船用时统设备NTP网络授时服务的实现

为了满足船用入网设备多样化的用时需求,并保证船舶系统内部时间的一致性和准确性,在满足船用时间统一系统特点的基础上,设计了一种具有NTP网络授时功能的船用时统设备,增强了船用时统设备的通用性。时统设备作为船舶系统的NTP 1级授时服务器,基于NTP向用时用户同步时间。根据实际使用环境,给出了NTP网络授时最简方案,并对NTP授时精度进行了实验验证。实验结果表明,该设备NTP授时方式满足船舶用时设备需求,授时精度优于450μs。

Implementation of NTP Based Timing System for Marine Timing System

In order to meet the time requirements of various marine network equipment and ensure the consistency and accuracy of the internal time of the ship system,on the basis of meeting the characteristics of the unified system of marine time,a kind of marine timing equipment with NTP timing function is designed,which enhances the universality of marine timing equipment.As the NTP level 1 timing server of ship system,timing equipment synchronizes time to users based on the NTP.According to the actual work environment,the simplest scheme of NTP timing is presented,and the accuracy of NTP timing is verified by experiment.The experiment result shows that the precision of ship-borne NTP timing system is better than 450μs,which meets the needs of ship equipments.