US 12,487,250 B2
Apparatus and method for detecting device drop
Wenjun Jiang, San Jose, CA (US); Tianwei Xing, Santa Clara, CA (US); and Xun Chen, Fremont, CA (US)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on May 26, 2023, as Appl. No. 18/202,796.
Claims priority of provisional application 63/430,860, filed on Dec. 7, 2022.
Prior Publication US 2024/0192249 A1, Jun. 13, 2024
Int. Cl. G01P 15/18 (2013.01); G01P 3/44 (2006.01); G01P 15/08 (2006.01)
CPC G01P 15/18 (2013.01) [G01P 3/44 (2013.01); G01P 15/0891 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method for detecting a drop event of an electronic device, the method comprising:
obtaining an angular velocity and a proper acceleration of the electronic device based on sensor data received from an inertial measurement unit (IMU) sensor of the electronic device;
obtaining a centripetal acceleration of the electronic device by computing a transition matrix having respective vectors of the angular velocity, principal moments of inertia of the electronic device, and a position of the IMU sensor within the electronic device, as inputs to the transition matrix;
based on an acceleration difference between the centripetal acceleration and the proper acceleration, determining whether the electronic device is in a fall state; and
based on the electronic device being determined to be in the fall state, providing an analysis result of the drop event.