Architecture Design of Software Defined Scientific Experiment Payload

This paper analyzes the characteristics of multiple complex scientific experiment systems of the space station, and puts forward a software definition architecture of unified software and hardware design. Through the universal and standardized design of the hardware processing platform, the interface standardization, modularization, binding and reconstruction of the software, and the redundant design and adaptive adjustment of communication and storage, it makes full use of hardware resources, maximizes the flexibility and scalability of software. The architecture improves the reuse rate and development efficiency of hardware and software, improves the reliability of the system, reduces the cost and shortens the development cycle. In engineering practice, three sets of scientific experiment subsystem used in the Chinese Space Station have been developed in parallel, and the expansion of experiment needs will be met in the next 10 years.