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    • 10. 发明授权
    • Estimating fluidic properties and using them to improve the precision/accuracy of metered fluids and to improve the sensitivity/specificity in detecting failure modes
    • 估计流体性质并使用它们来提高计量流体的精确度和精度,并提高检测失效模式的灵敏度/特异性
    • US07634367B1
    • 2009-12-15
    • US11484115
    • 2006-07-11
    • Zhong DingMark SawczukScott Stearns
    • Zhong DingMark SawczukScott Stearns
    • G01F11/00G06F19/00G01F22/00G01F22/02G01F25/00
    • G01F22/00
    • A method for improving the accuracy or precision of a metered fluid includes: estimating a fluidic property of the fluid being metered; and adjusting one or more control parameters based on the estimated property to improve the accuracy or precision of a metered fluid. Preferably, the estimating the property of the fluid being metered includes: monitoring a physical event during the metering operation to collect sensed data; extracting features from the sensed data; and using the features to estimate fluid properties. In another preferred embodiment, the estimated fluidic property is viscosity and the sensed data is a pressure profile during a fluid aspiration. In another preferred embodiment, the method includes a diagnostic analyzer which includes a metering probe having a hard probe or a probe having a disposable tip and wherein the fluid is a body fluid sample. Another method includes: estimating a fluidic property of the fluid being metered; and adjusting one or more control parameters or thresholds that determine when an error is flagged based on the estimated property to improve the detection of the failure.
    • 一种用于提高计量流体的精度或精度的方法包括:估计要计量的流体的流体性质; 以及基于估计的性质来调整一个或多个控制参数,以提高计量流体的精度或精度。 优选地,估计要计量的流体的性质包括:在计量操作期间监测物理事件以收集感测数据; 从感测数据中提取特征; 并使用特征来估计流体特性。 在另一个优选实施例中,估计的流体性质是粘度,并且感测数据是在流体抽吸期间的压力分布。 在另一个优选实施例中,该方法包括诊断分析器,其包括具有硬探针的测量探针或具有一次性尖端的探针,并且其中所述流体是体液样品。 另一种方法包括:估计要计量的流体的流体性质; 以及调整一个或多个控制参数或阈值,所述控制参数或阈值基于所估计的属性来确定错误何时被标记,以改善故障的检测。