The smart monitoring system installed on the ceiling ensures that the equipment is completely out of the reach of residents. Its core technology uses advanced laser scanning solutions, which excel in protecting privacy: it only captures the depth information of the human body contour, never collects facial features or any personal biological data, and builds a solid barrier for the privacy of the elderly. The system has strong environmental adaptability and can operate accurately regardless of strong light interference or completely dark environments (including all-black scenes). The core functions include real-time motion tracking, regional headcount statistics, and intelligent warnings for dangerous behaviors (such as leaving the bed, climbing, falling, abnormal suspension, staying overtime, etc.), and the accuracy of human recognition is as high as 99.5%. A single device can effectively cover a large space of 80 square meters (about 860 square feet) and chase up to 20 people in real time. Use lidar technology to provide all-weather security protection for nursing homes.