CPC G01L 17/00 (2013.01) [B60C 19/00 (2013.01); B60C 23/04 (2013.01); G01L 19/0092 (2013.01); B60C 2019/004 (2013.01)] | 10 Claims |
1. A tire information acquisition device, comprising
a sensor unit substrate on a same plane of which a sensor for acquiring tire information and a power supply unit for supplying electric power to the sensor are disposed;
a heat-insulating material being disposed at at least a periphery of the power supply unit; wherein
the power supply unit comprises an electret that generates electric power by changing a position of an electrode due to a rotational movement or a reciprocating movement.
|