Optimized Deployment And Simulation Of Wireless Sensor Network

Wireless sensor networks are a hot area of research in recent years, which was rated as the most important technology in 21st century, and one of the best prospects for development of technology, will have a very significant impact on human life. Wireless sensor network technology integrates sensor technology, embedded computing technology, distributed information processing and communication technology and other technical fields, has broad research space, and attracts a large number of scholars.Reasonable deployment of sensors can improve the coverage of monitoring sensor networks, the accuracy of data and greatly reduce sensor's energy consumption. This paper aims to evaluate the optimal deployment of wireless sensor network coverage, and how to optimize the layout of Sensors in the sensor region for the sake of increasing the network coverage.This paper covers two sides content: (1) Optimal deployment of wireless sensor networks. Summarize current optimization deployment algorithms of sensor network. Introduce the virtual force algorithm in details, simulate, analyze and compare the simulation results. In view of the algorithm's disadvantage, this paper improves it. Results show that improved algorithm can increase the coverage, reduce re-deployment energy consumption, prolong life cycle of nodes. (2) Heterogeneous wireless sensor networks deployment with super-nodes. Heterogeneous network deployment means that some super-nodes added into sensor region with sufficient energy and wired or wireless transmission. Super-nodes can collect sensing data from nodes around it, and directly communication with cluster-node. They can greatly reduce network transmission path, thereby saving energy, and improve network life cycle.