Energy and information composite transmission system for implementing full duplex communication based on galvanometer

Abstract

The invention provides an energy and information composite transmission system for implementing full duplex communication based on a galvanometer, and belongs to the field of laser communications. Inorder to solve the existing technical problem, a first signal source loads signals to a laser through a biasing circuit, the signals are collimated by a first collimating lens through a splitter, andthen emitted to a passive end; after a second collimating lens receives light, the light is converged to a diaphragm center; the light is transformed into parallel light via a convergent lens, then reflected to a short focal lens via the galvanometer, and the parallel light is converged to a photovoltaic cell panel via the short focal lens; corresponding electric signals are generated and the electric signals pass through a subsequent processing circuit, and light energy is collected and converted into electric energy as the working energy of the passive end; a second signal source loads the signals on a galvanometer driver and generates a control signal for the galvanometer, vibrates and makes the angle of a return light beam change with the signals, and modulates the return light beam inan OOK format; and the light beam returns along the original way, and is reflected to a plano-convex lens by the splitter; and the plano-convex lens converges the light beam to a detector, and the light beam is processed by an active end signal processing module and then upstream communication is completed.

Description

technical field [0001] The invention relates to an energy and information composite transmission system that realizes full-duplex communication based on a vibrating mirror, and belongs to the technical field of laser communication. Background technique [0002] The available frequency bands of traditional radio frequency communication are limited, and intensive application of radio frequency signals can easily cause mutual interference, so traditional radio frequency communication is not suitable for a large number of concentrated applications. Wireless laser communication is a technology that transmits signals on laser beams to realize communication. It has the advantages of strong anti-interference ability, large transmission capacity, good confidentiality, convenient maintenance, and low cost. It is very suitable for short- and medium-distance wireless communication. Therefore, in the construction of dense links, the application advantages of wireless laser communication ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problem of low transmission rate of the traditional modulation recovery structure in wireless laser communication and inconvenient power supply at the passive end, and propose a composite energy and information transmission system based on vibrating mirrors to realize full-duplex communication

Images