1

Haptic technology

2

by

Teja Muppalla

What is HAPTICS???The technology that interfaces human

interaction with external Environment

via touch ORIGINATED FROM GREEK WORD

“HAPTETHESAI”

3

4

OVER VIEW

Haptic Technology is any technology interfaces the user with a virtual environment via the sense of touch by applying forces ,vibrations, and/or motions to the user.

This technology is fairly new to society but it is being improved. A Haptic Interface is what lets users interact with the technology.

Haptic technology

5

Haptic are enabled by actuators that apply forces to the skin for touch feedback.

Haptic feedback use electromagnetic technologies such as vibratory motors, like a vibrating alert in a cell phone or a voice coil in a speaker, where a central mass is moved by an applied magnetic field.

The actual process used by the software to perform its calculations is called haptic rendering. A common rendering method uses polyhedral models to represent objects in the virtual world.

The job of conveying haptic images to the user falls to the interface device.

TECHNOLOGYHaptic interactions can be categorized

intothe different types of touch sensations a

usercan receive: Tactile feedback Force feedback

7

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.

8

FORCE FEEDBACK

It reproduces the directional forces that can result from solid boundaries.

E.g. the weight of virtual objects, etc.

9

Classification of Haptic Devices

Virtual reality/ Telerobotics based devices

i) Exoskeletons and Stationary device

ii) Gloves and wearable devices iii) Point-sources and Specific task

devices iv) Locomotion Interfaces Feedback devices i) Force feedback devices ii) Tactile displays

10

Exoskeletons large and immobile systems that

the user must attach him or herself to.

their large size and immobile nature allow for the generation of large and varied force information.

11

Gloves and wearable devices

The user can move naturally without being weighted down by a large exoskeleton or immobile device

12

Point-sources and Specific task devices

Single point of contactSpecialized for performing a

particular task.Restricts the device to perform

few functions

13

Locomotion Interface and full body force feedback

In a confined space, simulate unrestrained human mobility such as walking and running for virtual reality.

14

15

What sort of technology is Haptic?

Such technology that is considered to have Haptic attributes include;

RoboticsMedicineGamesVirtual Reality

16

Robotics

Robot hands can control senses such

as touch, pressure and

position. This is used

to reproduce human senses.

17

Games/Virtual Reality

Virtual reality provides users with a sense of touch to visual images. Game systems such as Nintendo

64, Playstation 2, 3 and Nintendo Wii provide users with shock feedback.

18

MEDICINEMedicine-Haptic interfaces for medical simulation may prove especially useful for training in minimally invasive procedures such as laparoscopy and interventional radiology as well as for performing remote surgery

Disadvantages

• Expensive• Haptic interfaces can only exert

forces with limited magnitude and not equally well in all directions

• haptic device position sensors have finite resolution.

19

CONCLUSION• The next important step towards

realistically simulated environments that have been envisioned by science fiction authors and futurists alike.

• Large potential for applications in critical fields as well as for leisurely pleasures.

• Haptic devices must be miniaturized so that they are lighter, simpler and easier to use.20

21

Touch can be distributed over space and time, recorded and broadcasted like streaming data

Future Vision

22Any Queries ??

?

23

Teja muppalla