The main types of smart meters are IC Card meter, user holds IC The power supply department will pay the power purchase. The power supply department will use the power sales management machine to write the power purchase amount into IC In the card, the user holds it IC Scratch in the sensing area and brush non-contact IC Card (Swipe abbreviation, the same below )，You can close the power supply and take the card away after power supply.When the remaining power in the meter is equal to the alarm power, the power is cut off and the alarm is triggered. (Or buzzer alarm )，At this time, the user can restore power by swiping the card in the induction area; when the remaining power is zero, the power will be automatically turned off, and the user must pay the power to purchase the power with the card again before the power can be restored.For residential electricity, when comparing with mechanical and electronic meters, it has the following advantages:

1、It has a variety of anti-powered functions, small starting current, no latent, wide load, low power consumption, straight error curve, good stability during long-term operation.Single-phase local fee-controlled smart meter

2、Beautiful appearance, small size, light weight and easy to install.

3、High accuracy: fully electronic design, built-in imported special chip, the accuracy is not affected by frequency, temperature, voltage, and high harmonics.

4、Long life: Use SMT Technology, optimized circuit design, no need to adjust the circuit after the whole machine leaves the factory.

5、Low power consumption: adopts a low power consumption design to reduce grid line loss.

6、Pre-order power; IC The card transmits data to realize data reading, including: reading back the total power, remaining power, accumulated power purchases in the meter, total number of power purchases and other information.

7、Store table constants, initial values, user address, name and other information.

8、Overload alarm and power outage, residual power alarm, reminding users to purchase power in a timely manner.

The emergence of smart meters has also brought many benefits to the power meter detection mechanism.For example, in the past, when testing a mechanical meter or electronic meter, after the meter is put on the power meter detection device, the debugger needs to manually enter the address of each meter in the debugging software, as well as the active and reactive levels of the meter, and the debugging parameter scheme applicable to the meter. These greatly increase the workload of the debugger, delay the delivery time of the meter on schedule, and have an unignorable impact on the company's brand image. However, since the birth of the smart meter, the debugger only needs to put the meter on the machine, and then connect the network cable port of the debugging computer with the network port on the power meter verification device, and set it up PC The serial ports communicate with the device side can automatically generate their various parameters on the verification software. Through the software's short-term automatic verification process, whether the quality of the smart meter meets national standards can be seen at a glance on the computer display screen.