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In this paper we proposed a new approach for improving distribution and coverage of mobile sensors in a target filed. The goal is to deploy sensors such that a target area is optimally covered by them. Proposed method works based on number of neighbors. The nodes which have the minimum overlaps with its neighbors start to move away according to summation of forces from their neighbors, boundaries and obstacles. In order to achieve optimum coverage, the effect of field corners is also calculated. For evaluating the effectiveness of our proposed algorithm, we compared the performance of our algorithm with TRI and VEC which are well known algorithms in field of mobile sensors coverage. Simulation results show that our algorithm surely surpasses TRI and VEC in coverage.