基于上转换发光技术的便携式食品安全检测仪设计  

Design of portable food safety detector based on up-conversion phosphor technology

作　　者：康震 丁利 程云辉 朱颖越[2] 许宙 KANG Zhen;DING Li;CHENG Yunhui;ZHU Yingyue;XU Zhou(School of Chemistry and Food Engineering,Changsha University of Science & Technology,Changsha 410114,China;School of Biotechnology and Food Engineering,Changshu Institute of Technology,Changshu 215500,China)

机构地区：[1]长沙理工大学化学与食品工程学院,湖南长沙410114 [2]常熟理工学院生物与食品工程学院,江苏常熟215500

出　　处：《传感器与微系统》2019年第11期114-116,120,共4页Transducer and Microsystem Technologies

基　　金：国家重点研发计划资助项目(2016YFF0203701,2016YFF0103800);国家自然科学基金资助项目(31401566);粮食深加工与品质控制湖南省2011协同创新项目;常熟市科技发展计划(社会发展类)项目(CS201605);苏州市科技计划项目(SNG201617)

摘　　要：针对当前食品安全快速检测设备存在灵敏度低、无法准确定量检测等问题,设计了一种定量、快速的便携式食品安全检测仪,其能够快速筛查食品中多种食品危害因子。利用上转换材料处理食品样品产生特征荧光,设计了以STM32F103C8T6单片机为核心的检测仪进行检测荧光信号,包括信号检测光路系统和信号处理电路系统,以及嵌入式主控程序软件设计。实验结果表明:检测仪功耗低,体积小,准确度高,实际样品检测回收率在97.5 %~105 %之间,满足快速检测的需求。Aiming at the problem that the existing food safety detectors has low sensitivity and accurately and quantitative detection can not achieve,a quantitative and quick detector for food safety is designed,which can quickly detect many kinds of food contaminants.The food sample is processed with the up-conversion material,then it can produce characteristic fluorescence,the detector with STM32F103C8T6 microcomputer as the core is designed to detect the fluorescent signal,including signal detection optical path system,signal processing circuit system,and embedded master program software design.The experimental results show that the detector has characteristics of low power consumption,small volume and high accuracy.The actual sample detection recovery rate is at range of 97.5 %~105 %,which meets the requirements of rapid detection.

关 键 词：食品安全 上转换材料 硬件设计 软件设计 现场快速检测 

分 类 号：TP368[自动化与计算机技术—计算机系统结构] TP212[自动化与计算机技术—计算机科学与技术]