公开(公告)号：US20230299438A1

公开(公告)日：2023-09-21

申请号：US17697143

申请日：2022-03-17

Applicant: Infineon Technologies AG

Inventor： Dan-Alexandru MOCANU ,  Bogdan BUMBACEA ,  Ilie-Ionut CRISTEA ,  Radu MIHAESCU

IPC: H01M50/578 ,  G01R31/396

CPC classification number: H01M50/578 ,  G01R31/396 ,  G06F13/4282

Abstract: A sensor device includes a pressure sensor configured to measure an internal air pressure and generate a sensor signal representative of the measured internal air pressure; a serial peripheral interface (SPI) configured to receive SPI commands; a wake-up terminal configured to output fault signals; and a processing circuit. The processing circuit is configurable between a normal running mode and a low power monitoring (LPM) mode. In LPM mode, the processing circuit is configured to alternate between a sampling phase during which the processing circuit evaluates the sensor signal and a powered-down phase during which the processing circuit is in a low power state. The processing circuit is configured to monitor for at least one SPI communication fault corresponding to information received on the SPI, generate a communication fault signal in response to detecting the at least one SPI communication fault, and output the communication fault signal from the wake-up terminal.

公开(公告)号：US20230314258A1

公开(公告)日：2023-10-05

申请号：US17709934

申请日：2022-03-31

Applicant: Infineon Technologies AG

Inventor： Radu MIHAESCU ,  Dan-Alexandru MOCANU ,  Ilie-Ionut CRISTEA

IPC: G01L27/00 ,  B60C23/04

CPC classification number: G01L27/007 ,  B60C23/04

Abstract: A pressure sensor module includes a pressure sensor configured to periodically measure an internal air pressure within an enclosure and generate a sensor signal having plurality of sensor values; a signal processing chain for conditioning the sensor signal to generate a plurality of conditioned sensor values; a memory configured to store each of the plurality of conditioned sensor values; and a processing circuit coupled to the pressure sensor via the signal processing chain for receiving a current conditioned sensor value and coupled to the memory for receiving a previous conditioned sensor value. The processing circuit is configured monitor for a fault, including calculating a delta pressure value between the current and previous conditioned sensor values, comparing the delta pressure value to a pressure threshold value, and triggering a diagnostic of the signal processing chain if the delta pressure value is greater than the pressure threshold value.