Institute of Analytical and Bioanalytical Chemistry , University of Ulm , Albert-Einstein-Allee 11 , 89081 Ulm , Germany.
JLM Innovation GmbH , Vor dem Kreuzberg 17 , 72070 Tuebingen , Germany.
ACS Sens. 2019 Sep 27;4(9):2277-2281. doi: 10.1021/acssensors.9b01244. Epub 2019 Aug 21.
An innovative concept for an electronic nose (eNose) system based on a unique combination of analog and digital sensors for online monitoring is presented. The developed system consists of small sensing arrays of commercially available semiconducting metal oxide (MOX) gas sensors in a compact, modular, low sample volume, temperature-controlled sensing chamber. The sensing chamber comprises three compartments, each of which may contain several analog and/or digital MOX sensors. Additional sensors within the digital compartment allow for pressure, humidity, and temperature measurements. The presented prototype eNose system comprises one compartment with 8 analog MOX sensors and two compartments with 10 digital sensors each and was explicitly tested here for the discrimination between midrange (3-18 ppm) concentrations of ethanol and acetone at dry and moderately humid conditions.
提出了一种基于模拟和数字传感器独特组合的电子鼻（eNose）系统的创新概念，用于在线监测。所开发的系统由小型商用半导体金属氧化物（MOX）气体传感器传感阵列组成，具有紧凑、模块化、低样品体积和温度控制的传感室。传感室由三个隔室组成，每个隔室可以包含几个模拟和/或数字 MOX 传感器。数字隔室中的附加传感器允许进行压力、湿度和温度测量。本文介绍的原型 eNose 系统包含一个具有 8 个模拟 MOX 传感器的隔室和两个各具有 10 个数字传感器的隔室，并且特别针对在干燥和中等湿度条件下区分中范围（3-18 ppm）浓度的乙醇和丙酮进行了测试。
