Coal mine three-machine personnel intelligent protection system and method

The embodiment of the invention discloses a coal mine three-machine personnel intelligent protection system and method. The coal mine three-machine personnel intelligent protection system comprises one or more extensions placed at a coal mining site, a host, wherein each of the extensions comprises a human body detecting component, an extension alarm component, an extension main control module, and an extension wireless communication module; the human body detecting component, the extension alarm component, and the extension wireless communication module are all connected with the extension main control module; the host is placed in a fully mechanized coal mining driver cab, and the host comprises a host main control module, a host alarm component, and a host wireless communication module;the host alarm component and the host wireless communication module are all connected with the host main control module; and the extension wireless communication module and the host wireless communication module are wireless