PROBLEM TO BE SOLVED: To provide a wireless communication authenticity determination system capable of detecting unauthorized communication of a start signal transmitted before a bidirectional communication is established.SOLUTION: A bidirectional communication is established between a vehicle 1 and an electronic key 2 which starts with a start communication transmitted from the vehicle 1 to the electronic key 2. The electronic key 2 calculates a first received signal strength of a radio wave from the vehicle 1 and the vehicle 1 calculates a second received signal strength of a radio wave from the electronic key 2. A verification ECU 4 of the vehicle 1 determines whether the communication between the vehicle 1 and the electronic key 2 which includes the start communication is a normal communication on the basis of the time variation of the first received signal strength and the time variation of the second received signal strength.SELECTED DRAWING: Figure 1

    【課題】双方向通信の前に送信される始動信号の不正通信を検出することができる無線通信正否判定システムを提供する。【解決手段】車両1から電子キー2へと送信される始動通信を契機として、車両1と電子キー2との間の双方向通信が行われる。電子キー2は、車両1からの電波の第1受信信号強度を算出し、車両1は、電子キー2からの電波の第2受信信号強度を算出する。車両1の照合ECU4は、第1受信信号強度の時間変化および第2受信信号強度の時間変化に基づいて、始動通信を含む車両1と電子キー2との間の通信が正規通信であるか否かを判定する。【選択図】図1


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    Title :

    WIRELESS COMMUNICATION AUTHENTICITY DETERMINATION SYSTEM


    Additional title:

    無線通信正否判定システム


    Contributors:

    Publication date :

    2018-04-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    E05B LOCKS , Schlösser / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR



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