Engaging the sense of touch...

1. HAPTIC TECHNOLOGY
Submitted by:
Anchika kumari
B.Tech Vth Sem(CS)

2. INTRODUCTION
Haptics’ is a technology that adds the sense of touch to
virtual environments.
Haptic technology refers to technology that interfaces the
user with a virtual environment via the sense of touch by
applying forces, vibrations, and/or motions to the user.
When virtual object are touched, they seem real and
tangible.

3. Haptic=Touch=Connection
• Derived from Greek word “haptikos” means able
to come in contact with”
• HAPTIC :also known as
force-feedback technology
• Haptic technology has the
ability to boost realism by the
addition of a third sense
called touch.

4. Generation of haptic
• First generation: electromagnetic technologies
produce a limited range of sensations
• Second generation : touch-coordinate specific
responses
• Third generation : delivers both touch-coordinate
specific responses and customizable haptic effects
• Fourth generation : pressure sensitivity, i.e. how
hard you press on a flat surface can affect the
response

5. Basic System Configuration
4
3
2
4 3
2
1
1
End effector
Hand
Actuators
Muscles
Sensors
Virtual object
MachineHuman
Computer
hapticsSensors

6. Feedback
• Haptics is implemented through different
type of interactions with a haptic device
communicating with the computer.
• These interactions can be divided
into two category:
Tactile Feedback
Force Feedback.

7. Types of Feedback
Tactical feedback Force feedback
• Refers to the sensations felt by the
skin.
• It allow users to feel things
• Eg: temperature, vibrations etc.
• It reproduces the directional
forces that can result from
solid boundaries.
• Eg: weight of virtual objects.

8. Haptic Devices
• It allow users to touch, feel
and manipulate 3-D objects
in virtual environments.
• Haptic device are input-
output device.

9. 1.Phantom
• providing a 3D touch to the
virtual objects
• provides 6 d.o.f
• when the user move his finger,
then he could really feel the
shape and size of the virtual
3D object that has been
already programmed.
• It works monitoring the
position of user fingertip or
hand by optical encoder

10. 2.Cyber Grasp
• The Cyber Grasp system fits
over the user's entire hand
like an exoskeleton and adds
resistive force feedback to
each finger
• Allows 4 d.o.f for each finger
• Adapted to different size of
the fingers
• Located on the back of the
hand

11. Computer and video
games:
 Disney Research
Pittsburg has
Shown off a technology
called “Surround
Haptics” that bring
real life experience in
video gaming and film
watching

12. Medical & Military
Stroke Patients
• Patients interact with virtual
worlds by feel.
Army
• Military Training in virtual
environment.

13. Electronics
Robotics Mobile devices-
• Haptic technology
is also widely used in
teleoperation, or telerobotics.
Tactile haptic feedback
becoming common in
cellular devices.

14. Future application
• The Design Research Lab
in Berlin, Germany has
developed a haptic feedback
glove designed specifically for
blind users to improve texting
capabilities.
• The Lorm glove allows blind
users to text by tapping
various sensors, and to receive
text via vibrations.
• Text for blind

15. Touch to feel the virtual world
• Interaction Research group at
Microsoft Research Redmond
developing through
user touch and feel objects
inside the virtual world
• flat touch screen convey depth,
weight, movement, and shape
• moving a finger on the screen,
the user can interact with on-
screen 3-D objects and
experience different force
responses that correspond to
the physical simulation.

16. Advantages
 Working time is reduced.
 Communication is centered through touch and the
digital world can behave like the real world.
 Increase confidence in medical field.
 With haptic hardware and software designer can feel
the result as if he/she were handling physical objects.

17. Disadvantages
 Higher cost.
 Large weigh & size
 From point of algorithm, output is not saturate.
 The precision of touch require a lots of advance
design.

18. Conclusion
• Touch plays a huge role in the way we perceive our
surroundings and also how we interact with them.
Haptics technologies have come a long way in bringing
this technology into reality.
• Currently limited to consumers.
• Future generations of mobile devices and game console
accessories will implement more haptic feedback.
• Increasing applications of haptics the cost of the haptic
devices will drop in future.
• This technology brings us one step closer to virtual
world.

19. References
• https://haptics.lcsr.jhu.edu/Research/Tissue_M
odeling_and_Simulation
• http://www.mpb-
technology/dof/application.html
• http://www.informit.com
• http://sciencedaily.com
• http://www.electronic.howstuffworks.com
• http://wikipedia.com