Signal processing method and displacement information measuring device
    6.
    发明公开
    Signal processing method and displacement information measuring device 失效
    Signalverarbeitungsverfahren undVerschiebungsinformationsmessgerät。

    公开(公告)号:EP0591832A1

    公开(公告)日:1994-04-13

    申请号:EP93115725.9

    申请日:1993-09-29

    IPC分类号: G01D5/34 G01D5/36

    CPC分类号: G01D5/36 G01D5/347

    摘要: There are disclosed a signal processing method, and a displacement information measuring apparatus utilizing such method, capable of providing highly reliable binary signals even in the presence of a time-dependent variation in the light emission intensity of the light source, a variation in the emission intensity resulting from a variation in the external temperature, or a variation in the optical transmittance resulting from smear on the optical scales, thereby enabling highly precise detection of the displacement information of the movable member.

    摘要翻译: 公开了一种信号处理方法和利用这种方法的位移信息测量装置,即使在存在光源的发光强度的时间依赖性变化的情况下也能够提供高可靠性的二进制信号,发射的变化 由外部温度的变化引起的强度,或由于光学标尺上的污迹引起的光透射率的变化,从而能够高精度地检测可动件的位移信息。