院外急救是整个城市和地区应急防御功能的重要组成部分,随着交通事故、火灾、环境污染和各种工伤等人为事故的不断增加,地震、洪水、暴雨、以及海啸、台风等自然灾害的不断发生,往往给人类带来极大的伤亡。这就需要城市防御体系共同救援[1],一个协调的救援体系能使受灾造成的损 Out-of-hospital first aid is an important part of the emergency defense function of the entire city and region. With the continuous increase of man-made accidents such as traffic accidents, fires, environmental pollution and various work injuries, natural disasters such as earthquakes, floods, torrential rains, tsunamis and typhoons continue Occurred, often bring great human casualties. This requires a joint rescue of the urban defense system [1], a coordinated rescue system can make damage caused by the disaster