Living-Alone Sleep Rhythm Anomaly Analysis | 独居者作息规律异常分析

Using a fixed camera in the living room or bedroom of a person living alone, the system continuously analyzes night video (typically 22:00-06:00) to detect lights-off time (when light sources turn off) and early-morning activity (human movement or body motion between 0-6 AM). It builds a personal historical baseline (e.g., average lights-off time and early-morning activity frequency over the past 7-14 days). | 通过家庭客厅或卧室固定摄像头，夜间（通常指22:00-6:00）连续分析视频，检测熄灯时间（光源关闭的时刻）、凌晨活动（0-6点期间的人体移动或肢体动作）。建立个人历史基线（如过去7-14天的平均熄灯时间和凌晨活动频率），当当前熄灯时间比基线延迟超过2小时，或凌晨活动频次显著增加（如超出基线2个标准差）时，输出'作息规律异常'提醒。