Overhead line protection area boundary safety early warning system

The invention relates to an overhead line protection area boundary safety pre-warning system, which relates to the field of boundary pre-warning, and comprises two groups of vertical rods, a plurality of first infrared transmitting devices, a plurality of second infrared receiving devices, a camera device, an electronic device, a power supply device, a control device and a power supply device, performing feature recognition on the image information to obtain construction machinery features, power line features and vertical rod features in the image information, determining a warning area below the boundary based on the power line features and the vertical rod features, and when it is detected that the construction machinery features enter the warning area, determining distance information between the top of the construction machinery features and the boundary, and determining the working frequency of the plurality of first infrared emission devices based on the distance information, and controlling the plural