Abstract Number: 950 Working Group: Low-Cost and Portable Sensors
Abstract In recent years, air pollution has become an emerging concern and high public awareness topic. The advance in sensor technology and low power long range communication protocol enabled the development and deployment low cost air pollution monitoring network. Such a network established a higher spatial and temporal density data collection system compare to traditional FEM method. In Cooperate with Environmental Protection Administration (EPA), Taiwan, this study present a field deployment experience of smart city air pollution monitoring network. A total of 700 sensing devices was installed on the street light in 4 different areas in Taiwan, covering industrial park, city traffic, small town and countryside. Install location is carefully selected, with 300~500 meters apart of each sensor, forming a grid network around the area of interest in order to achieve a better understanding of the propagation of the pollutant. The design consideration of the device is presented, which will measure the PM2.5, CO, NO2, O3, related humidity and temperature, and report the reading to a central server every 3 minutes. Prior to the deployment, lab evaluation compare the FEM equipment and field evaluation compare to standard EPA monitoring station was conducted. Two communication protocols, LoRaWAN and LTE CAT-1, is used in the deployment and the performance of each protocol is evaluated. During the course of more than a year of operation, long term degradation of the sensors is also examined. We also present the lesson learned from the deployment, negotiation experience with the local authority, real field deployment restrictions and problems, as well as the maintenance requirement in the paper. At last, in cooperate with the Environment Inspection Bureau, a few inspection checks were conducted based on the sensor data collected, and the result is presented.