大学教学楼和中学的最大区别是'使用自主性'：学生晚自习、考研占座到深夜，照明管理从'定时开关'变成'按需供给'。
教室课桌面300lx（GB7793-2010同样适用高校）；自习区加装人体感应分区控制——有人常亮、无人缓灭；走廊夜间降至100lx保持安全底线。
我们给教学楼做的分区感应改造让空教室照明能耗下降62%，后勤处把数据直接写进了节能申报材料。
University buildings differ from schools in autonomy: students self-study deep into the night, so lighting shifts from scheduled switching to on-demand supply.
Desks 300 lx (GB7793-2010 applies to universities); study zones on zoned occupancy sensing — lit when occupied, gentle fade when empty; corridors at night dropped to 100 lx safety floor.
Our zoned-sensing retrofit cut empty-classroom lighting energy 62% — the facilities office cited the data in its energy-saving award filing.
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