US 11,946,829 B2
Tire sensor device
Sunjay Dodani, San Francisco, CA (US); and Wing-Hong Andrew Ko, Mountain View, CA (US)
Appl. No. 17/267,757
Filed by REVVO TECHNOLOGIES, INC., San Mateo, CA (US)
PCT Filed Aug. 12, 2019, PCT No. PCT/US2019/046133
§ 371(c)(1), (2) Date Feb. 10, 2021,
PCT Pub. No. WO2020/036859, PCT Pub. Date Feb. 20, 2020.
Claims priority of provisional application 62/717,887, filed on Aug. 12, 2018.
Prior Publication US 2021/0181063 A1, Jun. 17, 2021
Int. Cl. G01M 17/02 (2006.01); B60C 11/24 (2006.01); B60C 23/04 (2006.01); G01L 17/00 (2006.01); G01M 3/00 (2006.01)
CPC G01M 17/02 (2013.01) [B60C 11/246 (2013.01); B60C 23/0479 (2013.01); B60C 23/0488 (2013.01); B60C 23/0493 (2013.01); G01L 17/00 (2013.01); G01M 3/00 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A tire sensor device for monitoring a condition of a tire, the tire sensor device comprising:
a plurality of sensors including a temperature sensor and a three-axis accelerometer having a first predetermined axis, wherein said first predetermined axis of said accelerometer is installed in a direction aligned with a circumference of a tire such that said accelerometer of the tire sensor device is aligned along a known axis with respect to the tire;
memory configured to store data received by the plurality of sensors;
a microprocessor coupled with the memory, the microprocessor configured to perform one or more initial processing operations on the data received by the plurality of sensors, the one or more initial processing operations including determining one or more tire characteristics using data from the plurality of sensors acquired at a frequency greater than a frequency of rotation of the tire; and
an antenna, coupled with the microprocessor, configured to wirelessly communicate with one or more external devices;
wherein the tire sensor device has dimensions less than 5 cm×5 cm×2 cm; and
wherein the one or more initial processing operations include determining, using data from the accelerometer relating to the periodic motion of the tire along an axis of rotation of the tire, and then analyzing motion of the tire as determined by said data from the accelerometer to determine a wheel misalignment.