Sound transmission system based on optical fiber signal energy transmission

Abstract

The invention discloses a sound transmission system based on optical fiber information energy transmission. The sound transmission system comprises a sound receiving unit, a signal processing unit and an electro-optical conversion unit which are arranged in a central station, a photoelectric conversion unit, an alternating current and direct current separation unit and a sound restoration unit which are arranged in a base station, and an optical fiber, the sound receiving unit converts the audio signal into an alternating current signal; the signal processing unit superposes the alternating-current electric signal and a direct-current electric signal generated by the direct-current source into an alternating-current and direct-current aliasing electric signal; the electro-optical conversion unit converts the AC / DC aliasing electric signal into energy light and signal light, and transmits the energy light and the signal light to a base station through an optical fiber; the photoelectric conversion unit restores the energy light and the signal light into alternating-current and direct-current aliasing electric signals, the direct-current separation unit separates alternating-current electric signals and direct-current electric signals, the direct-current electric signals are used for supplying power to active devices in the base station, and the alternating-current electric signals are restored into audio signals through the sound restoration unit. According to the invention, long-distance safe transmission and high-quality restoration of audio information are realized, and the application range is wide.

Description

technical field [0001] The invention belongs to the technical field of optical fiber sensing, and in particular relates to a sound transmission system based on optical fiber signal energy transmission. Background technique [0002] Optical fiber has both information transmission and sensing capabilities, and has excellent physical properties such as flexibility, light weight, high temperature and corrosion resistance, extremely low loss, passive, and anti-electromagnetic interference. Optical fiber sensing has shown great application potential. Optical fiber co-transmission technology, which has attracted much attention in optical fiber sensing, uses optical fiber to transmit signal light and energy light from the central station to the base station. The signal light is converted into an electrical signal by the photovoltaic device in the base station, and the electrical signal is transmitted to the active device in the base station to process the electrical signal. The ene...

AI Technical Summary

Problems solved by technology

[0003] For some special environments with strong magnetic fields and strong electric fields, as well as special occasions such as emergency rescue and disaster relief, island communications, and military communications, the current sound transmission system is generally complicated to build and high in cost, and requires a large number of laying wires and active devices. Security risks

Images