Underwater communication and monitoring are becoming more and more important for marine research, aquaculture, environmental observation, and keeping an eye on water quality. Conventional underwater communication techniques frequently encounter issues including restricted transmission range, elevated costs, signal degradation, and challenges in real-time monitoring. To get around these problems, an underwater communication system based on the Internet of Things (IoT) is suggested. The proposed system uses the ESP8266 NodeMCU as the main processing unit to gather and send data about the environment underwater. For long-range wireless communication between the monitoring station and the underwater sensor nodes, a LoRa SX1278 module is used. The system has a DS18B20 to measure the temperature of the water and a turbidity sensor to keep an eye on how clear or clean the water is. An OLED display shows the data that was collected, and it can also be sent to a remote monitoring system for more analysis. The system is made to work with cable connections underwater to make sure that sensors can talk to each other reliably. LoRa technology, on the other hand, lets sensors send data over long distances without using a lot of power. The use of IoT technology makes real-time monitoring, data access, and system efficiency better. The proposed system has many benefits, such as being able to monitor things in real time, needing less human input, being cost-effective, and using less energy. You can use it in a lot of different areas, like keeping an eye on water quality, doing marine research, aquaculture, and protecting the environment.This project shows that IoT technology can be used to communicate underwater in a way that is both effective and dependable. It also helps to improve smart environmental monitoring by overcoming the problems with traditional monitoring systems.
Dr.N.Sayavathi et al. (Wed,) studied this question.