【摘要】 针对航空维修一线管理系统的终端——便携式维修支持系统(Portable Maintenance Aids,PMA)在航空维修一线中遇到的脱机工作问题,研究了维修一线管理系统在偶尔连接模式下的数据处理策略,提出了维修一线管理系统偶尔连接模式的数据访问模型。在此基础上,从长期数据缓存的选取和数据同步机制研究了系统的实现。实际运行的效果表明,支持偶尔连接模式的维修一线管理系统能够很好地适应航空维修一线的网络环境,更加充分地发挥功效。更多还原

【Abstract】 To solve problems of PMA’s offline-work in the field of aircraft maintenance,the paper researches strategy of data processing in occasional connect mode is researched and a data accessing model of "occasional connect" is proposed.On the basis of the model,the paper expatiated the process of its implementation from two aspects which are the choice of long-term data cache and synchronization mechanism.The primary application proves that it can be adapted to complex network condition in the field and can greatly enhance the ability of aircraft maintenance support.更多还原