Real-time positioning method for construction site based on BIM model

The invention relates to a real-time positioning method for a construction site based on a BIM model, and the method is characterized in that the method comprises the steps: carrying out the sequential numbering of positioning modules with a positioning function, enabling the positioning modules to be located in safety helmets of workers, and enabling number values located in the same constructionsite to form a set; on the premise that a positioning module exists in the construction site, any selected construction site is obtained and judged with the number value set until the construction site falls into the number value set, and a number value corresponding to the construction site is obtained; transmitting a control signal to the positioning module corresponding to the number value; and when no signal is returned, repeatedly communicating with other numbers in the number value set until the electric signal returned by the positioning module is received, obtaining the position information of the constructio