Smart meters are a kind of meters that are developing rapidly. Users of traditional smart meters use IC cards to pay money to the power supply department, and the power supply department uses the electricity sales management machine to write the purchase amount into the IC card. The user holds an IC card, swipes a contactless IC card in the induction area, and can turn on the power supply and leave Kolor after power supply. When the remaining power of the meter is equal to the alarm power, turn off the power supply and give an alarm (or buzzer alarm). At this time, the user can restore power supply by swiping the card in the induction area; When the remaining power is zero, the power will be cut off automatically, and the user must pay the card again to buy electricity before resuming power use. The new smart meter realizes power supply by banks and networks, and users can purchase electricity through the business windows of power companies, cooperative banks, third-party power sales agencies and networks, which greatly facilitates users.
With the development of smart grid, the global demand for smart user terminals is increasing. According to statistics, in the next five years, with the construction of smart grids around the world, the number of smart meters installed worldwide will reach 200 million. Similarly, in China, with the progress of building a strong smart grid, customers' demand for smart meters will also increase significantly. It is conservatively predicted that the market demand is about 65.438+0.7 billion meters. Part of the funds allocated by the US government to upgrade the domestic power grid will be used to install smart meters in 13% of American households (180,000 households) in the next three years. In Europe, Italy and Sweden have completed the deployment of advanced metering infrastructure, replacing all ordinary meters with smart meters. France, Spain, Germany and Britain are expected to complete the comprehensive popularization and application of smart meters in the next 10 year.