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首页> 外文会议>Annual International Meeting of the American Society of Agricultural and Biological Engineers >Microwave Meter for Rapid, Nondestructive Determination of In-Shell Peanut Kernel Moisture Content from Dielectric Measurements on Cleaned andUncleaned Pod Samples
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Microwave Meter for Rapid, Nondestructive Determination of In-Shell Peanut Kernel Moisture Content from Dielectric Measurements on Cleaned andUncleaned Pod Samples

机译：微波仪表，用于快速，非破坏性测定壳体花生核水分含量从介电测量清洁和吞咽荚样本

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摘要

A microwave moisture meter built with off-the-shelf components was developed, calibrated and tested in the laboratory and in the field for nondestructive and instantaneous in-shell peanut kernel moisture content determination from dielectric measurements on cleaned and uncleaned pod samples. The meter operates at a single frequency of 5.8 GHz and uses free-space transmission measurement principles for determining the dielectric properties of the peanut pods. From these properties, a permittivity-based algorithm provides the bulk density and moisture content of the pods, and the kernel moisture content. Field tests showed that moisture content of peanut kernels can be determined while still in the pod with a standard error of performance (SEP) of 0.82% moisture content for dielectric measurements on cleaned pods and an SEP of 0.86% moisture content for uncleaned pods compared to the official meter. When compared to the oven-drying standard method, values of the SEP were 0.51% for the official meterand 0.31% for the microwave meter.
机译：在实验室中开发，校准并测试了一种微波水分仪，在实验室中进行校准和测试，用于非破坏性和瞬时内壳花生核含水量测定，从介电测量上进行清洁和未切割的荚样本。仪表以5.8GHz的单个频率运行，并使用自由空间传输测量原理来确定花生荚的电介质特性。从这些性质，基于介电常数的算法提供了荚的堆积密度和水分含量和核水分含量。现场试验表明，可以确定花生核的水分含量，同时仍然在介质中的性能（SEP）的标准误差为0.82％的水分含量，用于清洁豆荚上的介电测量和未切割的豆荚的0.86％的水分含量为0.86％。官方仪表。与烘箱干燥标准方法相比，SEP的值为微波仪表的官方仪表数为0.51％。

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