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    • 1. 发明申请
    • CAPACITIVE NUMBER WHEEL ENCODER FOR UTILITY METERS
    • 用于实用程序的电容号码编码器
    • WO1996007080A1
    • 1996-03-07
    • PCT/US1995006079
    • 1995-05-16
    • BADGER METER, INC.
    • BADGER METER, INC.KOCH, Ronald, N.KOCH, Richard, H.THORNBOROUGH, Ray, J.
    • G01D05/24
    • G01D5/24G06M1/27
    • A number wheel assembly (10) for a counter mechanism has a plurality of number wheels (13-18), each number wheel (13-18) having a sleeve (48) around its circumference with a plurality of positions representing successive increments in a count, a substrate (26-31) opposite one surface of the number wheel (13-18), the substrate (26-31) carrying an electrode (42) that is spaced from the number wheel (13-18) to form an air gap for a variable capacitor, and wherein the number wheel (13-18) carries at least one dielectric element (46) that is rotated with the number wheel (13-18) to vary the capacitance of the variable capacitor according to the position of the number wheel (13-18). Circuitry for detecting the capacitance and the position of the number wheels (13-18) is provided on a circuit board (39) that is electrically connected to the number wheels (13-18).
    • 用于计数器机构的数字轮组件(10)具有多个数字轮(13-18),每个数字轮(13-18)具有围绕其圆周的套筒(48),多个位置表示在一个 计数与数字轮(13-18)的一个表面相对的衬底(26-31),承载与数字轮(13-18)间隔开的电极(42)的衬底(26-31)以形成 用于可变电容器的气隙,并且其中所述数字轮(13-18)承载至少一个与所述数字轮(13-18)一起旋转的介电元件(46),以根据所述位置改变所述可变电容器的电容 的数字轮(13-18)。 用于检测数字轮(13-18)的电容和位置的电路​​设置在电连接到数字轮(13-18)的电路板(39)上。