How prepaid electric meters work?

The work of the prepaid electric meter depends on the microcontroller inside the meter, so how does the prepaid electric meter work? The following will introduce you to the working principle of the prepaid electric meter.

1.Working principle of prepaid electric meter

The equipment includes current transformers, integrated metering chips, single-chip microcomputers, temperature-compensated real-time clocks, data interface equipment, and human-machine interface equipment. The system adopts a new type of measurement system, which can convert the analog signal of the voltage divider and current transformer into a digital signal, and obtain accurate active power and reactive power by numerically integrating it. Its results are stored in a data memory, and the information can be provided to the external interface and exchange data at any time. Its working principle is as follows.

2.The electrical working principle of the prepaid electric meter

In order to realize the prepayment function of the prepaid electricity meter, it is impossible to rely on the advance payment meter alone, and the advance payment meter system must also be used, which consists of the main station software system, data hub, data collector and fee control meter. Through NB-IOT, RS485 and wireless LoRa communication systems, the data collector communicates with different types of instruments to acquire and control valves and trip actions, and then sends the collected data to the data hub through spread spectrum wireless communication, and the hub will The collected data is sent to the master station through GPRS communication or Ethernet, so that users can analyze and query.

In short, in order to realize the prepayment function of the prepaid meter, it needs to match the prepaid meter system. Wuxi Zhongyi's intelligent comprehensive energy management and control system has powerful functions, and can be remotely opened and closed through WeChat or Alipay payment; Automatically collect data when the time comes, and generate an alarm message if the balance is insufficient, which can be sent to the customer's mobile phone in the form of SMS or WeChat.

Wuxi Zhongyi Smart Technology Co., Ltd. focuses on the development and manufacturing of smart water meters, energy meters, gas meters, covering more than 90 countries around the world. If you are interested in smart electric meters, please contact Zhongyi Smart!（www.zhongyismart.com）