Electronic smart meter is a high-tech product developed on the basis of electronic meter in recent years. Its composition, working principle and traditional inductive kWh meter are very different. And the electronic intelligent meter is mainly composed of electronic components, its working principle is first through the user supply voltage and current real-time sampling, and then the use of a dedicated energy meter integrated circuit, sampling voltage and current signal processing, and converted to the pulse output proportional to electrical energy, and finally through the single-chip microcomputer. Processing and controlling the pulse display as electricity consumption and output.

The national smart energy meter is based on the research and development of electronic ammeter. Electronic meter overcomes the shortcomings of large data deviation, low efficiency of meter reading and anti-stealing in the past. On this basis, with the development of digital technology, intelligent meter has completely broken through electronic meter. It takes intelligent chip as its core, integrates database, operating system and bidirectional communication. Reader and other content, and build communication technology, computer technology and other platforms, to achieve automatic billing, power metering and timing functions. What are the functions of smart meters?

1. Support floating price
Compared with the traditional kWh meter, the intelligent meter is also a compileable meter, which not only meets the high accuracy of electric energy measurement, but also has the function of storing and measuring data. The electric energy information of time scale can be stored and measured according to the time difference previously set. Support real-time electricity price fluctuation, meet the different needs of the national grid and real-time electricity price measurement work.

2. Two-way measurement
Intelligent energy meter can guide such users to purchase and use electricity reasonably and economically according to the real-time electricity price, and reduce their electricity expenses for large distributed users such as energy storage equipment and power generation equipment. We should encourage every family to install low carbon and efficient energy storage equipment such as wind energy and solar energy. Encourage people to invest in low-carbon, economically efficient equipment such as cold, heat and electricity storage to reduce the pressure on the grid. Practice has proved that by using the bi-directional metering function of smart meters, the instant feedback of electricity consumption to users can effectively reduce the annual electricity consumption of a household by 13%-15%, reduce energy consumption by 3%-15%, and greatly enhance the environmental and social benefits.

3. Two-way communication function
Intelligent meter has built-in communication module, has the function of two-way communication, can realize the two-way communication between data center and communication network. Power supply enterprises can use smart kWh meter to inform users of information they are interested in, so that users can be informed in advance and ready to adjust their own electricity consumption. They can also regularly publish their electricity consumption to users, so that they can control their power consumption in real time. When adjusting the price of electricity, users can be informed in a timely manner, so that they can save electricity and reduce the pressure of the state.