The embodiment of the invention provides a steering wheel heating and hand-leaving detection system and method, a steering wheel and a vehicle, in the system, a heating pad is arranged in the steering wheel, and the exterior of a steering wheel framework of the steering wheel is sequentially wrapped with a first pad material layer, a heating emission layer, a second pad material layer, a hand-leaving detection sensor layer and an outer wrapping layer of the heating pad; when the main control chip receives a hand-leaving detection instruction, the main control chip controls the current-limiting transmitting branch, the heating pad and the signal receiving branch to form a closed loop so as to realize hand-leaving detection of the steering wheel; when the main control chip receives a steering wheel heating instruction, the main control chip controls the high-side control branch, the heating pad and the low-side control branch to form a closed loop so as to heat the steering wheel. As heating and emission share one layer, a signal carrier material layer and a pad material layer are saved, the thickness of the heating pad is reduced, and the cost is reduced. And the hand-leaving detection and the heating are time-division multiplexing, so that the interference of the heating on the hand-leaving detection can be reduced.

    本发明实施例提供了一种方向盘加热及离手检测系统、方法、方向盘及车辆,该系统中加热垫设置于方向盘中,方向盘的方向盘骨架外依次包裹有加热垫的第一垫子材料层、加热发射层、第二垫子材料层、离手检测传感器层以及外包覆层;当主控芯片接收到离手检测指令时,主控芯片控制限流发射支路、加热垫和信号接收支路形成闭环回路,以实现对方向盘的离手检测;当主控芯片接收到方向盘加热指令时,主控芯片控制高边控制支路、加热垫和低边控制支路形成闭环回路,以实现对方向盘进行加热。由于加热和发射共用一层,所以节省了信号载体材料层和垫子材料层,减少了加热垫的厚度,降低了成本。且离手检测和加热是分时复用,可以减少加热对离手检测的干扰。


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    Title :

    Steering wheel heating and hand leaving detection system and method, steering wheel and vehicle


    Additional title:

    一种方向盘加热及离手检测系统、方法、方向盘及车辆


    Contributors:
    PENG DEAN (author) / CHEN JIANQUAN (author) / LIN JIANSHENG (author) / WANG KANGYUAN (author) / ZANG SHUXING (author) / LI YONG (author) / CHEN RUFEI (author) / ZHU QIANG (author) / REN XINGHUI (author)

    Publication date :

    2024-09-20


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge / H05B ELECTRIC HEATING , Elektrische Heizung



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