Patent ID: 11932062
Assignee: PIXART IMAGING INC.
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 2:
3. A tire surface managing system, applied to a vehicle comprising a tire, comprising:
a light source, configured to emit light to a groove on a surface of the tire;
a light sensor, configured to receive first reflected detecting light from the surface and second reflected detecting light from a bottom of the groove via the light sensor;
a calculating unit, configured to calculate a groove depth of the groove according to the first reflected detecting light and the second reflected detecting light; and
a control unit, configured to perform following steps:
calculating a relation between a moving distance of the vehicle and the groove depth;
estimating a moving distance threshold according to the relation and the groove depth; and
generating a reminding message if a difference between a current moving distance of the vehicle and the moving distance threshold is lower than a predetermined value.