haptic technology
TRANSCRIPT
HAPTIC TECHNOLOGY
Guided by:-Prof. CHANDAN PATRAProf. PRASHANT KUMAR DASH
Presented by :-
SUPRIYA KUMARI
ROLL NO: 121103
CSE-2
OUTLINE• Introduction
• Definition
• Technology
• Working
• Haptic devices
• Applications
• Disadvantages
• Conclusion
INTRODUCTION
Haptics , is the technology of adding the sensation of touch feeling to computers.
When virtual objects are touched, they seem real and tangible
Haptics refers to sensing and manipulation through touch.
The touching process can be made by humans,machines, or a combination of both.
HAPTIC???
Derived from greek word ‘haptikos’ meaning “ABLE TO COME INTO CONTACT WITH”
Haptics = Touch = Connection
Touch is at the core of personal experience.
Of the five senses, touch is the most proficient, the only one capable of simultaneous input and output
HAPTIC INFORMATION
Combination Of :
Tactile Information Refers to the information acquired by the
sensors connected to the body
Kinesthetic Information Refers to the information acquired by the
sensors in the joints
Haptic interaction loop with user and Virtual Environment
Human hand Haptic device Virtual environment
The application’s main elements are:
1) Simulation engine: responsible for computing the virtual environments behavior over time;
2) Visual, auditory, and haptic rendering: compute the virtual environment’s graphic, sound, and force responses toward the user;
3) Transducers: convert visual, audio, and force signals from the computer into a form the operator can perceive.
Design of Haptic SystemHaptic interface:
Consists of a haptic device and software-based computer control mechanisms. It enables human–machine communication through the sense of touch.
Actuator:
Vibrates the device in a specific pattern. The type of actuator will determine there solution and quality of the haptic effects.
Driver:
Part of the electrical design and is the bridge between the controller and the actuator.
Sensors:
It is responsible for sensing the haptic information exerted by the user on a certain object and sending these force readings to the haptic rendering module.
Haptic rendering:
The process of calculating the sense of touch, especially force.
Software:
The software generates the haptic waveforms and can reside on an applications processor, microcontroller, or integrated driver.
a) Devices that allow users to touch and manipulate 3-dimentional virtual object.
b) Devices that allow users to "feel" texture of 2-dimension objects.
Types of Haptic devices:
PHANTOM
Developed by Sensible Technologies
It allows the user to feel the texture and shape of the virtual object
It can model free floating 3 dimensional objects.
CYBERGLOVE
Cyber glove can sense the position and movement of fingers and wrist.
It fits over the user's entire hand and adds resistive force feedback to each finger.
Applications of Haptics Technology
COMPUTER AND VIDEO GAMES
CELLULAR DEVICES
ASSISTIVE TECHNOLOGY
for visually impaired
MUSEUM DISPLAY
MEDICAL APPLICATION-
Training,remote surgery etc
ROBOTICS
Teleoperation, telerobotics
ART AND DESIGN
Graphics design,animation,real-time images
FUTURE VISION
1.Holographic Interaction
The feedback allows the user to interact with a hologram.
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
3. Textile Industry
User could study and feel the texture and quality of materail during the sale of cloth through internet
LIMITATIONS
High cost involved
Large weight and size of haptic devices (especially wearable ones)
Haptic interfaces can only exert forces with limited magnitude and not equally well in all directions
Haptic device position sensors have finite resolution.
CONCLUSION
Although haptic interface devices are available, further improvements are needed to match the performance of the human user.
Tactile display is one of the most challenging technologies that needs to be developed in moving towards realistic haptic displays.
REFERENCES
www.immersion.com/haptics-technology/ http://electronics.howstuffworks.com/everyday-tech/haptic-
technology.htm http://en.wikipedia.org/wiki/Haptic_technology http://www.123seminarsonly.com/Seminar-Reports/
009/50525962-Haptic-Report.pdf