公开(公告)号：US4789820A

公开(公告)日：1988-12-06

申请号：US884642

申请日：1986-07-11

申请人： George B. Parrent, Jr. ,  Glenn W. Zeiders ,  James P. Reilly ,  Antonio Khazen

发明人： George B. Parrent, Jr. ,  Glenn W. Zeiders ,  James P. Reilly ,  Antonio Khazen

IPC分类号： G01N21/31 ,  G01N21/86 ,  G01N22/00 ,  G01N22/04 ,  G01R27/04

CPC分类号： G01N22/00 ,  G01N21/86 ,  G01N22/04 ,  G01N21/314

摘要： A method and apparatus for simultaneously generating spatial profiles of moisture, thickness, and basis weight across a moving web of paper in a paper making machine. The apparatus includes a plurality of means for generating first and second beams of coherent microwave radiation and for generating signals proportional to the intensity of radiation applied to, reflected from, and transmitted through the web. The incident, reflectance, and transmittance signals for the two frequencies are used to solve simultaneous equations to generate moisture, thickness, and basis weight values at various positions across the web.

摘要翻译： 一种用于在造纸机中同时产生移动的纸幅上的湿度，厚度和基重的空间分布的方法和装置。 该装置包括用于产生第一和第二相干微波辐射束并用于产生与施加于其上，从其反射并通过幅材传播的辐射强度成正比的信号的多个装置。 用于两个频率的入射，反射率和透射率信号用于求解联立方程以在网络上的各个位置产生湿度，厚度和基重值。