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KPD (key position detection) authentication method and system for vehicle and smart key and vehicle base station

The invention provides a KPD (key position detection) authentication method and system for a vehicle and a smart key and a vehicle base station. The method comprises the following steps of: sending encrypted and coded identity authentication information to the smart key through low frequency so as to initiate identity authentication and starting a timer; when the time of the timer reaches set time, sending a low-frequency carrier wave to the smart key through low frequency so as to initiate position authentication; receiving authentication results sent by the smart key through high frequency, wherein the authentication results include an identity authentication result obtained in a manner that the smart key decrypts and decodes the identity authentication information and a measurement result obtained through measuring the field intensity of the low-frequency carrier wave; and judging whether the identity and position of the smart key are legal or not according to the identity authentication result and the measurement result, and executing related operations when the identity and position of the smart key are legal. The method, the system and the vehicle base station, provided by the invention, have the advantages that the time for KPD authentication is greatly shortened, the probability that unstable factors appear in a communication process is reduced, and the practicability of PEPS (Passive Entry & Push Start Systems) is enhanced.
Owner:天津经纬恒润科技有限公司
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