GB/T 34829-2017 in English
VALIDSpace station specification of utilization payload data communication
- Issued on:2017-11-01
- Implemented on:2018-05-01
- File Format:PDF
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《GB/T 34829-2017空间站应用有效载荷数据通信规范》由TC312（全国空间科学及其应用标准化技术委员会）归口，主管部门为中国科学院。
Introduction
Interpretation of the National Standard of the People's Republic of China GB/T 34829-2017
1. Background and significance of standard formulation
GB/T 34829-2017 "Space Station Application Payload Data Communication Specification" is an important standard in my country's aerospace field, which aims to standardize the data communication interface between various payloads and application information systems and experimental cabinets on the space station.
2. Comparison of standard frameworks
| Interface type | Physical layer | Link layer | Application layer |
|---|---|---|---|
| MIL-STD-1553B interface | GJB 289 specification, dual redundant structure | Static bus control, multiple retransmission strategy | Comply with the data packet format in Figure 3 |
| FC-AE-1553 interface | Fibre Channel physical layer, support star/bus topology | Link synchronization and flow control mechanism | Comply with ANSI INCITS 450-2009 |
| Ethernet interface | IEEE std 802.3ab-1999, Gigabit Ethernet | MAC address and frame format | Static IP allocation, UDP/TCP protocol |
| RS422 interface | ANSI/TIA/EIA-422-B electrical characteristics | Asynchronous serial communication, odd parity check | Point-to-point transmission mode |
3. Analysis of Technology Evolution
With the development of space station technology, data communication interfaces have gradually evolved from the initial bus topology (such as MIL-STD-1553B) to Fibre Channel and Ethernet. The introduction of the FC-AE-1553 interface has improved data transmission rate and reliability, while the Ethernet interface has facilitated large-scale device interconnection.
4. Implementation Suggestions
4.1 Interface Selection Principles
- High real-time requirements: FC-AE-1553 or MIL-STD-1553B interfaces are preferred
- Long-distance transmission requirements: Fibre Channel interface (FC-AE-1553) is used
- Internal interconnection of laboratory cabinets: RS422 or Ethernet interface is recommended
4.2 Network Planning Suggestions
In actual applications, the interface combination should be flexibly selected according to the payload type and mission requirements. For example:
- Payload inside the cabin: FC-AE-1553 or MIL-STD-1553B
- Payload outside the cabin: FC-AE-1553 or MIL-STD-1553B
- Inside the test cabinet: Mixed use of RS422 and Ethernet interfaces
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