车载终端数据异步发送架构设计与应用
孙龙洋1，2，3，纪少波2*，李国朋1，3，张延良1，3
1.潍柴动力股份有限公司，山东 潍坊 261061；
2.山东大学核科学与能源动力学院，山东 济南 250061；
3.内燃机与动力系统全国重点实验室，山东 潍坊 261061
摘要：针对不同地域通信质量对车载终端数据发送影响较大、数据丢包率较高的问题，为进一步优化和提高数据传输质量，基于传输控制协议缓存的方式，设计一种涵盖数据读取、存储、传输的异步处理架构，引入数据缓存池，将数据接收和发送过程拆分，实现车载终端在盲区时存储和实时传输两种模式之间的数据缓冲。选取不同地区的10台商用车，对比应用网联数据异步发送架构前、后的数据传输丢包率。结果表明：应用网联数据异步处理架构后，数据传输完整性明显改善，信号强度对数据传输的影响明显降低；网联数据异步发送架构显著提高了数据传输的质量，增强了车载终端在不同通信网络质量环境下的数据发送适应性。
关键词：车载终端；数据接收；数据缓存；数据打包；数据发送
Design and application of asynchronous data transmission architecture for a vehicle terminal
SUN Longyang1,2,3, JI Shaobo2*, LI Guopeng1,3, ZHANG Yangliang1,3
1. Weichai Power Co., Ltd., Weifang 261061, China;
2. School of Nuclear Science, Energy and Power Engineering, Shandong University, Jinan 250061, China；
3. State Key Laboratory of Engine and Powertrain System, Weifang 261061, China
Abstract: To address the issue of significant impact on vehicle terminal data transmission due to varying communication quality across regions and packet loss, this study further optimizes and enhances data transmission quality by designing an asynchronous architecture for data reading, storage, and transmission. Based on TCP protocol caching, a data buffer pool is introduced to separate data reception and transmission processes, enabling data buffering between blind zone storage and real-time transmission modes for vehicle terminals. By comparing data transmission performance before and after implementing this solution across 10 vehicles in different regions, the results show that the asynchronous vehicle-to-cloud data transmission architecture significantly improves data integrity and markedly reduces the impact of signal strength variations. The proposed architecture demonstrates notable effectiveness in enhancing data transmission quality and improves the adaptability of vehicle terminals to varying communication network conditions.
Keywords: vehicle terminal; data receiving; data caching; data packing; data transmission
