Configuration of wireless sensor network in olomouc

Abstract

Wireless sensor network is a new fast evolving technology used in both environmental and socioeconomic applications. The usage of this technology in a city environment is influenced by many factors dealing with technical parameters of the nodes, parameters of terrain and other disturbing factors in a city such as signal interruptions, etc. The biggest advantage of this technology is the real-time moni-toring. Every wireless sensor network has technical parameters that are tested in a real terrain deployment. Distribution of nodes under the real conditions is adjusted to the results of the technical tests. These parameters include determination of the least loaded communication channel, computation of data delivery ratio (DDR), testing of battery consumption under defined conditions and determination of received signal strength indicator (RSSI). Experimental wireless sensor network was established in Olomouc in 2015. Wireless nodes Waspmote Plug and Sense produced by Spanish company Libelium are used. Olomouc wireless sensor network is oriented on meteorological monitoring. The attention is aimed at air pol-lutants related to traffic. The nodes are situated to two clusters—the first cluster is located to the uptown part of Olomouc, the second one is located to the centre of Olomouc. The communication between nodes and gateway is carried out using IEEE 802.15.4 protocol. The goal of this paper is to evaluate technical data from the real deployment of the nodes and to use it for the design of optimal wireless sensor network using Libelium devices equipped with 802.15.4 radio.