Patent ID: 11885669
Assignee: PROPHESEE
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 0:
1. A system for detecting vibrations, comprising:
a sensor comprising a plurality of pixels, each pixel including at least one photosensitive element, the sensor being configured to output signals related to illumination on each pixel; and
at least one processor configured to:
receive the output signals from the sensor;
determine, based on the output signals, one or more changes in the illumination, the one or more changes comprising polarity information, the polarity information being indicative of whether the one or more changes in the illumination are associated with increasing or decreasing the illumination;
determine timestamps associated with the one or more changes;
analyze the timestamps and the polarity information to detect vibrations of an object in a field of view of the sensor by calculating time intervals between changes of the polarities using the timestamps; and
determine one or more frequencies of the detected vibrations based on the calculated time intervals.