A visible light communication system and method applied to data transmission in spacecraft cabin

Abstract

The invention discloses a visible light communication system and method applied to data transmission in a spacecraft cabin. The system includes a transmission matcher, an optical radiation module, anin-cabin transmission channel, an optical receiving module and a reception matcher. The transmission matcher carries out protocol conversion and level matching processing on an input electrical signalto obtain an output signal. The optical radiation module transmits a visible light intensity signal according to the output signal of the transmission matcher. The in-cabin transmission channel transmits the visible light intensity signal to the optical receiving module. The optical receiving module filters stray light of the visible light intensity signal and then carries out photoelectric conversion to obtain an electrical signal, and amplifies and filters the electrical signal and transmits the signal to the reception matcher. The reception matcher carries out protocol conversion and levelmatching processing on the electrical signal which is subjected to amplification and filtering process and inputs the signals into a spacecraft device. According to the system and the method, the load capacity of the spacecraft is effectively improved without being limited by the spectrum specification, electromagnetic interference and personnel safety problems.

Description

technical field [0001] The invention belongs to the field of visible light communication, and in particular relates to a visible light communication system and method applied to data transmission in a spacecraft cabin. Background technique [0002] In recent years, with the increasing development of aerospace technology and the continuous increase of spacecraft functions, the structure of the spacecraft cabin has become more and more complex, and the number of electronic devices carried is also increasing. In this case, on the one hand, the electromagnetic environment in the spacecraft cabin becomes extremely complex, which puts forward very high requirements for the system electromagnetic compatibility design. On the other hand, twisted-pair wires and coaxial cables are used to interconnect traditional spacecraft cabin equipment. These cables are bulky and often cause crowded space in the cabin; their weight accounts for as much as 7% of the dry weight of the spacecraft. -...

AI Technical Summary

Problems solved by technology

In this case, on the one hand, the electromagnetic environment in the spacecraft cabin becomes extremely complex, which puts forward very high requirements for the system electromagnetic compatibility design

On the other hand, twisted-pair wires and coaxial cables are used to interconnect traditional spacecraft cabin equipment. These cables are bulky and often cause crowded space in the cabin; their weight accounts for as much as 7% of the dry weight of the spacecraft. -10%, severely limits spacecraft payload

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