・Acquires the daily behavior and state of care-requiring persons as wave information including heartbeat, respiration, and body movement, with a non-wearable type piezoelectric sensor and microwave sensor, thus acquiring information as a unique behavior and biological activity through the waveform analysis.
・Networks sensors placed in each indoor place with low-power radio, and grasps the location and activity status of the care-requiring persons, as well as reports real-time occurrence of abnormal situations such as fall, respiratory halt, and cardiac arrest, etc.
・Based on accumulated behavior and biological activity information, detects changes in physical condition and activity level of the care-requiring persons and provides a notification to the caregivers.