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A platform for research: civil engineering, architecture and urbanism
ON-VEHICLE EQUIPMENT CONTROL SYSTEM, ON-VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE
PROBLEM TO BE SOLVED: To improve crime prevention performance against relay attack without complicating a circuit configuration and signal processing.SOLUTION: An on-vehicle control device 10 comprises an on-vehicle transmitting unit 2 which transmits a first response request signal to a portable machine 20 with a carrier wave of a first frequency α and a second response request signal to the portable machine with a carrier wave of a second frequency β different from the first frequency α, and an on-vehicle receiving unit 3 which receives a response signal from the portable machine 20. The portable machine 20 comprises a portable machine receiving unit 22 which receives the first response request signal and the second response request signal, a reception intensity measuring unit 21a which measures each reception intensity of the first and second response request signals, and a portable machine transmitting unit 23 which transmits a response signal to the on-vehicle control device 10 according to reception of the first and second response request signals. The on-vehicle control device 10 further includes a position determining unit 1a which determines whether the portable machine 20 exists in a prescribed region with respect to the vehicle by comparing the difference between the reception intensities of the first and second response request signals with a prescribed threshold value.SELECTED DRAWING: Figure 1
【課題】回路構成および信号処理を複雑にすることなく、リレーアタックに対する防犯性を向上させる。【解決手段】車載制御装置１０は、携帯機２０に対して、第１周波数αの搬送波で第１応答要求信号を送信し、かつ第１周波数αと異なる第２周波数βの搬送波で第２応答要求信号を送信する車載送信部２と、携帯機２０から応答信号を受信する車載受信部３とを備える。携帯機２０は、第１応答要求信号と第２応答要求信号を受信する携帯機受信部２２と、第１および第２応答要求信号の各受信強度を測定する受信強度測定部２１ａと、第１および第２応答要求信号を受信したことに応じて、車載制御装置１０に対して応答信号を送信する携帯機送信部２３とを備える。さらに、車載制御装置１０は、第１および第２応答要求信号の各受信強度の差と、所定の閾値とを比較することにより、携帯機２０が車両に対して所定領域内にあるか否かを判定する位置判定部１ａを備える。【選択図】図１
ON-VEHICLE EQUIPMENT CONTROL SYSTEM, ON-VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE
PROBLEM TO BE SOLVED: To improve crime prevention performance against relay attack without complicating a circuit configuration and signal processing.SOLUTION: An on-vehicle control device 10 comprises an on-vehicle transmitting unit 2 which transmits a first response request signal to a portable machine 20 with a carrier wave of a first frequency α and a second response request signal to the portable machine with a carrier wave of a second frequency β different from the first frequency α, and an on-vehicle receiving unit 3 which receives a response signal from the portable machine 20. The portable machine 20 comprises a portable machine receiving unit 22 which receives the first response request signal and the second response request signal, a reception intensity measuring unit 21a which measures each reception intensity of the first and second response request signals, and a portable machine transmitting unit 23 which transmits a response signal to the on-vehicle control device 10 according to reception of the first and second response request signals. The on-vehicle control device 10 further includes a position determining unit 1a which determines whether the portable machine 20 exists in a prescribed region with respect to the vehicle by comparing the difference between the reception intensities of the first and second response request signals with a prescribed threshold value.SELECTED DRAWING: Figure 1
【課題】回路構成および信号処理を複雑にすることなく、リレーアタックに対する防犯性を向上させる。【解決手段】車載制御装置１０は、携帯機２０に対して、第１周波数αの搬送波で第１応答要求信号を送信し、かつ第１周波数αと異なる第２周波数βの搬送波で第２応答要求信号を送信する車載送信部２と、携帯機２０から応答信号を受信する車載受信部３とを備える。携帯機２０は、第１応答要求信号と第２応答要求信号を受信する携帯機受信部２２と、第１および第２応答要求信号の各受信強度を測定する受信強度測定部２１ａと、第１および第２応答要求信号を受信したことに応じて、車載制御装置１０に対して応答信号を送信する携帯機送信部２３とを備える。さらに、車載制御装置１０は、第１および第２応答要求信号の各受信強度の差と、所定の閾値とを比較することにより、携帯機２０が車両に対して所定領域内にあるか否かを判定する位置判定部１ａを備える。【選択図】図１
ON-VEHICLE EQUIPMENT CONTROL SYSTEM, ON-VEHICLE CONTROL DEVICE, AND PORTABLE MACHINE
車載機器制御システム、車載制御装置、携帯機
YASUDA YUTAKA (author) / NISHIDAI TETSUO (author) / YOSHIZAWA DAISUKE (author) / TOMITA YOSUKE (author)
2016-12-22
Patent
Electronic Resource
Japanese
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