US 12,145,409 B2
Method for monitoring motion status of vehicle and related chip, and system
Tao Zhang, Wuhan (CN); and Senlin Li, Wuhan (CN)
Assigned to AUTOCHIPS WUHAN CO., LTD., Wuhan (CN)
Filed by Autochips Wuhan Co., Ltd., Wuhan (CN)
Filed on Aug. 11, 2021, as Appl. No. 17/399,048.
Claims priority of application No. 202110157186.1 (CN), filed on Feb. 4, 2021.
Prior Publication US 2022/0242176 A1, Aug. 4, 2022
Int. Cl. B60C 23/04 (2006.01)
CPC B60C 23/0488 (2013.01) [B60C 23/0433 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for monitoring a motion status of a vehicle, comprising:
obtaining N acceleration values in a first axial direction collected from N times sampling within a preset time period through an accelerometer mounted on a wheel; and obtaining a maximum acceleration change value in the first axial direction based on the N acceleration values in the first axial direction;
obtaining N acceleration values in a second axial direction collected from N times sampling within the preset time period through the accelerometer mounted on the wheel; and obtaining a maximum acceleration change value in the second axial direction based on the N acceleration values in the second axial direction; wherein the first axial direction is perpendicular to the second axial direction;
determining whether the vehicle is in motion or in a first stationary state based on the N acceleration values in the first axial direction and the N acceleration values in the second axial direction; and
in response to the vehicle being determined to be in the first stationary state, further determining whether the vehicle is in motion or in a second stationary state based on the maximum acceleration change value in the first axial direction and the maximum acceleration change value in the second axial direction;
in response to the vehicle being determined to be in the second stationary state, adjusting a tire pressure monitoring system to a sleep mode.