Evolution of Wireless Sensor Network for Air Quality Measurements

Patricia Arroyo,José Suárez,Jesús Lozano

doi:10.3390/electronics7120342

Abstract

This study addresses the development of a wireless gas sensor network with low cost, small size, and low consumption nodes for environmental applications and air quality detection. Throughout the article, the evolution of the design and development of the system is presented, describing four designed prototypes. The final proposed prototype node has the capacity to connect up to four metal oxide (MOX) gas sensors, and has high autonomy thanks to the use of solar panels, as well as having an indirect sampling system and a small size. ZigBee protocol is used to transmit data wirelessly to a self-developed data cloud. The discrimination capacity of the device was checked with the volatile organic compounds benzene, toluene, ethylbenzene, and xylene (BTEX). An improvement of the system was achieved to obtain optimal success rates in the classification stage with the final prototype. Data processing was carried out using techniques of pattern recognition and artificial intelligence, such as radial basis networks and principal component analysis (PCA).

Highlights

In most cities, air quality improved over the past decades
This paper describes the development of a wireless sensor network (WSN) for gas sensors to paper describes theevolution development of project, a wireless sensor network (WSN) for to detect air During the of the four different prototypes of gas the sensors device were detect air quality
The same measurements were made for each of the versions of the designed wireless networks, except in the case of the PV1, which was developed in order to make first contact with the technology used, and only had one gas sensor (TGS2600, Figaro, Japan)

Summary

Introduction

Air quality improved (significantly) over the past decades. Visible air pollution (smoke, dust, and smog) disappeared from many cities due to local, national, and European initiatives.the current air quality still affects the health of the population. Air quality improved (significantly) over the past decades. Visible air pollution (smoke, dust, and smog) disappeared from many cities due to local, national, and European initiatives. The current air quality still affects the health of the population. Organization (WHO), 1.7 million children die as a result of contaminated environments (indoor and outdoor) [1]. The Health Effect Institute concludes from its studies that long-term exposure to air pollution in 2016 was responsible for the deaths of 6.1 million people due to strokes, heart attacks, lung diseases, and lung cancer [2]. A problem common to almost all major cities

Methods

Results

Conclusion