| 摘要 |
A hub odometer is disclosed, which includes: an eccentric weight rotably supported in a center axis position of an axle hub; a case attached to the axle hub to surround the eccentric weight; a non-contact measuring mechanism disposed to measure the number of revolutions in a relative relation to the case and the eccentric weight; and a transponder including a memory for storing measuring data of the measuring mechanism, a transmitting circuit for transmitting the data stored in the memory, and a receiver for receiving an interrogation wave from a remote unit, the transmitting circuit being actuated on the basis of the interrogation wave.
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