title: Micro sensor node for air pollutant monitoring: hardware and software issues.
abstract: Wireless sensor networks equipped with various gas sensors have been actively used for air quality monitoring. Previous studies have typically explored system issues that include middleware or networking performance, but most research has barely considered the details of the hardware and software of the sensor node itself. In this paper, we focus on the design and implementation of a sensor board for air pollutant monitoring applications. Several hardware and software issues are discussed to explore the possibilities of a practical WSN-based air pollution monitoring system. Through extensive experiments and evaluation, we have determined the various characteristics of the gas sensors and their practical implications for air pollutant monitoring systems.
authors.affiliation: Department of Computer Science, Yonsei University, Seodaemungu, Shinchondong, Seoul, Korea; E-Mails:  sukwon@cs.yonsei.ac.kr  (S.C.);  nykim@cs.yonsei.ac.kr  (N.K.).
authors.forename: Sukwon
authors.initials: S
authors.lastname: Choi
authors.forename: Nakyoung
authors.initials: N
authors.lastname: Kim
authors.forename: Hojung
authors.initials: H
authors.lastname: Cha
authors.forename: Rhan
authors.initials: R
authors.lastname: Ha