Underwater IoT system based on blue LED visible light communication

Abstract

The invention discloses an underwater IOT (Internet of Things) system of VLC (Visible Light Communication) based on blue LEDs (Light Emitting Diodes). The underwater IOT system is characterized in that underwater devices, underwater sensors, underwater terminals or underwater gateways are used as node units; the underwater IOT system is formed by the multiple node units according to a certain network interconnection topological structure, and the VLC based on the blue LEDs is used as an information transfer means between every two node units; the network interconnection topological structure of the underwater IOT system comprises a basic chain type network, a daisy chain type network or an AdHoc network. In the underwater IOT system disclosed by the invention, a high-brightness blue LED is adopted as a light emitting unit carrying a bidirectional blue LED receiving and transmitting module, so that three problems of low underwater communication reliability, high cost and high-frequency modulation difficulty are solved; a silicon-PIN photodiode having high flexibility in a visible light wave band is adopted as a light receiving unit, so that the problems of difficulties in realizing high-speed response, low price and high reliability are solved; through the measures, a high-speed information interconnection IOT system is provided for devices and terminals in underwater movement and underwater operation.

Description

technical field [0001] The present invention relates to the technical field of underwater Internet of Things systems, in particular to an underwater Internet of Things system based on blue LED visible light communication. Background technique [0002] The Internet of Things is an important part of the new generation of information technology. It uses communication technologies such as local networks or the Internet to connect sensors, controllers, machines, people and things together in a new way, forming the relationship between people and things, things and things. Connected to realize informatization, remote management control and intelligent network. [0003] With the gradual deepening of human exploration into the ocean and underwater fields, scientific research and production activities such as ocean exploration, water environment monitoring, aquaculture, and fishing have more urgent needs for underwater information interconnection, and the underwater Internet of Thing...

AI Technical Summary

Problems solved by technology

Unlike the terrestrial Internet of Things, which mainly uses short-distance communication networking technology based on electromagnetic waves, the attenuation effect of water on electromagnetic waves determines that the underwater Internet of Things is not suitable for using electromagnetic waves as the core of Internet networking technology.

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