Abstract:

A wireless sensor network node with light weight,small size,low energy consumption is designed.The node uses the MSP430 microcontroller as MCU,CC2420 as RF transceiver,FT232BM as conversion chip,and SHT11 temperature and humidity sensor.The other peripheral chips,power circuit and JTAG debugging interface are also included.Through JTAG debugging and the installation of TinyOS operating system,the date collection,wireless transmission and networking function are achieved effectively.

Key words: wireless sensor networks;wireless sensor note;MSP430;CC2420;SHT11;TinyOS