Based on the characteristics of fire in high - rise buildings , the papers introduces the work principle of scatter photoelectric style fire explorer , discusses the work courses of automatic alarm , and analyzed that the sense smoke explorer system with prolonged work procedure is much more reliable than that without prolonged work procedure in the fire automatic alarm . whats more the computer program graph for auto - alarm system is also worked out . 4figs . ， 5refs 依据高层建筑火灾性质和特点，介绍了高层建筑中用散射光式光电感烟检测器检测火灾的工作原理，讨论了自动控制报警的工作过程.分析比较了设有延时工作过程的感烟探测系统比没有延时工作过程的系统,火灾报警的可靠性大大增强.并编制了自动报警系统计算机程序框图,本文讨论的高层建筑中火灾的探测与自控研究，对于不同建筑结构和不同要求的火灾控制报警系统具有参考价值和社会经济意义.图5 .参5
