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Device for measuring DC component of a periodic measurement signal has calibrating unit for determining DC offset with calibrating source to produce a periodic symmetrical calibrated signal

机译:用于测量周期性测量信号的直流分量的装置具有校准单元,该校准单元利用校准源确定直流偏移,以产生周期性对称的校准信号

摘要

Device measuring DC component of a periodic measured signal (S) over a period (Ts) comprises AD converter (6) for scanning and digitalizing the measured signal (S); a calculator (8) for determining a DC component (11) by summation of starting values of the AD converter; and a calibrating unit (20) for determining a DC offset having a calibrating source (21) to produce a periodic symmetrical calibrated signal over a period (Tc), a DC component of zero and a duration of at least L (where, L = m.Ts = k.Tc; k is a whole number; m 0; and k 0).
机译:在一个周期(Ts)内测量周期性测量信号(S)的DC分量的设备包括AD转换器(6),用于对测量信号(S)进行扫描和数字化;计算器(8),用于通过对AD转换器的起始值求和来确定DC分量(11);用于确定DC偏移的校准单元(20),其具有校准源(21),以在周期(Tc),DC分量为零且持续时间至少为L的情况下产生周期性对称的校准信号。 m.Ts = k.Tc; k是整数; m > 0;并且k > 0)。

著录项

  • 公开/公告号DE19905271A1

    专利类型

  • 公开/公告日2000-08-10

    原文格式PDF

  • 申请/专利权人 ABB RESEARCH LTD. ZUERICH;

    申请/专利号DE1999105271

  • 发明设计人 JOHANSEN ERNST;

    申请日1999-02-09

  • 分类号G01R19/25;H03M1/10;

  • 国家 DE

  • 入库时间 2022-08-22 01:42:20

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