Smart key system using lf antennas of tpms
AssigneeHyundai Motor Company
InventorEun Hee Kim
Life of this patent
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Abstract
The present invention provides a smart key system using Low Frequency (LF) antennas of a Tire Pressure Monitoring System (TPMS), in which a Central Processing Unit (CPU) installed inside a vehicle control locking modules of respective doors to be opened or locked in response to an open/close signal from a smart key configured to transmit/receive a wireless signal unique to the vehicle. A plurality of antennas are installed on the vehicle for receiving a low frequency control signal transmitted from the smart key. One or more of the antennas are the LF antennas used for the TPMS of the vehicle.
Claims5
A smart key system using Low Frequency (LF) antennas of a Tire Pressure Monitoring System (TPMS), in which a Central Processing Unit (CPU) installed inside a vehicle performs control such that locking modules of respective doors are opened or locked in response to an open/close signal from a smart key configured to transmit/receive a wireless signal unique to the vehicle, the smart key system comprising:
- a plurality of antennas installed on the vehicle, and configured to receive a low frequency control signal transmitted from the smart key in a Radio Frequency (RF) signal form;
- and
- a low frequency driver configured to separate a control signal for the locking modules from the RF signal input to the antennas, and apply the control signal to the CPU;
- wherein one or more of the antennas are the LF antennas used for the TPMS of the vehicle.
Dependencies are inferred from the claim text.