移动数据库在信号维护巡检终端中的应用  

Application of Mobile Database Technology in Signal Maintenance and Inspection-tour Terminal System

作　　者：张小花[1] 王瑞峰[1] 

机构地区：[1]兰州交通大学自动化与电气工程学院,兰州730070

出　　处：《铁道标准设计》2014年第8期152-156,共5页Railway Standard Design

基　　金：国家自然基金地区项目(61164010)

摘　　要：针对铁路信号设备传统巡检方式存在的弊端,利用移动数据库技术设计了信号维护巡检终端系统。重点阐述巡检终端的设计及实现过程,利用移动数据库存储设备故障信息和工作人员到位情况;采用UTLRSP(Union Transaction-Level Result-Set Propagation,关联事务结果集)移动复制模型并结合基于优先级的增量更新算法实现数据同步。该模型在数据同步之前将事务相关联,且只传输事务的结果,有效降低了巡检终端对存贮空间的消耗。结合基于优先级的增量更新算法,保证在无线网络带宽下降时,使优先级高的数据先传输,提高数据的传输效率及动态新鲜度。该系统有效避免信号设备不检、漏检现象,同时实现实时传输巡检数据,提高信号设备维护水平和信息化管理进程。To overcome the shortcomings in traditional railway signal equipment inspection-tour methods, the paper designed a signal maintenance and inspection-tour terminal system based on mobile database technology. The paper emphatically expounded the design and implementation process of the inspection-tour terminal system, also expounded how to use the mobile database to store equipment fault information and personal on-duty information. This system adopts UTLRSP （ Union Transaction-Level Result-Set Propagation ） , replication mobile model and combines with the priority-based incremental updating algorithm to achieve data synchronization. This model associates the transaction with other transactions before data synchronization, and only transfers the results of the transactions, effectively reducing the storage space consumption of inspection-tour terminal. Moreover, when wireless network bandwidth falls, the priority-based incremental updating algorithm will ensure that the high-priority data can be transmitted preferentially to improve the efficiency of data transmission and dynamic freshness. In addition, this system can effectively avoid the phenomenon of no or missing inspection of signal equipment, achieve real-time transfer of inspection-tour data, boost signal equipment maintenance level and promote informationized management process.

关 键 词：铁路信号设备维护 移动数据库 UTLRSP模型 优先级 同步 

分 类 号：TP207[自动化与计算机技术—检测技术与自动化装置]