In large space building,several environment actors disadapt current fire detectors in early-stage fire detecting,such as width and scope of space,velocity of airflow,dust,temperature and humidity.

• 高大空间场所的各种环境因素(空间高度和广度、空气流速、粉尘、温度、湿度等)会给火灾探测和自动灭火带来困难。