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    • 9. 发明申请
    • METHOD OF COMPENSATING FOR DRIFT IN GAS SENSING EQUIPMENT
    • 在气体传感设备中进行干燥的补偿方法
    • WO2002054086A1
    • 2002-07-11
    • PCT/US2001/050520
    • 2001-12-28
    • EDWARDS SYSTEMS TECHOLOGY, INCORPORATEDNELSON, AudreyMADDUX, Brian, C.HIGGINS, Don, Q.NISBET, Jean, A.KOUZNETSOV, Adrian
    • KOUZNETSOV, Adrian
    • G01N37/00
    • G01N33/0006G01N21/274G01N21/3504G01N2201/127
    • A method for compensating for baseline or span drift in gas sensing equipment includes obtaining gas concentration data over a time period and identifying a quiescent period within that time period. The method compares a component concentration corresponding to the quiescent period with one or more additional component concentrations relating to different quiescent periods and calculates an estimated background gas concentration for a predetermined number of time periods. The estimated background concentration is then compared to a preset, or expected, background concentration, and a correction value is calculated. For baseline drift, a correction value is determined to be the difference between the estimated background concentration and the preset (expected) background concentration. For span drift, a correction value is determined to be the ratio of the estimated background concentration to the preset (expected) background concentration. Measured concentrations by the gas sensor are then adjusted by the correction value.
    • 用于补偿气体检测设备中的基线或跨度漂移的方法包括在一段时间内获得气体浓度数据,并在该时间段内识别静止期。 该方法将与静止期相对应的成分浓度与与不同静止期相关的一个或多个附加成分浓度进行比较,并计算预定时间段的估计背景气体浓度。 然后将估计的背景浓度与预设的或预期的背景浓度进行比较,并计算校正值。 对于基线漂移,将校正值确定为估计背景浓度与预设(预期)背景浓度之间的差。 对于跨度漂移,校正值被确定为估计背景浓度与预设(预期)背景浓度的比率。 然后通过校正值调整气体传感器的测量浓度。