Position detection sub-station for coal-mine down-hole personnel

The utility model relates to a position detecting substation for underground personnel in a coal mine, which comprises a central processor connected with a low-frequency signal transmitting module and a low-frequency signal receiving module. The low-frequency signal transmitting module is used for causing 315MHz low-frequency signals to cover an identification card reading area; the low-frequency signal receiving module is used for receiving the 315MHz low-frequency signals transmitted back by an identification card in the card reading area; the central processor is connected with a high-frequency signal transmitting module and a high-frequency signal receiving module through a signal line; the high-frequency signal receiving module is used for receiving the card number of the identification card transmitted back by a 2.4G high frequency module of the identification card in the card reading area; the central processor is also connected with a memory and is used for verifying and processing the information tra