1. Reliability principle. The system and hardware equipment follow the principle of 24-hour stable and reliable operation, and can adapt to extremely harsh working environment. In the design, it is fully considered that the system and hardware equipment can still provide services to users when some failures occur, and can quickly eliminate the failures and resume normal operation.

2. Safety principle. The system shall adopt strict hierarchical management technology, operation password and smart card verification network authority design, and double authentication to effectively avoid illegal override operations. Management at all levels shall be defined by customer requirements; All data files shall be provided with security protection measures, and the creation, modification, deletion and query of data shall be authorized to prevent illegal operation of data; The modification and deletion of the original data are recorded in log files for future verification.

3. Expandability principle. In the system design scheme, the system is designed to be an economic benefit system with strong scalability and capacity expansion according to the viewpoint of system analysis, overall planning and development. The software system uses the advanced network development platform, takes the client/server architecture as the framework, and combines the modular and structured design ideas, that is, considering the ease of use at present, it is more advanced; The central system adopts the superposition module upgrade mode to gradually realize smooth expansion, reduce the complexity of system maintenance and upgrade, and improve the efficiency of system update, maintenance and upgrade; At the same time, the system has the ability to exchange and share data with other information systems. The computer network adapts to wide area expansion and opening, making the entire system easy to operate, simple and efficient, and convenient to provide timely information for management.

4. Standardization principle. During the system implementation, try to use the technology that conforms to the industrial standard to ensure the quality of the technology implementation and facilitate the daily maintenance and expansion of the system.