Device-based systems and methods for detecting screen state and device movement

    公开(公告)号:US11338733B2

    公开(公告)日:2022-05-24

    申请号:US16249164

    申请日:2019-01-16

    摘要: A method for determining usage of a mobile device in a vehicle by a user includes receiving a first value indicating an “off” state of a screen at a first time, operating at least one sensor of the mobile device to obtain first movement measurements, and classifying the first movements as usage movements. The method also includes generating an indication of mobile device usage, receiving a second value indicating an “on” state of the screen at a second time, operating the at least one sensor to obtain second movement measurements, and classifying the second movements as usage movements or non-usage movements. The method further includes maintaining the indication of mobile device usage in response to the second movements being classified as usage movements or changing the indication of mobile device usage to an indication of mobile device non-usage in response to the second movements being classified as non-usage movements.

    SYSTEMS AND METHODS FOR SENSOR-BASED DETECTION AND ALERTING OF HARD BRAKING EVENTS

    公开(公告)号:US20240317136A1

    公开(公告)日:2024-09-26

    申请号:US18737641

    申请日:2024-06-07

    IPC分类号: B60Q9/00 H04W4/02

    CPC分类号: B60Q9/00 H04W4/026 H04W4/027

    摘要: A method includes receiving electronic signals from a computing device disposed in a vehicle during a drive that are indicate motion data measured in a reference frame of the computing device and transforming the motion data to produce acceleration vectors for the vehicle. The method also includes detecting a hard braking event using the acceleration vectors and alerting a driver to the hard braking event in real time. The method also includes detecting a subsequent hard braking event and alerting the driver to the subsequent hard braking event in real time in response to determining that an elapsed time since the first alert is greater than or equal to a predefined period of time, the number of events detected since the first alert is greater than or equal to a predefined number of events, or both.