Patent ID: 7518493
Filing Date: 2009-04-14
Classification: B60C,B81B,B81C

Abstract:
1. An integrated tire pressure sensor system, comprising: (a) one or more MEMS-based sensors, including a MEMS-based pressure sensor for sensing a pressure of a tire; (b) a MEMS-oscillator-based wireless signal transmitter for transmitting data generated by said MEMS-based pressure sensor, wherein said MEMS-oscillator-based wireless signal transmitter comprises: (i) a MEMS-oscillator-based resonator for generating a desired output frequency; and (ii) a fractional-N synthesizer to modify said desired output frequency of said MEMS-oscillator-based resonator; and (c) an asynchronous microcontroller; wherein said one or more MEMS-based sensors, said MEMS-oscillator-based wireless signal transmitter and said asynchronous microcontroller are integrated onto one or more chips in one or more packages.