Abstract: We addressed the issues of maintaining sensing complete coverage by keeping a minimum number of nodes.We investigated the network topology with the most coverage based on computational geometry, and a regular coverage enhancing algorithm(RCEA) was presented. I3y introducing the concept of virtual force and balanced energy factor,nodes will repel each other to eliminate the sensing overlapping regions and coverage holes along spiral scanning-path. It can enhance the whole coverage performance, and realize the optimal topology. A set of simulation results were performed to demonstrate the effectiveness of the proposed algorithm.

Key words: Wireless sensor network, Energy-efficient, Virtual force, Coverage enhancement