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    • 2. 发明申请
    • SENSOR SYSTEM AND METHOD FOR DETERMINING PAPER SHEET QUALITY PARAMETERS
    • 传感器系统和确定纸张质量参数的方法
    • US20140277674A1
    • 2014-09-18
    • US14218603
    • 2014-03-18
    • ABB RESEARCH LTD
    • Jacobus Lodevicus Martinus VAN MECHELENHannes Merbold
    • G05B19/418
    • A non-contact sensor system and method are disclosed for determining paper sheet quality parameters such as caliper, basis weight and sheet moisture based on THz radiation. The method can include emitting, by an emitter system, a THz radiation signal towards paper sheet material such that the THz radiation interacts with the paper sheet material; detecting, by a detector system, a time and/or frequency dependent response of the THz radiation signal having interacted with the paper sheet material; determining model parameters of a physical model by optimizing the model parameters such that a predicted response of the physical model is fitted to the detected response, the model parameters being indicative of transmission and/or reflection coefficients at interfaces of the paper sheet material with surrounding media; and determining, from the determined model parameters, at least some of the paper sheet quality parameters.
    • 公开了一种非接触传感器系统和方法,用于基于太赫兹辐射来确定纸张质量参数,例如卡尺,基重和片材湿度。 该方法可以包括通过发射器系统向纸张材料发射THz辐射信号,使得THz辐射与纸张材料相互作用; 通过检测器系统检测已经与纸张材料相互作用的THz辐射信号的时间和/或频率相关响应; 通过优化模型参数来确定物理模型的模型参数,使得物理模型的预测响应适应于检测到的响应,模型参数表示纸张材料与周围介质的界面处的透射和/或反射系数 ; 以及从所确定的模型参数确定所述纸张质量参数的至少一些。