A wearable haptic reproduction apparatus and method integrating electrostatic force and vibration

Abstract

The invention relates to a wearable haptic reproducing device and method integrating electrostatic force and vibration, belonging to the field of virtual reality and human-computer interaction. A finger positioning unit, a finger speed detecting unit, a signal processing unit, an electrostatic force haptic reproducing unit, a vibration haptic reproducing unit, and a multimedia information terminal. The finger positioning unit and the finger speed detecting unit acquire the position information of the finger on the touch screen and the speed information of the finger in real time, the signal processing unit processes according to the position and speed information of the finger to obtain corresponding electrostatic force tactile and vibration tactile driving signal amplitude parameters. A driving signal is outputted to an electrostatic haptic reproducing unit and a vibration haptic reproducing unit, and a tangential electrostatic friction force and a normal vibration stimulus received by a finger are changed to generate electrostatic force and vibration haptic feedback. The invention has the advantages that two different kinds of tactile feedback can be simultaneously presented in plane tactile interaction, the tactile experience is enriched, and the reality of the tactile feedback is enhanced.

Description

technical field [0001] The invention belongs to the field of virtual reality and human-computer interaction, and in particular relates to a binary tactile reproduction device and method. Background technique [0002] With the development of science and technology, touch screen mobile devices are widely used in daily life and play an increasingly important role in the field of human-computer interaction. The emergence of tactile interaction technology can improve the immersion of human-computer interaction tasks and enrich human task experience, so it is widely used in medical, education, shopping, entertainment and other fields. It is an inevitable trend of technological development and a frontier issue of research to increase the function of tactile reproduction on touch screen mobile devices, improve the sense of reality of tactile reproduction, and better combine it with visual and auditory feedback methods. At present, there already exist some tactile reproduction devic...

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Problems solved by technology

[0003] Chinese patent "A device based on electrostatic force tactile reproduction" (publication number 102662477A), Chinese patent "A method and device for electrostatic force tactile reproduction applied to mobile terminals" (publication number 104199554A) and Chinese patent "A device based on switch Array multi-point electrostatic force tactile reproduction device and method" (publication number 104793746A) respectively discloses a tactile reproduction device and method based on electrostatic force. The device and method have certain flexibility and practicability, but only by changing The electrostatic attraction adjusts the tangential friction force on the finger, realizing the tactile reproduction of the perception dimension of the friction force on the surface of the object, and only when the finger moves, the electrostatic friction force can be generated, the tactile feeling is single, and the tactile feedback is less realistic. Conditional, poor portability

However, the vibration source directly fixed on the touch screen device will cause the mechanical wave generated by the vibration to attenuate during the propagation process, and the intensity of the vibration tactile sensation is not proportional to the output intensity, affecting the sense of tactile reality and causing a waste of resources

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