There are some problems in the current wireless sensor network (WSN) systems. One problem is that the interface between the ZIGBEE coordinator and user computer is not flexibility enough, so that the ZIGBEE coordinator is bulky. Another problem is failure to take full advantage of the potential two-way communication, only takes the coordinator as a data collection tool. This paper presents a general configurable WSN system based on SD card. And it can effectively address some deficiencies of the WSN system nowadays. We also design a demonstration to verify the effectiveness of the system.
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