Abstract
Environmental pollution in the urban areas of Hong Kong has become a serious public issue but most urban inhabitants have no means of judging their own living environment in terms of dangerous threshold and overall livability. Currently there exist many low-cost sensors such as ultra-violet, temperature and air quality sensors that provide reasonably accurate data quality. In this paper, the development and evaluation of Integrated Environmental Monitoring System (IEMS) are illustrated. This system consists of three components: (i) position determination and sensor data collection for real-time geospatial-based environmental monitoring; (ii) on-site data communication and visualization with the aid of an Android-based application; and (iii) data analysis on a web server. This system has shown to be working well during field tests in a bus journey and a construction site. It provides an effective service platform for collecting environmental data in near real-time, and raises the public awareness of environmental quality in micro-environments.
Highlights
Urban areas are growing progressively in many metropolitan cities, and more urban inhabitants are subjected to the compromising burden of living in a polluted environment
It is well recognized that excessive exposures to heat, ultra-violet (UV) radiation, noise, and air pollution may result in injury, chronic illness, permanent disability or even death
A smartphone was placed in a small pocket on the shoulder harness of backpack, and an Integrated Environmental Monitoring Device (IEMD) was hand-held while walking through several locations near campus such as some nearby road repair works and a bus terminal, on April 2014, from 11:34 am to 12:06 am, and on April 2014 from 10:24 pm to 10:30 pm
Summary
Urban areas are growing progressively in many metropolitan cities, and more urban inhabitants are subjected to the compromising burden of living in a polluted environment. Quality sensor, which measured NOx, NH3, alcohol, benzene, smoke and carbon dioxide, and was connected via USB cable to a smartphone The data and their associated positioning information were uploaded to a web server for further processing. Common Sense [12,13] developed a portable handheld device that measured CO, NOx, O3, temperature and humidity data associated with GPS location These data were uploaded to a database server through GPRS [13]. Kanjo et al [14] developed a monitoring system named “MobGeoSen”; it was consisted of a default sound level sensor in a mobile phone, environmental sensors with data logger, a GPS receiver, and Bluetooth communication module These sensors and communication devices were not integrated into a single unit. Some low-cost environmental sensing devices are available on the market, with the escalating demand and use of smartphones, there is an urgent need to develop a personal environmental monitoring system integrating low-cost sensors, mobile application on smartphones, and GPS positioning
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