Research Paper-Journal of Emerging Investigators (JEI) “ A Literature-Based Comparative Analysis of IMU and Biosignal Accuracy by Sensor Placement”

Journal of Emerging Innovators (JEI)

This research paper is based on my Fall-Alert project

OVERVIEW: This study presents an analysis framework to compare the effect of sensor placement in wearable systems on the accuracy of fall detection and biosignal monitoring. The analysis showed that the sensor attached to the external auditory canal is the most suitable location for integrated health monitoring, as it satisfies both the signal stability of the inertial measurement unit (IMU) and the accuracy of biosignals. Based on existing verified data, we propose an ethically safe and scalable optimization approach prior to human experimentation.

SUMMARY

This study compared and analyzed the fall detection accuracy and biosignal measurement reliability according to wearable sensor placement. Five currently used wearable sensor locations (ear canal, behind the ear, cymba concha, wrist, and index finger) were selected, and a comparative analysis was conducted based on existing research data. The synthesis of existing research data showed that areas adjacent to the skull (ear canal, behind the ear) demonstrated high fall detection accuracy, whereas sensors attached to the wrist and index finger resulted in high wearing convenience but low detection reliability. In an integrated evaluation applying weights of 60% for fall detection and 40% for biosignal reliability, the ear canal sensor exhibited optimal performance in terms of balancing accuracy and wearing convenience. This also demonstrates that weighting technical accuracy and wearability can produce conflicting results. Furthermore, it suggests that the validity of the results needs to be enhanced in the future through human experiments with medical approval or advanced biomechanical simulations.

JEI Yeseul.2025.pages

Download PAGES • 1.79MB