Electric motor monitoring system
    14.
    发明申请
    Electric motor monitoring system 审中-公开
    电动机监控系统

    公开(公告)号:US20050104616A1

    公开(公告)日:2005-05-19

    申请号:US10501377

    申请日:2003-01-13

    CPC classification number: G01R31/343 G01R31/1227

    Abstract: An electric motor monitoring system is described that comprises an antenna, a data sampling means and a data processing means. The system employs the antenna to detect high frequency arcing events within the electric motor that can thereafter be mapped so as to provide a means for motoring, recording and diagnosing a variety of electric motor operating and fault conditions. The antenna design allows for the suppression of background electrical noise so improving the signal to noise ratio of the detected signals. The same system also provides a facility for optimising the alignment, and monitoring the efficiency of, the electrical and mechanical components of the electric motor.

    Abstract translation: 描述了一种电动机监视系统,其包括天线,数据采样装置和数据处理装置。 该系统采用天线来检测电动机内的高频电弧事件,然后可以映射,以便提供用于电动,记录和诊断各种电动机操作和故障状况的装置。 天线设计允许抑制背景电噪声,从而提高检测信号的信噪比。 相同的系统还提供了用于优化对准的监控和监视电动机的电气和机械部件的效率的设施。

    Dual path analog-to-digital conversion method and system

    公开(公告)号:US06778125B1

    公开(公告)日:2004-08-17

    申请号:US10718066

    申请日:2003-11-20

    CPC classification number: H03M1/0626 H03M1/0617 H03M1/1245 H03M1/14

    Abstract: A dual path analog-to-digital conversion method and system. The system includes a first and second circuits. The first and second circuits each convert an input analog signal into digital signals at differing sample rates. The circuit having the slower sampling rate aliases frequency components of the input analog signal that are higher than half that sampling rate. Frequency components causing the aliasing in the slower sampling circuit are replicated from the faster sampling circuit at the appropriate amplitude, folded into the aliased frequency, and subtracted from the output of the slower sampling circuit. The outputs of both sampling circuits are then merged. These techniques extend the bandwidth of the slower conversion system without degrading the low-frequency accuracy of the slower conversion system.

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