Lightweight long-distance underwater LED wireless optical communication transmission system

Abstract

A light-weight long-distance underwater LED wireless optical communication transmission system comprises a transmitting terminal used for transmitting optical signals. The transmitting terminal comprises a data acquisition module; a transmitting end electro-optical conversion module; a transmitting end transmission optical fiber; A transmitting terminal with the watertight mechanical structure which comprises a transmitting terminal photoelectric conversion module, a transmitting end digital signal processing module, a digital-to-analog conversion module, an amplifier, an LED array, a DC biasmodule, a transmitting end lens assembly. A receiving end is used for receiving the optical signal transmitted by the transmitting end, comprises: a receiving end with a watertight mechanical structure, which is arranged underwater, and comprises a receiving end lens assembly, a detector, a transimpedance amplifier, a balancing and filtering module, an analog-to-digital conversion module, a receiving end digital signal processing module, a receiving end electro-optical conversion module, a receiving end transmits the optical fiber, a receiving end photoelectric conversion module, and a data recovery module. The optical fiber is light in weight, the system is suitable for long-distance transmission, cannot be interfered by electromagnetic interference, and is accurate in signal transmission.

Description

technical field [0001] The invention relates to an underwater communication system, in particular to a lightweight and long-distance underwater LED wireless optical communication transmission system. Background technique [0002] 72% of the earth's surface is covered by oceans. With the in-depth development of ocean resources, the communication between humans and oceans has become increasingly frequent. More and more underwater detection equipment, monitoring platforms and sensors have been put into use, so there is an urgent need for high-speed wireless communication technical support. However, due to the skin effect of the ocean, the existing wireless communication technology cannot be applied to long-distance ocean communication. As the main communication method of underwater communication, acoustic wave communication, although the loss in seawater is very small, but the side lobe is large during transmission, the directional directivity is not strong, and the communicat...

AI Technical Summary

Problems solved by technology

Each module of the existing underwater communication system is connected by cables. The underwater transmitting end or receiving end of the communication system must be in a place close to the signal acquisition end or data recovery end in the ocean. If the distance is far, due to Cables are used for intermediate signal transmission, and long-distance transmission will be subject to a lot of electromagnetic interference, which will cause interference to the transmission signal

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