haptic system presentation,teena
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GUIDED BY :- PRESENTED BY:-
Mr. Vikas Sharma Teena Sharma
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OUTLINE
INTRODUCTION
WORKING
HAPTIC RENDERING
CLASSIFICATION
HAPTIC DEVICES
APPLICATIONS IN VARIOUS FIELDS
LIMITATIONS
CONCLUSION
REFERENCES
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INTRODUCTION
Haptics is derived from the Greek word haptikoswhich means-being able to come into contact
(THE SCIENCE OF TOUCH)
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WHAT IS HAPTICS ?
HAPTICS-The technology that interfaces human interaction withexternal environment via touch.
The haptic system can SENSE and ACT on the environment whilevision and audition have purely sensory nature.
Understanding and enabling a compelling experience of Presencenot limited to "being there", but extended to "being in touch" withremote or virtual surrounding.
hap.tic (haptik) adj. of or having to do with the sense of touch;tactile (Websters New World Dictionary)
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The Technology
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TACTILE FEEDBACK
Refers to the sensations felt by the skin.
It allows the user to feel things such as the texture of
surfaces, temperature and vibration.
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FORCE FEEDBACK
It reproduces the directional forces that can result fromsolid boundaries.
E.g. the weight of virtual objects, inertia, etc.
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WORKING OF HAPTICS
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HAPTIC RENDERING
1) It is the technique to compute the interactionforces b/w the haptic interface and virtual
object.
2) Ensure that the haptic device correctly renders
such forces on the human operator.
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CLASSIFICATION
HAPTICSYSTEM
VIRTUALREALITY
/TELEROBOTICS
Exoskeletaldevices
Gloves andwearable
devices
Pointsources
HAPTICFEEDBACK
Forcefeedbackdevices
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VIRTUAL REALITY
Virtual reality is a form of human-computer interaction providing avirtual environment that one can explore through direct interaction withour senses.
On a computer, virtual reality is primarily experienced through two of thefive senses: sight and sound.
Virtual reality can be divided into:1)The simulation of a real environment for training and education.2)The development of an imagined environment for a game or interactivestory.
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IMPORTANCE OF VIRTUAL REALITY
Creation of anartifi- cial
environment
3-D Effect
Increasedrealism
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HAPTIC FEEDBACKBASIC BLOCK DIAGRAM
MAIN ELEMENTS1) Simulation Engine2) Haptic Rendering Algorithms3) Transducers
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HAPTIC DEVICES
It allows users to touch, feel and manipulate
3-D objects in virtual environments
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HOW ARE HAPTIC DEVICES DIFFERENT?
Common interface devices like mouse and joystick areonly input devices. No feedback.
Haptic devices are input-output devices.
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SOME POPULARLY USED HAPTIC INTERFACING
DEVICES..
Exoskeletons devices
Cyberglove Phantom.
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EXOSKELETONS DEVICE
These devices have hard outer shell that exists onmany creatures and they covers the users.
their large size and immobile nature allow for the
generation of large and varied force information.
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CYBERGLOVE
Devoloped byImmersioncorp.
1)It has 4 DOF for eachfinger.2)It adapted differentsize of fingers.3)In the absence of realobject,human is capableto feel that object withwearing Cyberglove.
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PHANTOM
1)Devoloped by Sensable Tech.
2) 6 DOF device.
3) Pen based interaction.
4) Serial linkage.
5) Force feedback.
6) The break-through performance
in the field of haptics.
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APPLICATIONS
Virtual reality
Tele-presence
Games & many more
Surgical simulation &Medical Training
Military applications.
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1.VIRTUAL REALITY
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2.TELE-PRESENCE
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3.GAMES
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4.SURGICAL SIMULATION & MEDICAL
TRAINING
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5.MILITARY TRAINING
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LIMITATIONS OF HAPTICS
Can only exert forces with limited magnitude.
Haptic systems arent ideal force transducers due toexistence of friction, inertia, backlash etc.
Haptic rendering algorithms operates in discrete timewhile users in continuous time.
The position sensors have finite resolutions.
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CONCLUSION
Future for online computing and e-commerce.
Enhance the shopper experience and help onlineshopper to feel the merchandise without leave theirhome.
Because of the increasing applications of haptics, thecost of the haptic devices will drop in future.
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REFERENCES
http://www.technologyreview.com
http://www.sensable.com
jks-folks.stanford.edu/papers/Haptic-Rendering.pdf
http://www.informit.com
http://www.wikipedia.com
http://www.google.com
http://www.informit.com/http://www.wikipedia.com/http://www.google.com/http://www.google.com/http://www.wikipedia.com/http://www.informit.com/ -
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THANK YOU
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