What is Haptic Technology (with ppt)
Haptic technology is one that interfaces the user with a virtual environment via the sense of touch by various methods such as applying forces,vibrations etc.This sort of stimulation may be used to assist in the creation of virtual objects, for control of such virtual objects, besides enhancing the remote control of machines and devices.The technology is flourishing largely and promises to have wide reaching applications and the significance it has at present proves the fact that haptic technology is going to be an unavoidable constituent of the next generation.Similar to touch or tactile sensors, haptic devices are capable of measuring bulk or reactive forces that are applied by the user, but the difference lies in the fact that touch or tactile sensors are capable of measuring the pressure or force exerted by the user to the interface.
Though these being the facts, improved accuracy and richness in haptic rendering will require suitable progress in our understanding of how to represent and render "psychophysically and cognitively germane attributes of objects", algorithms and also specialty hardware such as the physics engines, to perform real-time computations.Haptics is considered to be the future of online computing, and will enhance the shopper's experience by allowing them to feel the merchandise at home.Due to the fact that haptic technology is becoming popular day by day,the cost of haptic devices will fall in future.This will eventually lead to the commercialisation of haptics.Many new haptic devices will thus be sold to industrial companies,and consequently haptics will soon be a part of a person’s normal computer interaction.
Talking about the applications this technology can contribute would be like picking a drop from the sea.Believed to bring about a revolution in the world of technology,haptics ensures vital applications in various fields.Citing an example,the invention of haptics proves priceless in the field of medicinal studies as the sense of touch is critical in the field of medical studies and training.Medical training has never been so effective and interactive that medical students really get a "hands-on" experience before actually starting to interact with patients.In the field of dental training too,the same methodology is applied.The limitation of haptics in this field is that the students won't get a chance to deal with real life scenarios such as a bleeding in the teeth that may occur while consulting,which therefore implies that a dental student needs to acquire a good part of his knowledge and experience while actually consulting a real patient.With a haptic interface it brings the dreams of blind and visually impaired to life in a various ways.For example,by this technology,it makes possible a blind person to play computer games,learn mathematical courses via the sense of touch.The technology is also making impact in the field of consumer electronics.Some years back,a TouchWare desktop was invented which brings in the sense of touch to windows.By this method,a user can select menus and options by sliding through the screen and as you move from one menu to the other,small pulses will be felt at your fingertips,as when you move your fingers across the keys of a piano.These are a very few among the many applications as I had mentioned in the beginning of this paragraph.
But as with any technology or any thing for that matter,haptics too is a curate's egg having some limitations as well.One of the main limitations of haptic technology is its incapability in applying or rendering the desired force or impedance due to the following reasons : According to science,an ideal haptic is supposed to render no impedance while moving across free space and a little impedance while brought in contact with an object.But due to the inertia and friction present in the machine parts of the devices used for haptic interaction,this logic is not possible.Haptic interfaces cannot exert force equally well in all the directions and can only apply forces with a limited magnitude and consequently,haptic devices are not ideal force transducers.The next big issue is that haptic algorithms operate in discrete time while the users operate in continuous time.The avatar representing us on the screen will therefore always lag behind the avatar's actual continuous time position by a little amount.The biggest challenge in implementing the technology is the fact that a huge investment will be required if the interaction between the user and the desired object is to be made precise and satisfying.Thus to make it commercially viable,it may take some time.
For the technology to move beyond today's state of the art,it needs to negotiate some technological and commercial barriers.By this,in future,haptics will prove to be one of the revolutionary inventions which may help take the mankind to the next level by enabling increasingly appealing interaction with remote or virtual objects,by allowing museum visitors feel artifacts those previously could only be seen with the eyes,drastically produce new product geometry,doctors train on a virtual environment without having to risk the life of a patient,so on and so forth.Though the technology still ies in its infancy,it seems that a vast unexplored,untouched commercial and intellectual area remains obscure which adds excitement and tempts tech enthusiasts take up the topic for study and exploration.By making correct interferences about the various properties concerned,we can hopefully get apt solutions to all the queries that remain unaswered.Day by day more and more innovations are brought into the field and the equation is getting clearer as time progresses.
A detailed description on what it actually is,how it works,the commonly used devices for interaction with the virtual environment,applications,limitations and its future vision can be found in the textfile,the link of which is provided below.Also for those who are planning to take a seminar on the topic,especially students,a powerpoint presentation too is provided.The link is given below :
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© 2013 Arun Sivaraj