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Haptic Technology
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- 2. OUTLINE • Introduction • Definition •Technology • Working • Haptic devices • Applications • Disadvantages • Conclusion
- 3. INTRODUCTION Haptics , isthe 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.
- 4. HAPTIC??? Derived from greekword ‘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
- 5. 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
- 6. Haptic interaction loopwith user and Virtual Environment Human hand Haptic device Virtual environment
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- 8. HUMAN MACHINE Nerve Receptors Sensing Sensors BrainProcessing Computer Muscles Actuation Motor
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- 10. The application’s mainelements 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.
- 11. Design of HapticSystem Haptic 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.
- 12. Sensors: It is responsiblefor 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.
- 14. a) Devices thatallow 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:
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- 16. PHANTOM Developed by SensibleTechnologies It allows the user to feel the texture and shape of the virtual object It can model free floating 3 dimensional objects.
- 17. CYBERGLOVE Cyber glove cansense the position and movement of fingers and wrist. It fits over the user's entire hand and adds resistive force feedback to each finger.
- 19. Applications of Haptics Technology COMPUTER AND VIDEOGAMES CELLULAR DEVICES ASSISTIVE TECHNOLOGY for visually impaired MUSEUM DISPLAY
- 20. MEDICAL APPLICATION- Training,remote surgeryetc ROBOTICS Teleoperation, telerobotics ART AND DESIGN Graphics design,animation,real-time images
- 21. FUTURE VISION 1.Holographic Interaction Thefeedback 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
- 22. LIMITATIONS High cost involved Largeweight 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.
- 23. CONCLUSION Although haptic interfacedevices 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.
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