传感技术学报2017，Vol.30Issue(7)：1006-1010,5.DOI:10.3969/j.issn.1004-1699.2017.07.006
基于介电常数温变特性的食用油品质机理研究
Mechanism of Edible Oil Quality Based on Dielectric Constant Temperature Change Characteristics
摘要
Abstract
Edible oil generates many harmful substances in the high-temperature frying process,which affects human health and food safety.According to edible oil temperature change on the influence of the dielectric constant,a capacitive measurement system was designed based on the dielectric constant temperature change characteristics for oil quality testing.In the design of capacitive sensor probe,the equipotential ring technology and driven-cable technology were used to avoid the effect of the fringe field and the generation of parasitic capacitance.In this paper,three kinds of edible oil with different temperature characteristics were tested while they were heated from 32 ℃ to 150 ℃,and the measured data were fitted and analyzed.The results showed that three kinds of edible oils displayed different dielectric properties at different temperatures,which can be utilized to analyze and evaluate the quality of edible oils.关键词
食用油品质/温变特性/介电常数/电容传感器Key words
quality of edible oil/characteristics of temperature change/dielectric constant/capacitive sensor分类
信息技术与安全科学引用本文复制引用
李红民,田兆鹏,郭立杨,牟学成,汪明..基于介电常数温变特性的食用油品质机理研究[J].传感技术学报,2017,30(7):1006-1010,5.基金项目
国家自然科学基金项目(61273326,61573226) （61273326,61573226）
