基于软件中间件的多类型视频编码板兼容性设计  

Compatibility Design for Multiple Types of Video Encoding Boards Based on Middleware

作　　者：张平 ZHANG Ping(Zhuzhou CRRC Times Electric Co.,Ltd.,Zhuzhou,Hunan 412001,China)

机构地区：[1]株洲中车时代电气股份有限公司,湖南株洲412001

出　　处：《控制与信息技术》2024年第1期87-93,共7页CONTROL AND INFORMATION TECHNOLOGY

摘　　要：针对机车车载安全防护系统机车自动视频监控及记录子系统(简称“6A视频子系统”)的设计、构建和维护过程中多种类型编码板兼容的问题,文章提出了一种利用软件中间件屏蔽底层软、硬件差异的设计方案,其从板卡识别、视频码流获取、关系解耦、差异注册和动态库加载等方面分析研究,设计了一个独立的软件中间件,实现了多种类型视频编码板的兼容。验证及应用结果表明,所提方案解决了在不重启视频系统的情况下不同类型视频编码板的动态替换和兼容性问题,从而提升了6A视频子系统批量应用和维护过程中的检修作业效率,单台车故障处理时间降低至原来的三分之一。多种类型视频编码板产品的便捷互换,可避免6A视频子系统的成套更换,从而大幅降低系统的检修成本。This paper aims to address compatibility among multiple types of encoding boards to streamline the design,construction,and maintenance processes of the automatic video surveillance and recording subsystem within locomotive on-board safety protection systems(referred to as the"6A video subsystem").It proposes a design solution that uses middleware to shield the differences between underlying software and hardware.By analyzing and delving into aspects such as board identification,video stream acquisition,relationship decoupling,differential registration,and dynamic library loading,the design incorporates independent middleware to achieve compatibility among multiple types of video encoding boards.Verification and application results underscored the efficacy of the proposed solution in addressing dynamic replacements and compatibility across different types of video encoding boards without necessitating a restart of the 6A video subsystem,thereby improving operational efficiency in batch application and maintenance of the 6A video subsystem.Specifically,the troubleshooting time for a single locomotive was reduced to 1/3 compared to scenarios without this design.Moreover,the convenient interchange of multiple types of video encoding boards can significantly reduce system maintenance costs by eliminating the need for complete replacements of the 6A video subsystem.

关 键 词：视频监控 编码板 软件中间件 兼容性 6A视频子系统 

分 类 号：TP311[自动化与计算机技术—计算机软件与理论]