CoMBaT

Introduction to Corrective Myo Band Badminton Trainer: (CoMBaT)

Purpose of using CoMBaT

CoMBaT helps novice badminton learners in visualizing muscular effort and swing of the arm. It provides real-time corrective visuals and haptic feedback. This feedback acts as a positive reinforcement for playing the shot, enabling the trainees to apply the correct technique, and learn the skill.

Corrective Myo Band Badminton Trainer

Portion of the video taken from here

How CoMBaT Functions ?

CoMBaT is a Myo band-based system, which processes and plots the sensor data patterns of badminton shot for reviewing the muscular effort and arm swing. The system primarily consists of a wearable device, the Myo band and CoMBaT application running on a computer.

The Myo band wirelessly provides EMG signals and Internal IMU data in real-time to sense muscular activity and acceleration experienced by the arm, respectively. CoMBaT application running on the computer enables the visualization of the sensor data patterns of muscular effort and arm swing. It also provides a marker-based visual feedback, and instructs the haptic vibration motor of the Myo band. The CoMBaT application interacts with the Myo band using the Myo API provided with the software development kit (SDK) from Thalmic Labs.

Visualization: The visualization shows a plot of the EMG and IMU sensor data patterns recorded when the shot was played by the trainee. These patterns are plotted along with the reference patterns so the trainee can gain better insight for corrective measures to be taken while playing the shot.

Feedback: The feedback is provided to the trainee immediately after the execution of the shot. Feedback is generated by processing and comparing patterns from this data against the reference patterns. Two types of feedback are given to the trainee. The first is a set of two colored markers, one for the effort applied at the correct instance and the other for the adequate swing of the arm. A correct use of the technique is shown by the marking turning green and red otherwise. The Myo band also has an onboard haptic vibration motor which is used to provide haptic feedback by varying the length of vibrations according to the to the correct usage of the technique for muscular effort and swing of the arm.

Project Team:

• Ashutosh Raina

• Lakshmi T. G.