title: Wireless sensor networks for indoor air quality monitoring.
abstract: The purpose of this study is to build an indoor air quality monitoring system based on wireless sensor networks (WSNs) technology. The main functions of the system include (1) remote parameter adjustment and firmware update mechanism for the sensors to enhance the flexibility and convenience of the system, (2) sensor nodes are designed by referring to the IEEE 1451.4 standard. This way, sensor nodes can automatically adjust and be plug and play, and (3) calibration method to strength the measurement value's sensitivity and accuracy. The experimental results show that transmission speed improves 30% than Trickle, transmission volume reduced to 42% of the original volume, updating task in 5*5 network topology can be executed 1.79 times and power consumption reduced to 30%. When baseline drifts, we can use the firmware update mechanism to adjust the reference value. The way can reduce error percentage from 15% to 7%.
authors: Department of Computer Science and Information Engineering, Healthy Aging Research Center, Chang Gung University, Taiwan, ROC.
authors: Tsang-Chu
authors: TC
authors: Yu
authors: Chung-Chih
authors: CC
authors: Lin
authors: Chun-Chang
authors: CC
authors: Chen
authors: Wei-Lun
authors: WL
authors: Lee
authors: Ren-Guey
authors: RG
authors: Lee
authors: Chao-Heng
authors: CH
authors: Tseng
authors: Shi-Ping
authors: SP
authors: Liu
mesh_terms: D016902:Air Pollution, Indoor / Q000706:statistics & numerical data*; D002138:Calibration; D012015:Reference Standards; D013696:Temperature; D059015:Wireless Technology / Q000295:instrumentation* / Q000592:standards