Zhejiang Tianpusheng Electric Co., Ltd. is one of the largest manufacturers of electric energy meters in Taizhou City, Zhejiang Province, China. One of the products we promote is prepaid electricity meter.

The working principle of a three-phase prepaid meter: It consists of a current transformer, an integrated metering chip, a microcontroller, a temperature-compensated real-time clock, a data interface device and a human-machine interface device. The integrated metering chip converts the analog signal from the voltage divider and current transformer into a digital signal, and performs a digital integration operation on it, so as to accurately obtain active and reactive energy. The microcontroller is based on the corresponding tariff and demand, etc. Request data processing. The result is stored in the data memory, and provides information and data exchange to the external interface at any time.

Working principle of single-phase prepaid meter: Using electronic technology, the load voltage and current sampling signals are converted into digital signal processing by 16-bit A/D, voltage, current, and power are calculated to complete single-phase electric energy measurement. At the same time, the A/D converter generates power pulses and sends them to the CPU counting channel. The CPU performs various management tasks such as time-sharing measurement and information transmission functions through various calculations.

Compared with ordinary electricity meters, prepaid electricity meters are composed of three main functions:

1. Electric energy measurement part

2. Microprocessor control part (including IC card)

Three, trip device

The electric energy metering part uses a dedicated metering circuit like ordinary electronic electric energy meters to generate a pulse sequence indicating how much electricity is used, and send it to the microprocessor for electric energy measurement. The microprocessor transmits the electricity through the electric card interface and the electric energy card (IC card). Authority, through the tripping device to achieve control functions such as on and off.

With the comprehensive advantages of price, quality and technology, the company's products can be seen everywhere. If you are interested in buying our products, please click on the link to contact us: https://www.yhddb.com/product/prepaid-kwh-meter/single-phase-prepaid-kwh-meter/ Thinking of you and wishing you a beautiful Christmas season.