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公开(公告)号：US20240324958A1
公开(公告)日：2024-10-03
申请号：US18743201
申请日：2024-06-14
申请人： Case Western Reserve University , The United States as represented by the Department of Veterans Affairs
CPC分类号： A61B5/683 , A61B5/02141 , A61B5/02444 , A61B5/026 , A61B5/6876 , G01L9/0052 , G01L9/06 , A61B2562/12
摘要： A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.
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公开(公告)号：US12085462B2
公开(公告)日：2024-09-10
申请号：US17583462
申请日：2022-01-25
发明人： Mario Motz
IPC分类号： G01L1/22 , G01L1/18 , G01L9/06 , H01L27/088 , H01L29/84
CPC分类号： G01L1/22 , H01L27/088 , H01L29/84
摘要： A stress sensor includes a semiconductor substrate with a first transistor arrangement and a second transistor arrangement. The first transistor arrangement includes a first transistor with a first source-drain channel region and a second transistor with a second source-drain channel region. The first transistor and the second transistor are aligned relative to each other such that the current flow directions in the first and the second source-drain channel regions are opposite to each other. The second transistor arrangement includes a third transistor with a third source-drain channel region and a fourth transistor with a fourth source-drain channel region. The third transistor and the fourth transistor are aligned relative to each other such that the current flow directions in the third and the fourth source-drain channel regions are opposite to each other. The stress sensor generates a gradient-compensated output signal used to determine a mechanical stress acting on the semiconductor substrate.
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公开(公告)号：US20230200734A1
公开(公告)日：2023-06-29
申请号：US18108808
申请日：2023-02-13
申请人： Case Western Reserve University , The United States as represented by the Department of Veterans Affairs
CPC分类号： A61B5/683 , A61B5/026 , A61B5/02141 , A61B5/02444 , A61B5/6876 , G01L9/06 , G01L9/0052 , A61B2562/12
摘要： A sensor apparatus includes at least one substrate layer of an elastically deformable material, the substrate layer extending longitudinally between spaced apart ends thereof. A conductive layer is attached to and extends longitudinally between the spaced apart ends of the at least one substrate layer. The conductive layer includes an electrically conductive material adapted to form a strain gauge having an electrical resistance that varies based on deformation of the conductive layer in at least one direction.
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公开(公告)号：US11686640B2
公开(公告)日：2023-06-27
申请号：US16636808
申请日：2018-08-27
发明人： Hiroki Hashimoto , Kenichi Sakamoto
CPC分类号： G01L19/086 , A41D13/11 , G01L9/06
摘要： A mask fitting level determination device includes a mask inner pressure detection unit inserted between a mask covering a mouth, nose and a face surface of a person to measure a pressure inside the mask. A circuit control unit derives information of a pressure value measured by the mask inner pressure detection unit and generates display information for the person wearing the mask. A determination display unit shows the person the display information generated by the circuit control unit. A battery unit supplies electricity to the circuit control unit and the determination display unit. A power supply switch starts and stops the supply of the electricity to the circuit control unit and the determination display unit. A start switch starts the mask inner pressure detection operation.
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公开(公告)号：US20230160767A1
公开(公告)日：2023-05-25
申请号：US17532687
申请日：2021-11-22
发明人： David P. Potasek , Robert Stuelke
摘要： A pressure sensor includes a Wheatstone bridge circuit including a first resistor, a second resistor, a third resistor, and a fourth resistor having matching output characteristics. The pressure sensor further includes a first trim resistor in series with the Wheatstone bridge circuit, wherein the first trim resistor has output characteristics matching the output characteristics of the first resistor, the second resistor, the third resistor, and the fourth resistor of the Wheatstone bridge. The pressure sensor additionally includes a second trim resistor in parallel or a parallel loop with the Wheatstone bridge circuit, wherein the second trim resistor has output characteristics matching the output characteristics of the first resistor, the second resistor, the third resistor, and the fourth resistor of the Wheatstone bridge.
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公开(公告)号：US11630015B2
公开(公告)日：2023-04-18
申请号：US16947784
申请日：2020-08-17
发明人： Mark Buenz
摘要： Apparatus and associated methods relate to sensing a physical parameter and verifying correct operation of a system used to sense the physical parameter. A sensing device includes four resistive elements configured in a Wheatstone bridge configuration is configured to sense the physical parameter. A biasing network selectively provides first and second biasing conditions to the sensing device. First and second output electrical signals are generated by the sensing device in response to the first and second biasing conditions, respectively, selectively provided to the sensing device. The first and second output electrical signals are each indicative of the parameter value of the physical parameter, but not necessarily equal to one another. A verification module verifies correct operation of the system based on a consistency determination of first and second output electrical signals.
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公开(公告)号：US20230074294A1
公开(公告)日：2023-03-09
申请号：US18049229
申请日：2022-10-24
发明人： Mark Fearis , Paul Owens
摘要： A system and method of analyzing duct pressure within a pipe allows for monitoring and detecting vacuum pressure of gases. The system includes a pressure monitor and a target duct. The pressure monitor preferably includes an alarm light, a speaker, a sensing light, an alert indicator, and a battery alert. The method begins by periodically capturing a plurality of pressure readings inside the target duct with the pressure monitor. Each pressure reading is logged with the pressure monitor. Each pressure reading is compared to each situational alert with the pressure monitor to identify at least one matching alert for at least one specific reading. The matching alert is from the plurality of situational alerts. The specific reading is from the plurality of pressure readings. The matching alert is visually and/or audibly outputted with the pressure monitor, if the matching alert is identified for the specific reading.
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公开(公告)号：US11340124B2
公开(公告)日：2022-05-24
申请号：US16101238
申请日：2018-08-10
申请人： Sentons Inc.
IPC分类号： G06F3/045 , G01L1/18 , G06F3/041 , H03K17/96 , G06F3/043 , H01L41/319 , G01L5/00 , G01L9/06 , G01L9/08 , G01P15/12 , G06F1/16
摘要： A sensor includes a plurality of piezoresistive elements and a plurality of electrical connection terminals. The plurality of piezoresistive elements are fabricated on a first side of a substrate. A second side of the substrate is configured to be coupled to an object where a physical disturbance is to be detected. A plurality of electrical connection terminals are coupled to the first side of the substrate.
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公开(公告)号：US11268867B2
公开(公告)日：2022-03-08
申请号：US15844694
申请日：2017-12-18
IPC分类号： H01L41/047 , H01L41/113 , G01L1/22 , G01L19/00 , G01L9/06 , G01L1/18 , G01L1/16
摘要： According to an embodiment of the present invention, a structure for a strain gauge device is provided. The structure comprises a layer of strain gauge material and one or more contact pads positioned directly on the layer of strain gauge material. The structure further comprises a multiplexer, measuring device, amplifier, analog to digital converter, microcontroller, and wireless adapter. According to the structure, the multiplexer selects a given contact pad pair of the one or more contact pad pairs, the measuring device measures signal generated by the layer of strain gauge material between the given contact pad pair, the amplifier amplifies the measured signal, the analog to digital converter converts the amplified analog signal to a digital signal, the microcontroller processes the digital signal, and the wireless adapter transmits the processed digital signal. In addition, the structure may further comprise a battery to provide energy to the structure.
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公开(公告)号：US11262256B2
公开(公告)日：2022-03-01
申请号：US16624476
申请日：2018-06-21
申请人： EZMEMS LTD.
发明人： Nicola Molinazzi , Tsvi Shmilovich
摘要： A sensor device is disclosed comprising at least one deformable substrate, at least one transducer element formed in or on a surface area of a first side of the deformable substrate, at least one other transducer element formed in or on a surface area of a second side of the deformable substrate, and electrical conductors formed on and/or in the substrate for electrically connecting between and to the transducer elements.
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