To provide a fraud sensing method for efficient sensing of a fraudulent message to be transmitted to a bus, in order to, for example, reduce consumption of an in-vehicle battery, in an in-vehicle network system in which communication is established in accordance with a CAN protocol or the like.SOLUTION: A fraud sensing method for use in an in-vehicle network system including a plurality of electronic control units that communicate via buses includes a detection step of detecting that a state of a vehicle satisfies a predetermined condition (a sequence for detection of a fraudulent message S4003), and a switching step of switching, upon detecting that the state of the vehicle satisfies the predetermined condition, an operation mode of a fraud-sensing electronic control unit connected to the buses between a first mode, in which a prescribed type of sensing process for sensing a fraudulent message on the buses is performed, and a second mode, in which the prescribed type of sensing process is not performed (a sequence for instructions to transition to a check mode being a first mode S4005).SELECTED DRAWING: Figure 37
【課題】CANプロトコル等に従って通信する車載ネットワークシステムにおいて、車載バッテリーの消費抑制等のために効率的に、バスに送信される不正なメッセージを検知する不正検知方法を提供する。【解決手段】バスを介して通信する複数の電子制御ユニットを備える車載ネットワークシステムにおいて用いられる不正検知方法は、車両の状態が一定条件を満たしたことを検出する検出ステップ(不正メッセージの検出シーケンスS4003)と、車両の状態が一定条件を満たしたことが検出された場合に、バスに接続された不正検知電子制御ユニットの動作モードを、当該バス上の不正なメッセージを検知する所定種類の検知処理を行う第1モードと当該所定種類の検知処理を行わない第2モードとの間で切り替える切替ステップ(第1モードであるチェックモードへの移行指示シーケンスS4005)とを含む。【選択図】図37
FRAUD SENSING ELECTRONIC CONTROL UNITS AND FRAUD SENSING METHOD
不正検知電子制御ユニット及び不正検知方法
2019-07-04
Patent
Electronic Resource
Japanese
IPC: | H04L TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION , Übertragung digitaler Information, z.B. Telegrafieverkehr / B60R Fahrzeuge, Fahrzeugausstattung oder Fahrzeugteile, soweit nicht anderweitig vorgesehen , VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR |
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