发生紧急情况时,火灾报警和广播疏散系统是最先响应者(如消防或公安机构)向建筑内人员传送信息的主要途径。在紧急情况下,消防机构用广播疏散系统引导人们转移到安全的地点。除了火灾信息之外,这种系统还越来越多地用于提示建筑内的人员躲避其他类型的紧急情况,如炸弹恐吓、恶劣天气及其他严 In the event of an emergency, fire alarm and broadcast evacuation systems are the primary means by which the first responders, such as fire or public security agencies, transmit information to building occupants. In emergencies, fire agencies use a broadcast evacuation system to direct people to a safe place. In addition to fire information, such systems are increasingly being used to prompt people in buildings to evade other types of emergency situations such as bomb threat, bad weather and other