Unverified92% confidenceDecision RuleTime unknown
PIR被动红外传感器对静止人体不敏感，只能检测移动物体，若需检测长时间静坐场景（如书房、卫生间久坐）应选择雷达式（毫米波）传感器或PIR+雷达双模融合方案
1
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92%
Confidence
Long-term
Relevance
-
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UnverifiedPIR被动红外传感器只能感应移动的热源，人静坐不动会被误判为无人而熄灯；卫生间、书房等久坐场景应选微波雷达感应（可穿透玻璃/薄板检测微动），或PIR+雷达双模方案89% similarUnverifiedPIR红外人体感应只能探测移动的温度物体，静坐或缓慢动作会导致误熄灭；需要在书桌、沙发等静止场景用，应选微波雷达感应或带手动常亮档的产品85% similarUnverifiedPIR红外人体感应只能感知移动的温度体，静坐或缓慢移动会误灭；如需长时间停留（如厕、哺乳）应选微波雷达感应或带手动常亮档的型号84% similarUnverifiedPIR被动红外感应器探测的是温差移动，横向穿过探测区最灵敏，径直朝向感应器走动灵敏度最低，安装时应让探测面正对人的行进路径侧向80% similarUnverifiedPIR被动红外传感器易被阳光、车辆热源、树叶晃动误触发，选带AI人形侦测(区分人/宠物/车辆)的型号可大幅减少无效推送和电池损耗79% similar
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