Virtual force feedback interaction system and method based on myoelectricity evaluation

Abstract

The invention relates to a virtual reality interaction technology, in particular to a virtual force feedback interaction system and method based on myoelectricity evaluation. The system comprises an electrode sensor, an initial parameter generation unit, an electromyographic signal acquisition module, an electrical stimulation module, a time division multiplexing module and an electromyographic signal-force regression model processing unit, a virtual interaction event triggers an initial parameter generation unit to generate an initial electrical stimulation signal parameter, and an initial electrical stimulation signal is sent to an electrode sensor to stimulate muscle passive contraction to generate passive force; the electromyographic signal acquisition module receives a human body mainpower electromyographic signal acquired by the electrode sensor in real time through the time division multiplexing module; the virtual force is input into an electromyographic signal-force regression model processing unit to predict and evaluate the virtual force, further parameters of the electrical stimulation signal are dynamically adjusted to output a new electrical stimulation signal, and the virtual force feedback is adjusted to be consistent with the force given by a real object. According to the system, feedback adjustment can be carried out on the virtual force, and the immersion ofa virtual scene is enhanced.

Description

technical field [0001] The invention relates to virtual reality interaction technology, in particular to a virtual force feedback interaction system and method based on myoelectric evaluation. Background technique [0002] With the development of science and technology, virtual reality (Virtual Reality) technology has been widely concerned and applied, especially in games, film and television, education, medical treatment and other aspects have broad prospects. VR technology gives users the most realistic feeling by simulating the real world, making people feel immersive. At the same time, VR technology provides the perception functions possessed by human beings, including hearing, vision, touch, etc., which can greatly improve the immersion in the virtual world. At present, VR has been able to provide us with an extremely realistic virtual world, but when we try to reach out and touch these virtual objects, the sense of reality brought by VR is instantly shattered, because...

AI Technical Summary

Problems solved by technology

At present, VR devices at home and abroad mainly have the following three deficiencies in the realization of force feedback interaction: 1. The development of interactive feedback technology that integrates vision and hearing is relatively mature, but in vision, haptic, and even visual, auditory, and haptic The interactive feedback technology of fusion processing needs to be improved urgently; Second, the realization of force feedback is mainly through traditional sensor vibration body surface or through mechanical structure to transmit force. In the "powerful" stage, it is impossible to finely provide force feedback with a specific strength, that is, the strength of the force feedback generated by the existing electrical stimulation methods on the human body cannot be controlled, and it is inconsistent with the force given to people by objects in the real world, which greatly reduces virtual stimulation. The sense of immersion in the scene; 3. Today’s force feedback electrodes often use silicone patch electrodes, which often face poor contact and easy to fall off, and are not suitable for popularization and application

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