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This paper discusses the use of Wireless Sensor Networks (WSN) for low data rate and power constrained applications like precision agriculture. Studies of different WSN technologies were conducted and their utility in precision agriculture was evaluated. A ZigBee based sensor node was implemented and field tested. The Sensor Network was also simulated in network simulator (NS2.34) and various network...
This paper deals with global power consumption modeling dedicated to Wireless Sensor Network (WSN) nodes. After having introduced various existing approaches for the energy modeling, our choices and experiments using the Ns-2 simulator and the iMote2 hardware platform (over an IEEE 802.15.4 protocol) are presented. First results show that Ns-2 simulator provides RF energy consumption metrics very...
This paper presents an adaptive MAC protocol applying to battery powered wireless senor monitoring network, which could tolerate a certain amount of packet loss but require long lifetime. We are interested in the tradeoff between power consumption and a certain amount of packet loss which application could tolerate. The adaptive MAC protocol, which would choose pure Aloha based transmission or CSMA...
This paper describes the modeling of a microsensor node dedicated to wireless sensor network applications. The definition of the different node modes is first introduced: wake-up, measure, processing, transmission, reception and sleep. Then, contrary to the literature, a complete sensor node energy model is derived and used to analyze node autonomy. This model allows to estimate the part of each element...
The most challenging issue of sensor networks is extension of overall network system lifetimes. It is important for the extension of system lifetime to determine the routing considering data aggregation. Data aggregation can reduce network traffic by the elimination of the redundant data. Though data aggregation is effective, sensor node needs a certain amount of RAM to aggregate data. RAM has standby...
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