In this project, the idea of a smart electricity billing system using an ARM-7 microcontroller has been developed. This concept provides a cost efficient manner of electricity billing. The present energy billing systems are discrete, inaccurate, costly and slow. They are also time and labour consuming.”. This system measures the power consumption through IR sensor unit. After getting the power consumption the ARM processor will detect the unit pulse and the unit will be converted as per our currency based on government tariff values and displayed on LCD screen for specific user. Smart electricity billing system also reduces the error made by humans while taking readings to a large extent and there is no need to take reading in it. According to the power consumption, the amount will be displayed on LCD screen. A relay system has been used which shut down or disconnect the energy meter and load through supply mains when the consumer doesn't pay his bill within the given time. Buzzer and LED's are used for indicating the payment of the bill by the user.
Energy meter, GSM technology, Microcontroller ARM-7(LPC2148)