Study on an Optimization Method of Deployment for Wireless Sensor Networks in Buildings
Ming Zhu, Xiao Fen Yu, Jia Wen Hu, Biao Wang · Applied Mechanics and Materials · 2012
Wireless Sensor Networks (WSN) has been increasingly used in various fields of modern production and life, such as industrial control and environmental monitoring. However, there is no effective and universal algorithm at present for optimizing the deployment of WSN nodes in buildings. The main reason is the complex environment of the monitoring region which brings about the difficulty in determining the attenuation of wireless signal. The relationship between the Received Signal Strength Indicator (RSSI) and Packet Error Rate (PER) are discovered by the experimental method, then the corresponding mathematical model is also established by the experimental data. Based on different PER value, one method for optimizing the deployment of nodes in buildings is proposed by the RSSI value of the sensor node. This method can use fewer sensor nodes to cover the required monitoring region, which has the advantage of low-cost network construction, easy maneuverability and good versatility and et al. Finally, the deployment method of sensor nodes and the deployment example of temperature and humidity monitoring system are given in the paper.