Haptic technology


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Haptic technology

  1. 1. HAPTIC TECHNOLOGY Submitted by: Anchika kumari B.Tech Vth Sem(CS)
  2. 2. INTRODUCTION Haptics’ is a technology that adds the sense of touch to virtual environments. Haptic technology refers to technology that interfaces the user with a virtual environment via the sense of touch by applying forces, vibrations, and/or motions to the user. When virtual object are touched, they seem real and tangible.
  3. 3. Haptic=Touch=Connection • Derived from Greek word “haptikos” means able to come in contact with” • HAPTIC :also known as force-feedback technology • Haptic technology has the ability to boost realism by the addition of a third sense called touch.
  4. 4. Generation of haptic • First generation: electromagnetic technologies produce a limited range of sensations • Second generation : touch-coordinate specific responses • Third generation : delivers both touch-coordinate specific responses and customizable haptic effects • Fourth generation : pressure sensitivity, i.e. how hard you press on a flat surface can affect the response
  5. 5. Basic System Configuration 4 3 2 4 3 2 1 1 End effector Hand Actuators Muscles Sensors Virtual object MachineHuman Computer hapticsSensors
  6. 6. Feedback • Haptics is implemented through different type of interactions with a haptic device communicating with the computer. • These interactions can be divided into two category: Tactile Feedback Force Feedback.
  7. 7. Types of Feedback Tactical feedback Force feedback • Refers to the sensations felt by the skin. • It allow users to feel things • Eg: temperature, vibrations etc. • It reproduces the directional forces that can result from solid boundaries. • Eg: weight of virtual objects.
  8. 8. Haptic Devices • It allow users to touch, feel and manipulate 3-D objects in virtual environments. • Haptic device are input- output device.
  9. 9. 1.Phantom • providing a 3D touch to the virtual objects • provides 6 d.o.f • 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. • It works monitoring the position of user fingertip or hand by optical encoder
  10. 10. 2.Cyber Grasp • The Cyber Grasp system fits over the user's entire hand like an exoskeleton and adds resistive force feedback to each finger • Allows 4 d.o.f for each finger • Adapted to different size of the fingers • Located on the back of the hand
  11. 11. Computer and video games:  Disney Research Pittsburg has Shown off a technology called “Surround Haptics” that bring real life experience in video gaming and film watching
  12. 12. Medical & Military Stroke Patients • Patients interact with virtual worlds by feel. Army • Military Training in virtual environment.
  13. 13. Electronics Robotics Mobile devices- • Haptic technology is also widely used in teleoperation, or telerobotics. Tactile haptic feedback becoming common in cellular devices.
  14. 14. Future application • The Design Research Lab in Berlin, Germany has developed a haptic feedback glove designed specifically for blind users to improve texting capabilities. • The Lorm glove allows blind users to text by tapping various sensors, and to receive text via vibrations. • Text for blind
  15. 15. Touch to feel the virtual world • Interaction Research group at Microsoft Research Redmond developing through user touch and feel objects inside the virtual world • flat touch screen convey depth, weight, movement, and shape • moving a finger on the screen, the user can interact with on- screen 3-D objects and experience different force responses that correspond to the physical simulation.
  16. 16. Advantages  Working time is reduced.  Communication is centered through touch and the digital world can behave like the real world.  Increase confidence in medical field.  With haptic hardware and software designer can feel the result as if he/she were handling physical objects.
  17. 17. Disadvantages  Higher cost.  Large weigh & size  From point of algorithm, output is not saturate.  The precision of touch require a lots of advance design.
  18. 18. Conclusion • Touch plays a huge role in the way we perceive our surroundings and also how we interact with them. Haptics technologies have come a long way in bringing this technology into reality. • Currently limited to consumers. • Future generations of mobile devices and game console accessories will implement more haptic feedback. • Increasing applications of haptics the cost of the haptic devices will drop in future. • This technology brings us one step closer to virtual world.
  19. 19. References • https://haptics.lcsr.jhu.edu/Research/Tissue_M odeling_and_Simulation • http://www.mpb- technology/dof/application.html • http://www.informit.com • http://sciencedaily.com • http://www.electronic.howstuffworks.com • http://wikipedia.com