Wireless sensor networks（WSNs） coverage is the key issues of WSNs

which reflects the network detection capability to the target area.The optimization of nodes sensing distance can be a good solution to the sensor networks area coverage requirements while allowing the lowest energy consumption.The perceptual distance parameter adjustment based on node WSNs energy-efficient regional coverage programs

the establishment of perception and the smallest radius of the mathematical model is studied

genetic algorithm is used to solve the model and the optimal solution.Simulation results show that compared with the traditional coverage of the program

the proposed scheme can meet the coverage requirements

while effectively reducing the network energy consumption.