Bus system modular Internet of Things smart metering box

The invention discloses a bus system modular Internet of Things smart metering box, which comprises a box body and a bus, wherein the box body is internally provided with a data computing unit, a storage unit and a function module, through unified interface and protocol definition and source opening, barrier-free connection with the function module is realized, and each function module uses the relevant computing ability of the data computing unit and the storage resources of the storage unit based on the unified interface and protocol; and the bus comprises a power bus and a data bus, the data bus is used for corresponding relationship among the data computing unit, multiple data interfaces, the storage unit and the function module and performing secure encrypted communication based on a data processing unit. Through the above mode, the bus system modular Internet of Things smart metering box can guide development and installation of new modules, enhance compatibility, realize edge calculation in the meterin