Abstract: To meet the need of instruction detection system used in complex natural environment, such as coastal mudflats, an improved barrier coverage model, a multi-line barrier coverage scheduling protocol named k-MLBCSP, a coverage layout algorithm and a coverage adjustment algorithm were proposed. The k-MLBCSP protocol divided the network lifetime into three phases. In the initialization phase, the coverage layout algorithm guaranteed reasonable network settings. In the adjustment phase, the coverage adjustment algorithm provided an effective way for the sink and alive senosrs to further negotiate coverage layout strategies. The theoretical analysis and simulations show that compared with LBCP and RIS, k-MLBCSP increases the sensor network's coverage probability and lifetime. Furthermore, k-MLBCSP reduces the time complexity and the network load.

Key words: Wireless Sensor Network (WSN), barrier coverage, sensor activity scheduling protocol, energy efficiency, coastal mudflat

摘要： 为了满足沿海泥滩等复杂自然环境中入侵监测系统的需要，改进了栅栏覆盖网络模型，提出了一种本地多行栅栏覆盖调度协议k-MLBCSP，设计了覆盖规划算法与覆盖调整算法。k-MLBCSP协议将网络生命期分为三个阶段，覆盖规划算法保证了初始化阶段网络的合理设置，覆盖调整算法提供了调整阶段sink节点与存活传感器节点进一步协商覆盖规划策略的有效方法。理论分析与仿真结果表明，相比于LBCP、RIS等协议，k-MLBCSP协议提高了网络覆盖率与网络生存期，且节点计算复杂度低，网络负载小。

关键词: 无线传感网络, 栅栏覆盖, 节点活跃调度协议, 能量有效, 沿海泥滩