The invention relates to a steering wheel hand-leaving detection circuit and method, a controller and a steering wheel, the steering wheel hand-leaving detection circuit comprises a switching unit, a metal wire, a capacitance detection unit and the controller, switching to pressing is connected with the metal wire and the controller, and a load capacitor is connected with the metal wire and the capacitance detection unit. And the capacitance detection unit is also connected with the first acquisition end of the controller. After the metal wire is heated, residual voltage exists on the metal wire and interferes with follow-up hand-leaving detection, and therefore before hand-leaving detection, the switching unit is controlled to be in the first state to control the metal wire to discharge and eliminate the residual voltage, interference of the residual voltage on hand-leaving detection is eliminated, and the accuracy of hand-leaving detection is improved.

    本申请涉及一种方向盘离手检测电路、方法、控制器以及方向盘,其包括切换单元、金属丝、电容检测单元以及控制器,其中,切换到按压分别与金属丝以及控制器连接,负载电容分别与金属丝以及电容检测单元连接,电容检测单元还与控制器的第一采集端连接。当金属丝被加热之后,金属丝上会有残留电压,会对后续的离手检测产生干扰,因此,本申请实施例在离手检测之前,控制切换单元处于第一状态,以控制金属丝放电,消除残留电压,从而消除残留电压对离手检测的干扰,提高离手检测的准确性。


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    Title :

    Steering wheel hand-leaving detection circuit and method, controller and steering wheel


    Additional title:

    方向盘离手检测电路、方法、控制器以及方向盘


    Contributors:
    YU CHUANPING (author) / YU HANG (author) / WANG YANFENG (author)

    Publication date :

    2024-09-24


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B60W CONJOINT CONTROL OF VEHICLE SUB-UNITS OF DIFFERENT TYPE OR DIFFERENT FUNCTION , Gemeinsame Steuerung oder Regelung von Fahrzeug-Unteraggregaten verschiedenen Typs oder verschiedener Funktion



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