主动红外对射入侵探测器由主动红外发射机和被动红外接收机组成，当发射机与接收机之间的红外光束被完全遮断或按给定百分比遮断时能产生报警状态的装置，叫主动红外入侵探测器。
候机楼采用了地面送风亭射流送风方式、地面排风方式及红外线对射探测器控制的排烟天窗。
Air terminals buildings adopt air supply tower, floor exhaust grillage and smoke exhausting skylight controlled by infrared detector.
该工程结合大空间场所的特点，采用了地面送风亭射流送风方式、地面排风方式及红外线对射探测器控制的排烟天窗。
For large space, air terminal building adopts air supply tower, floor exhaust grillage and smoke exhausting skylight controlled by infrared detector.
候机大厅和办票大厅顶部设红外线对射探测器控制的排烟天窗。
Some smoke exhaust Windows controlled by infrared detectors are installed on the roofs of the waiting hall and check-in hall.
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