智能车载DCU数据高效传输及变步长提取  

Efficient Transmission and Variable Step Extraction for Data in Intelligent Vehicle Domain Controller

作　　者：张震 童斌 付建军 袁正 余红英 陈勇[3,4] ZHANG Zhen;TONG Bin;FU Jianjun;YUAN Zheng;YU Hongying;CHEN Yong(School of Electrical and Control Engineering,North University of China Taiyuan 030051;Chongqing Chang'an New Energy Automobile Technology Co.,Ltd.Jiangbei Chongqing 401133;School of Automation Engineering,University of Electronic Science and Technology of China Chengdu 611731;Institute of Electric Vehicle Power System and Safety Technology,University of Electronic Science and Technology of China Chengdu 611731)

机构地区：[1]中北大学电气与控制工程学院,太原030051 [2]重庆长安新能源汽车科技有限公司,重庆江北区401133 [3]电子科技大学自动化工程学院,成都611731 [4]电子科技大学电动汽车动力系统与安全技术研究所,成都611731

出　　处：《电子科技大学学报》2022年第4期535-541,564,共8页Journal of University of Electronic Science and Technology of China

基　　金：国家自然科学基金(61973331);重庆市技术创新与应用发展专项(cstc2019jscx-mbdxX0055)。

摘　　要：首先,针对智能车载域控制器的多任务信息特点,提出了基于多任务网络通信的数据导出系统。该系统将任务管理所需绝对路径分解为低耦合度的子目录字段,把单文件断点续传功能扩展到多任务场景,提高数据传输效率。其次,根据行车数据存储特点提出变步长数据提取方法,利用时间戳信息实现有效数据的快速检索定位。实验结果表明,该方法实现了数据的高效传输和准确提取,证明了该方法的有效性。In view of the multi-task information characteristics of the intelligent vehicle domain controller, a data export system for multi-task network communication is proposed. The system decomposes the absolute path required by task management into sub directory fields with low coupling, extends the function of single-file breakpoint resuming to multi-task scenarios to improve the efficiency of data transmission. Next, according to the storage characteristics of driving data, a variable-step data extraction method is proposed, and the time stamp information is used to realize the rapid retrieval and positioning of effective data. The experimental results show that the method achieves efficient data transmission and accurate extraction, which proves the effectiveness of the method.

关 键 词：黑匣子 断点续传 数据提取 FTP传输 hooke-jeeves 模式搜索 变步长 

分 类 号：TP274.2[自动化与计算机技术—检测技术与自动化装置]