Design and application of sink node for Wireless Sensor Network

This paper studies a communicated architecture of Wireless Sensor Network. And the hardware design of the sink node which could be responsible for transmission data or instructions between sensor nodes and data terminal is discussed in detail. The sink node, which uses ZigBee, GPRS, and Ethernet techniques on ARM7 microcontroller, is capable of bridging the user terminal with sensor nodes for information transmission. Finally, an experiment based on Wireless Sensor Network has proved that the design of sink node is applicable and reliable in monitoring environmental elements such as temperature, humidity, etc.