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基于初始作用期测量的低功耗低成本环境物联网电子鼻

Low-Power and Low-Cost Environmental IoT Electronic Nose Using Initial Action Period Measurements.

作者信息

García-Orellana Carlos J, Macías-Macías Miguel, González-Velasco Horacio M, García-Manso Antonio, Gallardo-Caballero Ramón

机构信息

CAPI Research Group and Instituto de Computación Científica Avanzada (ICCAEx), Universidad de Extremadura, E-06006 Badajoz, Spain.

出版信息

Sensors (Basel). 2019 Jul 19;19(14):3183. doi: 10.3390/s19143183.

DOI:10.3390/s19143183
PMID:31331017
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6679561/
Abstract

In this work, we present a complete hardware development and current consumption study of a portable electronic nose designed for the Internet-of-Things (IoT). Thanks to the technique of measuring in the initial action period, it can be reliably powered with a moderate-sized battery. The system is built around the well-known SoC (System on Chip) ESP8266EX, using low-cost electronics and standard sensors from Figaro's TGS26xx series. This SoC, in addition to a powerful microcontroller, provides Wi-Fi connectivity, making it very suitable for IoT applications. The system also includes a precision analog-to-digital converter for the measurements and a charging module for the lithium battery. During its operation, the designed software takes measurements periodically, and keeps the microcontroller in deep-sleep state most of the time, storing several measurements before uploading them to the cloud. In the experiments and tests carried out, we have focused our work on the measurement and optimization of current consumption, with the aim of extending the battery life. The results show that taking measurements every 4 min and uploading data every five measurements, the battery of 750 mAh needs to be charged approximately once a month. Despite the fact that we have used a specific model of gas sensor, this methodology is quite generic and could be extended to other sensors with lower consumption, increasing very significantly the duration of the battery.

摘要

在这项工作中，我们展示了一款专为物联网（IoT）设计的便携式电子鼻完整的硬件开发及功耗研究。得益于在初始作用期进行测量的技术，它可以由一个中等尺寸的电池可靠供电。该系统围绕知名的片上系统（SoC）ESP8266EX构建，采用低成本电子元件和费加罗公司TGS26xx系列的标准传感器。这款SoC除了具备强大的微控制器外，还提供Wi-Fi连接功能，使其非常适合物联网应用。该系统还包括一个用于测量的精密模数转换器和一个锂电池充电模块。在运行过程中，设计的软件会定期进行测量，并使微控制器大部分时间处于深度睡眠状态，在将几次测量数据上传到云端之前进行存储。在进行的实验和测试中，我们将工作重点放在了功耗的测量和优化上，目的是延长电池寿命。结果表明，每4分钟进行一次测量且每五次测量上传一次数据，750毫安的电池大约每月需要充电一次。尽管我们使用了特定型号的气体传感器，但这种方法非常通用，可以扩展到其他功耗更低的传感器，从而显著延长电池的续航时间。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/70bd/6679561/28c932d5b245/sensors-19-03183-g015.jpg
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