Optimal Head-mounted IMU Placement for Heart Rate Detection Using Ballistography

Area of Science:

• Biomedical Engineering
• Wearable Technology
• Cardiovascular Monitoring

Background:

• Continuous heart rate monitoring is crucial for detecting cardiovascular issues.
• Traditional electrocardiogram (ECG) methods lack comfort for daily use.
• Ballistocardiography (BCG) offers a non-invasive sensing alternative.

Purpose of the Study:

• To introduce a novel head-mounted BCG method using inertial measurement units (IMUs).
• To optimize IMU sensor placement on the head for enhanced accuracy.
• To improve the feasibility and accuracy of wearable BCG devices.

Main Methods:

• Utilizing IMU-based BCG sensors placed on the head.
• Investigating various IMU mounting locations on the head.
• Applying signal processing techniques to mitigate noise and artifacts.

Main Results:

• Identified optimal IMU placement for improved BCG signal quality.
• Demonstrated the feasibility of head-mounted BCG for heart rate detection.
• Showcased the potential for robust heart rate monitoring despite movement.

Conclusions:

• Head-mounted IMU-based BCG is a promising non-invasive method for continuous heart rate monitoring.
• Sensor placement and signal processing are critical for accuracy in wearable BCG.
• This approach offers a comfortable and convenient alternative to traditional ECG monitoring.