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公开(公告)号：US20220326057A1
公开(公告)日：2022-10-13
申请号：US17837527
申请日：2022-06-10
发明人： Mark Andrew Nelson , Daniel Chenet
IPC分类号： G01F1/7084 , G01F1/684 , G01F1/69
摘要： A flow sensor including a fluid flow path, a first sensor configured to determine a first measurement of a thermal diffusivity and/or a viscosity of a fluid in the fluid flow path, a second sensor configured to determine a second measurement of a fluid flow velocity and/or a volumetric flow rate of the fluid in the fluid flow path, and at least one processor configured to adjust the second measurement based on the first measurement. A method including receiving fluid in a fluid flow path of a flow sensor, determining a first measurement of a thermal diffusivity and/or a viscosity of the fluid in the fluid flow path, determining a second measurement of a fluid flow velocity and/or a volumetric flow rate of the fluid in the fluid flow path, and adjusting the second measurement based on the first measurement.
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公开(公告)号：US20220283007A1
公开(公告)日：2022-09-08
申请号：US17249443
申请日：2021-03-02
发明人： Brian Speldrich , Jamie Speldrich , Paul Bey , Scott Beck , Ian Bentley , Steven Lowery , Richard Bishop
摘要： Methods and apparatuses associated with flow sensing devices are provided. An example flow sensing device may include a sensing element disposed at least partially within the housing, and a plurality of channels disposed within the housing defining a flow path configured to convey a flowing media through the flow sensing device, wherein the flow path is disposed proximate the sensing element such that at least a portion of the flowing media makes direct contact with the sensing element.
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公开(公告)号：US11385086B2
公开(公告)日：2022-07-12
申请号：US17256031
申请日：2019-06-28
发明人： Mark Andrew Nelson , Daniel Chenet
IPC分类号： G01F1/7084 , G01F1/684 , G01F1/69 , G01F1/68
摘要： A flow sensor including a fluid flow path, a first sensor configured to determine a first measurement of a thermal diffusivity and/or a viscosity of a fluid in the fluid flow path, a second sensor configured to determine a second measurement of a fluid flow velocity and/or a volumetric flow rate of the fluid in the fluid flow path, and at least one processor configured to adjust the second measurement based on the first measurement. A method including receiving fluid in a fluid flow path of a flow sensor, determining a first measurement of a thermal diffusivity and/or a viscosity of the fluid in the fluid flow path, determining a second measurement of a fluid flow velocity and/or a volumetric flow rate of the fluid in the fluid flow path, and adjusting the second measurement based on the first measurement.
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公开(公告)号：US11377949B2
公开(公告)日：2022-07-05
申请号：US15997353
申请日：2018-06-04
IPC分类号： G01N27/08 , E21B47/07 , G01N27/22 , G01F1/42 , G01F1/69 , E21B47/06 , E21B49/08 , E21B34/06 , G01F15/00 , G01F1/74 , E21B47/103 , E21B41/00
摘要： Multiphase flow metering is provided. In one possible implementation, a multiphase flow measurement system includes at least one reference temperature sensor at a first position configured to measure a first temperature of a multiphase flow. The multiphase flow measurement system also includes at least one heated temperature sensor at a second position downstream of the reference temperature sensor configured to excite the multiphase flow and measure a second temperature of the multiphase flow.
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公开(公告)号：US20220065671A1
公开(公告)日：2022-03-03
申请号：US17522980
申请日：2021-11-10
申请人： DENSO CORPORATION
发明人： Kengo ITO
摘要： A physical quantity measurement device includes a passage flow channel having an inflow port and an outflow port, a branch flow channel branched from the passage flow channel and having a branch inlet into which the fluid flows from the passage flow channel. The branch flow channel has an inclined branch path inclined with respect to the passage flow channel, and the inclined branch path extends from the branch inlet toward the outflow por. An inclination angle of the branch flow channel at the branch inlet with respect to a virtual straight line connecting the inflow port and the outflow port is smaller than or equal to a predetermined value.
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公开(公告)号：US11248941B2
公开(公告)日：2022-02-15
申请号：US16315735
申请日：2017-06-26
IPC分类号： B22F3/22 , B22F7/06 , G01F1/684 , G01F15/14 , H01C3/00 , B22F7/08 , G01F1/84 , G01R3/00 , H01C1/036 , G01F1/69
摘要： The present disclosure relates to a method for manufacturing a sensor for a thermal, flow measuring device. The method includes, in such case, manufacturing a metal jacketing for a sensor core, introducing the sensor core into the metal jacketing and sintering the metal jacketing with introduced sensor core.
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公开(公告)号：US11237035B2
公开(公告)日：2022-02-01
申请号：US16957195
申请日：2018-12-07
发明人： Yuki Isoya , Hiroaki Hoshika , Takayuki Yogo
摘要： A decrease in the accuracy after switching of the heating state can be reduced. The physical quantity detecting device includes: a flow rate detecting unit configured to include a heating element to measure a flow rate of a fluid to be measured; a heating element control unit configured to switch a control state of the heating element to any one of a heating state and a heating suppression state; and a signal processing unit configured to process a measured value of the flow rate detecting unit. When the heating element control unit switches the control state, the signal processing unit processes an estimated value determined based on a measured value of the flow rate detecting unit before the switching for a predetermined period immediately after the switching.
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公开(公告)号：US20210293594A1
公开(公告)日：2021-09-23
申请号：US17201133
申请日：2021-03-15
申请人： ROHM Co., LTD.
IPC分类号： G01F1/69
摘要： Disclosed is a thermal flow sensor including a base member and a cover. The base member includes a heater. The cover is formed by an SOI substrate including a silicon substrate, a silicon dioxide film, and a silicon film. The silicon film has a recessed portion defined therein. A main flow passage portion is defined by an exposed surface of the silicon dioxide film which is exposed from the silicon film and which defines a bottom surface of the recessed portion, the silicon film defining a side surface of the recessed portion, and a first principal surface of the cover.
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公开(公告)号：US20210270202A1
公开(公告)日：2021-09-02
申请号：US17257782
申请日：2019-09-06
摘要： Provided is an internal combustion engine control device capable of more appropriately correcting an output value of a flow rate sensor that measures a flow rate of air flowing through an intake flow path of an internal combustion engine, and further reducing an error between a corrected air flow rate and an actual air flow rate as compared to a conventional device. For this purpose, the internal combustion engine control device of the present invention includes an arithmetic device 100 including a fundamental frequency derivation unit 104 that derives a fundamental frequency, a flow rate amplitude calculation unit 107 that extracts a radio frequency of a plurality of frequencies equal to or higher than the fundamental frequency from a pulsation waveform based on the output value of the flow rate sensor as a flow rate radio frequency and calculates an amplitude of the flow rate radio frequency for each frequency, a correction amount derivation unit 108 that derives a correction amount based on the amplitude of the flow rate radio frequency for each frequency, and a flow rate calculation unit 109 that calculates a flow rate of air by using the output value of the flow rate sensor and the correction amount.
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公开(公告)号：US11073415B2
公开(公告)日：2021-07-27
申请号：US16658711
申请日：2019-10-21
申请人： Flusso Limited
发明人： Florin Udrea , Andrea De Luca , Claudio Falco , Ethan Gardner , Syed Zeeshan Ali
摘要： We disclose herein a flow and thermal conductivity sensor comprising a semiconductor substrate comprising an etched portion, a dielectric region located on the semiconductor substrate, wherein the dielectric region comprises at least one dielectric membrane located over the etched portion of the semiconductor substrate and a heating element located within the dielectric membrane. The dielectric membrane comprises one or more discontinuities located between the heating element and an edge of the dielectric membrane.
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