基于叉指电容传感器的油品电学参数检测系统设计  

Electrical Parameters Detection System Design for Edible Oil Based on Interdigital Sensor

作　　者：彭玉峰[1] 赵丽丽[1] 杨少歌[1] 周军晓[1] 

机构地区：[1]河南师范大学物理与电子工程学院,河南新乡453000

出　　处：《电子器件》2014年第2期287-291,共5页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61077037);河南省重点科技攻关项目(122102310032)

摘　　要：食用油关系人们身体健康,现有技术不能实现快速方便检测。提出以新型叉指电容传感器为基础,基于介电常数测量原理,采用电容数字转换芯片AD7746,利用I2C串口协议和微控制器PIC18F452单片机进行通信,实现电容数据的采集和处理,构成一个快捷实时食用油检测系统。首先对常见的食用油进行测量,再依次加地沟油进行测量,最后对不同煎炸时间的食用油测量其中电容变化,得出实验数据。结果发现煎炸时间越长,油中极化分子越多,对健康影响越大。Edible oil quality is related to people healthy,existing technology can＇t realize the convenient and fast detection. This paper studied on the basis of the interdigital capacitance sensor,based on the dielectric constant measurement principle,useing capacitance AD7746 digital conversion chip which utilizes I2C serial interface protocol and communicates with micro controller PIC18F452 single chip,achieves capacitance data acquisition and processing,forms a shortcut edible oil detection system in real time. First of all,to measure common cooking oil,then this experiment measure illegal oil in turn. Finally,by having measured the capacitance change of cooking oil with different frying time,we＇ve achieved the rapid detection of different quality cooking oil. The results found that the longer of the frying time,the more of the polarized molecules in oil,the greater the impact on health.

关 键 词：电子电路设计 食用油检测 叉指电容传感器 AD7746 PIC18F452 

分 类 号：TS203[轻工技术与工程—食品科学]