Research on Design and Key Technology of New Generation Multi-MCUs Smart Meter

In response to the growing contradiction between the growing demand for grid business and the backwardness of smart meter functions, the International Organization for Legal Metrology (OIML) has redefined the International Recommendation IR46 for electric power meter. In this context, multi-MCUs smart meter design and key technology are researched. Firstly, from the business scenario, business application and business model, the application requirements of smart meter in the new situation are systematically analyzed. On this basis, the function design and hardware design of multi-MCUs smart meter are carried out. Aiming at the key technology of hardware design, the hardware architecture adopts loosely coupled modular structure, including four modules: metering MCU, management MCU, identification MCU and negative control MCU; based on the measurement SOC, the data sampling promotion technology such as high-frequency sampling and self-checking are analyzed; the multi-mode heterogeneous communication technology is analyzed for the application requirements of ubiquitous Federation of things (UFO). In view of the key technologies of software development, the lightweight embedded operating system is analyzed in detail, and two advanced application technologies of non-intrusive load identification technology and ordered charging technology are introduced, and a unified information interaction model is constructed. Finally, the development of smart meter prototype is developed, and the performance and function of multi-MCUs smart meter are tested based on the experimental environment.