High-precision distance measurement and alarm device for preventing external damage of power transmission line

The utility model provides a high-precision distance measuring and warning device for preventing external damage of a power transmission line. The high-precision distance measuring and warning device comprises a first positioning terminal (1) and a second positioning terminal (2), wherein the first positioning terminal (1) is fixedly mounted on a cab; the second positioning terminal (2) is fixedly mounted at the tail end of a crane arm; the first positioning terminal (1) and the second positioning terminal (2) have the same structure, are connected through a communication interface, and comprise a main control board formed by an STM32 single-chip microcomputer system, and a GNSS module connected with the main control board and used for receiving and transmitting satellite data to complete positioning; the 4G communication module is used for positioning through a reference station; and the Bluetooth communication module is used for transmitting inertial navigation data. 本实用新型提出一种输电线路防外破高精度测距及告警装置，包括在驾驶舱上固定安装的第