待发段地面逃逸控制组合设计及关键技术研究

The Design and Key Technology Research of Escape Control Combination in Pre-launching Stages

待发段地面逃逸控制组合作为载人航天工程待发段地面逃逸控制系统的核心组成部分,主要负责接收逃逸控制计算机和控制面板的指令,进行逻辑条件判断后与逃逸系统硬件设备完成有线逃逸控制指令的通信。针对酒泉卫星发射场现有控制组合设备设计较早、使用年限较长等问题,提出一种基于双冗余架构的高可靠待发段地面逃逸控制组合设计方案,采用主从冗余热备份设计实现系统级冗余架构,同时采用基于改进型Mod Bus/TCP协议的冗余网络通信技术、基于测试数据的故障自检测技术以及高可靠逻辑控制软件设计技术,极大提高控制组合的可靠性,缩短故障处理时间,降低待发段风险,满足载人航天飞行任务对待发段逃逸救生的需求,具有较强的工程意义和实用价值。

As the core part of the escape control system in the manned spaceflight engineering, escape control combination in pre-launching stages is mainly responsible for receiving the instructions from both the escape control computer and the control panel, and communicating with hardware equipment after the judgment of logic conditions. According to the situation of existing technique being ancient, a high reliability escape control combination is proposed based on dual redundancy. Thanks to the redundant network communication technology based on improved ModBus/TCP protocol, the fault detection technology based on the test data, and the high reliability technology based on logic control software design, the reliability of the control combination is greatly increased and the troubleshooting time is effectively reduced. It indicate that the methods proposed in this paper are of great value in engineering application, as it not only can reduce the entire system risk but also can meet the life-saving needs.