Human body electromyographic signal virtual strike vibration feedback system and feedback signal generation method

Abstract

The invention relates to a human body electromyographic signal virtual strike vibration feedback system and a feedback signal generation method. The system comprises an electromyographic signal sensor, a vibration feedback device, a virtual reality glasses device, a virtual reality scene module and the like. The method comprises the steps of 1, constructing a virtual reality scene platform; 2, preprocessing electromyographic signals; and the like. The method has the superior effects that when a user executes a correct knocking posture, namely, a standard knocking posture is given in the earlystage of training, the user can obtain vibration feedback, which can linearly change along with the change of knocking force, by use of simple vibration feedback equipment under the driving of a corresponding vibration feedback algorithm, and in the training process, vibration feedback of corresponding characteristics due to knocking of different materials is generated, so that higher activity freedom degree and user experience are provided for the user.

Description

technical field [0001] The invention relates to the field of virtual reality, in particular to a multi-channel human body electromyogram (EMG, electromyogram) virtual percussion vibration feedback system and a method for generating feedback signals thereof. Background technique [0002] Percussion has always been the most common and popular form of musical expression in instrumental performance. As we all know, in order to proficiently master a percussion instrument, a sufficient condition is the need for long-term repetitive training, correct percussion posture and strength, and the formation of corresponding muscle memory and motor skills. [0003] With the development of virtual reality technology and the popularization of wearable devices, users are not restricted by factors such as traditional training venues, equipment, and on-the-spot teaching. Immersing in the virtual environment for percussion performance is an effective solution, thanks to Scene Programmability ，...

AI Technical Summary

Problems solved by technology

[0005] 1. When it comes to the posture discrimination of the human body, the accelerometer placed on the surface of the limb can be used to study the physical motion state of the human body. However, when the percussion behavior of the human forelimb is specifically studied, the vibration generated by the collision will affect the fixed limb. Accelerometers cause a lot of noise, so acceleration is not a very reasonable solution in this scenario

Similarly, computer vision can also be used to capture human behavior from light propagation, but due to the complexity of behavior, light diffraction, interference from ambient light signals, etc., it is still challenging in the specific implementation stage

In addition, using too many sensing devices also has a negative impact on user experience

[0006] 2. When it comes to vibration feedback to the user, the commonly used vibration feedback model is a sinusoidal attenuation model with damping. By adjusting the amplitude coefficient, attenuation rate and sinusoidal frequency to simulate different material characteristics, but with high fidelity The use of vibration feedback equipment and corresponding signal generator equipment is inevitable

[0009] None of the above-mentioned invention patent applications involves the generation method of virtual percussion vibration feedback signal of human body electromyographic signal

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