DSU can save and provide all of the CBTC data, and realize many data processing functions, such as data research, data exchange and data download.

• DSU存在的意义在于为CBTC系统存储和提供所有的系统数据,并在系统的范围内实现诸如数据查询、数据交换、数据下载等数据处理功能。