UNDERWATER_DATA_AND_AUDIO_TRANSMISSION_USING_LIFI_(4)[1].pptx

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1. VISVESWARAYA TECHNOLOGICAL UNIVERSITY “JnanaSangama”,Belagavi-590018 . MAIN PROJECT PRESENTATION ON “ UNDERWATER DATA AND AUDIO TRANSMISSION USING LIFI ” Submitted in partial fulfillment of the requirements for the degree of BACHELOR OF ENGINEERING IN ELECTRONICS ANDCOMMUNICTIONENGINEERING Submitted By ANUSHREE J K ( 4AI21EC007 ) MANU PATEL ( 4AI21EC042 ) NISHANTH GOWDA ( 4AI21EC050 ) NISHCHITHA M ( 4AI21EC051 ) Under the Guide of Dr.Kumudha T M.Tech ,Ph.d,MIE Mr.Rajappa H.S B.E., M.Tech , Professor, Dept. of ECE,AIT Asisstant prof essor , Dept. of ECE,AIT DEPARTMENT OF ELECTRONICS AND COMMUNCATION ENGINEERING ADICHUNCHANAGIRI INSTITUTE OF TECHNOLOGY ,CHIKAMAGALURU Under the reviewer of

2. UNDERWATER DATA AND AUDIO TRANSMISSION USING LIFI

3. INTRODUCTION LiFi (Light Fidelity) is a wireless communication technology that uses visible light to transmit data, providing high-speed, secure communication. Unlike WiFi , which relies on radio waves, LiFi operates through light, making it ideal for environments like underwater where radio signals weaken significantly. The project focuses on implementing LiFi for underwater communication, aiming to demonstrate both data and audio transmission using light. The communication system consists of two modules: a data transfer module and an audio transfer module. In the data transfer module, an Arduino Uno is used to send and receive data between a laptop and an LCD display via serial communication.

4. Continued…. The receiver captures the transmitted light data using a LiFi receiver and displays it on the LCD. The second module handles audio transmission, where sound is input through an audio jack and FM audio board, transmitted via LiFi , and played through a speaker. The project explores the potential of LiFi for underwater communication, showcasing its advantages in speed and reliability compared to traditional methods. The project utilizes visible light, which can penetrate water more effectively than traditional wireless signals, making LiFi suitable for underwater environments.

5. VLC(Visible Light Communication) VLC Overview : Visible Light Communication (VLC) uses visible light from LEDs to transmit data wirelessly, making it a key component of LiFi technology. 2. Working Principle : VLC works by rapidly modulating the intensity of light emitted from an LED, which is imperceptible to the human eye but can be detected by light sensors or photodiodes. 3. Data Transmission : The modulated light encodes data, which is transmitted over short distances and can be decoded at the receiving end using a LiFi receiver. 4. Spectrum Utilization : VLC operates in the visible light spectrum (400 to 700 nm), which is unlicensed and offers a much larger bandwidth compared to radio frequencies used in WiFi . 5. High Speed : VLC can achieve data transfer speeds up to several Gbps, far exceeding traditional wireless communication methods like WiFi .

6. 6. Dual Functionality : VLC can provide both illumination and communication simultaneously, utilizing existing lighting infrastructure like LED bulbs. 7. Security : VLC offers enhanced security since light cannot penetrate walls, limiting signal access to the room where it is used. 8 . Challenges : VLC requires a clear line of sight for communication, and the data transfer can be interrupted by physical obstructions or ambient light interference. 9 . Applications : VLC has applications in areas like underwater communication, indoor wireless communication, vehicle-to-vehicle communication, and internet access through LED lighting.

7. LITRERATURE SURVEY Serial No Title Author Year of Publication Description Advantages Drawbacks 1 Underwater Wireless Communication System using Li-Fi Technology A. Sharma, B. Patel 2023 This paper explores Li-Fi technology for real-time data transmission in underwater environments. It demonstrates the use of visible light communication to transmit video and audio data. High-speed data transmission, Low energy consumption Limited range due to light absorption in water, Signal interference in turbid water. 2 Real-Time Video Transmission using Li-Fi for Underwater Communication C. Lee, D. Kim 2022 The study focuses on the use of Li-Fi for real-time video transmission in underwater communication systems, providing a reliable method for surveillance and exploration. High data rate, Cost-effective Signal attenuation in deep waters, Needs line of sight for communication

8. 3 Next-Generation Underwater Optical Communication Using Li-Fi S. Zhou, H. Wang 2024 Proposes an advanced Li-Fi system for underwater optical communication, highlighting improved signal stability and reduced interference. Enhanced bandwidth, High-speed data transfer. Limited by water clarity, Needs precise alignment. 4 Development of LiFi System for Underwater Data Transfer M. Johnson, L. Nguyen 2023 This research presents a LiFi -based system designed for data transfer between submarines. It addresses the challenges of underwater communication using optical waves. Secure communication, Minimal latency Susceptibility to water disturbances, Higher complexity in setup.

9. Problem statement 1.Limited Penetration Depth of Light: Light waves, especially in the visible spectrum, have limited penetration depth in water due to absorption and scattering. 2.Attenuation and Scattering in Turbid Water: In turbid or murky waters, the scattering of light due to suspended particles significantly reduces the effectiveness of LiFi transmission 3. Alignment and Positioning of Transmitter and Receiver: Underwater environments often involve random movements and changes in orientation due to currents or external forces 4. Bandwidth Limitations and Data Rate Reduction: The underwater medium imposes on the available bandwidth and achievable data rates due to light absorption and scattering

10. 5 . Multi-Path Reflection and Distortion : Reflection of light signals from underwater surfaces leads to multi-path effects, causing signal distortion 6. Energy Efficiency and Power Consumption: Underwater LiFi communication systems require efficient power consumption due to the limited energy resources available to submerged sensors or devices, creating challenges in balancing power and signal strength.

11. METHODOLOGY Identify the requirements for the underwater communication system, including data transfer and audio transmission. Design the circuit schematic for the transmitter and receiver modules, including the Arduino Uno, LCD display, power supply, audio jack, and FM audio board. Set up the transmitter module with Arduino Uno, connecting it to the laptop for serial data input. Program the Arduino to read data from the laptop via serial communication and display it on the LCD. Implement the LiFi transmission mechanism using appropriate light-emitting components (e.g., LEDs) to transmit data.

12. Set up the receiver module with Arduino Uno, connecting it to the LiFi receiver components and an output speaker. Program the receiver Arduino to capture incoming data via LiFi and display it on the LCD. Integrate the audio transfer module by connecting the audio jack to the transmitter and the FM audio board to the receiver. Program the audio transfer mechanism to receive audio signals through the audio jack and transmit them via LiFi . Ensure that the receiver module can play the received audio through the connected speaker.

13. Objectives To design and develop a system for underwater data transmission.using Li-Fi technology. 2. To achieve the data transmission both in text and audio signals 3. To obtain reduced interference in data transmission. 4. To optimize the utilization without compromising efficiency of available bandwidth

14. Hardware and software components ● Atmega 328 Controller ● Power Supply ● Transistors ● Rectifier ● LED’s ● PCB Board ● Cables and Connectors ● Audino UNO ● LDR Sensor

15. Flow chart

16. Transmitter System BLOCK DIAGRAM

17. Receiver System

18. WORKING The transmitter module receives data input from a laptop through serial communication. The Arduino processes the input data and displays it on the connected LCD. The data is then transmitted using LiFi technology, converting the data into modulated light signals. The receiver module, equipped with a LiFi receiver, captures the incoming light signals. The Arduino in the receiver processes the captured signals and decodes the transmitted data.

19. The decoded data is displayed on the LCD in the receiver module. Simultaneously, audio signals from an audio jack are fed into the transmitter module. The audio signals are transmitted via LiFi alongside the data signals. The receiver module captures the audio signals through the FM audio board. The audio is then played back through a connected speaker, completing the communication process.

20. RESULT: Fig. 1 The final model of Aqualink . Fig.2 Transmitter side model which contains switches and a keyboard for sending messages

21. Fig. 3 Receiver side model which contain the LiFi receiver to receive message Fig. 4 The pH value is obtained by the pH sensor which i n stalled in the water. and the same message is sent to the receiver end.  

22. Fig. 5 The pH value is obtained by the pH sensor which is installed in the water. and the same message is sent to the receiver end. Fig.6 Temperature that is collected from the sensor, displays the temperature on the transmitter side and sends the same message to the receiver end and displays the same.

23. Fig. 7 Image display senders text message and passed it to receiver. Fig.8 text message from sender displayed at receiver C.

24. FUTURE SCOPE Enhance data transmission rates by utilizing advanced modulation techniques for LiFi communication. Implement error correction algorithms to improve the reliability of data transmission in challenging underwater conditions. Explore the integration of additional sensors, such as temperature or depth sensors, for enhanced environmental monitoring. Investigate the use of different types of light sources, such as laser diodes, to increase transmission distance and efficiency. Develop a user-friendly mobile application to facilitate data monitoring and control over the communication system.

25. Expand the audio transfer capabilities by incorporating higher quality audio codecs for better sound fidelity. Implement real-time data analytics features for monitoring underwater conditions, improving decision-making for marine research and exploration. Conduct further research on the effects of various water conditions on LiFi transmission to optimize the system for diverse underwater environments.

26. CONCLUSION The Underwater LiFi communication project successfully demonstrates the feasibility of using light- based communication for data and audio transmission in underwater environments. By leveraging Arduino Uno as the microcontroller, the system effectively handles both data input from a laptop and audio signals from an audio jack, showcasing versatility in communication capabilities. The integration of LCD displays in both transmitter and receiver modules provides real-time feedback, enhancing user interaction and system monitoring. 4. Overall, the project contributes valuable insights into the potential of LiFi technology in underwater environments and highlights opportunities for innovative applications in this emerging field.

27. Thank Y ou