传感器的五感:第一部分:嗅觉、味觉和听觉
在第一篇文章中的一系列更新“五感传感器”在2011区发表的文章(声音、视觉、味觉、嗅觉、触觉),我们将讨论在传感器技术,模仿人的嗅觉、味觉和听觉的进步。文章将侧重于底层传感器的变化和应用程序的增长,特别是在物联网的出现(物联网)。
嗅觉
电化学的鼻子,也被称为电子鼻,是一种化学气体传感器阵列的人工嗅觉装置,采样系统,和一个认识、识别、模式分类算法比较的气体,蒸汽,或气味。这样的电子鼻的模仿人的嗅觉系统。这些设备已成功地应用于各种各样的应用,包括检测食品质量,废水管理,测量和检测空气和水的污染,在医疗保健,在战争中。他们的优点之一是,收集的数据可以解释没有偏见。
In food safety the most common use is to determine the quality of tea, milk, alcoholic beverages, fruits, meats and fishes, cheese, and other dairy products. Gas sensors include methane, ethanol, toluene, o-xylene (an aromatic hydrocarbon based on benzene), CO2, and CH4.
For medical applications, e-nose devices are being explored for the detection of the cancer biomarkers necessary for early diagnosis and fast treatment. For example, researchers at the University of Tampere in Finland have used a device that conducts molecular analysis of the air above urine samples, testing it for the volatile organic compounds associated with prostate cancer. In a study they published last year the scientists claimed the method had a detection rate of 78 percent.
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