In addition to the metering function, the smart meter also has functions such as power information storage, two-way multi-rate metering, and user-side control. Unfortunately, domestic users are currently not able to enjoy these features. However, in the United States, these features have begun to be gradually realized. In the smart meter designed by the American electric company TXUEnergy, the power supply company's background automatically reads the power consumption data every 15 minutes. By collecting these data and analyzing it, the power supply company can accurately determine the user's power consumption status. In addition, the US power supply company has also opened a public electricity inquiry platform. By logging in to relevant websites, users can even accurately grasp the power consumption of each appliance in the home every time period. The intelligentization of smart meters is derived from its communication function. It not only communicates the power consumption and price signals to the users, but also informs the power supply unit whether there is power fluctuation, and even accurately detects the location of the power interruption. This is also a smart meter. Greater application prospects. Researchers at the University of California, Los Angeles, have designed a "power map" based on the "big data" theory, which combines demographic information, real-time user information, and geographic and meteorological information to create a In addition to clarifying the electricity consumption information of various social groups, the city grid planning can also be used as a basis for the priority transformation of power grid facilities in blocks with excessive power outages and severe overload. In Europe, the development of smart meters is not far behind. In order to manage a large number of household power consumption information in smart meters, Europe has launched a new management system - cloud system, the data read by smart meters is stored in the cloud, and users query more. For convenience. In the UK, IBM and telecom operator Cable & Wireless will jointly build a cloud computing network for the UK's future smart meter service, and call it "British Smart Cloud Energy." Japan, which experienced a power shortage after the nuclear power plant was shut down after a major earthquake, is also paying attention to smart meters, and energy-saving automatic technology has begun research and development. After the smart meter is connected with the household appliance, the power company will send energy-saving signals when the power supply is tight. After receiving the signal via the smart meter, the energy management system controller will formulate an overall energy-saving plan and control the equipment to achieve the energy-saving goal. . Siren Horn,Alarm Horn,Police Horn Chinasky Electronics Co., Ltd. , https://www.chinacctvproducts.com