摘要
为了准确、及时地获取停车位信息,无线停车管理系统需要各传感器节点的时间同步。为提高时间同步精度,文章根据无线停车管理系统应用架构特点,分析了无线停车管理系统的网络拓扑结构,给出了面向无线停车管理的时间同步方案。在簇头与簇头之间、簇头到汇聚节点之间以及汇聚节点到服务器之间采用传感器网络时间同步协议进行同步,而在簇内的传感器节点则采用参考广播同步。该同步方案具有较高精度,能满足无线停车管理系统时间同步需求。
The wireless parking management system needs the time synchronization of each sensor node in order to get the parking information accurately and timely.According to the characteristics of application architecture,network topology structure of the wireless parking management system is analyzed and its time synchronization scheme were given to improve the precision of time synchronization.The timing-sync protocol for sensor networks is adopted between cluster head and cluster head,cluster head to sink node and sink node to server.The reference broadcast synchronization is used between sensor nodes in each cluster.The synchronization scheme has high precision and can meet the time synchronization requirement of the wireless parking management system.
作者
李海洋
奉玲
Li Haiyang;Feng Ling(School of Information Engineering, Mianyang Normal University, Mianyang 621000, China)
出处
《信息化研究》
2018年第2期24-28,共5页
INFORMATIZATION RESEARCH
基金
四川省教育厅重点项目(No.17ZA0209)
绵阳师范学院项目(No.MYSY2017JC08
No.MnuJY1773)
关键词
无线停车管理
时间同步
参考广播同步
传感器网络时间同步协议
wireless parking management
time synchronization
reference broadcast synchronization
timing-sync protocol for sensor networks
