เกมการแข่งขันด้วยสัญญาณตอบสนองจากสัญญาณไฟฟ้ากล้ามเนื้อแบบเรียลไทม์ระหว่างสองผู้เล่น

Abstract

Biofeedback is a technique that uses electronic devices to monitor and measure changes in the body’s activity. It is used to train patients to control their bodily functions to achieve balance and improve their health conditions. Currently, biofeedback systems utilize electromyography (EMG) signals from muscle activities for medical applications such as tracking muscle activities and physical rehabilitation to aid in muscle recovery. It is also being used to develop control systems for prosthetic limbs. This research aims to develop a biofeedback system that acquires EMG signal data in real-time to generate control commands for a competitive game between two players, where the difficulty level can be adjusted according to the user's physical strength. Surface electrodes are placed on the Flexor Carpi Ulnaris (FCU) and Extensor Carpi Radialis (ECR) muscles to acquire EMG signals of the arm. These signals are used to control a character within the game. The results of the experiment show that the appropriate threshold level for playing the competitive game is between 80% to 90% of maximum voluntary contraction (MVC) level, and the delay time of the system ranges between 13 to 16 milliseconds. Therefore, it can be concluded that a competitive game using biofeedback signals can provide responsive feedback to the user and be adjusted to their physical ability level.