Research Of The Tactile Reproduction Of Water-droplet Falling On The Skin Based On Electrical Stimulation

Virtual reality combines visual,auditory and tactile sensory stimulation.Tactile plays an important role in improving user experience and creating virtual world.It can improve the real sense and immersion sense of virtual reality equipment.The function of touch is irreplaceable,even in some cases,it is the only way to obtain information.At present,the research on human vision and hearing has made considerable progress,such as face recognition,speech recognition and other technologies.However,tactile has been difficult to recover and has not developed for a long time due to the complex formation mechanism,difficult acquisition of surface touch information,and the correlation between touch and individual psychology and physiology.At present,the methods of tactile reproduction mainly include electric stimulation touch,vibration stimulation touch,pneumatic and jet stimulation tactile.Compared with other tactile reproduction methods,the electric stimulation tactile has the advantages of small volume,fast response,light weight and easy control.The difference between the electric stimulation tactile and the mechanical touch,pneumatic touch and jet tactile is that the electric stimulation can not only directly act on the tactile sensor itself,but also directly affect the nerve fibers to produce the nerve impulse to make people feel.Electrotactile is considered to be the most potential tactile display method in the future.Based on the principle of tactile perception of electrical stimulation,this paper takes the actual life scene:water drops drop on the skin as an example,and makes array flexible tactile reproduction device to simulate the real touch of water drops falling on the skin,obtains the stress data of skin surface by simulation,maps and transforms the pressure information and electrical information,and finally obtains the exciting voltage space by combining the skin impedance model established The array FPC electric stimulation board is made as the human-computer interaction panel to realize the reproduction of the water drop rupture process.The results of human-computer interaction experiment show that the experimenter can effectively identify the target touch,and verify the effectiveness and feasibility of the tactile reproduction method and the reproducing device based on electrical stimulation.