Title :
A Positioning System Design Based on RSSI Partition of Greenhouse Environment
Author :
Zhi-Yun Luo ; Li-Hong Xu ; Rui-Hua Wei
Author_Institution :
Coll. of Electron. & Inf. Eng., Tongji Univ., Shanghai, China
Abstract :
In order to improve the location accuracy in the complicated greenhouse environment, a positioning system is designed in this paper. According to RSSI data in the greenhouse, the parameters of the path-loss model are modified. Besides, least square estimation is used to filter RSSI data to eliminate random disturbance. Based on RSSI, the blind node is positioned by triangle centroid location method. Finally, to lessen the negative influence of steel pillars in the greenhouse, a region segmentation mechanism is introduced to the system. Experiments prove that our positioning system has higher accuracy in the greenhouse.
Keywords :
Global Positioning System; Zigbee; greenhouses; least squares approximations; wireless sensor networks; RSSI data filter; RSSI partition; Zigbee WSN; blind node; greenhouse environment; least square estimation; location accuracy; path-loss model parameters; positioning system design; random disturbance; region segmentation mechanism; steel pillars; triangle centroid location method; wireless sensor network; Accuracy; Agriculture; Data models; Green products; Mathematical model; Steel; Wireless sensor networks; RSSI locate; WSN; greenhouse environment; region segmentation; zigbee;
Conference_Titel :
Wireless Communication and Sensor Network (WCSN), 2014 International Conference on
Print_ISBN :
978-1-4799-7090-2
DOI :
10.1109/WCSN.2014.83
