Patent ID: 8670898

Claim:
A vehicular tire pressure device receiving from at least one sensor of a tire pressure monitoring system high frequency signals, comprising: a power unit for supplying power to the tire pressure device independently through a battery or a power-getting interface from a car; a control chip, which, when determining that the power unit supplies power by the battery, reads out from the high frequency signals information regarding correlation between a sensor and corresponding ID feature code and then stores the information under the control of an user manipulation; and when determining that the power unit supplies the power by the power-getting interface, reads out from the from the high frequency signals tire pressure data and ID feature code, and then outputs the ID of a corresponding sensor and corresponding tire pressure data based on the correlation; a low frequency wake-up unit powered only by the power unit, said low frequency wake-up unit sending inducing signals of low frequency under the control of the control chip, when in the signal match device working state so that the inducing signals are sensed by the sensor and then the high frequency signals are transmitted by the sensor; a high frequency transceiver unit for receiving said high frequency signals under the control of the control chip; and an I/O device for providing a man-machine interaction operation interface so as to receive user's operation and providing warning information.