POSITION SENSOR FOR A TIMEPIECE SETTING STEM
    1.
    发明公开
    POSITION SENSOR FOR A TIMEPIECE SETTING STEM 审中-公开
    时钟设置STEM的位置传感器

    公开(公告)号:EP3204828A2

    公开(公告)日:2017-08-16

    申请号:EP15777894.5

    申请日:2015-09-23

    IPC分类号: G04C3/00 G01D5/241 H03K17/975

    摘要: A capacitive sensor is described for determining the instantaneous angular position of a rotatable element (3) in a timepiece, such as the setting stem of a wristwatch. Static electrodes (11, 12, 13, 21, 22, 23) are arranged to form, in conjunction with rotor electrodes (5a, 5b) of the rotatable element (3), a first differential capacitance pair (1) and a second differential capacitance pair (2). A sensor calculation unit is configured to sense difference values from the differential capacitances pairs (1, 2) and to evaluate the angular position of the rotatable element (3) from the difference values using predetermined information relating the differential capacitance values to angular position values.

    摘要翻译: 描述了一种电容式传感器,用于确定钟表中的可旋转元件(3)的瞬时角度位置,例如手表的设定柄。 静电电极(11,12,13,21,22,23)被布置成与可旋转元件(3)的转子电极(5a,5b)一起形成第一差分电容对(1)和第二差分电容 电容对(2)。 传感器计算单元被配置为感测来自差分电容对(1,2)的差值并且使用将差分电容值与角位置值相关的预定信息从差值评估可旋转元件(3)的角位置。