公开(公告)号：US20180172721A1

公开(公告)日：2018-06-21

申请号：US15442454

申请日：2017-02-24

Applicant: BlackBerry Limited

Inventor： Dake He ,  Alexander Levato ,  Yu Gao

IPC: G01P15/02 ,  G01C19/00 ,  B65D90/48

Abstract: In some examples, a method determines an open/close status of a pivotable barrier on a moveable platform based on selective use of a plurality of different filters for filtering measurement data from a sensor device.

公开(公告)号：US10663479B2

公开(公告)日：2020-05-26

申请号：US15442454

申请日：2017-02-24

Applicant: BlackBerry Limited

Inventor： Dake He ,  Alexander Levato ,  Yu Gao

IPC: G01P15/02 ,  G01C21/10 ,  H03H17/04 ,  G01C19/00

Abstract: In some examples, a method determines an open/close status of a pivotable barrier on a moveable platform based on selective use of a plurality of different filters for filtering measurement data from a sensor device.

公开(公告)号：US11041877B2

公开(公告)日：2021-06-22

申请号：US15442457

申请日：2017-02-24

Applicant: BlackBerry Limited

Inventor： Dake He ,  Alexander Levato ,  Yu Gao

IPC: G01P15/02 ,  G01C21/10 ,  H03H17/04 ,  G01C19/00

Abstract: In some examples, to perform motion detection of a moveable platform, variance values based on acceleration data from an accelerometer on the moveable platform are computed. Using the computed variance values, it is determined whether the moveable platform is in motion.

公开(公告)号：US20180172722A1

公开(公告)日：2018-06-21

申请号：US15442457

申请日：2017-02-24

Applicant: BlackBerry Limited

Inventor： Dake He ,  Alexander Levato ,  Yu Gao

IPC: G01P15/02 ,  B65D19/44 ,  B65D90/48 ,  H03H17/04 ,  G06F17/11

CPC classification number: G01P15/02 ,  G01C19/00 ,  G01C21/10 ,  H03H17/04

Abstract: In some examples, to perform motion detection of a moveable platform, variance values based on acceleration data from an accelerometer on the moveable platform are computed. Using the computed variance values, it is determined whether the moveable platform is in motion.