To provide a gripping detection circuit, etc., facilitating a detection line interconnecting multiple piezoelectric sensors with a detection circuit to be laid out.SOLUTION: A gripping detection device includes: at least one vibration unit installed on a steering wheel that includes an annular rim and a plurality of spokes connected to the rim; a plurality of piezoelectric sensors installed on the rim; a drive circuit that causes the vibration unit to vibrate so as to transfer the vibration to the rim; a detection line commonly connected to the plurality of piezoelectric sensors, and passing through any one of the plurality of spokes; and a detection circuit that detects, via the detection line, a change in the output signals by the plurality of piezoelectric sensors.SELECTED DRAWING: Figure 1

    【課題】複数の圧電センサと検知回路とを結ぶ検知ラインを容易にレイアウト可能な把持検出回路等を提供すること。【解決手段】環状のリムと前記リムに接続される複数のスポークとが形成されるステアリングホイールに設置される少なくとも一つの振動部と、前記リムに設置される複数の圧電センサと、前記リムに振動が伝播するように前記振動部を振動させる駆動回路と、前記複数の圧電センサに共通に接続され、前記複数のスポークのうちいずれかのスポークを経由する検知ラインと、前記複数の圧電センサの出力信号の変化を前記検知ラインを介して検知する検知回路とを備える、把持検出装置。【選択図】図1


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    Title :

    GRIPPING DETECTION DEVICE AND STEERING WHEEL


    Additional title:

    把持検出装置及びステアリングホイール


    Contributors:

    Publication date :

    2020-03-19


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / H01H Elektrische Schalter , ELECTRIC SWITCHES



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