Oct 16, 2009

Seminar on Haptic Technology

Haptic Technology is a technology that adds the sense of touch to virtual environment. It's interfaces allow the user to feel as well as to see virtual objects on a computer, and so we can give an illusion of touching surfaces, shaping virtual clay or moving objects around. Haptic technology is like exploring the virtual world with a stick. If you push the stick into a virtual balloon push back. The computer communicates sensations through a haptic interface –a stick, scalpel, racket or pen that is connected to a force-exerting motors. You can also Subscribe to FINAL YEAR PROJECT'S by Email for more such projects and seminar.


Seminar on Haptic Technology

With this technology we can now sit down at a computer terminal and touch objects that exist only in the "mind" of the computer. By using special input/output devices (joysticks, data gloves, or other devices), users can receive feedback from computer applications in the form of felt sensations in the hand or other parts of the body. In combination with a visual display, haptics technology can be used to train people for tasks requiring hand-eye coordination, such as surgery and space ship maneuvers.


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


Architecture of Haptic feedback

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 while in the case of the machine system, the above mentioned functions are performed by the encoders, computer and motors respectively.

Haptics system includes

· Sensor(s).
· Actuator (motor) control circuitry.
· One or more actuators that either vibrate or exert force.
· Real-time algorithms (actuator control software, which we call a “player”) and a haptic effect library.
· Application programming interface (API), and often a haptic effect authoring tool.

Haptic is the future for online computing and e-commerce, it will enhance the shopper experience and help online shopper to feel the merchandise without leave their home. Because of the increasing applications of haptics, the cost of the haptic devices will drop in future. This will be one of the major reasons for commercializing haptics.

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