| 摘要 |
An auto learning method of TPMS using a velocity pattern is provided to alarm a user about low pressure of a tire by performing auto learning in case a sensor is replaced to reduce auto learning time. An auto learning method of TPMS using a velocity pattern comprises: a step(S702) receiving a sensor signal from a receiver at one time in case a vehicle is driven over fixed speed; a step(S704) receiving the sensor signal sent from the sensor again; a step(S712) registering ID the sensor which is performed auto learning or discarding the ID of the sensor which is not performed auto learning; a step(S714) acquiring the acceleration information included in the sensor signal; a step(S716) calculating the change amount of the tire spinning speed through the acceleration information; a step(S718) acquiring the car speed information from a vehicle speed sensor; a step(S720) calculating the change amount of the vehicle speed through the speed information; a step(S726) determining whether the change amount of the vehicle speed is within error range or not in case the direction of increase or reduction is equal; and a step(S732) discarding the sensor ID in case the change amount of the vehicle speed is over error range.
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