This paper deals with multiagent self-organization giving adaptive features to a distributed system embodied in an agressive environment. It proposes an original approach of open multiagent systems in the context of wireless networks of intelligent sensors. Such networks are composed by sensors with independant energy sources. These networks need routing techniques which minimize communication energy cost with a strong fault tolerant feature. The paper presents finally the simulation platform, which we built, who allows us to compare our solution based on self-organization and common ad hoc routing protocols.