HAPTIC TECHNOLOGY
(TOUCH THE VIRTUAL)
REPRESENTED BY
SAKSHI SALUNKHE
K.B.P.C.O.E

WHAT IS HAPTICS ?
o ‘Haptics’ is derived from the Greek word ‘haptikos’
which means – ‘being able to come into contact’.
o Haptics is the science of applying touch (tactile)
sensation and control to interact with computer
appllictaions.

o Generally computers typically only take advantage of one or two sensory
channels (sight and sound) to transmit information to people.
o Haptics promises to open this bottleneck by adding a new channel of
communication using the sense of touch.
o Haptics expands the notion of bidirectional communication between humans
and computers to include sensory feedback.
o Haptics=Touch=Connection

VIRTUAL REALITY
o Virtual reality is a form of human-computer interaction providing a virtual
environment that one can explore through direct interaction with our senses.

THE REAL WORLD
o User should be able to touch the virtual object and feel a
response from it.
o In order to complete the imitation of the real world one should
be able to interact with the environment and get a feedback.
o This feedback is called Haptic Feedback.

HAPTICS FEEDBACK
o Haptics is implemented through different type of interactions with a haptic
device communicating with the computer. These interactions can be
categorized into the different types of touch sensations a user can receive:
1) Tactile Feedback
2) Force Feedback

TACTILE FEEDBACK
o Refers to the sensations felt by the skin.
o It allows the user to feel things such as the texture of surfaces, temperature
and vibration.

FORCE FEEDBACK
o It reproduces the directional forces that can result from solid boundaries.
o E.g. the weight of virtual objects, inertia, etc.

HAPTIC TECHNONLOGY
o Haptic Technology is a tactile feedback technology which takes advantage of
the sense of touch by applying forces, vibrations, or motions to the user.
o A haptic device gives people sense of touch with computer-generated
environments, so that when virtual objects are touched, they seemed real
and tangible.

HOW IT WOKRS

o Basically a haptic system consist of two parts namely the human part and the
machine part.
o In the figure shown above, the human part (left) senses and controls the
position if the hand, while the machine part (right) exerts forces from the
hand to stimulate contact with a virtual object.
o Also both the systems will be provided with necessary sensors, processors and
actuators.

o In the case of the human system, nerve receptors performs sensing, brain
performs processing and muscles performs actuation of the motion performed
by the hand.
o While in the case of the machine system, the above mentioned functions are
performed by the encoders, computer and motors respectively.

HAPTIC DEVICES
o It allows users to touch, feel and manipulate 3-D objects in virtual
environments.

HOW ARE HAPTIC DEVICES DIFFERENT ?
o Common interface devices like mouse and joystick are only input devices. No
feedback.
o Haptic devices are input-output devices.

COMMONLY USED HAPTIC DEVICES

1. PHANTOM
o Provides a 3D touch to the virtual objetcs
o 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

2. CYPBER GRASP
o The CyberGrasp system fits over the user’s entire hand like an exoskeleton
and adds resistive force feedback to each finger.
o Adapted to different size of the fingers
o Located on the back of the hand

3. MAGNETIC LEVITATION HAPTIC INTERFACES
o A technology for feeling
sensation over total body

APPLICATIONS OF HAPTICS TECHNOLOGY
o Computer and video
games-Haptic feedback
is commonly used in arcade
games, especially racing
video games.
Disney Research, Pittsburg (DRP)
has shown off a revolutionary
technology called ‘Surrounded
Haptics’ that can bring real life
experience in video gaming and film
watching.

o Personal computers-
Apple’s MacBook and MacBook Pro
started incorporating a “Tactile Touchpad”
design.
o Mobile devices-
Tactile haptic feedback is becoming
common in cellular devices. Nokia
and prada implemented it using piezoelectric
sensor pads.

o Robotics- Haptic technology
is also widely used in teleoperation,
or telerobotics.
o Arts and design-
Haptics is used in virtual
arts, such as sound synthesis
or graphic design and animation

LIMITATIONS

FUTURE VISION
o 1. Holographic Interaction
The feedback allows the user to interact with a hologram and actually receive
tactile response using acoustic radiation pressure.
o 2. Medical Application
Use of a central workstation from which surgeons would perform operations
in various locations; with machine setup and patient preparation performed
by local nursing staff.
o 3. Textile Industry
User could study and feel texture and quality of material during the sale of
cloth through material.

CONCLUSION
o The next important step towards realistically stimulated environments that
have been envisioned by science fiction authors.
o Continued implementation of tactile devices to aid people with disabilities
will advance further
o Future generations of mobile devices and game console accessories will
implement more haptic feedback
o Still embryonic when compared to full fledged VR simulations

THANK
YOU