公开(公告)号：US20230213547A1

公开(公告)日：2023-07-06

申请号：US18181755

申请日：2023-03-10

Applicant: Infineon Technologies AG

Inventor： Simone FONTANESI ,  Filippo GRILLOTTI ,  Alessandro PETRI ,  Massimiliano ZILLI

IPC: G01P3/44 ,  G01P21/00 ,  G01B21/22

CPC classification number: G01P3/44 ,  G01P21/00 ,  G01B21/22

Abstract: A control circuit for a wheel speed sensor is provide. The control circuit includes an input interface configured to receive high-resolution wheel speed data and low-resolution wheel speed data; and circuitry configured to determine information on a functional state of the wheel speed sensor using the high-resolution data and the low-resolution data. The circuitry is configured to detect a failure state of the wheel speed sensor if a number of signal events which are signaled by the high-resolution wheel speed data between a first signal event and a second signal event deviates from an expected number. The first signal event and the second signal event are signaled by the low-resolution wheel speed data.

公开(公告)号：US20210096002A1

公开(公告)日：2021-04-01

申请号：US17030812

申请日：2020-09-24

Applicant: Infineon Technologies AG

Inventor： Alessandro PETRI ,  Simone FONTANESI ,  Filippo GRILLOTTI ,  Andrea POSSEMATO ,  Massimiliano ZILLI

IPC: G01D5/244 ,  G01D5/248

Abstract: A periodic sensor signal representing a varying rotation angle detected by a rotation angle sensor is compared to a number of thresholds to detect threshold crossings of the periodic sensor signal. An output signal including a pulse pattern at the time of a threshold crossing may be generated only if the direction of rotation has not changed since an immediately preceding threshold crossing. A number of consecutive threshold crossings which take place without a change in the direction of rotation may be counted and an update of the offset register is performed only if the number of consecutive threshold crossings which take place without a change in the direction of rotation is equal to or higher less than the number of thresholds.

公开(公告)号：US20210356489A1

公开(公告)日：2021-11-18

申请号：US17314216

申请日：2021-05-07

Applicant: Infineon Technologies AG

Inventor： Simone FONTANESI ,  Filippo GRILLOTTI ,  Alessandro PETRI ,  Massimiliano ZILLI

IPC: G01P3/44 ,  G01B21/22 ,  G01P21/00

Abstract: A control circuit is provided for a sensor that determines a sensed property. The control circuit includes an input interface configured to receive high-resolution data and low-resolution data for the sensed property. The control circuit further includes circuitry configured to determine information on a functional state of the sensor using the high-resolution data and the low-resolution data.