Multifunctional Smart Meter is a high-tech product developed in recent years on the basis of electronic meter. Its composition and working principle are very different from the traditional induction meter. The intelligent electronic meter is mainly composed of electronic components, its working principle is through the real-time sampling of user power supply voltage and current, and then use special electric energy meter IC Processing of sampled voltage and current signals, and converted into electrical energy and pulse output is proportional to the final processing, control through the microcontroller, display for electric pulsequantity and output.

We usually get smart metering of electricity when the A/D converter makes the pulse number called pulse constant, for intelligent electric meter, which is a more important constant, because the number of A/D converter pulse generated in a unit of time, will directly determine the meter measuring accuracy. The design principle of the current smart meter mostly adopts a A/D converter, but also some users of intelligent electric meter manufacturers with more households sharing a A/D converter, this measurement can only power the time to line up, will inevitably cause the decline of measurement accuracy, this work should be paid attention to the features of intelligent the meter smart meter not only adopted the design of electronic integrated circuit in the design selection, coupled with remote communication function, can connect with computer and the software control, so compared with the induction meter, smart meter no matter in the performance or operation function has a great advantage.