YAFFS在雨水情遥测终端数据存储系统中的改进  

Improvement of YAFFS in data storage system of Hydrology Remote Terminal Unit

作　　者：姚乾[1] 严华[1] 

机构地区：[1]四川大学电子信息学院,四川成都610065

出　　处：《人民长江》2013年第17期49-51,96,共4页Yangtze River

摘　　要：在现有的雨水情遥测系统中,YAFFS文件系统在存储数据时采用异地更新策略,因而存在NAND Flash存储空间利用效率低的问题。通过在YAFFS的写操作中引入覆写方法,并结合YAFFS的ECC校验技术,实现了数据本地更新策略,提高了NAND Flash的空间利用率,实现了数据的可靠存储以及有效管理。同时,对新的数据存储策略设计了专门的实验方案,并进行了大量的测试,结果表明,存储方式的改进不仅提高了数据存储空间利用率,节省了存储时间,还保证了数据存储的准确性。In the existing hydrology remote system, YAFFS file system realizes data storage by remote update strategy resulting in low utilization efficiency of NAND Flash storage space. Combined with ECC check technique, the partial page programming is introduced in writing operation to realize local data update in YAFFS file system, thus the memory space utilization of NAND Flash is improved and reliable storage and effective management of data are realized. Meanwhile, a specific experiment is designed for the new data storage strategy and a large amount of tests are conducted. The test result shows that the new storage system not only improves the utilization efficiency of data storage space and saves storage time, but also guarantees the accuracy of the stored data.

关 键 词：NAND FLASH YAFFS文件系统 覆写 本地更新 雨水情遥测 

分 类 号：TP317[自动化与计算机技术—计算机软件与理论]