Measurement of Moisture Content in Cardboard Bales by Microwave

被引：4

作者：

Baradit, Erik ^{[1
]}

Aguilera, Cristhian ^{[2
]}

Ibanez, Gerardo ^{[2
]}

Cuevas, Alejandra ^{[2
]}

Yanez, Miguel ^{[3
]}

机构：

[1] Univ Bio Bio, Sci Fac, Phys Dept, Concepcion 4081112, Chile

[2] Univ Bio Bio, Engn Fac, Elect & Elect Engn Dept, Concepcion 4081112, Chile

[3] Univ Bio Bio, Sci Fac, Stat Dept, Concepcion 4081112, Chile

来源：

JOURNAL OF NONDESTRUCTIVE EVALUATION | 2018年 / 37卷 / 04期

关键词：

Diode array; Moisture content; Microwaves; Cardboard bale; Processing;

D O I：

10.1007/s10921-018-0532-y

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

In this work, a system for measuring moisture content in bundles of recycled cardboard sheets using microwaves is proposed and evaluated. For the development of this system, a microwave generator and an antenna tuned in the X-band were used. The detector system used was formed by a diode array point of contact. Calibration curves of moisture content in bales versus voltage in the array were obtained for two orientations or positions of the cardboard sheets in the sample bales. The results showed that the higher the moisture content, the lower the voltage is induced in the diodes. It was also observed that the attenuation of the microwave signal depends on the position of the cardboard sheets and that the measurement can be made in samples of bales with a maximum of 35% humidity, because on this percentage, the variation of voltage in the diode array is almost zero.

引用

页数：5

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