A Novel Wireless Sensor Networks Platform for Habitat Surveillance

Wireless sensor networks are more adaptive to habitat surveillance applications than other technique due to high distribution density and self-organization of tiny sensor nodes. This paper introduced a framework of wireless sensor networks combined with GPRS (General Packet Radio Service) for habitat monitoring. Detailed presentation of a novel sensor node making use of ARM technology and IEEE502.15.4 standard was given. This paper concerned on energy management issue, realizing a light-weight and constant duty cycle energy management policy similar to S-MAC (Sensor Medium Access Control). Minimum, maximum and average power consumption of sensor node, under different CPU and VPB frequency, were measured when node was running test program to finish networking and application function. The results help users choosing the most appropriate frequency to optimize power consumption.