Intelligent distance measurement device and method based on Internet-of-things and 3D modeling

The invention discloses an intelligent distance measurement device and method based on the Internet-of-things and 3D modeling, and relates to the technical field of transformer substation primary equipment area field operation safety management. The device comprises a terminal, a range finder, a modeling module, a display module, a range finding module and an alarm module, wherein the range finder, the modeling module, the display module, the range finding module and the alarm module are arranged on an operator or an operation vehicle; the method comprises the following steps: modeling: establishing a three-dimensional model of substation equipment; displaying: displaying the three-dimensional model through a display device of the terminal; ranging, wherein the range finder acquires the minimum distance information between the range finder and the transformer substation equipment; alarming, when the distance information is lower than an alarm threshold value, the range finder generatesan alarm, and the termin