Abstract: In order to dynamically reflect the fire safety status of the commercial complex in real time, the Internet of Things technology is used to establish a dynamic fire risk assessment model for the commercial complex. On the basis of the analytic hierarchy process, combined with the definition of fire risk, the assessment indicators are selected, the selected assessment indicators are classified dynamically and statically, and the classification indicators are quantitatively converted to make them a unified standard data, eliminating the previous data types due to different indicators. One- to- one correspondence between the monitored data and standard data through the Internet of Things technology is introduced into the fire dynamic evaluation model. The evaluation results dynamically change with the changes of the Internet of Things monitoring data, making up for the lack of node-style static response fire risk in the past. The result of an example shows that the method can accurately and quantitatively assess the fire risk of a commercial complex in real time and improve the dynamic management of fire risk in a commercial complex.

Key words: fire fighting, commercial complex, Internet of Things, analytic hierarchy process, dynamic evaluation