we design and implement a low-power wireless sensor network node.Firstly
by analyzing and comparing a variety of exiting node design
we select low-power chips
and propose a low-power node design based on the MSP430F149 processor and nRF24L01+wireless transceiver chip.Then
we describe the system software design.Finally
we test and analyze the energy consumption of the node carefully.The results show that the proposed node design and energy management strategies can achieve low power consumption of the node.