AUTOMATIC TARIFF CALCULATION WITH WIRELESS ENERGY METER

Abstract: The current energy meter reading system relies on human labor, which has drawbacks such as computation errors, customer absences during billing, and additional costs associated with the billing procedure. The proposed system overcomes these limitations by implementing an automatic wireless energy monitoring and tariff calculation system. The system uses a digital energy meter, PIC16F72 microcontroller, ZigBee wireless communication modules, LCD display, optocoupler, relay circuit, and regulated power supply. The energy meter generates pulses proportional to electrical energy consumption. These pulses are detected using an IR sensor and processed by the microcontroller to calculate consumed energy units. The measured data is transmitted wirelessly to the Electricity Board (EB) section through ZigBee communication. At the EB section, automatic tariff calculation is performed based on predefined electricity rates. The billing information is transmitted back to the consumer side and displayed on the LCD screen. The system also includes an automatic load disconnection feature using a relay in case the electricity bill is not paid within the due date. The proposed system provides accurate billing, reduced manpower, real-time monitoring, improved efficiency, and secure wireless communication. The project can be effectively used in smart homes, industries, and modern automated energy management systems.

Keywords: ZigBee, Energy Meter, Wireless Communication, Automatic Billing, PIC16F72, Smart Metering, Tariff Calculation.