The Design Of The Single Phase Smart Meter

This system mainly by the display module, keyboard module, clock module, storage module, communication module, the CPU module, CS5460A watt-hour meter chip module and front-end circuit regulate module components. Front-end circuit2mA/2mA recuperate module USES the current transformer and5A/2.5mA current transformer and precise resistance to achieve the conversion, and adopts captures the RC filter, and then used by Internet filtering better company’s new American electric power measure to achieve CS5460chip chip electric current, voltage and the measurement and transformation; Clock module USES DS1302clock chips for the system to provide the clock benchmark, storage module USES a system to provide data for AT24C16, storage; OCMJ4X8CM LCD display module, communication module with Max232chip, and by using the CPU module control AT89S52composition of all chip work, measurement, calculation power, sent to display modules and storage module for real-time display and storage, and through the standard232interface to PC PC synchronously displayed, and this watt-hour meter also has a GPIB address in order to power management system of power management.