Design, Development and Testing of Wireless Sensor Network Mote

Wireless Sensor Networks (WSN) have enormous potential because they expand human ability to monitor and interact remotely with the physical world. Smart sensor nodes called motes can collect huge amount of hitherto unknown data for a whole new class of computing applications. Nevertheless, to exploit the potential of WSN, it is required to address peculiar limitations of these networks and resulting technical issues including the mote design. To meet this trend, this paper presents design and development of an ultra-low power mote (ULPM) using TI´s MSP430F5132 microcontroller, CC2500 transceiver chip from TI and HTU21D relative temperature and humidity sensor from Measurement Specialties Inc. The design flow starting with component selection and followed by schematic design, PCB layout, hardware development, programming and testing is presented in the paper. Next, a comparative analysis of ULPM with Mica2/Micaz, TelosB/Tmote, SHIMMER, IRIS, Sun SPOT, EZ430-RF2480/F2500T and Waspmotes is presented. Finally simulation of LEACH protocol for all the motes is carried out. Analysis of network lifetime, data transmitted and energy consumption shows that ULPM outperforms its counterparts.