A study of the application of visual identification guide system in mega city's public space safety pre-warning system

Safety is one of the four elements of global sustainable development. At present, urbanization degree is increasing rapidly in China, which is threatening the normal operation of the city. Varies of public safety issue arise frequently, that initiates deeply social concern. With help of big data analysis and computer simulation experiment, this article analyses the crowd behavior patterns in the background of mega city's public space safety pre-warning system from the angel of the visual identification guide system. The form of the visual identification guide system in the public space and the presentation of warning and emergency identification are researched. Which has crucial practical significance for improving management and status of the public safety, and maintaining production, living, and sustainable development of the city.