Abstract: The present disclosure discloses a time service and positioning network system for an underground chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.

Abstract: The present disclosure discloses a time service and positioning network system for an underground chain-shaped large space in a coal mine. The system adopts a base station-level network internal time synchronization method which takes an optical fiber time service as a main part and takes a satellite time service as an auxiliary part to construct a time service and positioning network system with an unified time within the ad-hoc network base stations, based on the ad-hoc network base stations linearly arranged in the underground chain-shaped large space in the coal mine. Through the network construction, the network stabilization and the network application, the system unifies the time reference of the base station-level network and improves the positioning accuracy of the network application by utilization of the base station-level network internal time synchronization method.

Abstract: A device integrated with payment function and collection function, includes a smart memory card and an intelligent terminal. The intelligent terminal is adapted to generate a secure transaction management instruction, send the secure transaction management instruction to the smart memory card and notify an execution result of the secure transaction management instruction; to interact with a bank side system via a remote communication network; to interact with user via a user interface; to interact with another device in near field communication mode; to process transaction instruction, generate a secure transaction application instruction and send the secure transaction application instruction to the smart memory card; and to notify an execution result of the secure transaction application instruction. The smart memory card is adapted to execute the safe transaction management instruction and the safe transaction application instruction.

Abstract: A radio frequency identification device includes: a radio frequency interface, a core control unit and a universal storage interface; the core control unit is adapted to receive radio frequency identification instruction from another radio frequency identification device within predetermined range or portable terminal apparatus through the universal storage interface or the radio frequency interface, to perform corresponding radio frequency identification processing according to the radio frequency identification instruction and the current operation status of the devices, and to switch the operation status of the device when the instruction is operation status switching instruction; the radio frequency interface is adapted to realize information interaction between the core control unit and the another radio frequency identification devices within predetermined range; the universal storage interface is adapted to realize information interaction between the portable terminal apparatus and the core control uni