火警探测技术并不是新事物,早在美国国内战争时期热探测器就已出现。到了70年代,随着对火灾时烟雾致命作用的认识,烟雾探测器开始普及。据1973年美国国家消防委员会的报告认为,火灾时吸入烟雾致死的人数远远超过被火焰烧死的人数,是导致火灾死亡的最主要的因素之 Fire detection technology is not new, as early as the United States during the civil war heat detectors have appeared. By the 1970s, smoke detectors began to gain popularity as awareness of the deadly effects of smoke in the event of a fire broke out. According to a 1973 report by the National Fire Board, the number of people lethal by inhalation of smoke during a fire far outnumbered by the number of people who died of fire was the most important factor in the death from fire