Exploring the CIM-based framework for safety hazards identification in urban renewal

Urban renewal plays an important role in building a liveable, green, resilient, smart, and cultural city. Urban security problems are inevitable in urban renewal. How to prevent and control urban safety hazards from the source is a topic worth exploring. City information modelling (CIM) platform is an operational platform for new urban infrastructure construction, which provides important support for urban physical examination and urban security through real-time dynamic monitoring of safety hazards in urban renewal process by Internet of Things (IoT) sensor devices. IoT technology has characteristics like sensing, interconnection, and intelligence. Based on the city safety problems, this paper proposes the method of urban renewal safety hazards identification model and analyses the urban renewal types and the objects of safety hazards, builds a framework from IoT sensing, monitoring, and warning to hazards management (URSHF-CIM). And then based on IoT, this paper builds the urban renewal safety hazards recognition framework which contributes to research on city security and the IoT application in the future.