| 摘要 |
PURPOSE: A batteryless tire pressure sensing system and a control method thereof are provided to be used through the power supply of a non-utility generation without a battery. CONSTITUTION: A batteryless tire pressure sensing system comprises a non-utility generation power supply unit(100), a voltage conversion and charging unit, a TPMS control circuit unit, a sensor unit and an RF transmitting unit. The non-utility generation power supply unit converts the vibration from outside into the electric energy. In order to use the voltage in the TPMS, the voltage conversion and charging unit makes a voltage conversion and charging unit. The TPMS control circuit unit makes proceed the learning, RF transmission and conditional system control of a sensor and other signal information. The sensor unit comprises a pressure sensor and other sensors. The RF transmitting unit transmits the state of the outside tire.
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