Presentation on RF Based Wireless Under Water Communication

1. RF Based Underwater Wireless
Communication System
NAME: ROLL NO:
Shruti Ghag 37
Krishnabhashkar Jha 45
Arpana Khedekar 51
Submitted By
Under The Guidance:
Prof. S.K.SRIVASTAVA
Department of Electronics & Telecommunication
PILLAI COLLEGE OF ENGINEERING
New Panvel – 410 206
UNIVERSITY OF MUMBAI
Academic Year 2017 – 18

2. OUTLINE
 Introduction
 Literature Survey
 Methodology
 Input and Output Specification
 Performance Evaluation Parameter
 Hardware and Software Requirement
 Application
 References
 Acknowledgement

3. INTRODUCTION
 In communication system there are 2 types of technology:-
 Wired Communication .
 Wireless Communication.
 Wireless Communication :-
 Transmitting & Receiving data wirelessly.
 Electromagnetic waves & Acoustic waves.
 Factors affecting Electromagnetic waves :
 1.Multipath propagation
 2.Small bandwidth

4.  While wireless communication technology today has become part of our daily life.
 Research has been active.
 By using this wireless communication technology we can find underwater
information.
 Radio waves do not propagate with water.
 Underwater communication are characterized by large propagation delay.
 Acoustic waves have low bandwidth.
 It increases human knowledge and understanding of the world’s oceans
 The major discoveries of the past decades.

5. Literature Survey

6. Methodology
Block Diagram:
Transmitter:-

7. Receiver

8. Working
 8051 Microcontroller: Input from Diode, Battery, asm /c program, laser.
 Power supply: Generates constant power for 8051 microcontroller.
 HT12E: It is an encoder integrated circuit.It is mainly used in interfacing RF and
infrared circuits.
 RF module Tx & Rx: 433 MHz RF transmitter and receiver modules, small in
dimension.
 Motor Driver: The L293 and L293D are quadruple high-current half-H drivers. It
generates upto 600mA at 4.5V to 36V.
 Laser module: It produces a laser beam when current flows through the diode.

9. Description
 Microcontroller:
 Low power
 High-performance
 It is manufactured using Atmel’s high-density non volatile memory technology
 RF Module:
 RF modules are 433 MHz RF Transmitter and Receiver modules.
 Rx supply current: 3.5mA
 Rx IF frequency: 1MHz
 Wireless Camera:
 It transmit video & audio signal through radio band
 They are of two types:
• Analog wireless camera
• Digital wireless camera

10.  DC Motors:
 A DC motor is an electric motor that runs on direct current (DC) electricity.
 It’s operation is based on simple electromagnetism.
 RF encoder HT12E:
 Operating voltage is 2.4V~12V for the HT12E.
 HT12A/E: 18-pin DIP/20-pin SOP package.
 Low standby current: 0.1_A (typ.) at VDD=5V.
 Diodes(1N4007):
 Diodes are used to convert AC into DC these are used as half wave rectifier or full wave
rectifier.

11. Input & Output Specification
 Transmitter:-
 The output of the power supply which is 5v is connected to 20th pin of MC.
 Mirocontroller is connected to set of push button.
 Push buttons are Backward, Stop, Forward, Left, Right push buttons
 MC is also connected to the encoder HT12E.
 Receiver:-
 MC is connected to HT12D Decoder
 MC are connected to L293D.
 L293D are given to Motor 1 and 2.
 pins 3 and 6 of 2nd L293D are given to Motor 3.
 MC is connected to Transistor Q1 that drives laser

12. Performance Evaluation Parameter

13. Hardware and Software Requirement
Hardware
 Resistors
 Capacitors
 HT12E encoder
 AT89C2051 microcontroller
 Diodes (1N4007)
 RF Module
 Tx & Rx Antenna
 Transistor(BC547)
 L293D Motor Driver
 DC Motors
 Battery
 Laser light
 Led
Software
 Keil Software

14. Application
 Environmental Monitoring To Gathering Of Oceanographic Data
 Marine Archaeology
 Search And Rescue Missions
 Defence
 Pollution Control.
 Climate Recording.
 Ocean Monitoring .
 Detection Of Objects On The Ocean Floor Are Other Areas.

15. Reference
 Website:
 www.redtacton.com
 www.wikipedia.com
 www.howstuffworks.com
 Books:
 Basic electronics- B. Ram
 Digital electronics- R. P. Jain