The sensor uses special optical fibers to detect continuous signal changes in the subtle vibrations and undulations generated during a person's heartbeat and lung respiration. Artificial intelligence technology is then used to analyze these changes to determine a person's heart rate, respiration, body movement, and sleep quality. The optical fiber micro-vibration sensing technology employs multi-structured special optical fibers and a regionalized ring optical path design to adapt to different sleeping positions and solve the challenge of sensing extremely weak signals.