机载以太网数据记录系统设计与实现  

Design and Implementation of Airborne Ethernet Data Recording System

作　　者：魏凯强 赵光磊[1] WEI Kai-qiang;ZHAO Guang-lei(The 27th Research Institute of China Technology Group Corporation, Zhengzhou 450047, Chin)

机构地区：[1]中国电子科技集团公司第二十七研究所,河南郑州450047

出　　处：《电脑与信息技术》2018年第3期64-67,共4页Computer and Information Technology

摘　　要：航空电子设备的复杂程度和信息综合程度不断提高,尤其是特种飞机任务电子系统具有较高的信息收集能力,传统数据总线无法满足其数据通信要求。随着网络技术的发展,以太网以其传输速率高、扩展能力强等特点,已广泛应用于军、民用飞机的设计。文章介绍了一种基于网络监听、动态内存池和多线程的机载以太网任务数据记录系统。该系统连接交换机监视端口,通过交换机映射功能将网络数据镜像到监视端口,利用原始套接字完成任务数据的捕获。针对以太网数据传输速率高的特点,设计了动态内存池以更高效地使用和管理数据缓存,并利用多线程技术实现了任务数据捕获、过滤和存储的并行执行,从而大幅提高数据记录速率。测试结果表明该系统可有效应用于机载高速网络环境下的数据记录。The complexity of electronic avionics and the comprehensiveness of information are constantly improving. In particular, mission electronic systems of special aircraft have high capabilities for information collection, and traditional data buses can＇t meet their data communication requirements. With the development of network technology, Ethernet has been widely used in the design of military and civilian aircraft due to its high transmission rate and strong scalability. This article describes an airborne Ethernet mission data recording system based on network monitoring, dynamic memory pool and multithread. The system is connected to the switch monitoring port, which mirrors the network data to the monitoring port through the switch mapping function and uses the raw socket to capture the task data. In view of the high data transmission rate of Ethernet, the dynamic memory pool is designed to use and manage the data cache more efficiently, and the multi-threading technology can realize the parallel execution of task data capture, filtering and storage, thus greatly increasing the data recording rate. The test results show that the system can be effectively used in airborne high-speed network environment data records.

关 键 词：任务电子系统 数据记录 网络监听 原始套接字 动态内存池 多线程 

分 类 号：TP393.1[自动化与计算机技术—计算机应用技术]