Privacy-preserving room radar identifying sudden elderly fall events without intrusive optical video cameras.
When a person falls, the torso accelerates downward at high velocity (exceeding 2.5 m/s) followed by an abrupt cessation of movement near floor level. Micro-Doppler classifiers detect this unique kinematic signature within 300 milliseconds.
Unlike optical cameras that cannot be deployed in bathrooms or bedrooms due to privacy concerns, radar reflections capture only point clouds and Doppler velocity, preserving complete patient dignity.