Abstract:In the case of uncertain intruding time in a multi-target invasion scenario, some sensors maintain actuated state though cannot cover the targets, which leads to the reduction of coverage impact and consuming sensors extra energy. To address this problem, this paper proposes a Visual Sensors Rotating Algorithm (VSRA) to improve the utilization of sensors, which can also satisfy real-time k-barrier coverage requirement. It divides the surveillance area into several regions and Sensors rotate to directions with higher weight in invaded regions. Our simulation results show that the proposed VSRA can improve the energy efficiency of sensors and prolong the network lifetime.