文档介绍：水稻电阻抗谱分析及检测频率范围的确定
宋琦卢泽民孙卫红魏新华
江苏大学现代农业装备与技术教育部重点实验室江苏大学食品与生物工程学院
X
关注成功!
加关注后您将方便地在我的关注中得到本文献的被引频次变化的通知!
新浪微博
腾讯微博
人人网
开心网
豆瓣网
网易微博
摘    要:
为了确定基于水稻电特性的水稻水分传感器的检测频率范围, 以江苏镇江的镇稻十号为研究对象, 利用solartron阻抗分析仪1260A+1294及自制电阻盒研究频率(1Hz1MHz) 、水稻含水率(12%29%) 对水稻阻抗模的影响。通过研究发现:随着频率的增大, 不同含水率水稻阻抗模逐渐减小, 且阻抗模间距逐渐缩小并产生重合, 其中低含水率水稻在低频段频率增加的过程中会产生一定幅度的波动;含水率对水稻阻抗模的影响具有频段区域特征, 其减小或波动的幅度逐渐减小、趋势具有良好的一致性。通过对水稻阻抗谱的分析, 最终确定水稻含水率的检测频率范围为200Hz2k Hz, 为基于复阻抗测量原理的水稻水分传感器的设计提供了重要的实验依据。
关键词:
水稻电阻抗谱; 含水率; 检测频率;
作者简介:宋琦(1993-) , 男, 河南信阳人, 硕士研究生, (E-mail) sq12369123@。
作者简介:魏新华(1972-) , 男, 山东滨州人, 研究员, 博士, (E-mail) wei_xh@。
收稿日期:2017-01-18
基金:公益性行业(农业) 科研专项(201503130)
Electrical Impedance Spectroscopy Analysis of Rice and Determination of Detection Frequency Range
Song Qi Lu Zemin Sun Weihong Wei Xinhua
Jiangsu University, Key Laboratory of Modern Agricultural Equipment and Technology, Ministry of Education; Jiangsu University, School of Food and Biological Engineering;
Abstract:
In order to determine the detection frequency range of rice moisture sensor based on the electrical characteristics of rice, setting the rice variety Zhendao ten planted in zhenjiang, jiangsu as the research object, using Solartron1260 A + 1294 impedance analyzer and self-made resistor box to study the effect of frequency ( 1Hz ~ 1MHz) and rice water content (12%-29%) to rice impedance. The study found that with the increase of frequency, the impedance of rice with different moisture content gradually decreases and the modulus spacing of impedance gradually reduced until overlap, but the rice with low moisture content would fluctuate with the increase of frequency in the low-frequency influence of water content on rice impedance have different characteristics at different frequency range, but at any frequency range, the amplitude of reduces or fluctuations decreases gradually and the trend is consistent with the increase of frequency. Based on electrical impedance spectroscopy analysis