Satellite integrated electronic system

Abstract

The invention discloses a satellite integrated electronic system which comprises a satellite-borne integrated management chip LSMEU01, a satellite service scheduling management unit SIP, a CAN bus communication network and satellite subsystems. The satellite-borne integrated management chip LSMEU01 is embedded into the satellite subsystems, and information interaction is carried out on the satellite-borne integrated management chip LSMEU01 and the satellite service scheduling management unit SIP through the CAN bus communication network. According to the satellite integrated electronic system, the connection complexity of satellite-borne equipment can be effectively lowered, the integration level of the system can be improved, the scale, weight and power consumption of the satellite-borne electronic equipment can be reduced, the satellite hardware states can be unified, the reliability, real-time performance and safety of satellite-borne network communication equipment can be guaranteed, the procurement cycle and product protection complexity can be reduced, and the aim of constructing a satellite development mode of meeting low cost, mass production and fast response can be achieved.

Description

technical field [0001] The invention relates to a fast-response satellite integrated electronic system, which belongs to the field of satellite overall design. Background technique [0002] In the current design and manufacture of small satellites, each subsystem of the satellite is provided by a research unit with corresponding qualifications, and the overall unit of the satellite is responsible for the later assembly and integration testing of the satellite. Such as figure 1 Shown is a typical traditional satellite distributed electronic system structure. Each subsystem of the satellite is independently designed with the interface board of the on-board network, resulting in the difference between the central processor and peripheral chips of the interface board, and the communication timing is uncontrollable. Especially in the CAN-based on-board network, the fault point is easy to spread and cause the fault not to be located, which seriously interferes with the communicat...

AI Technical Summary

Problems solved by technology

[0003] To sum up, the main defects of the traditional satellite system are: (1) The interconnection communication interface between the satellite systems is not unique, and there is serious interconnection interference between the systems

(2) The communication interface on the star is not standard

Due to the differences in the understanding of the communication protocol and the implementation of the coding by the designers of each subsystem, the satellite communication protocol is inconsistent, and the difference in the hardware interface circuit also leads to the diversity of connection methods and signal characteristics, which is not convenient for the whole satellite integration test

(3) The internal equipment function integration degree of the sub-system is low

Traditional satellite system design circuit, chip integration is low, complete the management tasks of the electronic system, requires CPU and a large number of peripheral control chips, the connection circuit is complex, power consumption and volume consumption are large

(4) The whole star cable connection relationship is complex

The connection relationship between satellite subsystems is complex, and the cables are connected in series between different cabins, and the cables are prone to faults and the faults are difficult to locate

(5) Complex procurement and product quality assurance procedures

The diversity of applications leads to the diversity of equipment types on the satellite, and the diversity of satellite equipment types leads to more and more research and development units, and the technical status is becoming more and more complex

Images