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    METHOD AND DEVICE FOR HIGHLY ACCURATE, HIGH SPEED, REAL TIME, CONTINUOUS OR STATIONARY, IN-LINE, NON-INVASIVE, THREE DIMENSIONAL, MULTI-SLICE AND CALCULATIONS OF HOMOGENEOUS OR NON-HOMOGENEOUS FIBROUS YARN, SLIVERS, OR PAD MATERIAL
    1.
    发明授权
    METHOD AND DEVICE FOR HIGHLY ACCURATE, HIGH SPEED, REAL TIME, CONTINUOUS OR STATIONARY, IN-LINE, NON-INVASIVE, THREE DIMENSIONAL, MULTI-SLICE AND CALCULATIONS OF HOMOGENEOUS OR NON-HOMOGENEOUS FIBROUS YARN, SLIVERS, OR PAD MATERIAL 失效
    用于高精度，高速，实时，连续或静态，在线，非侵入，三维，均匀和非均质纤维纱，缝合或垫料的多尺度和计算方法和装置

    公开(公告)号：US06476619B1

    公开(公告)日：2002-11-05

    申请号：US09640973

    申请日：2000-08-17

    申请人： Danny S. Moshe ,  Alexander Greenwald ,  Leonid M. Buzik

    发明人： Danny S. Moshe ,  Alexander Greenwald ,  Leonid M. Buzik

    IPC分类号： G01R2732

    CPC分类号： G01N33/362 ,  G01N22/00

    摘要： A method for highly accurate, high speed, multi-slice density and moisture content measurements and calculations of homogeneous or non-homogeneous fibrous material, using a microwave resonator device and computer algorithms. The device is comprised of a cylindrical microwave resonator, including two cutoff waveguides, internal corrective pieces, a teflon tube, signal input and output ports, alternative microwave sources, alternative signal receivers, temperature sensor and optional moisture sensor, and computerized processing and display units. The method comprises passing fibrous material, located in-line of a production process, through the resonator, wherein the fibrous material is scanned with a sweeping range of microwave frequencies, in a continuous, real time, and multi-slice mode. The presence of the fibrous material causes resonance frequency shifts and changes in resonator quality, which are proportional to, and used in calculations of, material density and moisture content, respectively. Calculations of material density (and moisture content) are based on evaluation of density and moisture content arrays (of time samples), which are functions of resonator frequency shift and quality data, empirically determined density, moisture content, and structurally dependent correlation functions, and material temperature. Improved accuracy in values of density is obtained by compensating for moisture content. Density and moisture content values are used for real time quality control feedback of process parameters, including fiber density, moisture content, temperature, and incoming feed rate.

    摘要翻译： 使用微波谐振器装置和计算机算法的高精度，高速度，多切片密度和含水量测量以及均匀或非均质纤维材料的计算的方法。 该器件包括圆柱形微波谐振器，包括两个截止波导，内部校正件，特氟隆管，信号输入和输出端口，替代微波源，替代信号接收器，温度传感器和可选的湿度传感器，以及计算机处理和显示单元 。 该方法包括使生产过程中的线上通过纤维材料通过谐振器，其中以连续的实时和多切片模式以微波频率的扫描范围扫描纤维材料。 纤维材料的存在引起共振频率偏移和谐振器质量的变化，它们分别与材料密度和含水量成正比并用于计算。 材料密度（和水分含量）的计算是基于密度和水分含量阵列（时间样本）的评估，其是谐振器频移和质量数据的函数，经验确定的密度，水分含量和结构依赖的相关函数，以及 材料温度。 通过补偿水分含量可以提高密度值的精度。 密度和含水量值用于工艺参数的实时质量控制反馈，包括纤维密度，含水量，温度和进料速率。