Research on RSSI–based localization system in the wireless sensor network

Due to the rapid development in wireless sensor networks, the applications of the WSN have been extended to different environment and achieved a more diversified purpose. AS for the localization system, there are many related research achievements. A set of localization system is built through the system integration between the small-scale wireless hardware sensor and the wireless sensor platform, through the use of the RSSI and the integration of the fuzzy inference system. The blind nodes are experimented in the indoor environment so that the system’s efficiency can be verified. The system is implemented in the 8 meters multiplying 8 meters indoor space which is divided into 16 sections. Then 4 anchor nodes are placed in the corners and the fuzzy identification system is built for the nodes’ RSSI signal in the blocks. Later, the localization test is implemented in the random positions within the blocks. The experimental results show that the localization system accuracy rate is more than 80% and can successfully reach the preliminary localization system. © Hui Liu.