公开(公告)号：US20240213997A1

公开(公告)日：2024-06-27

申请号：US18146641

申请日：2022-12-27

Applicant: Infineon Technologies AG

Inventor： Dan Ioan Dumitru STOICA ,  Constantin CRISU ,  Constantin STROI ,  Vlad BUICULESCU ,  Matthias BÖHM ,  Alessandro CASPANI ,  Cesare BUFFA ,  Franz Michael DARRER

IPC: H03M1/34 ,  G10L21/0232 ,  H03M1/06

CPC classification number: H03M1/34 ,  G10L21/0232 ,  H03M1/0626

Abstract: A sensor circuit, having a startup phase and an operation phase, includes: a sensor configured to generate a sensor signal based on a measured property, wherein the sensor signal has a frequency spectrum defined by a first frequency and a second frequency that is greater than the first frequency; a signal processing circuit including an analog-to-digital converter (ADC) configured to convert the sensor signal into a digital sensor signal; and an offset diagnosis circuit. The offset diagnosis circuit includes: a low pass filter having a cutoff frequency less than the first frequency and configured to generate a filtered signal based on the digital sensor signal; an offset register configured to store a startup signal value of the filtered signal during the startup phase; and an offset comparator circuit configured to set a threshold range based on the startup signal value for use during the operation phase.

公开(公告)号：US20230102575A1

公开(公告)日：2023-03-30

申请号：US17934057

申请日：2022-09-21

Applicant: Infineon Technologies AG

Inventor： Daniel KÖHLER ,  Vlad BUICULESCU ,  Florian BRANDL ,  Dirk MEINHOLD ,  Erhard LANDGRAF ,  Rainer Markus SCHALLER ,  Markus ECKINGER

IPC: G01L19/00 ,  G01P1/00 ,  G01P15/08 ,  B60L58/10

Abstract: A sensor for parallel measurement of pressure and acceleration of a vehicle, including a substrate, a sensor element disposed on the substrate, a material being connected with the sensor element and being exposed to the environment of the sensor, wherein the material is configured to act as a seismic mass, and an electronic circuitry connected with the sensor element and including a first filter and a second filter, wherein the first and second filters have different filter characteristics so that an output of the first filter is representative for the pressure and an output of the second is representative for the acceleration.