Onboard Ethernet communication system
A communication system, Ethernet technology, applied in transmission systems, radio transmission systems, electrical components, etc., can solve problems such as increasing the complexity of the spaceborne system and failing to meet the bandwidth requirements of the spaceborne system, achieving simple physical wiring and preventing The effect of loosening and improving reliability
Active Publication Date: 2022-04-26
成都国星宇航科技股份有限公司
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At the same time, the use of existing communication connection methods will also increase the complexity of the physical connection of the spaceborne system, and cannot meet the increasing bandwidth requirements of the spaceborne system
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[0034] The technical solutions in the embodiments of the present application will be described below with reference to the drawings in the embodiments of the present application.
[0035] In the spaceborne system of the spacecraft, the communication connection methods commonly used at present include serial communication, bus communication and data transmission through the LVDS interface.
[0036] see figure 1 , figure 1 It is a communication connection method through the RS422 serial port adopted by the current spaceborne system. Using RS422 serial port connection can only realize the point-to-point communication connection between the satellite computer and each subsystem, and this method uses more hardware resources. The computer in each subsystem needs 4 signal lines to connect with the satellite computer. This also puts forward relatively high hardware resource requirements for the star mission computer, which increases the complexity of the physical connection of the e...
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The application provides a satellite-borne Ethernet communication system, which belongs to the field of satellite technology. The system includes: a satellite computer, and various subsystems connected to the satellite computer through Ethernet communication; the satellite computer and the computer of each subsystem Both include the onboard Ethernet communication device; the onboard Ethernet communication device includes: FPGA chip, used for sending and receiving and processing data; Ethernet communication chip, connected with the FPGA chip, and the Ethernet communication chip is used to send the FPGA chip One data is combined into a sending sequence and sent to the router, and the second data sent by the router is combined into a receiving sequence and transmitted to the FPGA chip. Through the Ethernet communication connection, the data bandwidth can be expanded, up to 1Gbps (transmission rate unit, one gigabit per second). At the same time, the hardware topology structure can be simplified, making the physical wiring in the on-board Ethernet communication system more concise.
Description
technical field [0001] The present application relates to the field of satellite technology, in particular, to a satellite-borne Ethernet communication system. Background technique [0002] In the spaceborne system of the spacecraft, the commonly used communication connection methods include serial communication, bus communication and data transmission through the LVDS (Low Voltage Differential Signaling, low voltage differential signal) interface. [0003] Since different subsystems in the onboard system may be configured with different communication interfaces, this leads to relatively high hardware resource requirements for the core processing unit (such as the onboard computer in the onboard system). At the same time, the use of existing communication connection methods will also increase the complexity of the physical connection of the spaceborne system, and cannot meet the increasing bandwidth requirements of the spaceborne system. Contents of the invention [0004]...
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IPC IPC(8): H04B7/185H01B11/06
CPCH04B7/18515H01B11/06
Inventor 郭涛赵宏杰陆川刘芋宏
Owner 成都国星宇航科技股份有限公司