Institute of Fundamental Technological Research

In this paper we propose a new optimality measure for Wireless Sensor Network-based structural monitoring systems. First, we present the results of experiments showing the reasons for random effects in Wireless Sensor Network (WSN) functioning. Then, the formulas for calculating a network’s reputation measure are given. Finally, we conclude with arguments for the application of the reputation-based optimality measure in WSNs. We propose significantly new recommendations for the design and usage of WSNs.

Optimal sensors’ location, Wireless Sensor Network, Reputation system, Structural monitoring

In the paper we present the specific conditions that appear in structures' monitoring by means of Wireless Sensor Networks (WSN). First, we introduce the problem of optimal sensors' location for structures monitoring and its specific constraints if one uses WSN. We formulate the conditions that must be taken into account during optimization. Then, we give an example of temperature measurements and formulate the procedure that leads to finding optimal wireless sensors locations. Finally, we present the experimental observations of wireless sensors in the network that strongly affect on the temperature estimation on a basis of the collected measurements. We conclude with remarks concerning WSN practical design for permanent structures' monitoring to obtain exact and reliable results.