煤矿井下突发安全事故后,科学判断出救助点周围人员的分布是制定救援方案的关键。本文将反向最近邻的查询算法加以改进,用于查询救助点周围井下人员的分布情况,为实施最有效的救援提供依据。实验表明该算法适用于井下无线传感器网络中的移动对象的反向最近邻查询。 After a sudden accident in a coal mine, it is scientifically determined that the distribution of personnel around the rescue site is the key to formulating a rescue plan. In this paper, the reverse nearest neighbor query algorithm is improved, which is used to query the distribution of downhole personnel around the rescue site and provide the basis for the most effective rescue. Experiments show that the algorithm is suitable for reverse nearest neighbor query of moving objects in downhole wireless sensor networks.