The energy meter is an electrical measuring device, which is used to record Electrical Energy Consumed over a specified period of time in terms of units. Here we have an energy meter using the current sensing concept. This energy meter is prepaid that is recharge and use. The recharge can be done by sending a simple SMS from your mobile phone.
There is a recharge tag to be sent by the mobile which will act as the recharge code as a prototype. The system will check for the consumption on the basis of load and the recharge available. The power will be available until the recharge amount does not end.
The kit basically depends upon the energy units we use. In this kit, the power supply is cut-off after a particular unit. The operator sitting at a remote station can recharge the system using SMS. Here the microcontroller keeps on sensing the load also. As the load increases, it will turn off the relay, and hence the power will be cut. As soon as the load gets decreased, the controller can turn on the relay also.