Samsara Inc.

Samsara Networks Inc.

Glen Phillip McGillan

John Charles Bicket

Kevin R Lloyd

Justin Pan

Eric Klaus Allseits

Lucas Glenat

A device orientation calibration system to perform operations that include: accessing inertial measurement unit (IMU) data generated by an IMU mounted upon an object that corresponds with a first reference frame, the IMU data indicating a second reference frame that comprises a Z-axis, a Y-axis, and an X-axis; performing a calibration of the IMU data to align the second reference frame of the IMU with the first reference frame of the object, the performing the calibration comprising: determining a gravitational vector based on a first portion of the IMU data; applying a first rotation to the IMU data to align the Z-axis of the second reference frame with the gravitational vector; determining a forward motion vector based on a second portion of the IMU data; and applying a second rotation to the IMU data to align the X-axis of the second reference frame with the forward motion vector.

Device orientation calibration system

A method performed by an electronic device to monitor one or more wheels of a vehicle. The method includes receiving first accelerometer measurements of a first accelerometer mounted on the vehicle's first wheel when the vehicle is moving during an interval of time, determining based on the first accelerometer measurements a first path followed by the first accelerometer when the vehicle is moving during the interval of time, receiving second accelerometer measurements of a second accelerometer mounted on a vehicle's second wheel when the vehicle is moving during the interval of time, determining, based on the second accelerometer measurements, a second path followed by the second accelerometer when the vehicle is moving during the interval of time, and determining based on a comparison of the first path with the second path that at least one of the vehicle's first wheel and the vehicle's second wheel is misaligned.

Methods and systems for tire health monitoring

A method of monitoring one or more wheels of a vehicle is described. The method includes receiving first accelerometer measurements of a first accelerometer mounted on the vehicle's first wheel when the vehicle is moving during an interval of time, determining based on the first accelerometer measurements a first path followed by the first accelerometer when the vehicle is moving during the interval of time, determining based on the first path that the vehicle's first wheel is out of balance with respect to an axle of the vehicle's first wheel, and responsive to determining that the vehicle's first wheel is out of balance, transmitting to a user device a first alert that the vehicle's first wheel is out of balance.

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San Francisco, CA, United States of America

Glen Phillip McGillan