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    TIME DIFFERENCE MEASURING APPARATUS, DISTANCE MEASURING APPARATUS, AND DISTANCE MEASURING METHOD
    2.
    发明公开
    TIME DIFFERENCE MEASURING APPARATUS, DISTANCE MEASURING APPARATUS, AND DISTANCE MEASURING METHOD 有权
    ZEITDIFFERENZ-MESSVORRICHTUNG，DISTANZMESSVORRICHTUNG UND DISTANZMESSVERFAHREN

    公开(公告)号：EP1895322A1

    公开(公告)日：2008-03-05

    申请号：EP06757252.9

    申请日：2006-06-12

    申请人： Kabushiki Kaisha TOPCON

    发明人： OHISHI, Masahiro, Kabushiki Kaisha Topcon ,  TOKUDA, Yoshikatsu, Kabushiki Kaisha Topcon ,  OHTOMO, Fumio, Kabushiki Kaisha Topcon

    IPC分类号： G01S17/10 ,  G01C3/06 ,  G04F10/06

    CPC分类号： G01S17/10 ,  G01S7/4865 ,  G01S7/487 ,  G04F10/06

    摘要： In measuring a certain time lag between generations of two pulse signals, a time lag measuring device prevents errors in measurement results even with an error in two reference signals for measuring the time lag. The device measures a time lag between a start signal M1 and a stop signal M2 and includes a reference signal generating section 41 generating two reference signals S1, S2 having a phase difference π /2 , and an amplitude detecting section 42 detects amplitudes A11, A12 and A21, A22 of the reference signals S1, S2 at generation timings for the start signal M1 and the stop signal M2, a phase difference detecting section 43 calculating a phase θ of the reference signals S according to each set of the amplitudes (A11, A12) and (A21, A22), and a correcting section 46 correcting the calculated phase using correction data for error correction in the reference signals S1, S2.

    摘要翻译： 在测量两个脉冲信号的代之间的一定时间滞后时，即使在两个参考信号中用于测量时间滞后的误差，时滞测量装置也可以防止测量结果中的错误。 该装置测量起始信号M1和停止信号M2之间的时间滞后，并且包括产生具有相位差±2的两个参考信号S1，S2的参考信号产生部分41，振幅检测部分42检测振幅A11，A12 以及在起始信号M1和停止信号M2的产生定时的参考信号S1，S2的A21，A22，相位差检测部分43，根据各组幅度（A11，...）计算参考信号S的相位¸， A12）和（A21，A22）以及校正部46，使用校正数据对参考信号S1，S2进行纠错校正。