| 摘要 |
PURPOSE: A tire pneumatics sensing device is provided to directly detect pneumatic state of a tire in a vehicle and to prevent an accident in advance by alerting according to a sensed pneumatic state of the tire. CONSTITUTION: A pneumatics sensing unit comprises a pressure sensor(111) converting into an electric signal by sensing the pneumatic state of a tire; an integrated circuit(112) converting the electric signal into a specific modulation signal; an oscillation circuit(113) composed of condenser(C) and a coil(L) to converting the modulation signal into an oscillation signal; and a receiving apparatus(130) composed of the antenna coil. The receiving apparatus composed of a control pulse circuit(131) converting the oscillation signal into a control signal, and a control device(132) outputting a pulse signal by comparing an established reference signal with a signal output from the control pulse circuit.
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