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 Haptic technology
 

Haptic technology

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haptic technology

haptic technology

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     Haptic technology Haptic technology Presentation Transcript

    • A SEMINAR REPORT ON “ HAPTIC TECHNOLOGY ” SUBMITTED IN PARTIAL FULFILLMENT FOR THE DEGREE OF BACHELOR OF TECHNOLOGY IN “INFORMATION TECHNOLOGY” BY “ANJALI A. SHAH” IT-3 UNDER THE GUIDANCE OF PROF.PRAKASH KHELAGE
    • OUTLINE
      • What is haptic technology?
      • Working.
      • Architecture.
      • Characteristic.
      • Application.
      • Advantages.
    • WHAT IS HAPTIC TECHNOLOGY?
      • Haptic technology , or haptics, is a tactile feedback technology that takes advantage of a user’s sense of touch by applying forces, vibration and motions to the user. 
      • It has been described as “(doing) for the sense of touch what computer graphics does for vision”.
    • What haptic provides us?
      • Improved Usability
      • Enhanced Realism
      • Restoration of Mechanical Feel
    • Haptic interaction loop with user and Virtual Environment
      • Human hand haptic virtual
      • device environment
    • WORKING BASIC BLOCK DIAGRAM OF HAPTIC ENVIORMENT
      • The above diagram consist of :-
      • Simulation engine.
      • Visual, auditory, and haptic rendering algorithms
      • Transducers.
      • Rendering.
    • HAPTIC ARCHITECTURE
      • .
      • The haptic rendering is divided into three main blocks :-
      • Collision-detection algorithm detects collision between objects and avatars in the virtual environment and yield information.
      • Force-response algorithms  computes the interaction between the virtual objects and avatars when a collision is detected.
      • Control algorithms   command the haptic device in such a way that minimizes the error between ideal and applicable forces.
    • DESIGNING FACTORS
      • Criteria For Designing Haptic Control System.
      • Free space must feel free
      • Solid virtual objects must feel stiff
      • Virtual constraints must not be easily saturated.
    • Haptic Device Control System
      • There are three control system to control haptic devices:-
      • Impedance control system -"displacement in -force out".
      • Admittance control system-"force in - displacement out".
      • Hybrid control system.
      • Adaptive control system.
      • Robust control system.
      • Optimal control system.
    • Several Guidelines For Designing Haptic And Tactile Feedback For Directed Movements:-
      • Maintain stimulus-response compatibility.
      • In normal viewing conditions, extra-visual feedback may not improve targeting performance.
      • The effects of feedback in multiple-target environments are not well understood.
      • The effects of feedback in multiple-target environments are not well understood.
      • Buttons on tangible objects can interfere with positioning.
    • CHARACTERISTICS
      • 1) Types Of Information Received
      • a) Tactile information- information acquired through
      • sensors in the skin .
      • b) Kinesthetic information-information acquired through
      • the sensors in the joints.
      • 2) Types Of Forces
      • a) Forces due to object geometry.
      • b) Forces due to object surface properties, such
      • as texture and friction.
    • 3) Types of Haptic devices: 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.
    • HAPTIC DEVICE
      • To aid computer users who are blind or visually disabled or are tactile leaners.
      • It provides resistance to texture in computer images.
      • It provides single point,3D force-feedback to the user via stylus attached to a moveable arm
      1) 2)
    • 3) 4)
      • Cyber glove can sense th position and movement of fingers and wrist.
      • It can be used to manipulate virtual objects.
      • It is worn over Cyber Glove.
      • Exerts palpable forces on the real hand, creating illusion of touching.
    • APPLICATION
      • FOR THE VISUALLY IMPAIRED
      • GAMING APPLICATION
      • AUTOMOTIVE
      • VIRTUAL EDUCATION
    • ADVANTAGE :-
      • Digital world can behave like the real world.
      • Working time is reduced.
      • Medical field simulators allow would be surgeons to practice digitally.
    • DISADVANTAGES
      • The precision of touch requires a lot of advance design. 
      • Haptics applications require highly specialized.
      • hardware and considerable processing power and hence its complex.
      • Haptics projects rely on fixed installations of equipment and are not easily portable.
      • Debugging issues.
    • THANK YOU