different from the first sidewall, the touchscreen user interface being angled relative to the first sidewall such that the touchscreen user interface defines a viewing angle, the touchscreen user interface being configured to output the received data and received commands from a user.2. The device of claim 1 , further comprising:an arm extending from the second sidewall of the pillar configured to suspend the touchscreen user interface above a top surface of the base, wherein the touchscreen user interface is coupled to the arm.3. The device of claim 2 , wherein the arm is angled relative to the first sidewall of the pillar.4. The device of claim 3 , wherein a first distance between a first end of the arm and the first sidewall is less than a second distance between a second end of the arm and the ...

Подробнее
10-01-2019 дата публикации

A NON-INVASIVE SENSING SYSTEM

Номер: US20190008422A1
Принадлежит:

A non-invasive sensing system for measuring the concentration of a substance within an object, the system including a support element adapted to be placed near to, or against, a surface of the object, a first transmitting antenna mounted upon or within the support element for transmitting electromagnetic radiation signals into the object, and a second receiving antenna mounted upon or within the support element, and adjacent to the first transmitting antenna, for receiving at least a portion of the electromagnetic radiation signals that are reflected back to the same surface of the object covered by the support element, due to the transmitted electromagnetic radiation signals having interacted with the substance within the object being measured. 1. A non-invasive sensing system for measuring the concentration of a substance within an object , said system comprising:a. a support means adapted to be placed near to, or against, a surface of the object,b. a first transmitting antenna mounted upon or within the support means for transmitting electromagnetic radiation signals into the object, andc. a second receiving antenna mounted upon or within the support means, and adjacent to the first transmitting antenna, for receiving at least a portion of the electromagnetic radiation signals that are reflected back to the same surface of the object covered by the support means, due to the transmitted electromagnetic radiation signals having interacted with the substance within the object being measured.2. The non-invasive sensing system for measuring the concentration of a substance within an object claim 1 , as claimed in claim 1 , wherein the system further includes an analyser which is in electrical communication with the first transmitting antenna and the second receiving antenna claim 1 , the analyser being adapted to break down the reflected signal received by the second receiving antenna into spectra or a spectral file.3. The non-invasive sensing system for measuring the ...

Подробнее
11-01-2018 дата публикации

FINE PARTICLE DETECTOR AND EXHAUST GAS PURIFICATION APPARATUS

Номер: US20180008925A1
Принадлежит: FUJITSU LIMITED

A fine particle detector includes: a casing part configured to accommodate an object to be heated; an electromagnetic wave generating part configured to generate electromagnetic waves of different frequencies; at least one power sensor configured to measure powers, from the casing part, of the electromagnetic waves that have entered into the casing part; and a fine particle detection controlling part configured to determine, based on the powers of the electromagnetic waves of the different frequencies measured by the at least one power sensor, whether an accumulated amount of fine particles accumulated in the object to be heated is greater than or equal to a predetermined accumulated amount. 1. A fine particle detector comprising:a casing part configured to accommodate an object to be heated;an electromagnetic wave generating part configured to generate electromagnetic waves of different frequencies;at least one power sensor configured to measure powers, from the casing part, of the electromagnetic waves that have entered into the casing part; anda fine particle detection controlling part configured to determine, based on the powers of the electromagnetic waves of the different frequencies measured by the at least one power sensor, whether an accumulated amount of fine particles accumulated in the object to be heated is greater than or equal to a predetermined accumulated amount.2. The fine particle detector according to claim 1 , wherein the at least one power sensor is a reflection power sensor configured to measure powers of electromagnetic waves reflected in the casing part among the electromagnetic waves emitted to the casing part from the electromagnetic wave generating part.3. The fine particle detector according to claim 1 , wherein the at least one power sensor is a pass-through power sensor configured to measure powers of electromagnetic waves that have passed through the object to be heated among the electromagnetic waves emitted to the casing part from ...

Подробнее
27-01-2022 дата публикации

SYSTEM FOR DETECTION OF DRIFT OF THE WATER VOLUME FRACTION IN A FLOW

Номер: US20220026376A1
Автор: UNDHEIM Erik
Принадлежит:

The present invention relates to a system for measuring the water volume fraction (WVF) of a mixed fluid flow in a pipe, especially wet and dry gas hydrocarbon fluid flows, the system comprising a measuring unit for measuring the dielectric permittivity of said fluid mixture, a computing unit for calculating and storing both the WVF, based on the absolute level of the dielectric permittivity, and the statistical variation of the dielectric permittivity of said fluid mixture over a predetermined period of time. The system also including an analysis unit for detecting drift in the measured WVF by comparing and analyzing the development of the WVF versus the statistical variation of the permittivity over said time period, and based on detected drift to determine whether an apparent change in the WVF is reflected in a corresponding change in the statistical variation of the permittivity, and, based on said comparison, determining if the drift is caused by a real change in the WVF. 1. A system for measuring the water volume fraction (WVF) of a mixed fluid flow in a pipe , the system comprising:a measuring unit for measuring the dielectric permittivity of the fluid mixture;a computing unit for calculating and storing both the WVF based on the dielectric permittivity and the statistical variation of the dielectric permittivity of the fluid mixture over a predetermined period of time; andan analysis unit for detecting drift in the calculated WVF by comparing and analyzing the development of the calculated WVF versus the statistical variation of the permittivity over the time period, and based on detected drift to determine whether the development in the calculated WVF is reflected in a corresponding change in the statistical variation of the permittivity, and, based on the comparison and analysis, determining if the drift is caused by a real change in the WVF.2. The system according to claim 1 , wherein the WVF is derived from the measured permittivity of the mixture claim ...

Подробнее
12-01-2017 дата публикации

Fluid Phase Analyzer with Embedded Measurement Electronics

Номер: US20170010251A1
Автор: Bentley N. Scott
Принадлежит: Phase Dynamics Inc

An apparatus for analyzing a multiphase fluid in a pipeline. The apparatus comprises: i) an elongated shaft adapted to be inserted into the pipeline, the elongated shaft comprising a measurement electronics section and an extension section; ii) a housing coupled to the elongated shaft and adapted to be positioned outside the pipeline when the elongated shaft is inserted into the pipeline; and iii) a ground cage coupled to the elongated shaft, the ground cage comprising a sensor coupled to the measurement electronics section. The ground cage comprises a tube having perforations therein to permit multiphase fluid to flow within the ground cage. The sensor comprises a ceramic rod and an antenna within the ceramic rod.

Подробнее
08-01-2015 дата публикации

METHOD FOR ONLINE MEASUREMENT OF A PLASTICIZER IN AN ENDLESS FILTER ROD AND A DEVICE FOR PRODUCING AN ENDLESS FILTER ROD OF THE TOBACCO PROCESSING INDUSTRY

Номер: US20150012228A1
Принадлежит: Tews Elektronik GmbH & Co. KG

A method for online measurement of a plasticizer in an endless filter rod, includes: measuring a resonance shift (A) and line broadening (B) with a microwave resonator at a passing endless filter rod, determining a mass per length of plasticizer from the measurement variables (A, B), measuring a reference mass of plasticizer applied per time with the application of the plasticizer onto the filter tow band, determining an averaged reference mass per length of plasticizer from the measured mass applied over a time period, averaging the values for mass per length of plasticizer, determined using the measurement variables over the same time in which the reference mass of plasticizer is determined, determining a deviation between the averaged reference value for the mass per length and averaged mass per length and correcting the mass per length, determined from the measurement variables of the microwave resonator, according to the determined deviation. 1. A method for online measurement of a plasticizer in an endless filter rod at a filter rod maker , the method comprising:measuring a resonance shift (A) and a line broadening (B) with a microwave resonator at a passing endless filter rod,determining a mass per length of plasticizer from the measurement variables (A, B) of the microwave resonator,measuring a reference mass of plasticizer applied per time with the application of the plasticizer onto the filter tow band,determining an averaged reference mass per length of plasticizer from the measured mass applied over a time period,averaging the values for mass per length of plasticizer, determined using the measurement variables of the microwave resonator, over the same time period in which the reference mass of plasticizer is determined,determining a deviation between the averaged reference value for the mass per length and the averaged mass per length, andcorrecting the mass per length determined from the measurement variables of the microwave resonator according to the ...

Подробнее
14-01-2016 дата публикации

ROADWAY INFRASTRUCTURE MONITORING BASED ON AGGREGATED MOBILE VEHICLE COMMUNICATION PARAMETERS

Номер: US20160011124A1
Автор: Kruglick Ezekiel
Принадлежит:

Technologies are generally described to monitor roadway infrastructure based on aggregated mobile vehicle communication parameters. In some examples, a pair of vehicles with mobile communication devices passing an infrastructure, such as a bridge, may be identified, and the mobile communication devices may exchange a signal during a mobile communication as the vehicles pass the target infrastructure. During the signal exchange, channel characterization data for the target infrastructure may be collected. The channel characterization data may represent propagation conditions of signal waves through the target infrastructure. The channel characterization data may be received at a mobile communication network, where a tomographic model of the target infrastructure may be generated based on extraction and analysis of the channel characterization data. Physical and structural characteristics of the target infrastructure may be determined based on the generated tomographic image of the target infrastructure to facilitate monitoring for degradation and flaws in the target infrastructures. 1. A method to monitor roadway infrastructure based on aggregated mobile vehicle communication parameters , the method comprising:identifying a target infrastructure to monitor;identifying a pair of mobile communication devices approaching the target infrastructure;instructing the pair of mobile communication devices to communicate with each other through one or more signals as the pair of mobile communication devices pass the target infrastructure;instructing at least one of the pair of mobile communication devices to collect information about the one or more signals;receiving the collected information about the one or more signals from the at least one of the pair of mobile communication devices;analyzing the collected information about the one or more signals to determine a structural characteristic of the target infrastructure; andinstructing at least one of the mobile communication ...

Подробнее
11-01-2018 дата публикации

Water-Cut Sensor System

Номер: US20180011033A1

Provided in some embodiments is a method of manufacturing a pipe conformable water-cut sensors system. Provided in some embodiments is method for manufacturing a water-cut sensor system that includes providing a helical T-resonator, a helical ground conductor, and a separator at an exterior of a cylindrical pipe. The helical T-resonator including a feed line, and a helical open shunt stub conductively coupled to the feed line. The helical ground conductor including a helical ground plane opposite the helical open shunt stub and a ground ring conductively coupled to the helical ground plane. The feed line overlapping at least a portion of the ground ring, and the separator disposed between the feed line and the portion of the ground ring overlapped by the feed line to electrically isolate the helical T-resonator from the helical ground conductor.

Подробнее
11-01-2018 дата публикации

SYSTEM AND METHOD FOR REAL TIME ON-STREAM ANALYSIS OF OIL SANDS COMPOSITION

Номер: US20180011036A1
Принадлежит:

A method for real time on-stream analysis of oil sands composition is disclosed comprising the steps of detecting a moisture content of an oil sands stream using a microwave transmission analyzer, detecting an elemental composition of the oil sands stream using a prompt gamma neutron activation analyzer and calculating a content of hydrocarbons, clays and sands in the oil sands stream. The total clay amount in the oil sands stream is based on the detected gamma spectra of several elemental components of the oil sands stream, such as sodium, magnesium, potassium, calcium and iron. 1. A method for real time on-stream analysis of oil sands composition comprising the steps of:a. detecting a moisture content of an oil sands stream using a microwave transmission analyzer, andb. detecting an elemental composition of the oil sands stream using a prompt gamma neutron activation analyzer and calculating a content of hydrocarbons, clays and sands in the oil sands stream.2. The method of claim 1 , wherein the step of detecting the moisture content of the oil sands stream comprises transmitting a microwave signal from a microwave transceiver through an oil sands stream to a receiver antenna and comparing the microwave signal transmitted by the microwave transceiver to a microwave signal received by the receiver antenna.3. The method of claim 2 , wherein the step of detecting the moisture content of the oil sands stream comprises weighting the oil sands stream and factoring in a weight of the oil sands stream when comparing the received microwave signal to the transmitted microwave signal.4. The method of claim 1 , wherein the step of detecting the elemental composition of the oil sands stream comprises generating neutrons from a neutron source and detecting a series of gamma spectra by a gamma detector claim 1 , each detected gamma spectrum corresponding to an element present in the oil sands stream.5. The method of claim 4 , comprising detecting a sulphur content in the oil ...

Подробнее
11-01-2018 дата публикации

Selective Characterization of Material Under Test (MUT) with Electromagnetic Impedance Tomography and Spectroscopy

Номер: US20180011040A1
Принадлежит:

A method of extracting complex impedance from selected volumes of the material under test (MUT) combined with various embodiments of electrode sensor arrays. Configurations of linear and planar electrode arrays provide measured data of complex impedance of selected volumes, or voxels, of the MUT, which then can be used to extract the impedance of selected sub-volumes or sub-voxels of the MUT through application of circuit theory. The complex impedance characteristics of the sub-voxels may be used to identify variations in the properties of the various sub-voxels of the MUT, or be correlated to physical properties of the MUT using electromagnetic impedance tomography and/or spectroscopy. 1. A method of characterizing select volumes of a material under test (MUT) using electromagnetic impedance tomography and spectroscopy , the method comprising:obtaining a complex impedance of a volume or voxel of the MUT with an electrode array including a linear array of electrodes or a planar array of electrodes, in communication with the MUT; andapplying at least one of a series circuit approach or a parallel circuit approach to compute a complex impedance of: segments of the volume, or sub-voxel of the voxel, using the measured values of the volume or voxel of the MUT.2. The method of claim 1 , wherein the complex impedance is obtained for the voxel of the MUT claim 1 , and wherein the complex impedance of the sub-voxel is correlated with physical properties of the MUT.3. The method of claim 1 , wherein the electrode array includes the linear array of electrodes claim 1 , and wherein the number of electrodes in the linear array is equal to a number of layers (n) of the MUT to be measured plus one (n+1).4. The method of claim 1 , wherein a spacing (Δ) between centers of adjacent electrodes in the electrode array is equal and defined by a minimum thickness of the layers of the MUT to be measured.5. The method of claim 1 , wherein electrodes in the linear array or the planar array ...

Подробнее
14-01-2021 дата публикации

MOISTURE MEASUREMENT OF TIMBER

Номер: US20210010752A1
Автор: FREDRIC Malcolm
Принадлежит:

A kiln moisture measurement method and system is provided for measuring the moisture level of a charge of timber in a timber drying kiln. The method includes steps of: transmitting electromagnetic radiation from a transmitter; receiving the electromagnetic radiation at a receiver; wherein the transmitter and receiver are configured such that the electromagnetic radiation passes through at least part of the charge of timber. An electronic data processor determines the gain of the electromagnetic radiation by comparing the intensities of the transmitted and received electromagnetic radiation; and subsequently determines a moisture level of the charge based on the gain of the electromagnetic radiation. 1. A kiln moisture measurement method for measuring the moisture level of a charge of timber in a timber drying kiln , including steps of:transmitting electromagnetic radiation from a transmitter;receiving the electromagnetic radiation at a receiver;wherein the transmitter and receiver are configured such that the electromagnetic radiation passes through at least part of the charge of timber;determining, using an electronic data processor, a property of the electromagnetic radiation by comparing the intensities of the transmitted and received electromagnetic radiation;determining a moisture level of the charge based on the determined property of the electromagnetic radiation.2. The method of claim 1 , wherein the charge of timber has primary dimension claim 1 , and the transmitter and receiver are located such that the received electromagnetic radiation is transmitted through the primary dimension of the charge.3. The method of claim 1 , wherein the primary dimension is the width claim 1 , length or height of the charge of timber.4. The method of any one of the preceding claims claim 1 , wherein the electromagnetic radiation has a frequency in the range of 150 MHz to 4 GHz.5. The method of any one of the preceding claims claim 1 , wherein the electromagnetic radiation ...

Подробнее
10-01-2019 дата публикации

CONTACT-FREE PHOTOMIXING PROBE FOR DEVICE AND INTEGRATED CIRCUIT MEASUREMENT OR CHARACTERIZATION

Номер: US20190011359A1
Автор: Brown Elliott R.
Принадлежит: WRIGHT STATE UNIVERSITY

A device for measuring and characterizing solid-state devices or integrated circuits at RF frequencies up to 1.0 THz and beyond is provided that includes a transmitting photomixing probe structure and a receiving photomixing probe structure. The transmitting photomixing probe structure and the receiving photomixing probe structure are ac-coupled to the solid-state device or integrated circuit in a contact-free manner. 1. A device for measuring or characterizing a solid-state device or an integrated circuit at comprising:a transmitting photomixing probe having an orthorhombic configuration; anda receiving photomixing probe having an orthorhombic configuration;wherein each of the transmitting and photomixing probe and the receiving photomixing probe comprise a photomixer and optical fibers; andwherein the transmitting photomixing probe and the receiving photomixing probe are not in physical contact with the solid-state device or the integrated circuit.2. The device of claim 1 , wherein the transmitting photomixing probe and the receiving photomixing probe are ac-coupled to the solid-state device or the integrated circuit.3. The device of claim 1 , wherein the transmitting photomixing probe and the receiving photomixing probe each comprise a high resistivity substrate and a metallized surface.4. The device of claim 3 , wherein the substrate has a thickness between about 50 and about 500 microns.5. The device of claim 3 , wherein the substrate is selected from the group consisting of silicon (Si) claim 3 , gallium arsenide (GaAs) claim 3 , indium phosphide (InP) claim 3 , gallium nitride (GaN) claim 3 , or a combination of two or more thereof.6. The device of claim 1 , wherein the solid-state device of the integrated circuit is embedded in a tapered planar transmission line claim 1 , and wherein the output from the solid-state device or the integrated circuit is sampled in the tapered planar transmission line.7. The device of claim 1 , wherein the transmitting probe and ...

Подробнее
14-01-2021 дата публикации

System and Method for Inspecting Fused Plastic Pipes

Номер: US20210010951A1
Автор: Bohne Kevin P.
Принадлежит: WorldWide Nondestructive Testing, Inc

A method and apparatus for testing a fuse between two plastic pipes without destroying the fuse is performed in the field. The method and apparatus include a source of X-ray radiation and a scanning plate that has pixels that change state when exposed to this radiation. The source of the X-ray radiation is positioned on one side of the fuse and the scanning plate is positioned on another side so that the x-ray radiation passes through the fuse. The x-ray image from the scanning plate makes visible internal voids, weak fuses, and evidence of movement after the plastic of the fitting/pipes melted and flowed together. With such, the quality of the fitting is evident without cutting or otherwise destroying the fitting and, therefore, only weak or otherwise compromised fittings need be cut and redone. 1. An apparatus for non-destructive testing of a fuse between two plastic pipes , the apparatus comprising:a source of radiation selectively operated to emit an x-ray radiation;a scanning plate for receiving the x-ray radiation;a scanner, the scanner operatively coupled to a computer;a display operatively coupled to the computer;whereas the source of radiation is positioned on one side of the fuse between the two plastic pipes and the scanning plate receives the x-ray radiation that passes through the fuse while the source of radiation is selectively operated to emit the x-ray radiation; andwhereas after the source of radiation is discontinued, the scanning plate is moved to the scanner and scanned into an x-ray image by the scanner for storage by the computer and for display on the display.2. The apparatus of claim 1 , wherein the source of radiation is held on one side of the fuse by a tripod.3. The apparatus of claim 1 , further comprising a lens affixed to the source of radiation claim 1 , the lens is made of Beryllium and the lens allows enough radiation out of the source of radiation so as to penetrate the fuse.4. The apparatus of claim 1 , wherein the scanning plate ...

Подробнее
14-01-2021 дата публикации

Microwave-Based Measuring Device

Номер: US20210010952A1
Принадлежит:

A microwave-based measuring device includes a number n of sensors, each sensor of the number n of sensors being embodied to generate associated sensor data such that, overall, a number n of items of sensor data are generated by way of the number n of sensors. A measurement variable calculation unit is embodied to calculate a number m of measurement variable values depending on the number n of items of sensor data on the basis of values of a number d of parameters. A learning unit is embodied to calculate the values of the number d of parameters on the basis of training data. 11. Microwave-based measuring device () , comprising:{'b': 2', '1', '2', '2', '2', '1', '2', '1', '2', '1', '2, 'i': n', 'i', 'n', 'n, 'a number n of sensors (_ to _), with a respective sensor (_) of the number n of sensors (_ to _) being designed to generate associated sensor data (xi), so that a total of n number of sensor data (x_, . . . , x_n) is generated by means of the number n of sensors (_ to _),'}{'b': 4', '1', '1', '1, 'a measured variable calculation unit () which is designed to calculate a number m of measured variable values (y{circumflex over (\u2003)}_, . . . , y{circumflex over (\u2003)}_m) as a function of the number n of sensor data (x_, . . . , x_n) based on values of a number d of parameters (θ_, . . . , θ_d), and'}{'b': 5', '5', '1', '1', '1, 'img': [{'@id': 'CUSTOM-CHARACTER-00003', '@he': '3.22mm', '@wi': '1.10mm', '@file': 'US20210010952A1-20210114-P00002.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, {'@id': 'CUSTOM-CHARACTER-00004', '@he': '3.22mm', '@wi': '1.10mm', '@file': 'US20210010952A1-20210114-P00003.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, {'@id': 'CUSTOM-CHARACTER-00005', '@he': '3.22mm', '@wi': '1.10mm', '@file': 'US20210010952A1-20210114-P00002.TIF', '@alt': 'custom-character', '@img-content': 'character', '@img-format': 'tif'}, {'@id': 'CUSTOM-CHARACTER-00006', '@he': '3. ...

Подробнее
09-01-2020 дата публикации

RESONANT SENSING DEVICE

Номер: US20200011811A1
Принадлежит:

A sensing device can use electromagnetic resonance to detect properties of a sample. For example, the sensing device can be immersed into a sample, placed in proximity to a sample, or otherwise located within sensing range of a sample. The sensing device can transmit a signal onto the sample and receive a reflected signal using a resonating structure. The sensing device can analyze the reflected signal to detect a constituent in the sample, such as a concentration of the constituent in the sample. 1. A sensing system comprising: a transmitting portion including a first outer conductor portion and a dielectric material disposed at least partially within the first outer conductor portion; and', 'a resonating portion including a second outer conductor portion that forms a resonator cavity; and, 'a sensor including transmit a first signal using the sensor;', 'receive a first reflected signal using the resonator portion of the sensor; and', 'determine a resonant frequency associated with the resonating portion based at least in part on the reflected signal., 'control circuitry electrically coupled to the sensor, the control circuitry being configured to2. The sensing system of claim 1 , wherein the control circuitry is further configured to determine a concentration of a constituent in a sample based at least in part on the resonant frequency.3. The sensing system of claim 1 , wherein the control circuitry is further configured to:transmit a second signal using the sensor;receive a second reflected signal using the resonator portion of the sensor; anddetermine the resonant frequency based at least in part on the first reflected signal and the second reflected signal.4. The sensing system of claim 1 , wherein the control circuitry is configured to determine the resonant frequency based on one or more of an amplitude of the first reflected signal and a phase of the first reflected signal.5. The sensing system of claim 1 , wherein the transmitting portion is proximate to ...

Подробнее
15-01-2015 дата публикации

MICROWAVE ABLATION ANTENNA RADIATION DETECTOR

Номер: US20150015237A1
Автор: Brannan Joseph D.
Принадлежит:

A radiation detector disposed on a microwave antenna assembly is disclosed. The radiation detector includes a receiving antenna adapted to receive errant microwave energy and a rectifier coupled to the receiving antenna that is adapted to rectify at least a portion of the errant microwave energy. A filter is coupled to the rectifier and is adapted to convert the rectified microwave energy into a detection signal. 119-. (canceled)20. A method for detecting microwave energy , the method comprising:receiving microwave energy at a receiving antenna coupled to a microwave antenna assembly;rectifying at least a portion of the microwave energy through at least one rectifier coupled to the receiving antenna; andfiltering the rectified microwave energy through a filter coupled to the at least one rectifier to convert the rectified microwave energy into a detection signal, wherein the filter includes a capacitor, an inductor, and a resistor coupled in series or parallel.21. The method according to claim 20 , further comprising:comparing the detection signal with a predetermined threshold signal; andsuspending supply microwave energy based on the comparison of the detection signal with the predetermined threshold signal.22. The method according to claim 21 , further comprising:providing an alert based on the comparison of the detection signal with a predetermined threshold signal.23. The method according to claim 21 , further comprising:energizing a light-emitting device coupled to the filter, the light-emitting device adapted to operate when the detection signal is above the predetermined threshold signal.24. The method according to claim 20 , further comprising:transmitting the detection signal to a generator coupled to the microwave antenna assembly.25. The method according to claim 24 , further comprising:comparing the detection signal with a reference signal, wherein a ground wire is configured to provide the reference signal to the generator; andsuspending supply ...

Подробнее
10-01-2019 дата публикации

SYSTEM REFERENCE WITH COMPENSATION OF ELECTRICAL AND MECHANICAL STRESS AND LIFE-TIME DRIFT EFFECTS

Номер: US20190013233A1
Автор: Motz Mario
Принадлежит:

Stress compensated systems and methods of compensating for electrical and mechanical stress are discussed. One example system can include a first circuit and a global stress compensation component. The first circuit can be configured to generate a first signal and can comprise at least one local stress compensation component (e.g., employing dynamic element matching, chopping, etc.). The global stress compensation component can comprise one or more stress sensors configured to sense one or more stress components associated with the system. The global stress compensation component can be configured to receive the first signal and to compensate for stress effects on the first signal. 1. A method , comprising:generating at least one reference signal via a reference circuit, wherein generating the reference voltage comprises compensating, via the reference circuit, for stress effects shown via the at least one reference signal, wherein the at least one reference signal comprises at least one of a reference voltage, a reference current, or a reference clock frequency;sensing at least one stress component via at least one stress sensor; andcompensating for the stress effects shown via the at least one reference signal based on the sensed at least one stress component.2. The method of claim 1 , wherein compensating claim 1 , via the reference circuit claim 1 , for the stress effects shown via the at least one reference signal comprises employing dynamic element matching (DEM) to cycle between at least one of a plurality of transistors of the reference circuit or a plurality of resistors of the reference circuit.3. The method of claim 1 , wherein compensating claim 1 , via the reference circuit claim 1 , for the stress effects shown via the at least one reference signal comprises chopping or auto-zeroing at least one of an input signal of an amplifier of the reference circuit or an output signal of the amplifier of the reference circuit.4. The method of claim 1 , wherein ...

Подробнее
03-02-2022 дата публикации

Void Fraction Calibration Method

Номер: US20220034777A1
Принадлежит: M Flow Technologies Ltd

A method produces a void fraction (VF) error curve which correlates an apparent VF with the actual VF of a multi-phase flow, the method comprising (a) using a device to measure a property of the multi-phase flow from which an apparent VF may be calculated; (b) calculating the apparent VF using the measured property from the device; (c) determining the actual VF of the multiphase flow using a radiometric densitometer; (d) using the values from steps (b) and (c) to calculate the VF error; (e) repeating steps (b) through (d) for all expected flow conditions to generate a VF error curve.

Подробнее
16-01-2020 дата публикации

APPARATUS AND METHOD TO IDENTIFY AND MEASURE GAS CONCENTRATIONS

Номер: US20200015708A1
Принадлежит: NOKOMIS, INC.

A method and apparatus is provided for the analysis of gaseous compounds, especially for determining the concentration of a gas or gases in a gas mixture by microwave spectroscopy. Microwave radiation is generated at one or more frequencies the gas is most responsive to, transmitted by antenna, passed through the gas under test, received by antenna, and the absorption and/or reflection of the microwave radiation is measured by means such as digitization and analysis using the FFT spectrum versus energy response generated, the response subsequently used to calculate the gas concentration. 1. An apparatus for determining a concentration of gasses in a gas mixture , said apparatus comprising:a transmit antenna coupled to said at least one microwave generator, said transmit antenna configured to transmit an electromagnetic energy emission spectrum through the gas mixture in a response to a microwave radiation coupled thereto;at least one microwave generator tuned to responsive frequencies of the gas, said at least one microwave generator configured to couple said microwave radiation to said transmit antenna;a receive antenna configured to capture an electromagnetic energy difference between a transmitted electromagnetic energy emission spectrum and an electromagnetic energy emission spectrum being absorbed or reflected by gaseous molecules in the gas mixture;a receiver coupled to said receive and/or transmit antenna, said receiver configured to convert said electromagnetic energy difference into a digital signal; anda control member configured to process said digital signal in accordance with one or more algorithms, said control member configured to analyze said electromagnetic energy difference and determine concentration(s) of gasses in the gas mixture based on an analysis of said difference.2. The apparatus of claim 1 , wherein said control member is configured to identify a presence or an absence of a heart failure condition in a subject in a response to measuring ...

Подробнее
17-01-2019 дата публикации

STATE MONITORING METHOD AND STATE MONITORING SYSTEM FOR THERMOSETTING RESIN

Номер: US20190016019A1
Принадлежит:

A state monitoring method for thermosetting resin includes, in a curing treatment of thermosetting resin, detecting a moisture content of the thermosetting resin during the curing treatment; and determining a cross-linking state of the thermosetting resin during the curing treatment based on the detected moisture content. It is possible to determine the cross-linking state of the thermosetting resin by detecting the moisture content of the thermosetting resin during the curing treatment. 1. A state monitoring method for thermosetting resin , the method comprising:in a curing treatment of thermosetting resin,detecting a moisture content of the thermosetting resin during the curing treatment; anddetermining a cross-linking state of the thermosetting resin during the curing treatment based on the detected moisture content.2. A state monitoring method for thermosetting resin , the method comprising:in a curing treatment of thermosetting resin,a step of detecting a moisture content of the thermosetting resin during the curing treatment; anda step of calculating a cross-linking state of the thermosetting resin during the curing treatment based on the detected moisture content.3. The state monitoring method for thermosetting resin of claim 2 ,wherein the moisture content of the thermosetting resin is 0.03% to 0.05%.4. The state monitoring method for thermosetting resin of claim 3 ,wherein, in the curing treatment of the thermosetting resin, a glass transition temperature of the thermosetting resin is 120° C. or higher.5. A state monitoring system for thermosetting resin claim 3 , the system comprising:a detector that detects a moisture content of thermosetting resin during a curing treatment; anda calculator that calculates a cross-linking state of the thermosetting resin during the curing treatment based on the moisture content detected by the detector.6. The state monitoring system for thermosetting resin of claim 5 , the system further comprising:a storage unit that ...

Подробнее
03-02-2022 дата публикации

System, apparatus, and method for remote soil moisture measurement and control

Номер: US20220035366A1
Автор: Canyon James
Принадлежит:

A system for remote moisture monitoring and control includes: a measurement vehicle, including a vehicle body, a vehicle control unit, a transmitter antenna, and a receiver antenna; a moisture control server, including a processor, a non-transitory memory, an input/output, and antenna manager, a multi spectrum analyzer, a sensor manager, an irrigation manager, a soil simulator and a data bus; a vehicle storage facility; an irrigation controller; irrigation valves; a mobile control device; ground sensors. Also disclosed is a method including piloting measurement vehicle; obtaining moisture measurements, including controlling outbound transmission, determining reflected power, calculating dielectric constant via reflection calculation, determining soil moisture via lookup in soil calibration table; obtaining sensor measurements; calculating soil model; and adjusting irrigation. 1. A system for remote moisture monitoring and control , comprising: a vehicle body, wherein the vehicle body is selected from the group consisting of a ground vehicle body and an aviation vehicle body;', 'a vehicle control unit, which is attached to the vehicle body; and', 'at least one transceiver antenna, which is configured to send and receive electromagnetic signals, wherein the electromagnetic signals are reflected back from a ground surface layer of soil in a field; and, 'a) at least one measurement vehicle, further includingb) a moisture control server, which is connected to the measurement vehicle, via a network;wherein the vehicle control unit is configured to control transmission of an outbound electromagnetic signal with a predetermined incident wave power, via the transceiver antenna;wherein the vehicle control unit is configured to determine a reflected power of an inbound electromagnetic signal, which is received via the transceiver antenna, wherein the inbound electromagnetic signal is a reflection in the soil of the outbound electromagnetic signal;wherein the moisture control ...

Подробнее
19-01-2017 дата публикации

SYSTEM AND METHOD FOR MONITORING ENVIRONMENTAL STATUS THROUGH REACTIVE REFLECTORS

Номер: US20170016838A1
Принадлежит:

A system and method for monitoring environmental state that includes a structure element with a base substrate and at least one reflector element integrated to the base substrate, wherein the reflector element is physically configured with at least one response signature that is discretely expressed based on an substance induced environmental condition of the reflector element; and a remote monitor device comprising a transmitter and receiver unit and a controller, wherein the monitor device is configured to interrogate the structure element; detect a response signature corresponding to at least the one reflector element; and map the response signature to a corresponding substance induced environmental condition. 1. A system a base substrate;', 'at least one reflector element integrated to the base substrate, wherein the reflector element is physically configured to have at least one response signature that is discretely expressed based on a substance induced environmental condition of the reflector element; and, 'structure element comprisinga remote monitor device comprising a transmitter and receiver unit and a controller, wherein the monitor device is configured to interrogate the structure element; detect a response signature corresponding to at least the one reflector element; and map the response signature to the corresponding substance induced environmental condition.2. The system of claim 1 , wherein the at least one response signature that is discretely expressed based on the substance induced environmental condition is at least partially dependent on a biochemical reaction between a material of the structure element and a targeted substance contacted within the environment.3. The system of claim 1 , wherein the reflector element is physically configured in an activating configuration with a revealed response signature that is expressed after a reactive element of the structure element is exposed to the substance induced environmental condition.4. The ...

Подробнее
18-01-2018 дата публикации

Applying rf energy according to time variations in em feedback

Номер: US20180017507A1
Принадлежит: Goji Ltd

A method includes processing an object in a cavity by applying radio frequency (RF) energy to the cavity. A first plurality of frequencies is identified, characterized in that a time derivative of a value indicative of a dielectric response of the cavity to RF energy at frequency of the first plurality of frequencies is larger than a first threshold. More energy is applied at frequencies of the first plurality of frequencies than at other frequencies.

Подробнее
18-01-2018 дата публикации

SELECTIVE PIPE INSPECTION

Номер: US20180017508A1
Принадлежит:

A method, apparatus, and system operate to include transmitting a plurality of electromagnetic waves, over a range of frequencies, into a plurality of pipes. The secondary electromagnetic field responses, associated with the electromagnetic waves, from the plurality of pipes are measured. Selective ones of the secondary electromagnetic field responses are canceled or reduced based on a selected pipe for inspection of the plurality of pipes. 1. A method comprising:transmitting electromagnetic energy, at a plurality of frequencies, into a plurality of pipes;measuring secondary electromagnetic field responses, associated with the electromagnetic energy, from the plurality of pipes;calculating weights using pipe information or the secondary electromagnetic field responses;combining a plurality of the responses using the weights, at the plurality of frequencies, to generate a signal insensitive to a subset of the pipes or defects in at least one pipe of the plurality of pipes; anddetermining a feature of the at least one pipe of the plurality of pipes based on the signal.2. The method of claim 1 , further comprising adjusting the weights such that the signal is insensitive to defects of a predetermined size.3. The method of claim 1 , wherein the defects comprise variations in thickness of the at least one pipe claim 1 , variations in relative magnetic permeability or the at least one pipe claim 1 , or variations in electrical conductivity of the at least one pipe.4. The method of claim 1 , wherein determining the feature of the at least one pipe comprises comparing the signal to a library of functions or a forward simulation model.5. The method of claim 1 , wherein the defects comprise variations in electrical conductivity of the at least one pipe.6. The method of claim 1 , wherein combining at least two of the responses comprises combining at least N of the plurality of frequencies to generate the signal claim 1 , through adjustment of the weights claim 1 , that is ...

Подробнее
17-01-2019 дата публикации

APPARATUS AND METHOD FOR SIMULTANEOUS RAMSEY VECTOR MAGNETOMETRY

Номер: US20190018075A1
Принадлежит: LOCKHEED MARTIN CORPORATION

The present disclosure relates to apparatuses and methods to utilize techniques to simultaneously measure Ramsey pulses on a plurality of axes of the magneto-optical defect center material with defect centers. When measuring simultaneously, there is potentially no relative sensitivity loss relative to scalar measurements. Therefore, Ramsey pulses on a plurality of axes of a magneto-optical defect material with defect centers are measured while bypassing the sensitivity loss incurred with sequential measurement techniques. The axes are interrogated simultaneously while allowing for isolation of the individual responses from the signal detected from the magneto-optical defect center material. In some embodiments, the system utilizes a special Ramsey pulse sequence pair or a ‘shifted magnetometry adapted cancellation’ (SMAC) pair to detect and measure the magnetic field acting on the system. 1. A system for magnetic detection , comprising:a magneto-optical defect center material comprising a plurality of defect centers and lattice oriented subsets;a radio frequency (RF) excitation source configured to provide RF excitation to the magneto-optical defect center material;an optical excitation source configured to provide optical excitation to the magneto-optical defect center material;an optical detector configured to receive an optical signal emitted by the magneto-optical defect center material;a bias magnet configured to separate RF resonance responses of the lattice oriented subsets of the magneto-optical defect center material; anda controller configured to:control the optical excitation source and the RF excitation source to apply a first binary code sequence to the magneto-optical defect center material comprised of a first binary code sequence value and a second binary code sequence value using a first RF frequency value;control the optical excitation source and the RF excitation source to apply a second binary code sequence to the magneto-optical defect center ...

Подробнее
17-01-2019 дата публикации

MAGNETOMETER APPARATUS

Номер: US20190018076A1
Принадлежит: LOCKHEED MARTIN CORPORATION

A magnetometer for magnetic detection includes a magneto-optical defect center material having at least one magneto-optical defect center; a radio frequency (RF) exciter system including a radio frequency (RF) excitation source; an optical excitation system including an optical excitation source; an optical detector configured to receive an optical signal based on light emitted by the magneto-optical defect center material due RF excitation and optical excitation provided to the magneto-optical defect center material via the RF excitation source and the optical excitation source, respectively; a magnetic field generator configured to generate a magnetic field detected at the magneto-optical defect center material; and a system controller. 1. A magnetometer for magnetic detection , comprising:a magneto-optical defect center material comprising at least one magneto-optical defect center,a radio frequency (RF) exciter system including a radio frequency (RF) excitation source, the RF exciter system being configured to provide RF excitation to the magneto-optical defect center material;an optical excitation system including an optical excitation source;an optical detector configured to receive an optical signal based on light emitted by the magneto-optical defect center material due to RF excitation and optical excitation provided to the magneto-optical defect center material;a magnetic field generator configured to generate a magnetic field detected at the magneto-optical defect center material; and control the RF excitation source to provide the RF excitation to the magneto-optical defect center material; and', 'control the optical excitation source to provide optical excitation to the magneto-optical defect center material., 'a system controller programmed to2. The magnetometer according to claim 1 , wherein the magnetic field generator comprises a plurality of permanent magnets arranged in a Halbach array.3. The magnetometer according to claim 2 , wherein a first ...

Подробнее
16-01-2020 дата публикации

Microwave Horn Antennas-Based Transducer System for CUI Inspection Without Removing the Insulation

Номер: US20200018688A1
Автор: Amer Ayman, SHEHRI Ali
Принадлежит:

The present disclosure is directed to methods and systems for inspecting insulated equipment for any corrosion under insulation (CUI). The system includes a device comprising transmitter and receiver horn antennas, a vector network analyzer operatively connected to the antennas, and an infrared detector. In the method, a location for inspection of the equipment is identified. A metal jacket surrounding the location is removed without stripping the insulation. Microwaves are transmitted by the transmitted horn antenna at the location, and provide heating at the location. The microwaves are received by the receiver horn antenna after reflection off the equipment. The vector network analyzer analyzes the microwaves. The infrared detector detects infrared waves emitted from the location and develops an infrared image of the inner surface of the equipment. Based on the analysis of the microwaves and the developed image, a programmed processor determines whether CUI exists at the location. 124-. (canceled)25. A method for inspecting insulated equipment for corrosion under insulation using a portable , dual detection device comprising an infrared detector , a transmitter horn antenna , and a receiver horn antenna , the two horn antennas being operatively connected to a vector network analyzer , a controller having a memory storing instructions in the form of code , and a processor configured by executing the instructions therein , the method comprising:transmitting, with the transmitter horn antenna, microwaves towards the insulated equipment at a location suspected of corrosion under insulation;receiving, with the receiver horn antenna, the transmitted microwaves after reflection of the microwaves off the insulated equipment;analyzing, with the vector network analyzer, the transmitted and reflected microwaves, wherein the step of analyzing comprises determining a length of a signal path of the microwave from the transmitter horn antenna to the receiver horn antenna and ...

Подробнее
22-01-2015 дата публикации

Multi-frequency Microwave Sensor for Temperature Independent Measurement of Moisture

Номер: US20150022220A1
Принадлежит: Honeywell ASCa Inc.

Microwave techniques for measuring moisture and other properties of paper and related products without requiring an independent measurement of temperature are provided. A sensor directly measures the reflection or transmission of microwaves at a number of well-chosen frequencies so as to characterize the absorption spectrum of the product. The technique of measuring the parameters of a composition includes: (a) directing incident microwave radiation over a spectrum of wavelengths from an antenna upon the composition; (b) measuring the microwave radiation over the spectrum of wavelengths that emerges from the composition; (c) determining the reflected and/or transmitted transfer function; and (d) relating the transfer function of the composition to the parameters of the composition by applying a theoretic, calibrated, or hybrid model. The product moisture and temperature are extracted from the transfer function. 1. A method of measuring one or more parameters of a composition that comprises the steps of:a. directing microwave radiation over a spectrum of wavelengths from an antenna to be incident upon the composition;b. measuring the microwave radiation over the spectrum of wavelengths that emerges from the composition;c. determining a reflected and/or transmitted transfer function of the composition over the spectrum of wavelengths; andd. relating the determined transfer function of the composition over the spectrum of wavelengths to one or more parameters of the composition by applying a model, with the proviso that an independent temperature measurement of the composition is not required.2. The method of wherein step (d) comprises applying a multivariate model to the determined reflected and/or transmitted transfer function of the composition over the spectrum of wavelengths and predicting the one or more parameters.3. The method of wherein the model is a calibration model that is developed in a calibration process of collecting reference spectra over the spectrum ...

Подробнее
25-01-2018 дата публикации

RF Attenuation Measurement System and Method

Номер: US20180020948A1
Принадлежит: Massachusetts Institute of Technology

In part, disclosure relates to a monitoring system for monitoring RF attenuation of a material. In one embodiment, the system includes a plurality of transmitting antennas; an RF generator having a first output terminal in electrical communication with each of the plurality of transmitting antennas and a second output terminal; a plurality of receiving antennas, each of the receiving antennas having an output terminal, and a processor having a first input terminal in electrical communication with the second output terminal of the RF generator, having a second input terminal in electrical communication with the output terminal of each of the plurality of receiving antennas, and having a first output in electrical communication with a display. In one embodiment, the processor calculates the attenuation of the RF signal in response to the RF signals received by the plurality of receiving antennas through the material. 1. An RF attenuation monitoring system for monitoring RF attenuation of a material , the system comprising:a plurality of transmitting antennas;a RF generator having a first output terminal in electrical communication with each of the plurality of transmitting antennas and a second output terminal;a plurality of receiving antennas, each of the receiving antennas having an output terminal, anda processor having a first input terminal in electrical communication with the second output terminal of the RF generator, having a second input terminal in electrical communication with the output terminal of each of the plurality of receiving antennas, and having a first output in electrical communication with a display,wherein each of the plurality of receiving antennas is positioned to receive RF signals transmitted by each of the plurality of transmitting antennas and the RF signals received by each of the plurality of RF receivers passing through the material along one of a plurality of measurement paths, andwherein the processor calculates the attenuation of ...

Подробнее
24-01-2019 дата публикации

Microwave Tomography System

Номер: US20190021626A1
Принадлежит: Medical Wireless Sensing Ltd

A novel medical imaging system that is based on radio-wave signals at microwave frequencies and has unique properties. The system can be used for various diagnostic applications such as breast cancer detection, brain stroke detection, and assessment of internal bleeding (trauma emergencies).

Подробнее
28-01-2016 дата публикации

Radio-Frequency Nanopore Sensor

Номер: US20160025655A1
Принадлежит: WISCONSIN ALUMNI RESEARCH FOUNDATION

An electrically conductive nanoscale pore may be employed as an antenna to provide precise localized measurements of the impedance-altering characteristics of a molecule such as DNA or RNA or the like passing through the pore. The use of radiofrequency measurements promises high-speed analysis of long molecules (polymers).

Подробнее
28-01-2016 дата публикации

Microwave Plasma Spectrometer Using Dielectric Resonator

Номер: US20160025656A1
Принадлежит:

A dielectric resonator is excited at its natural resonant frequency to produce a highly uniform electric field for the generation of plasma. The plasma may be used as a desolvator, atomizer excitation source and ionization source in an optical spectrometer or a mass spectrometer. 1. A spectrometer comprising a plasma generator , the plasma generator comprising:a dielectric resonator structure having a central axis; anda radiofrequency power source electrically coupled to the dielectric resonator structure to promote an alternating polarization current flow at a natural resonant frequency of the dielectric resonator structure about the axis to generate plasma in an adjacent gas.2. The spectrometer of wherein the radiofrequency power source is electromagnetically coupled to the dielectric resonator structure.31. The spectrometer of wherein the dielectric resonator structure is electrically coupled to the plasma substantially only by induction claim 1 , there being negligible capacitive coupling.4. The spectrometer of wherein the dielectric resonator has a quality factor of greater than 100.5. The spectrometer of wherein the dielectric resonator has electrical resistivity greater than 1×10Ω·cm.6. The spectrometer of wherein the dielectric resonator has a melting point greater than a melting point of copper.7. The spectrometer of wherein dielectric resonator has a dielectric constant with a loss tangent of less than 0.01.8. The spectrometer of wherein the dielectric resonator has a dielectric constant of greater than five.9. The spectrometer of wherein the dielectric material is selected from the group consisting of alumina (AlO) and calcium titanate (CaTiO).10. The spectrometer of wherein the plasma is generated in an adjacent gas claim 1 , the gas selected from the group consisting of nitrogen or air.11. The spectrometer of wherein the dielectric resonator is selected from the group consisting of a ring and a cylindrical annulus having a central opening along the axis ...

Подробнее
26-01-2017 дата публикации

Radio-Frequency Nanopore Sensor

Номер: US20170023545A1

An electrically conductive nanoscale pore may be employed as an antenna to provide precise localized measurements of the impedance-altering characteristics of a molecule such as DNA or RNA or the like passing through the pore. The use of radiofrequency measurements promises high-speed analysis of long molecules (polymers).

Подробнее
10-02-2022 дата публикации

MICROSTRIP-TYPE MICROWAVE SENSOR

Номер: US20220042926A1
Принадлежит:

A microstrip-type microwave sensor for the measurement of the dielectric properties of a solid or liquid material, constituted by a main line and two connected transmission lines integral at one of their extremities to the main line, the main line and two connected transmission lines being spaced from one another by a slot and being made integral with a substrate. The main line is connected to an electrical circuit by each of its two extremities to inject a sinusoidal signal, and wherein said main line has a width giving it an impedance in the range 50 Ohm, the two connected transmission lines being of the same width and of a length equal to one quarter of the wavelength guided in the substrate, the substrate having a height or thickness giving it flexibility or rigidity, the substrate being applied to a metallic support formed of a layer of metallic material. 1. A microstrip-type microwave sensor for the measurement of the dielectric properties of a solid or liquid material , constituted by a main line and at least two connected transmission lines integral at one of their extremities to the main line , the main line and the at least two connected transmission lines being spaced from one another by a slot and being made integral with a substrate , wherein the main line is connected to an electrical circuit by each of its two respective extremities to inject a sinusoidal signal , and wherein said main line has a width giving it an impedance in the range 50 Ohm , the at least two connected transmission lines being substantially of the same width and of a length equal to at least one quarter of the wavelength guided in the substrate , the substrate having a height or thickness giving it flexibility or rigidity , the substrate being applied to a metallic support formed of a layer of metallic material.2. A microstrip-type microwave sensor according to claim 1 , wherein the assembly formed by the substrate and the lines is electrically insulated by means of an insulating ...

Подробнее
24-01-2019 дата публикации

SENSOR CIRCUIT

Номер: US20190025235A1
Принадлежит:

Provided is a technology for detecting a change in an inspection target containing moisture. A sensor circuit () for inspecting property of an inspection target includes an oscillator () having a resonance frequency of 30 to 200 GHz, and a detection circuit () that estimates an oscillation frequency of the oscillator. 1. A sensor circuit for inspecting property of an inspection target , comprising:an oscillator comprising a cross-coupled transistor which oscillates at a frequency of any of 30 to 200 GHz;a counter circuit that counts a frequency of a signal which the oscillator oscillates; anda detection unit that detects a change in the property of the inspection target referring to a change in the counted frequency.)2. (canceled)3. The sensor circuit according to claim 1 , further comprising:a frequency divider that divides the frequency of the oscillator and outputs an output signal having the division-resultant frequency to the counter circuit,wherein the counter circuit counts the frequency of the signal output from the frequency divider for a predetermined period,the sensor circuit further comprises an estimation unit comprising the counter circuit which estimates the frequency of the oscillator referring to the counted result of the counter circuit.4. The sensor circuit according to claim 1 ,wherein the oscillator includes an inductor, and the detection unit uses the inductor for detection.5. The sensor circuit according to claim 1 ,wherein the oscillator includes a capacitor, and the detection unit uses the capacitor for detection.6. The sensor circuit according to claims 3 ,wherein the estimation unit estimates the frequency of the oscillator basing on an operation of the oscillator caused by an enable signal. The present invention relates to a sensor circuit that includes a high-frequency oscillator and detects a change in an inspection target containing moisture.Cost reduction, miniaturization, inspection time reduction, simplicity of operation, and the ...

Подробнее
24-01-2019 дата публикации

Methods and Systems for Characterization of Geochemical Properties of Hydrocarbons Using Microwaves

Номер: US20190025275A1
Принадлежит:

Provided here are methods, apparatuses, and systems directed to the determination of geochemical properties of liquid hydrocarbons based on the dielectric properties of components of the liquid hydrocarbons using microwaves. Also disclosed is a method for characterizing a geochemical property of a liquid hydrocarbon by measuring the dielectric responses from a portion of the liquid hydrocarbon at different predetermined temperatures in two or more microwave resonant cavities to electromagnetic waves at select microwave frequencies, and determining a geochemical property of the liquid hydrocarbon in response to measurements of the dielectric responses. 1. A method for characterizing a geochemical property of a liquid hydrocarbon , the method comprising:exposing a portion of a liquid hydrocarbon at a predetermined temperature in two or more microwave resonant cavities to electromagnetic waves at two or more microwave frequencies to elicit two or more dielectric responses from the portion of the liquid hydrocarbon;measuring the two or more dielectric responses from the portion of the liquid hydrocarbon in response to the electromagnetic waves at the two or more microwave frequencies; anddetermining a geochemical property of the liquid hydrocarbon in response to measurements of the two or more dielectric responses.2. The method of claim 1 , wherein the portion of the liquid hydrocarbon is maintained at the predetermined temperature during the step of measuring the two or more dielectric responses.3. The method of claim 1 , wherein the liquid hydrocarbon is an oil separated from a production fluid containing brine and oil.4. The method of claim 1 , wherein the two or more microwave resonant cavities are of different sizes.5. The method of claim 1 , wherein each of the two or more microwave resonant cavities provide at least four microwave frequencies.6. The method of claim 1 , wherein the two or more microwave frequencies range from 100 MHz to 20 GHz.7. The method of ...

Подробнее
29-01-2015 дата публикации

PAVEMENT MATERIAL MICROWAVE MOISTURE-DENSITY MEASUREMENT METHODS AND APPARATUSES

Номер: US20150028890A1
Автор: Troxler Robert Ernest
Принадлежит:

A portable microwave material gauge for determining the quality of a pavement material is provided. The gauge includes an electromagnetic field generator configured to generate an electric field mode that penetrates into the material wherein the material includes a heterogeneous material including at least one of a pavement material and a soil material, a calibration data set, a sensor of size and shape to support the electric field mode and to determine the response of the pavement material to the electric field wherein determining the response includes determining a change in the permittivity as a function of a change in the quality of the material; and an analyzer configured to correlate the sensor permittivity response to the calibration data set wherein correlating the response includes using stored relationships between the material quality and the sensor response using calibration samples having changes in permittivity as a function of quality. 1. (canceled)2. A portable microwave material gauge for determining the quality of a pavement material comprising:an electromagnetic field generator configured to generate an electric field mode that penetrates into the material wherein the material includes a heterogeneous material including at least one of a pavement material and a soil material;a calibration data set represented by a relationship stored in memory of the portable microwave gauge;a sensor that supports the electric field mode and determines the response of the pavement material to the electric field wherein determining the response includes determining a change in the permittivity as a function of a change in the quality of the material; andan analyzer configured to correlate the sensor permittivity response to the calibration data set wherein correlating the response includes using stored relationships between the material quality and the sensor response using calibration samples having changes in permittivity as a function of quality.3. The portable ...

Подробнее
23-01-2020 дата публикации

MICROWAVE DIELECTRIC ANALYZER

Номер: US20200025694A1
Автор: Schultz John Weber
Принадлежит:

Various examples related to microwave dielectric analyzers and their use are provided. In one example, a microwave dielectric analyzer includes a measurement apparatus having a conductive electrode that can couple to a microwave analyzer and processing circuitry that can determine a dielectric characteristic of the dielectric specimen using a reflection coefficient measured by the microwave analyzer. The dielectric characteristic can be determined using a computational electromagnetic model of the measurement apparatus. The reflection coefficient can be measured by the microwave analyzer with the dielectric specimen in contact with the conductive electrode and/or sandwiched between conductive electrodes. The conductive electrodes can be axially aligned, and the second electrode may not be coupled to the microwave analyzer. 1. A microwave dielectric analyzer , comprising: a first conductive electrode configured to couple to a microwave analyzer; and', 'a second conductive electrode axially aligned with the first conductive electrode, where the second conductive electrode is not coupled to the microwave analyzer; and, 'a measurement apparatus havingprocessing circuitry configured to determine a dielectric characteristic of a dielectric specimen based upon a reflection coefficient measured by the microwave analyzer with the dielectric specimen sandwiched between the first and second conductive electrodes, the dielectric characteristic determined based upon a computational electromagnetic model of the measurement apparatus.2. The microwave dielectric analyzer of claim 1 , wherein the dielectric characteristic is permittivity claim 1 , loss or conductivity of the dielectric specimen.3. The microwave dielectric analyzer of claim 1 , wherein the dielectric characteristic is determined from a look-up table determined using the computational electromagnetic model of the measurement apparatus.4. The microwave dielectric analyzer of claim 3 , wherein the dielectric ...

Подробнее
23-01-2020 дата публикации

METHODS AND APPARATUS FOR WATER DETECTION IN MULTIPHASE FLOWS

Номер: US20200025743A1
Принадлежит:

Methods and apparatus for detecting water in multiphase flows are disclosed. An example apparatus includes a conduit including an inlet to receive a multiphase flow and an electromagnetic sensor coupled to a liquid-rich region of the conduit to measure a permittivity of the multiphase flow, and a water detection manager to determine that water is detected in the multiphase flow based on the permittivity. 1. An apparatus , comprising: an inlet to receive a multiphase flow; and', 'an electromagnetic sensor coupled to a liquid-rich region of the conduit to measure a permittivity of the multiphase flow; and, 'a conduit includinga water detection manager to determine that water is detected in the multiphase flow based on the permittivity.2. The apparatus of claim 1 , wherein the liquid-rich region is disposed at an underside of a horizontal blind tee conduit or disposed at a near-wall region of a vertical conduit.3. The apparatus of claim 1 , wherein the electromagnetic sensor is a radiofrequency (RF) or a microwave frequency open-coaxial probe claim 1 , an RF/microwave local transmission measurement sensor claim 1 , an RF/microwave local resonance sensor claim 1 , a millimeter-wave sensor claim 1 , or an electrical impedance local measurement sensor claim 1 , the electromagnetic sensor to operate at one measurement frequency or a plurality of measurement frequencies.4. The apparatus of claim 1 , wherein the permittivity is a first permittivity claim 1 , the water detection manager further including:a parameter calculator to determine the first permittivity and a second permittivity of the multiphase flow based on electromagnetic data obtained from the electromagnetic sensor; and compare a difference between the first permittivity and the second permittivity to a water detection threshold; and', 'determine that water is detected in the multiphase flow based on the comparison., 'a water detector to5. The apparatus of claim 4 , further including a report generator to ...

Подробнее
02-02-2017 дата публикации

DETECTION OF VOLATILE CHEMICALS USING AN RFID SENSING SYSTEM

Номер: US20170030843A1
Автор: Roundhill David Max
Принадлежит: EMPIRE TECHNOLOGY DEVELOPMENT LLC

Methods, systems, and apparatuses, including computer programs encoded on computer-readable media, for monitoring volatile chemicals. A system includes an radio-frequency identification (RFID) tag composed of a patterned metal. The patterned metal is configured to absorb a volatile chemical. The RFID tag includes a non-volatile memory configured to store identification data. The RFID tag also includes a receiver that receives a signal at a frequency in a frequency range. The frequency is based upon an amount of the volatile chemical absorbed in the patterned metal. A transmitter of the RFID tag transmits the identification data in response to receiving the signal. The strength of the transmitted identification data is based upon an amount of the absorbed volatile chemical. 1. A non-transitory computer-readable medium comprising instructions stored thereon , the instructions comprising:instructions to broadcast a request signal over a request frequency range;instructions to receive a first response from a radio-frequency identification (RFID) tag in response to broadcasting the request signal at a first request frequency within the request frequency range, wherein the RFID tag is composed of a patterned metal, and wherein the patterned metal absorbs a first volatile chemical; andinstructions to determine a level of the first volatile chemical absorbed in the patterned metal based upon the first request frequency.2. The non-transitory computer-readable medium of claim 1 , wherein the instructions further comprising:instructions to receive a second response from the RFID tag in response to broadcasting the request signal at a second request frequency within the request frequency range, wherein the patterned metal absorbs a second volatile chemical; andinstructions to determine a level of the second volatile chemical absorbed in the patterned metal based upon the second request frequency.3. The non-transitory computer-readable medium of claim 1 , wherein the patterned ...

Подробнее
04-02-2016 дата публикации

Fano resonance microwave spectroscopy of high absorption matter

Номер: US20160033422A1

The invention is a method of Fano resonance microwave spectroscopy of high absorption matter. The method comprises: embedding a magnetic-dipolar-mode (MDM) ferrite disk in the microwave cavity, loading a sample of the high absorption matter in the microwave cavity, using a bias magnetic field to tune the MDM resonance frequency of the ferrite disk to the resonance frequency of the cavity; and observing the symmetric Lorentz-like lineshape of the resonance peaks that are obtained.

Подробнее
04-02-2016 дата публикации

Millimeter Wave Scanning Imaging System

Номер: US20160033423A1
Принадлежит:

A millimeter wave scanning imaging system for scanning objects comprises a transport means for transporting the objects in a first direction, a millimeter wave measurement system and a scanning system. The millimeter wave measurement system comprises a transmitter coupled to a first antenna and a receiver coupled to a second antenna, which are arranged distant to each other and form a gap through which the objects can be transported. The scanning system generates a synchronous arc-shaped movement of the first antenna and the second antenna. The signal from the transmitter is converted from Hmode into Hmode and coupled via a rotary joint in Hmode to the first antenna, thus maintaining the orientation or polarization of the signal constant with respect to the transport means over rotation. 1. Millimeter wave scanning imaging system , for scanning objects , the system comprising:a transport means for transporting the objects in a first direction,a millimeter wave measurement system comprising a transmitter system coupled to a first antenna, and a receiver system coupled to a second antenna, the first antenna spaced from the second antenna by a distance sufficient to form a gap through which the objects can be transported by the transport means,a scanning system configured to move the first antenna and the second antenna along an arc-shaped path that crosses the transport means, a portion of the path being at a right angle to the first direction,wherein the first antenna and the second antenna are rotatable synchronous to each other,{'sub': 11', '11, 'wherein the transmitter system is configured to generate an Hmode signal and propagate the Hmode signal to the first antenna via sequentially a first stationary circular waveguide, a first rotary joint, and a first rotating circular waveguide, and'}wherein the first antenna comprises a circular antenna, a conical antenna, or a circular conical antenna.2. Scanning imaging system according to claim 1 , wherein the ...

Подробнее
05-02-2015 дата публикации

System, Method, and Apparatus for Bubble Detection in a Fluid Line Using a Split-Ring Resonator

Номер: US20150033823A1
Автор: Blumberg, JR. David
Принадлежит:

A system, method, and apparatus for detecting at least one condition of interest relating to a tube, e.g. the presence of an air bubble. In some embodiments, the sensor includes antennas, a split-ring resonator, a frequency generator capable of generating frequencies in the microwave range, and a detection component. The detection component may estimate at least one parameter of received microwave energy in order to determine if a condition of interest exists. 1. A system for detecting an at least one condition of interest relating to a tube comprising:a split-ring resonator component configured to interface with the tube; anda detection component operatively coupled to the split-ring resonator component, the detection component configured to detect the at least one condition of interest.2. The system according to claim 1 , wherein the split-ring resonator component includes a split-ring resonator.3. The system according to claim 2 , wherein the detection component detects the at least one condition of interest by estimating at least one parameter corresponding to the split-ring resonator.4. The system according to claim 3 , wherein the at least one parameter is selected from the group consisting of a group delay caused by an inner volume of the tube claim 3 , a propagation delay caused by the inner volume of the tube claim 3 , a group delay caused by the split-ring resonator claim 3 , a phase shift caused by the split-ring resonator claim 3 , a resonance frequency of the split-ring resonator claim 3 , a phase angle of a test signal applied the split-ring resonator claim 3 , an amplitude of the test signal applied to the split-ring resonator claim 3 , a frequency response of the split-ring resonator claim 3 , a frequency response within a predetermined frequency range of the split-ring resonator claim 3 , a Q of the split-ring resonator claim 3 , a bandwidth of a split-ring resonator claim 3 , a peak of a bandwidth response of the split-ring resonator claim 3 , an ...

Подробнее
17-02-2022 дата публикации

OBSERVATION DEVICE, AND OBSERVATION METHOD

Номер: US20220050063A1
Автор: INOUE Shuhei
Принадлежит:

An observation device includes a mixer, a detector, a variable attenuator, a calibration information setting module, and an observation data generating module. The mixer mixes an RF signal of an observation object with a local signal to generate an IF signal. The detector detects the IF signal to generate a detection signal. The variable attenuator is connected between the mixer and the detector to attenuate the IF signal. The calibration information setting module sets calibration information from a change of intensity of the detection signal according to a value of the variable attenuator. The observation data generator generates observation data of the RF signal by using the intensity of the detection signal obtained in a state where the value of the variable attenuator is fixed and the calibration information. 1. An observation device , comprising:a mixer configured to mix a radio frequency (RF) signal and a local signal of an observation object, and to generate an intermediate frequency (IF) signal;a detector configured to detect the IF signal, and to generate a detection signal;a variable attenuator, connected between the mixer and the detector, configured to attenuate the IF signal; anda processing circuitry configured to set calibration information from a relationship between a change in a value of the variable attenuator and a change in an intensity of the detection signal.2. The observation device according to claim 1 , wherein the processing circuitry is further configured to generate observation data of the RF signal by using the intensity of the detection signal obtained in a state where the value of the variable attenuator is fixed and the calibration information.3. The observation device according to claim 2 , wherein the calibration information is set for each frequency of the IF signal.4. The observation device according to claim 2 , wherein the variable attenuator comprises:a first fixed resistance circuit and a second fixed resistance circuit, ...

Подробнее
17-02-2022 дата публикации

Highly-multiplexed nems-array readout system based on superconducting cavity optomechanics

Номер: US20220050064A1

A NEMS readout system includes a sensor array comprising a plurality of sensors. Each sensor of the plurality of sensors including a resonator with frequency characteristics different from the resonator of each other sensor of the plurality of sensors. A readout signal indicative of a plurality of output signals is collected from the sensor array. Each output signal of the plurality of output signals corresponding to one of the plurality of sensors. An analysis of the plurality of output signals is performed to identify a plurality of resonant frequencies and to detect a frequency shift associated with at least one of the plurality of resonant frequencies.

Подробнее
17-02-2022 дата публикации

Observation signal generation device, observation device, observation signal generation method, and observation method

Номер: US20220050065A1
Автор: Shuhei Inoue
Принадлежит: Furuno Electric Co Ltd

An observation signal generation device includes a local signal generator, a first mixer which mixes an RF signal to be observed with the local signal and outputs a first IF signal, a second mixer which mixes the RF signal and the local signal and outputs a second IF signal, an first IF filter which includes a first intermediate frequency obtained by subtracting a frequency of the local signal from a first frequency of the RF signal in a passband, includes a second intermediate frequency obtained by subtracting a frequency of the RF signal from the frequency of the local signal in an attenuation band, and filters the first IF signal to generate a first observation signal, and an second IF filter includes the first intermediate frequency in the attenuation band and the second intermediate frequency in the passband, and filters the second IF signal to generate a second observation signal.

Подробнее
17-02-2022 дата публикации

Water vapor observation device and water vapor observation method

Номер: US20220050212A1
Принадлежит: Furuno Electric Co Ltd

A water vapor observation device includes a water vapor index acquisition module which acquires a water vapor index calculated based on radio wave intensities of at least two frequencies out of radio waves received by a microwave radiometer, a global navigation satellite system (GNSS) precipitable water vapor acquisition module which acquires a GNSS precipitable water amount calculated based on an atmospheric delay of a GNSS signal received by a GNSS receiver, a correlation data generation module which generates correlation data between the water vapor index and the GNSS precipitable water amount based on the water vapor index and the GNSS precipitable water amount at a plurality of time points during a predetermined period, and a precipitable water vapor calculation module which calculates a precipitable water amount based on the correlation data from the water vapor index obtained based on the microwave radiometer.

Подробнее
05-02-2015 дата публикации

High Sensitivity Tunable Radio Frequency Sensors

Номер: US20150035546A1
Принадлежит:

Disclosed are highly sensitive and tunable RF sensors that provide detection and analysis of single cells and particles. The tunable RF sensors are configured as tunable interferometers, wherein cells or particles to be analyzed are passed through a channel, such as a microfluidic channel, across waveguides corresponding to reference and test branches of the interferometers. A network analyzer coupled to the interferometers can be configured to measure a plurality of scattering parameters, such as transmission scattering coefficients (S) of the reference and test branches, to evaluate characteristics of cells passing through the channel. A plurality of tunable interferometers may be employed, each interferometer operating in different frequency bands such that information obtain from the plurality of interferometers may be combined to provide further information.

Подробнее
05-02-2015 дата публикации

TIRE INSPECTION USING MICROWAVE IMAGING METHODOLOGIES

Номер: US20150035547A1
Принадлежит:

A method of inspection of a tire was developed using microwave imaging comprising the steps of selecting a plurality of regions from within a tire to be imaged; determining the dielectric properties of the tire components in each of the selected regions in a plurality of frequency bands; selecting a specific location on a tire to be imaged; providing a scanning platform for microwave imaging of the tire; imaging the selected location on a tire using microwave imaging at a plurality of microwave scanning frequencies and at a selected microwave polarization to obtain images of the internal state of the sample; and filtering the images to remove the effects of curvature of the selected location of the tire. 1. A method of inspection of a tire using microwave imaging comprising the steps of:selecting a plurality of regions from within a tire to be imaged;determining the dielectric properties of the tire components in each of the selected regions in a plurality of frequency bands;selecting a specific location on a tire to be imaged;providing a scanning platform for microwave imaging of the tire;imaging the selected location on a tire using microwave imaging at a plurality of microwave scanning frequencies and at a selected microwave polarization to obtain images of the internal state of the sample; andfiltering the images to remove the effects of curvature of the selected location on the tire.2. The method of wherein the step of determining the dielectric properties further comprises preparing a plurality of samples representing the selected regions from within the tire and measuring the dielectric properties of each of the samples in a plurality of frequency bands.3. The method of wherein the measuring step comprises frequencies in the S-band claim 1 , the X-band claim 1 , and the Ku-band.4. The method of wherein the measuring step comprises a two-port claim 1 , completely filled waveguide measuring technique.5. The method of wherein the imaging step comprises measuring ...

Подробнее
31-01-2019 дата публикации

METHODS AND APPARATUS FOR DIRECT MULTIPLICATION FOURIER TRANSFORM MILLIMETER WAVE SPECTROSCOPY

Номер: US20190033235A1
Принадлежит:

Methods and apparatuses for direct multiplication Fourier transform millimeter wave spectroscopy are disclosed herein. A sample method includes generating at least one pulse of microwave electromagnetic energy. The sample method also includes frequency-multiplying the pulse(s) to generate at least one frequency-multiplied pulse and filtering at least one spurious harmonic of the frequency-multiplied pulse to generate at least one filtered pulse. The spurious harmonic is generated by frequency-multiplying the pulse. The method also includes exciting a sample using the filtered pulse. The method further includes detecting an emission from the sample. The emission is elicited at least in part by the filtered pulse. 1. A method , comprising:generating at least one pulse of microwave electromagnetic energy;frequency-multiplying the at least one pulse to generate at least one frequency-multiplied pulse;filtering at least one spurious harmonic of the at least one frequency-multiplied pulse to generate at least one filtered pulse, the at least one spurious harmonic generated by frequency-multiplying the at least one pulse;exciting a sample using the at least one filtered pulse; anddetecting an emission from the sample, the emission elicited at least in part by the at least one filtered pulse.2. The method of claim 1 , wherein generating the at least one pulse includes generating at least one chirped pulse within a frequency range from about 1 GHz to about 3 GHz.3. The method of claim 1 , wherein the at least one frequency-multiplied pulse has a frequency in a range from about 75 GHz to about 110 GHz.4. The method of claim 1 , wherein the filtering includes filtering the at least one spurious harmonic using a cavity bandpass filter.5. The method of claim 1 , wherein the generating includes generating the at least one pulse in response to a trigger signal.6. The method of claim 5 , wherein the detecting includes detecting the emission in response to the trigger signal.7. The ...

Подробнее
12-02-2015 дата публикации

SYSTEMS AND METHODS FOR MICROWAVE JAMMING OF MOLECULAR RECOGNITION

Номер: US20150041457A1
Принадлежит:

Systems and methods include directing limited frequencies of microwave signals toward target molecules, driving a motion of the target molecules to impact molecular recognition. In one implementation, a microwave spectra associated with the rotational modes of a target molecule is obtained. From peaks in the spectra, a mode of molecular movement is identified and a microwave signal profile is generated for driving a motion of binding portions of the molecule associated with the identified mode. Microwave signals are generated based on the signal profile for output by antennas. For example, the microwave signals can be can be used to impede the binding of quorum sensing molecules by receptors of . In one implementation, the antennas can be placed in a catheter for placement in a patient. In another implementation, the antennas can be placed in a sleeve or other device for use adjacent to the skin of a patient. 1. A method for generating a microwave biological control signal comprising:identifying a molecule associated with a biological event;obtaining a microwave spectrum associated with rotational modes of the molecule;identifying a mode of molecular movement associated with one or more peaks in the spectrum;identifying one or more binding molecule portions associated with the identified mode;generating, by a processor, a microwave signal profile for driving a motion of the one or more binding molecule portions; andgenerating one or more microwave signals based on the signal profile;wherein the one or more peaks comprises a first peak and a second peak and the one or more microwave signals includes a first microwave signal, the frequency of the first microwave signal hopping between frequency ranges corresponding to the first peak and the second peak.2. The method of claim 1 , wherein the molecule is polar.3. The method of further comprising inducing a dipole moment in the molecule.4. The method of claim 1 , wherein the molecule has an induced dipole moment.5. The ...

Подробнее
09-02-2017 дата публикации

RADIO FREQUENCY MATERIAL ANALYSIS UTILIZING PHASE

Номер: US20170038311A1
Автор: Conrad William Thomas
Принадлежит:

Briefly, embodiments of the present invention describe an inexpensive, accurate, rapid and automated method to detecting bubbles, foreign object, debris, dissimilar material or property changes in a liquid, lubricant, compressed gas or fine solid. This method uses the vector signal analysis [also known as a phase-gain meter or automatic network analysis] phase change in the transmitted energy versus the reflected energy in radio waves to detect bubbles, foreign object, debris, dissimilar material or property changes in a liquid, lubricant, compressed gas or fine solid using one, two or three antennas or a coil. This method describes the means by which to develop the specific sensor for the intended application. This method also describes the method by which to develop and tune a specific sensor for an exact application. This method also describes the type of sensor that would be used with the described method of detection. This method also describes the application of a sensor employing this method that includes: medical devices, printer ink, manufacturing/refining processes, industrial food processing, engine fuel monitoring, specific property sensing and lubricant property sensing. 1. A method to detect bubbles , foreign object , debris , dissimilar material or property changes in a liquid , lubricant , compressed gas or fine solid by observing the radio frequency change of phase in a single port [and optional ground plane] , two port or three port network vector in the transmitted versus reflected signal of radio frequency energy applied to an antenna(s) near the sample area or a single applied to a port coil of wire around the sample area to detect bubbles , foreign object , debris , dissimilar material or property changes in a liquid , lubricant , compressed gas or fine solid with applications that include medical devices , printer ink , manufacturing/refining processes , industrial food processing , fuel monitoring , specific property sensing and lubricant ...

Подробнее
24-02-2022 дата публикации

Integrated circuit and sensor system

Номер: US20220057338A1
Принадлежит: Tokyo Institute of Technology NUC

A thin film has a band gap of 2.2 eV or more and in which a crystal includes an atomic vacancy and an electron, a microwave irradiation system configured to irradiate the thin film with a microwave in response to driving from outside, an excitation unit configured to excite the electron included in the thin film in response to driving from outside, and a detector configured to detect, as an electric signal, at least either one of an intensity of light outputted from the thin film when the electron transitions from an excited state to a ground state and a change in conductivity of the thin film based on excitation.

Подробнее
24-02-2022 дата публикации

METHOD FOR ANALYSING THE SPACE ENVIRONMENT AND ASSOCIATED DEVICE

Номер: US20220057339A1
Принадлежит:

A method for analysing radiation emitted by the upper atmosphere, including the steps of collecting a beam coming from a direction (h, A) of the atmosphere, polarising the collected beam, selecting at least one frequency range of the collected beam and measuring an intensity of the at least one frequency range of the collected and polarised beam (I(θ,t)) according to the angle θ(t). The method includes the step of determining, from the values of I(θ,t) collected on a rotation of at least Π/2 radians of the variable angle polariser:—at least one physical and/or chemical and/or electromagnetic parameter of the upper atmosphere, and/or a variation of at least one physical and/or chemical and/or electromagnetic parameter of the upper atmosphere, and/or—a probability of malfunction and/or degradation of networks and/or electrical and/or electronic equipment and/or systems and/or devices. 1. A method for analysing radiation emitted by the upper atmosphere comprising the steps:collecting a beam originating from a direction (h, A) of the atmosphere;polarizing the collected beam by selecting a direction of polarization of the collected beam for each value of an angle θ(t) varying over time t, the angle θ(t) being formed between an axis of polarization of a variable angle polarizer and a reference direction,selecting at least one frequency range of the collected beam;measuring an intensity of the at least one frequency range of the collected and polarized, as a function of the angle θ(t), beam (I(θ,t)); and at least one physical and/or chemical and/or electromagnetic parameter of the upper atmosphere, and/or a variation of at least one physical and/or chemical and/or electromagnetic parameter of the upper atmosphere; and/or', 'a probability of malfunction and/or degradation of networks and/or installations and/or systems and/or electrical and/or electronic devices., 'determining, only from values of I(θ,t) collected over a rotation of at least π/2 radians of the variable ...

Подробнее
24-02-2022 дата публикации

SENSOR DEVICE, WATER AMOUNT MEASUREMENT DEVICE, WATER AMOUNT MEASUREMENT METHOD, INFORMATION PROCESSING DEVICE, AND INFORMATION PROCESSING METHOD

Номер: US20220057435A1
Принадлежит:

A sensor device according to an embodiment of the present technology includes a sensor head and a measurement unit. The sensor head includes a first probe and a second probe, the first probe including a first antenna section used for transmission, the second probe including a second antenna section used for reception, the second probe being situated at a specified distance from the first probe and facing the first probe. The measurement unit includes a signal generator that generates a measurement signal that includes information regarding characteristics of a propagation of an electromagnetic wave in a medium between the first and second antenna sections. 1. A moisture sensing device , comprising:a first arm;a second arm;a coupling portion disposed between the first arm and the second arm, wherein the coupling portion maintains a distance between the first arm and the second arm;first wiring layers that are provided in the first arm, wherein the first wiring layers include a first stripline or a first microstripline including a first surface layer and a first internal layer;second wiring layers that are provided in the second arm, wherein the second wiring layers include a second stripline or a second microstripline including a second surface layer and a second internal layer;a first electromagnetic wave absorption layer covering a part of the first wiring layers;a second electromagnetic wave absorption layer covering a part of the second wiring layers;a transmitting antenna section including a part of the first wiring layers;a reception antenna section including a part of the second wiring layers; anda measurement unit, wherein the measurement unit generates a measurement signal regarding the characteristics of a propagation of an electromagnetic wave between the transmission antenna section and the reception antenna section,wherein the transmitting antenna section and the reception antenna section face each other.2. The moisture sensing device according to claim ...

Подробнее
07-02-2019 дата публикации

METHOD FOR BUBBLE DETECTION IN A FLUID LINE USING A SPLIT-RING RESONATOR

Номер: US20190041362A1
Автор: Blumberg, JR. David
Принадлежит:

A method for detecting at least one condition of interest relating to a tube, e.g. the presence of an air bubble. In some embodiments, the sensor includes antennas, a split-ring resonator, a frequency generator capable of generating frequencies in the microwave range, and a detection component. The detection component may estimate at least one parameter of received microwave energy in order to determine if a condition of interest exists. 1. A method for detecting a bubble , the method comprising:generating microwave energy;transmitting the microwave energy from an antenna;applying the transmitted microwave energy to a split-ring resonator said split ring resonator adjacent to a tube;receiving the microwave energy from the antenna and the split-ring resonator; anddetecting a bubble within the tube and adjacent to the split-ring resonator using the received microwave energy.2. The method according to claim 1 , further comprising varying at least one parameter of the microwave energy in response to an existence of the bubble.3. The method according to claim 1 , further comprising estimating at least one parameter corresponding to the split-ring resonator to detect the bubble.4. The method according to claim 3 , wherein the at least one parameter is selected from the group consisting of a group delay caused by an inner volume of the tube claim 3 , a propagation delay caused by the inner volume of the tube claim 3 , a group delay caused by the split-ring resonator claim 3 , a phase shift caused by the split-ring resonator claim 3 , a resonance frequency of the split-ring resonator claim 3 , a phase angle of a test signal applied the split-ring resonator claim 3 , an amplitude of the test signal applied to the split-ring resonator claim 3 , a frequency response of the split-ring resonator claim 3 , a frequency response within a predetermined frequency range of the split-ring resonator claim 3 , a Q of the split-ring resonator claim 3 , a bandwidth of a the split-ring ...

Подробнее
18-02-2016 дата публикации

METHOD FOR STANDOFF DETECTION AND ANALYSIS OF OBJECTS

Номер: US20160047757A1
Принадлежит:

A method for standoff detection and analysis of objects comprises sending a signal through an inspection area, from a transmitter to a receiver, wherein the signal travels through objects in its path. If the signal encounters an object, through which it must travel, the speed of signal distribution decreases and its amplitude drops. A processor then determines the amplitude of the signal and whether the amplitude is above a given threshold, and if the threshold is met, further determining the shift in length of the signal's optical path, determining the thickness of the object, calculating the dielectric permittivity constant, and comparing this constant to known values of different materials to determine a preselected group of materials, to which the object in the inspection area belongs, and whether the inspected object belongs to a preselected group of dangerous objects. A system for detecting and analyzing such materials is also disclosed. 1. A method for detecting and analyzing an object in a monitored area , comprising:emitting an electromagnetic/microwave (EM/MW) signal via at least one transmitter through the monitored area,transmitting said EM/MW signal through the monitored area, said signal transmitting through any object along a path directed towards at least one receiver located at a distance opposite of said one transmitter for receiving said signal,said receiver detecting an amplitude and a phase (complex amplitude) of a received EM/MW signal transmitted through the monitored area,said receiver further performing a first processing of said received signal to determine whether said amplitude is above a preset amplitude threshold,said receiver further performing a second processing of said received signal if said preset amplitude threshold is met, said second processing comprising determining a shift in a length of an optical path of said EM/MW signal, compared to an optical path of the same signal through a free space, said shift occurring due to said ...

Подробнее
06-02-2020 дата публикации

FABRIC IDENTIFYING METHOD, APPARATUS, AND SYSTEM

Номер: US20200042822A1
Автор: CHAE Yeon Kyung
Принадлежит:

Disclosed is a fabric identifying system including a fabric identifying apparatus for identifying the type of a fabric of clothing and a server. The fabric identifying apparatus includes an image camera for obtaining image information on a fabric structure of clothing, a fabric identifier for performing a function of identifying the type of the fabric based on the fabric structure of the image information. The server includes an artificial intelligence model learner for generating a fabric type identifying engine for learning the fabric structure of the image information of the received clothing through a deep neural network, the server is configured to transmit the learned fabric type identifying engine to the fabric identifying apparatus. According to the present disclosure, it is possible to identify the type of the fabric of the clothing by using the artificial intelligence (AI), the artificial intelligence based screen recognition technology, and the 5G network. 1. A method for identifying a fabric of a clothing , comprising:obtaining image information including a fabric structure of the clothing;applying data on the fabric structure included in the image information to a learned artificial intelligence model trained to identify one or more types of fabrics;identifying a type of fabric of the clothing through the learned artificial intelligence model;outputting information on the type of fabric from the learned artificial intelligence model; andtransmitting information on the identified type of fabric to a clothing-related home appliance.2. The method of claim 1 , wherein the learned artificial intelligence model comprises a fabric type identifying engine configured to identify and output the type of fabric of the clothing claim 1 , the fabric type identifying engine being trained with learning data comprising fabric data of a plurality of fabric structures and label data obtained by matching the fabric data to labels of the type of fabric.3. The method of ...

Подробнее
07-02-2019 дата публикации

MILLIMETER-WAVE COUPLER FOR SEMI-CONFOCAL FABRY-PEROT CAVITY

Номер: US20190044211A1
Принадлежит: California Institute of Technology

A coupler for coupling electromagnetic radiation into a cavity, including a metal layer having a reflective surface and forming a ground plane; and one or more waveguides for gigahertz or terahertz electromagnetic radiation embedded in the metal layer. The waveguides each include two openings in the metal layer exposing a dielectric underneath; and a section of the metal layer between the two openings. A plurality of holes in the metal layer are disposed along a perimeter of the openings so as to shape the electric field of the electromagnetic radiation in a cavity coupled to the coupler. 1. A coupler for coupling electromagnetic radiation having a wavelength λ into a cavity , comprising:a mirror including a metal layer having a reflective surface, the metal layer forming a ground plane; two openings in the metal layer exposing a dielectric under the metal layer; and', 'a section of the metal layer between the two openings; and, 'one or more waveguides for gigahertz or terahertz electromagnetic radiation, each of the waveguides embedded in the metal layer and includinga plurality of holes in the metal layer disposed along an edge of the openings, the holes exposing the dielectric under the metal layer.2. The coupler of claim 1 , wherein the holes are disposed around a perimeter of the waveguide.3. The coupler of claim 2 , wherein the holes are disposed in a hexagonal pattern.4. The coupler of claim 2 , wherein the holes have a diameter or a width in a range of λ/15-λ5 or 200-600 micrometers.5. The coupler of claim 2 , wherein the holes are separated by a distance in a range of λ/5-λ/2 or 600-1500 micrometers (distance from a center of one hole to a center of an adjacent hole).6. The coupler of claim 2 , wherein the holes are disposed in 2 claim 2 , 3 claim 2 , or 4 rows.7. The coupler of claim 1 , wherein the openings have a width in a range of λ/5-λ/2.8. The coupler of claim 1 , wherein the openings each have an L shape having a base portion and a back portion.9. ...

Подробнее
15-02-2018 дата публикации

MICROWAVE IMAGING DEVICE AND METHOD

Номер: US20180045658A1
Принадлежит:

A microwave imaging device comprising a conductive enclosure defining an imaging region within it and an array of wideband resonators, each resonator located substantially in a plane defined by the conductive enclosure. 1. A microwave imaging device comprisinga conductive enclosure defining an imaging region within it; andan array of wideband resonators, each resonator located substantially in a plane defined by the conductive enclosure.2. A microwave imaging device according to claim 1 , wherein one or more or all of the wideband resonators are resonant slot antennas mounted against an opening in the conductive enclosure or provided as slot in the conductive enclosure.3. A microwave imaging device according to claim 1 , wherein the conductive enclosure has a cross-sectional area that comprises internal right angles.4. A microwave imaging device according to claim 1 , further comprising conducting cavities shielding individual ones of the wideband resonators on a side of the conductive enclosure opposite to the side at which the imaging region is located.5. A microwave imaging device according to claim 4 , wherein the conducting cavities comprise an electromagnetic wave absorbing material.6. A microwave imaging device according to claim 1 , wherein the resonator comprises:a slot comprising internal right angles within a conducting ground plane and/ora right angled stub located within a slot comprising internal right angles and located in a conducting ground plane.7. A microwave imaging device according to claim 1 , further comprising a lossy matching medium between the resonators and the object under test.8. A microwave imaging system comprising a microwave imaging device according to and computer executable code that claim 1 , when executed by an electromagnetic field modeller claim 1 , creates a representation of the device for use by the modeller in modelling the electromagnetic conditions within the device.9. Computer executable code that claim 1 , when executed ...

Подробнее
15-02-2018 дата публикации

Method and Apparatus for Measuring a Composition of a Multiphase Fluid

Номер: US20180045659A1
Принадлежит:

A method for use in measuring a composition of a multiphase fluid which includes flowing a multiphase fluid through a fluid flow path defined by a wall of a fluid conduit is disclosed. The wall includes an electrically non-conductive material. The method includes establishing an electromagnetic field which extends through the electrically non-conductive material of the wall of the fluid conduit into the fluid and measuring a property of the electromagnetic field over a measurement time period. The method also includes transmitting additional energy through the fluid over the measurement time period independently of the electromagnetic field and measuring the additional energy transmitted through the fluid over the measurement time period. The method may be used to unambiguously determine a composition of a multiphase fluid which has different components. 183-. (canceled)84. A method for use in measuring a composition of a multiphase fluid , the method comprising:flowing a multiphase fluid through a fluid flow path defined by a wall of a fluid conduit, the wall comprising an electrically non-conductive material;establishing an electromagnetic field which extends through the electrically non-conductive material of the wall of the fluid conduit into the fluid;measuring a property of the electromagnetic field over a measurement time period so as to provide a measured temporal variation in the property of the electromagnetic field;transmitting additional energy through the fluid over the measurement time period independently of the electromagnetic field; andmeasuring the additional energy transmitted through the fluid over the measurement time period; andcomprising confining the electromagnetic field in a resonant cavity through which the fluid flow path extends,wherein the electromagnetic field comprises a radio frequency (RF) electromagnetic field and wherein the property of the electromagnetic field comprises a resonant frequency of the electromagnetic field, wherein ...

Подробнее
15-02-2018 дата публикации

SECURITY SCANNING DEVICE

Номер: US20180045852A1
Принадлежит:

A method for scanning an individual with a security device includes providing a scanner, engaging the scanner in a first scanning mode to produce an initial scan of the individual with a controller, producing an initial representation based on the initial scan, determining a property of a second scanning mode based on information from the initial representation, and engaging the scanner in the second scanning mode to produce a second scan of the individual. 135- (canceled)36. A security scanner , comprising:a scanner configured to transmit a scanning beam toward a person and receive a return of the scanning beam from the person; and receive a characteristic of the person to be scanned;', 'determine an allowable dosage based on the received characteristic;', 'adjust a parameter of the scanning beam based on the allowable dosage;', 'cause the parameter to be used in the scanning of the target;', 'detect an indicia of a contraband carried by the person in response to the beam returned from the person; and', 'output a signal indicative of the detected contraband., 'a processing circuit configured to37. The security scanner of claim 36 , further comprising:an operator indicator responsive to the output signal indicative of the detected contraband.38. The security scanner of claim 37 , wherein the operator indicator includes an audible alarm.39. The security scanner of claim 37 , wherein the operator indicator includes a visual display.40. The security scanner of claim 39 , wherein the visual display illustrates a mannequin representative of the person and a shape indicative of the detected contraband.41. The security scanner of claim 36 , wherein the detect an indicia includes detect an indicia of a contraband carried by the person and a location where the contraband is carried on the person in response to return of the scanning beam from the person.42. The security scanner of claim 41 , wherein the output a signal includes an output signal indicative of the detected ...

Подробнее
25-02-2016 дата публикации

METHOD AND APPARATUS FOR PROCESSING FOOD INFORMATION

Номер: US20160051189A1
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided are a method and apparatus for processing food information. The method may include detecting, by a sensor, food information of food consumed by a subject from blood of the subject in a non-invasive manner; and determining, by a processor, a digestive capacity of the subject based on the detected food information. 1. A method of processing food information , comprising:detecting, by a sensor, food information of food consumed by a subject from blood of the subject in a non-invasive manner; anddetermining, by a processor, a digestive capacity of the subject based on the detected food information.2. The method of claim 1 , wherein the food information comprises at least one of a type of nutrients and amounts of nutrients in the food consumed by the subject.3. The method of claim 1 , wherein the determining the digestive capacity comprises:calculating a food information pattern that shows a change in the detected food information according to a lapse of time; andcalculating the digestive capacity based on the food information pattern.4. The method of claim 1 , wherein the detecting is performed by using at least one of a Raman spectroscopy claim 1 , an infrared spectroscopy claim 1 , or a radio-frequency (RF) analysis.5. The method of claim 1 , further comprising displaying at least one of the food information and the digestive capacity.6. The method of claim 1 , further comprising:detecting a bio-signal from the subject; andcalculating a correlation between the food information and the bio-signal.7. The method of claim 6 , wherein the bio-signal is detected in a non-invasive manner.8. The method of claim 6 , wherein the bio-signal comprises at least one of information about blood sugar claim 6 , cholesterol claim 6 , or an amount of body fat of the subject claim 6 , and information about a blood pressure claim 6 , electrocardiogram (ECG) claim 6 , ballistocardiogram (BCG) claim 6 , photoplethysmograph (PPG) claim 6 , or electromyogram.9. The method of claim 6 ...

Подробнее
25-02-2016 дата публикации

Device for near field and far field imaging in the microwave range

Номер: US20160054238A1

A device for the imaging of an object to be studied, combines: a prism made from a material with no losses (non-absorbent) for radiation in the microwave range; a sample holder on a front face of the prism for receiving the object to be studied; and a mobile emitting antenna on a rear face of the prism in order to emit radiation in the microwave range.

Подробнее
13-02-2020 дата публикации

IMPEDANCE-BASED FLOWLINE WATER CUT MEASUREMENT SYSTEM

Номер: US20200049634A1
Принадлежит: Saudi Arabian Oil Company

A water cut measurement tool includes an elongated tubular section configured to flow a multiphase fluid including water and hydrocarbons. The elongated tubular section includes two portions. A first portion has a first diameter. A second portion is axially coupled to the first portion and has a second diameter less than the first diameter. The second portion can receive the multiphase fluid from the first portion. A first electrode is attached to an inner wall of the second portion. A second electrode is attached to the inner wall of the second portion and is positioned diametrically opposite to the first electrode. The two electrodes are configured to measure an impedance of the multiphase fluid flowed through the second portion responsive to a current flowed from the first electrode to the second electrode, and provide the impedance as an output. 1. A water cut measurement system comprising: a first portion having a first diameter,', 'a second portion axially coupled to the first portion and having a second diameter less than the first diameter, and', 'a third portion axially coupled to the second portion and having a third diameter greater than the second diameter; and, 'an elongated tubular section configured to flow a multiphase fluid comprising water and hydrocarbons, the elongated tubular section comprisingan electrode sub-system positioned in the second portion of the elongated tubular section, the electrode sub-system comprising a first electrode and a second electrode configured to flow a current; anda controller coupled to the electrode sub-system, the controller configured to determine a ratio of hydrocarbons to water in the multiphase fluid flowed through the elongated tubular section based on an impedance measured by the electrode sub-system responsive to the current flowed through the electrode sub-system.2. The system of claim 1 , wherein each of the first portion claim 1 , the second portion and the third portion has a circular cross-section.3. The ...

Подробнее
23-02-2017 дата публикации

MEASUREMENTS DEVICE

Номер: US20170052048A1
Принадлежит:

The present invention provides a device for measuring properties of a fluid flow in a pipe, comprising a first (1), second (2) and third pipe section (3), and where the first pipe section (1) comprises a fluid flow modifying feature arranged such that, during use, a liquid part of the fluid flow will form an annular layer (4) at an inner wall of the second pipe section (2), and the second pipe section (2) is arranged downstream of the first pipe section (1) and comprises at least one near field probe (5) having a first frequency range, and at least one full volume field probe (6) having a second frequency range, the upper limit of the first frequency range being lower than the lower limit of the second frequency range; the third pipe section (3) is arranged downstream of the second pipe section (2) and comprises a resonance enabling element (8), such that said element (8) and at least the second pipe section (2) provides a resonator able to capture parts of the frequency range of the full volume field probe (6). 1: A device for measuring properties of a fluid flow which comprises:a pipe through which the fluid is directed, the pipe comprising first, second and third pipe sections;the first pipe section comprising a fluid flow modifying feature arranged such that, during use, a liquid part of the fluid flow will form an annular layer at an inner wall of the second pipe section;the second pipe section being arranged downstream of the first pipe section and comprising at least one near field probe having a first frequency range, the at least one near field probe being configured to apply a low frequency signal to the annular layer from a position flush with an inner wall of the second pipe section and to measure the reflected signal;the second pipe section further comprising at least one full volume field probe having a second frequency range, the at least one full volume field probe being configured to apply a high frequency signal into the second pipe section from a ...

Подробнее
10-03-2022 дата публикации

MEASURING ASSEMBLY FOR THE ANALYSIS OF A FLOWING MEDIUM BY MEANS OF MICROWAVES

Номер: US20220074771A1
Принадлежит:

The present disclosure relates to a measuring assembly comprising: a metallic measuring tube open on both sides for carrying a medium, wherein the measuring tube has an outer circumferential surface, an inner circumferential surface, and at least two apertures, wherein the two apertures extend from the outer circumferential surface to the inner circumferential surface; a dielectric cladding layer, which rests on the inner circumferential surface of the measuring tube; a first microwave antenna, which is arranged in the measuring tube and with which contact can be made through the first aperture; a second microwave antenna which is arranged in the measuring tube and with which contact can be made through the second aperture; wherein the dielectric cladding layer forms a dielectric waveguide, via which microwaves can, at least to some extent, reach from the first microwave antenna to the second microwave antenna. 1. A measuring assembly , comprising:a metallic measuring tube open on both sides for carrying a medium, wherein the measuring tube has an outer circumferential surface, an inner circumferential surface, and at least two apertures, wherein the two apertures extend from the outer circumferential surface to the inner circumferential surface;a dielectric cladding layer that rests on the inner circumferential surface of the measuring tube;a first microwave antenna which is arranged in the measuring tube and with which contact can be made through the first aperture;a second microwave antenna, which is arranged in the measuring tube and with which contact can be made through the second aperture; anda first conductive ring structure and a second conductive ring structure which are each arranged on a face side of the metallic measuring tube and delimit the dielectric cladding layer on the face sidewherein the dielectric cladding layer forms a dielectric waveguide via which microwaves can reach from the first microwave antenna to the second microwave antenna.2. The ...

Подробнее
10-03-2022 дата публикации

IN VITRO SENSOR FOR ANALYZING IN VITRO FLOWING FLUIDS

Номер: US20220074870A1
Автор: Bosua Phillip
Принадлежит:

Apparatus, systems and methods of analyzing an in vitro flowing fluid using an in vitro sensor that operates using non-optical frequencies such as in the radio or microwave frequency bands of the electromagnetic spectrum. The in vitro sensor directs one or more signals that are in the radio or microwave frequency bands of the electromagnetic spectrum into an in vitro flowing fluid and detects one or more responses that result from transmission of the signal(s) into the in vitro flowing fluid. 1. An in vitro sensing system , comprising:an in vitro sensor that is positioned adjacent to an in vitro fluid passageway that contains an in vitro flowing fluid; and{'claim-text': 'at least one transmit antenna and at least one receive antenna, the at least one transmit antenna is positioned and arranged to transmit a signal into the in vitro flowing fluid in the in vitro fluid passageway, wherein the signal is in a radio or microwave frequency range of the electromagnetic spectrum, and the at least one receive antenna is positioned and arranged to detect a response resulting from transmission of the signal by the at least one transmit antenna into the in vitro flowing fluid.', '#text': 'the in vitro sensor includes:'}2. The in vitro sensing system of claim 1 , wherein the at least one transmit antenna and the at least one receive antenna are decoupled from one another; and the in vitro sensor further includes:a transmit circuit that is electrically connectable to the at least one transmit antenna, the transmit circuit is configured to generate the signal to be transmitted by the at least one transmit antenna; anda receive circuit that is electrically connectable to the at least one receive antenna, the receive circuit is configured to receive a response detected by the at least one receive antenna.3. The in vitro sensing system of claim 1 , wherein the radio or microwave frequency range is between about 10 kHz to about 100 GHz.4. The in vitro sensing system of claim 1 , ...

Подробнее
10-03-2022 дата публикации

IN VITRO SENSING METHODS FOR ANALYZING IN VITRO FLOWING FLUIDS

Номер: US20220074871A1
Автор: Bosua Phillip
Принадлежит:

Apparatus, systems and methods of analyzing an in vitro flowing fluid using an in vitro sensor that operates using non-optical frequencies such as in the radio or microwave frequency bands of the electromagnetic spectrum. The in vitro sensor directs one or more signals that are in the radio or microwave frequency bands of the electromagnetic spectrum into an in vitro flowing fluid and detects one or more responses that result from transmission of the signal(s) into the in vitro flowing fluid. 1. An in vitro sensing method , comprising:positioning an in vitro sensor adjacent to an in vitro fluid passageway that contains an in vitro flowing fluid, wherein the in vitro sensor includes at least one transmit antenna and at least one receive antenna;transmitting a signal that is in a radio or microwave frequency range of the electromagnetic spectrum from the at least one transmit antenna into the in vitro flowing fluid in the in vitro fluid passageway; anddetecting a response using the at least one receive antenna resulting from transmission of the signal by the at least one transmit antenna into the in vitro flowing fluid.2. The in vitro sensing method of claim 1 , wherein the at least one transmit antenna and the at least one receive antenna are decoupled from one another; and the in vitro sensor further includes:a transmit circuit that is electrically connectable to the at least one transmit antenna, the transmit circuit is configured to generate the signal to be transmitted by the at least one transmit antenna; anda receive circuit that is electrically connectable to the at least one receive antenna, the receive circuit is configured to receive a response detected by the at least one receive antenna.3. The in vitro sensing method of claim 1 , comprising transmitting the signal in a frequency range that is between about 10 kHz to about 100 GHz.4. The in vitro sensing method of claim 1 , wherein the in vitro flowing fluid comprises a liquid as a primary component.5. The ...

Подробнее