An intelligent helmet applicable to a wearable patrol system belongs to the field of detection. Based on a standard safety helmet in an electric power system, a microcomputer processing unit, a control operation unit, an outward expansion module, multiple types of sensor detection modules and a communication antenna are designed in the helmet; and detection of an environment temperature, an equipment temperature, sound information, oxygen content information and video information, as well as a function of indoor person positioning can be achieved. The wearable helmet is characterized in that under a WIFI environment, through a positioning method of fingerprint positioning, a target position is obtained through comparison of signal characteristics and fingerprint information needed by positioning; through machine vision, inertia motion measurement and WIFI positioning technologies, accurate positioning in an indoor environment with a complicated structure can be achieved; and motion traces of operators can be tracked accurately, and operation task execution of the operators who reach wrong working positions can be avoided. The helmet can be widely applied to patrol and management fields of electric equipment.