基于ZeroMQ的观测控制系统底层通信架构分析与测试

Analysis and Test of Underlying Communication Architecture of Observation Control System on the Basis of ZeroMQ

观测控制系统是当前的一个研究热点,底层通信是观测控制系统架构的一个重要环节。但传统的观测控制系统一般采用裸套接技术实现,缺少统一的传输控制机制,在密集数据通信时经常存在延迟,影响实时控制的需要;同时缺少广播与组播机制,限制了观测控制系统的设计。针对观测控制系统的要求,研究了基于ZeroMQ不同通信模型及对应的天文控制模式,分析了不同的通信控制架构的可用性,在此基础上通过实验对相应的通信模型进行测试,验证其在天文仪器分布控制中的可用性。测试结果进一步说明,ZeroMQ构建观测控制系统的底层通信架构是可行的,能够满足观测控制系统对设备的各种控制需求。

Observation Control System(OCS)is currently a research hotspot.The underlying communication is an important part of OCS architecture.However,the traditional OCS is generally implemented by bare socket technology.It lacks a unified transmission control mechanism.There are often delays in intensive data communication,which affects the need for real-time control.At the same time,the lack of broadcast and multicast mechanisms limits the design of OCS.According to the requirements of OCS,this paper systematically researches and analyzes the different communication models based on ZeroMQ and the corresponding astronomical control modes,it also analyzes the availability of different communication control architecture.On this basis,the corresponding communication model is tested by experiments to verify its availability in the distributed control of astronomical instruments.The test results further show that it is feasible for ZeroMQ to construct the underlying communication architecture of OCS.ZeroMQ can also meet the various control requirements of OCS for the equipment.