本文报道了采用太阳能电池能源、实现现场无人监视、自动搜索林区火情、无线电自动传送火情信息的HLT-81型红外林火探测系统。该系统由探测仪和显示器两部分组成。探测仪放置在林区制高点上,定时搜索扫描,可监视数百至上千平方公里大面积林区。显示器放置在室内,接收由探测仪发回的无线电信号,经过信号识别和信息处理,用数码显示林区火目标的方位和距离参数,同时发出报警声响。 This paper reports the HLT-81 infrared forest fire detection system that uses solar energy, realizes unmanned surveillance on the spot, automatically searches for the fire in the forest area, and automatically transmits the fire information by radio. The system consists of two parts detector and display. Detectors placed in the commanding heights of the forest, regular search scan, can monitor hundreds of thousands of square kilometers of forest area. The monitor is placed in the room and receives the radio signal sent back by the detector. After signal recognition and information processing, the orientation and distance parameters of the forest fire target are digitally displayed, and the alarm sound is also emitted.