The design of prepayment single-phase energy meter

The paper design a Wireless Prepayment Energy Meter, which is used to measure single-phase energy with 50/60Hz rated frequency. It realizes the functions of prepayment management and load control that pay of energy first & use it afterwards, the data can be exchanged between Energy meters and Energy supplying department by RF cards. The information can be transmitted in a non-contact way. In this way, the purpose of automatic identification can be achieved. The paper describes hardware design firstly, then software designs.