Sensing movement: microsensors for body motion measurement

Area of Science:

• Biomedical Engineering
• Physiology
• Sensor Technology

Background:

• Body posture and motion recognition are vital physiological functions for maintaining balance.
• Man-made motion sensors are increasingly used in biomedical applications like diagnosing balance disorders and assessing energy expenditure.

Purpose of the Study:

• To review state-of-the-art sensing components for body motion measurement.
• To describe the human vestibular system as a natural motion sensor.
• To elaborate on various man-made inertial sensors, including conventional and emerging types.

Main Methods:

• Review of scientific literature on motion sensing technologies.
• Description of the anatomy and working principles of the human vestibular system.
• Analysis of different man-made inertial sensors based on their sensing mechanisms.

Main Results:

• The human vestibular system serves as a natural model for motion sensing.
• Conventional solid-state and emerging non-solid-state motion sensors are detailed.
• Man-made sensors offer lower cost and enhanced intelligence for motion measurement.

Conclusions:

• Man-made motion sensors are pivotal for understanding body dynamics.
• These sensors are expected to significantly advance basic research and clinical diagnostics in biomedical systems.
• The integration of intelligent, cost-effective sensors will drive future innovations in healthcare.