大空间建筑 ,尤其是存在遮挡和环境干扰时 ,现行的火灾探测技术将难以正常发挥效用 ,无法解决灵敏度与可靠性之间的矛盾 ,大空间建筑早期火灾的探测已成为火灾探测领域的一个世界性难题 ,各国火灾科学及消防科技工作者对此都十分关注。本文对大空间建筑火灾探测中存在的问题进行了分析 ,并介绍两种图像型大空间建筑早期火灾智能探测报警技术 Large space buildings, especially in the presence of obstructions and environmental interference, the current fire detection technology will not be able to function properly, can not solve the conflict between sensitivity and reliability, detection of large buildings early fire has become a world of fire detection Sexual difficulties, fire science and firefighters all over the country are very concerned about this. This paper analyzes the problems existing in the large-scale building fire detection and introduces two kinds of early warning technology of intelligent fire detection and alarm for large space buildings