Low Power Design of the Terminal Node for Wireless Sensor Network

A prototype of wireless sensor network terminal is designed based on the energy finitude characteristic.The hardware system consists of MSP430F149 ultra low power MCU and other correlative energy efficiency devices.Furthermore,the protocol adopts the sleep mode and awakening mode to alterative working for saving energy.At the end,network-building experiment performed shows that,with the 3 V power supply,the current of transmitting mode,receiving mode and sleep mode is less than 15 mA,7 mA,65 μA respectively.