Provided is an automobile steering wheel turning angle indicating device in an angle indication field. The automobile steering wheel turning angle indicating device aims to realize indication of the rotation angle of the automobile steering wheel. The angle indicating function is achieved on the basis of an angle encoder, a direction distinguishing circuit, a single-chip microcomputer (including codes), a nixie tube and a LED lamp. The method comprises the following steps of: 1, identifying directions of A and B paths of signals of which the phase difference of an angle encoder is 90 degrees through a direction identification circuit to obtain left and right steering pulses; 2, performing subtraction and addition counting on the received left and right steering pulses by the single-chip microcomputer, and determining whether the steering wheel is in left steering or right steering according to positive and negative counting values; 3, multiplying the total pulse count by the rotation angle of each pulse of the angle encoder to obtain the rotation angle of the steering wheel; and 4, displaying the angle on a nixie tube according to the angle data obtained by the single chip microcomputer. Meanwhile, the left turning direction and the right turning direction are indicated through 14 red LED lamps and 14 green LED lamps respectively. The number of the lightened LED lamps is dynamically increased or decreased according to the angle, and the increasing or decreasing direction is consistent with the steering wheel rotation angle increasing or decreasing direction.

    一种汽车方向盘转角指示装置。角度指示领域。本发明是为了实现汽车方向盘转动角度的指示。本发明以角度编码器、辨向电路、单片机(含代码)、数码管及LED灯为基础实现角度指示功能。步骤如下1.角度编码器相位差为90°的A、B两路信号,经辨向电路辨向后得出左、右转向脉冲。2.单片机接收到左、右转向脉冲分别作减、加计数,根据计数值的正负确定方向盘是左转向还是右转向。3.脉冲总计数乘以角度编码器每个脉冲的转角,得到方向盘转动角度。4.根据单片机得到的角度数据,将角度显示于数码管。同时左、右转向分别以14个红色LED灯、14个绿色LED灯指示。LED灯点亮个数根据角度大小动态增减,增减方向同方向盘转动角度增减方向一致。


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    Title :

    Automobile steering wheel turning angle indicating device


    Additional title:

    一种汽车方向盘转角指示装置


    Contributors:

    Publication date :

    2021-11-12


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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