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公开(公告)号：US11156547B2
公开(公告)日：2021-10-26
申请号：US16380376
申请日：2019-04-10
Applicant: Infineon Technologies AG
Inventor： Matthias Eberl , Franz Jost , Ilie Poenaru
Abstract: A photoacoustic gas sensor is provided. The photoacoustic gas sensor includes a hermetically sealed housing filled with a reference gas. Further, the photoacoustic gas sensor includes a microphone system arranged inside the housing. The microphone system is configured to generate a first microphone signal comprising a first signal component related to a photoacoustic excitation of the reference gas and a second microphone signal comprising a second signal component related to the photoacoustic excitation. The photoacoustic gas sensor additionally includes a circuit configured to generate an output signal based on the first microphone signal and the second microphone signal by destructively superimposing a third signal component of the first microphone signal related to mechanical vibrations of the photoacoustic gas sensor and a fourth signal component of the second microphone signal related to the mechanical vibrations.
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公开(公告)号：US11137376B2
公开(公告)日：2021-10-05
申请号：US16408712
申请日：2019-05-10
Applicant: Infineon Technologies AG
Inventor： Matthias Eberl , Thomas Albrecht
Abstract: A photoacoustic gas sensor includes a hermetically sealed housing filled with a reference gas. The photoacoustic gas sensor furthermore includes a microphone arranged in the housing and configured to generate a microphone signal as a function of a sound wave based on light incident in the housing. Furthermore, the photoacoustic gas sensor includes a controllable heat source arranged in the housing and configured to selectively thermoacoustically excite the reference gas in order to generate a thermoacoustic sound wave phase-shifted with respect to the sound wave.
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公开(公告)号：US12203912B2
公开(公告)日：2025-01-21
申请号：US17585723
申请日：2022-01-27
Applicant: Infineon Technologies AG
Inventor： Rainer Markus Schaller , Matthias Eberl , Franz Jost
IPC: H01M50/77 , G01N33/00 , H01M8/0444
Abstract: A gas sensor includes a hollow space, a gas permeation structure which is arranged between the hollow space and the exterior space and contains a selectively gas-permeable element, wherein the hollow space is hermetically sealed with the exception of the gas permeation structure, and one or more sensor elements which are configured for detecting the presence of one or more gases in the hollow space.
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公开(公告)号：US11860272B2
公开(公告)日：2024-01-02
申请号：US18053583
申请日：2022-11-08
Applicant: Infineon Technologies AG
Inventor： Klaus Elian , Christoph Steiner , Horst Theuss , Matthias Eberl , Fabian Merbeler
Abstract: An ultrasonic touch sensor includes: a covering having a contact face configured to receive a touch; a first ultrasonic transducer element; a first semiconductor chip comprising the first ultrasonic transducer element; a second ultrasonic transducer element; and an acoustic barrier formed between the first ultrasonic transducer element and the second ultrasonic transducer element.
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公开(公告)号：US11733213B2
公开(公告)日：2023-08-22
申请号：US17247134
申请日：2020-12-01
Applicant: Infineon Technologies AG
Inventor： Rainer Markus Schaller , Matthias Eberl , Simon Gassner , Franz Jost , Stefan Kolb
CPC classification number: G01N29/2425 , G01N33/0004
Abstract: A photoacoustic detector unit comprises a housing having an opening, and also a photoacoustic transducer designed to convert optical radiation into at least one from a pressure signal or a heat signal. The photoacoustic transducer covers the opening of the housing, such that the photoacoustic transducer and the housing form an acoustically tight cavity. A pressure pick-up is arranged in the acoustically tight cavity.
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Patent Agency Ranking
公开(公告)号：US11635410B2
公开(公告)日：2023-04-25
申请号：US17446507
申请日：2021-08-31
Applicant: Infineon Technologies AG
Inventor： Matthias Eberl , Franz Jost , Stefan Kolb
IPC: G01N29/24 , G01N29/024
Abstract: A gas sensor having a heater, a receiver, and a space arranged between the heater and the receiver, is described, the heater being configured to generate a thermoacoustic sound wave propagating through the space by using a stimulation signal. The receiver is in this case configured to receive the thermoacoustic sound wave that has propagated through the space and to convert it into a reception signal that has a time-of-flight-dependent shift with respect to the stimulation signal and therefore information relating to the gas concentration in the space.
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公开(公告)号：US10900932B2
公开(公告)日：2021-01-26
申请号：US16203859
申请日：2018-11-29
Applicant: Infineon Technologies AG
Inventor： Matthias Eberl , Franz Jost , Stefan Kolb
Abstract: An example of a system comprises a volume filled with a gas, a gas excitation device configured to excite the gas inside the volume, a microphone configured to output a microphone signal on the basis of the gas excited by the gas excitation device, and a testing unit configured to take the microphone signal as a basis for testing a gas-tightness of the volume. An example of a photoacoustic sensor comprises a hermetically sealed sensor cell, a gas excitation device and a testing unit configured to take the microphone signal dependent on the thermally excited gas as a basis for testing a gas-tightness of the sensor cell. One example comprises a method for testing a gas-tightness of a volume filled with a gas.
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公开(公告)号：US12157145B2
公开(公告)日：2024-12-03
申请号：US17865504
申请日：2022-07-15
Applicant: Infineon Technologies AG
Inventor： Klaus Elian , Matthias Eberl , Fabian Merbeler
Abstract: A sensor system for attachment to a casing includes at least one sensor element, where the sensor element is configured for detecting an environment property of an environment which, with the sensor system attached to the casing, is situated on the opposite side of the casing with respect to the sensor system. The sensor system also includes an encapsulation layer, where the sensor element is embedded in the encapsulation layer, and where the encapsulation layer has a contact surface for attaching the sensor system to the casing.
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公开(公告)号：US12122194B2
公开(公告)日：2024-10-22
申请号：US17335478
申请日：2021-06-01
Applicant: Infineon Technologies AG
Inventor： Thomas Engl , Matthias Eberl , Manfred Eder , Michael Kandler , Maximilian Werner
CPC classification number: B60C23/0433 , B60C23/0415 , G01S3/48 , H04B7/0602 , H04B7/0802 , H04W76/14
Abstract: A method of communicating with a tire pressure monitoring system (TPMS) sensor module includes transmitting, by the TPMS sensor module, a TPMS signal that includes a sensor identifier of the TPMS sensor module; performing, by an interface device, an angle of arrival measurement on the TPMS signal to whether an angular direction thereof with respect to an antenna array of the interface device is within a predetermined angular window; and determining, by the interface device, whether or not to communicate with the TPMS sensor module including establishing communication with the TPMS sensor module on a condition that the angular direction is within the predetermined angular window and not establishing communication with the TPMS sensor module on a condition that the determined angular direction is not within the predetermined angular window.
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公开(公告)号：US12078615B2
公开(公告)日：2024-09-03
申请号：US18322755
申请日：2023-05-24
Applicant: Infineon Technologies AG
Inventor： Rainer Markus Schaller , Matthias Eberl , Simon Gassner , Franz Jost , Stefan Kolb
CPC classification number: G01N29/2425 , G01N33/0004
Abstract: A photoacoustic detector unit comprises a housing having an opening, and also a photoacoustic transducer designed to convert optical radiation into at least one from a pressure signal or a heat signal. The photoacoustic transducer covers the opening of the housing, such that the photoacoustic transducer and the housing form an acoustically tight cavity. A pressure pick-up is arranged in the acoustically tight cavity.
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