Working principle of intelligent electric meter

The working principle of smart meters is the same as that of ordinary meters (Baidu is recommended for more details), but functions such as digital display are added. As for remote control, it is very simple. The background system uses the control power supply (usually DC) to increase the control circuit to realize the basic control of the current smart meter, background meter reading, accounting and so on.

Smart meters are different from traditional meters. IC card meters can be networked and read meters remotely. Remote meter reading is the most fundamental significance of smart meters. As for how to realize remote meter reading, there are many specific realization modes of smart meters.

One,

The largest number of power carrier meters used by Guodian is connected to the collector through wires, and the collector uploads the readings to the remote meter reading server through GPRS, so the resident users of State Grid can basically check the daily electricity consumption at home through handheld power. Most of the manufacturers who provide such solutions and products are directly cooperating with Guodian.

Second,

The second kind of smart meters, which are widely used in large buildings, are connected to the network through the 485 bus, connected to the collector, and then converted into TCP/IP network cables, which are directly copied to the server. Many manufacturers provide this system, such as Hangzhou Ancient Pigeon Information, Guangzhou Baicheng, and directly integrated buildings.

Third,

At present, many youth apartments, white-collar apartments and serviced apartments are using wifi meters. These meters are directly connected to the wifi remote meter reading server in the apartment, and of course there are gprs meters, which are used when smart meters are not used much. This usage can be directly installed by buying an electric meter online, and then directly used through the app.

The fourth is the future real Internet of Things smart meter, NB-IoT meter, which is an immature product that Huawei and operators are pushing. That is, the smart meter is directly connected to the remote reading server through the NB-IoT network.

At present, it is developing well. Internet companies are involved in this field. For example, the rental payment product of Hangzhou Guge Information () can collect the household electricity bill in advance on the premise of copying the smart meter. Deduct the electricity bill by the day, remind if it is not enough, and cut off the electricity if it overdraws to a certain amount, just like the mobile phone bill.