Sensor network for environmental and traffic-related measurements

The paper is concerned with the development of an experimental wireless sensor network for environmental and other measurements related to road-based transportation in an urban environment. Three new types of compact sensor units have been developed for use in this network. A “master” unit capable of measuring CO, NO
₂
, SO
₂
, VOC, dust particle (PM
_2.5
and PM
₁₀
) and noise pollution, a “slave” unit for gathering measurements with low power requirements and a “mobile” unit for location-independent environmental measurements. An experimental network made up of master units (for pollution measurements gathering) and slave-based weather stations (for measuring dispersion conditions) is currently installed in the Spořilov district in Prague. The network is designed to provide current information about the environmental impact of roadway transportation to citizens and to the public authority.