基于FAT文件系统的高速大数据记录仪的设计  

The design of high speed mass-data logger based on FAT file system

作　　者：王丹 姚磊 杨云川 杨向锋 WANG Dan;YAO Lei;YANG Yun-chuan;YANG Xiang-feng(The 705 Research Institute,China Shipbuilding Industry Corporation,Xi’an 710077,China)

机构地区：[1]中国船舶重工集团有限公司第705研究所

出　　处：《电子设计工程》2019年第20期75-78,83,共5页Electronic Design Engineering

摘　　要：为了解决对海洋环境探测时需要长时间存储大量数据且要求存储速率高、记录结果准确的需求,文中提出了一种基于FAT文件系统的数据记录仪的设计,其以微处理器TM4C129为核心,以SD卡为存储介质,通过对FAT32文件系统的移植以及对存储流程设计的优化,实现了高速准确的记录大规模数据,并通过挂接在外部两路CAN总线上,以1Mbps速率两路同时全速下发数据完成了对数据记录的测试,实验结果表明该系统运行准确可靠,并方便嫁接到其它需要存储数据的系统中。In order to meet the requirements of high storage efficiency and data results accuracy for the long term data logger that used to monitor ocean environment,the design of data logger based on FAT is presented in this article,this data logger include the core microprocessor TM4C129 and SD card which is used for restoring data,through the transplantation of FAT32 file system and optimization of process design,data logger with high speed and high accuracy is implemented,and finally passed the data record test by linking it to double CAN bus with the rate of 1Mbps,the experiment result shows that this data logger is reliable and easy to apply it on other systems.

关 键 词：FAT32 SD卡 TM4C129 数据存储 

分 类 号：TN40[电子电信—微电子学与固体电子学]