Safety early warning system for highway related construction area

The utility model belongs to the technical field of expressway electromechanical maintenance, and particularly relates to an expressway road-related construction area safety early warning system which comprises three infrared laser systems and a master control system. The three infrared laser systems and the main control system form a rectangle and are respectively positioned at four corners of the rectangle; wherein each of the infrared laser system and the main control system comprises a group of infrared laser transmitters, an infrared laser receiver and a Bluetooth module; the main control system further comprises a main control module, a wireless signal module and a sound-light alarm module; the main control module is used for receiving signals fed back by the plurality of Bluetooth modules and sending an instruction to the sound-light alarm module; and the sound-light alarm module gives an alarm after receiving the instruction. According to the utility model, the problem of frequent occurrence of traffi