Wireless communication based IEEE 802.15.4 has a wide range of application based on the restricted space.The information acquisition system was designed based on wireless sensor network
and study properties of system in the restricted space.Data collected by each node was analyzed
and the spread performance of the wireless signal in the restricted space was studied.At the same time
the RSSI and packet loss rate of data transmission between nodes was tested.The experiment proves that the system has excellent performance and practical value.
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