INSTRUCTOR-DR.KIM

PRESENTED BY

VENKATA MANOJ VELUVOLU

AUTONOMOUS UNDER WATER VEHICLE

Why autonomous vehicle inventedWhat is going in under sea!To collect hydrological information!To collect information regarding mines!

To do surveys!To avoid feature destructions!

In short we call it as AUV An autonomous underwater vehicle

is a robot which travels underwater without requiring input from an operator

Battle space preparationAuv

What is Autonomous under water vehicle?

REMOTED OPERATED VEHICLE (RUVs)

Types of underwater vehicles

UNMANNED UNDER WATER VEHICLES Unmanned underwater vehicles some time

known as underwater drones, are any vehicles that are able to operate underwater without a human component.

Another name for Unmanned under water vehicles is Auv’s

Types of underwater vehicles

The first AUV was developed at the Applied Physics Laboratory at the University of Washington as early as 1957 by Stan Murphy, Bob Francois and later on, Terry Ewart.

The "Special Purpose Underwater Research Vehicle", or SPURV, was used to study diffusion, acoustic transmission, and submarine wakes.

Other early AUVs were developed at the Massachusetts Institute of Technology in the 1970s. One of these is on display in the Hart Nautical Galley in MIT.

Commercial uses• The oil and gas industry uses Auv’s to make detailed maps of the

seafloor before they start building subsea infrastructure; pipelines and sub sea completions can be installed in the most cost effective manner with minimum disruption to the environment.

Military uses• A typical military mission for an AUV is to map an area to

determine if there are any mines, or to monitor a protected area

for new unidentified objects. Research uses• Scientists use AUV’s to study lakes, oceans and ocean floors. A

variety of sensors can be affixed to Auv’s to measure the concentration of various elements or compounds.

There are as many 80 countries whose borders have the potential to be expanded under article 76 of the United Nations Convention on the Law of Sea(UNCLOS).

To make this claim valid every country need to do a subsea survey and accepted by UN(United Nations) .Time is 10 years to complete survey. Canada has got to complete survey from 2003 to 2013.

They can do using helicopters and icebreakers but it is as failure. In 2007,DRDC(Defence research & Development Canada) was

Tasked by Nrcan(National Resources Canada) for collecting data to support Canada’s UNCLOS claim.

DRDC suggested Autonomous under water vehicle for collecting information because they have a immense experience in AUV development.

12 days under ice-An Historic Auv Deployment in the Canadian High Arctic

This survey is named as Server Spur.To do this survey An AUV would require 1000

km round trip this is far greater than Auv’s range.

In dec 2008 ISE(International submarine engineering) was awarded a contract from Nrcan to build two AUV’s.

After Auv’s built some of the modifications include

• Extended range and underwater charging.• Long range homing and short range

localization• Variable ballast

Introduction

Pictures preesting the surevy through Auv

In this paper, a wireless transmission system used in unmanned surface vehicles is presented.

This test is performed in Yangtze river.According to different use and requirement

such as the ccd cameras transducers measuring depth and speed of the water, instruments for water quality sampling.

When usv’s operate both the control commands and collected information are transmitted by wireless data transmission.

Study on wireless data transmission of an autonomous water vehicle for ocean observation

According to the related policy issued by the RRD the radio frequencies between 915MHZ-928MHZ are distributed to the radio communication equipments .

The wireless communication base station(master station) can be built on the mother ship and the wireless communication terminals are carried on the usv’s.

The network configuration is fully duplex and can satisfy the requirement of point to multipoint wireless monitoring.

Structure of the Wireless data transmission system

Usv’s can carry different observation instruments or equipments according to their missions.

Formats of the output data from these instruments or equipments may be different.

multimodal data from different instruments or equipments must be converted into a uniform specification before transmission.

Data processing of boarded instruments

Three methods of data transmission.• Cycle transmission Each of usvs transmits their current data to

the mother ship at a definite interval.• Timing transmission An appointed usv transmits their current data

to mother ship at an appointed time.• Triggering transmission Usv initiatively sends a triggering request

and transmits the current data to the mother ship.

The control method of data transmission

Expirement of the wireless data transmission system

Pros-They are extensively used for

bathymetric surveys.Can carry out different instruments.Cons-Less charging capacity.Every time it needs to be monitored.

Pros and cons

International Submarine Engineering (ISE) Ltd.

 Kongsberg Maritime.Hydroid (now a wholly owned subsidiary

of Kongsberg Maritime)Bluefin Robotics

Companies manfacturinng Auv's in International Market

Any questions?