RE: GSM Based Automatic Energy Meter Reading
GSM ENERGY METER (3).doc (Size: 448 KB / Downloads: 128)
Wireless communication is the transfer of information over a distance without the use of electrical conductors or "wires". The distances involved may be short (a few meters as in television remote control) or long (thousands or millions of kilometers for radio communications).Wireless operations permits services, such as long range communications, that are impossible or impractical to implement with the use of wires.
Industries are implementing automation within a blink of eye. Automation through innovative ways are always accepted everywhere. Nowadays, KSEB appointing persons to read the energy consumption of consumers. This results excess wastage of money and human effort. In order to provide a solution for this wireless transmission of energy meter reading may be thought. In this project, there will be an energy meter, a microcontroller and a communication module. The microcontroller will transmit the current meter reading whenever demanded by the authority. At the KSEB side, there should be another communication module display to demand the meter reading and view the reading.
THEORY OF THE CIRCUIT
Heart of the circuit is a microcontroller. The microcontroller used here is the PIC 16F877A. PIC is a family of Harvard architecture microcontrollers made by Microchip Technology, derived from the PIC1640 originally developed by General Instrument's Microelectronics Division. The name PIC initially referred to "Peripheral Interface Controller".
PICs are popular with developers and hobbyists alike due to their low cost, wide availability, large user base, extensive collection of application notes, availability of low cost or free development tools, and serial programming (and re-programming with flash memory) capability.
FEATURES OF PIC MICROCONTROLLER
High-Performance RISC CPU:
Only 35 single-word instructions to learn
All single-cycle instructions except for program branches, which are two-cycle
Operating speed: DC – 20 MHz clock input
Universal Synchronous Asynchronous Receiver
Transmitter (USART/SCI) with 9-bit address detection
10-bit, up to 8-channel Analog-to-Digital Converter (A/D)
Brown-out Reset (BOR)
Analog Comparator module
Special Microcontroller Features:
100,000 erase/write cycle Enhanced Flash program memory typical 1,000,000 erase/write cycle Data EEPROM memory typical Data EEPROM Retention > 40 years
Self-reprogrammable under software control
In-Circuit Serial Programming™ (ICSP™) via two pins
Single-supply 5V In-Circuit Serial Programming
Watchdog Timer (WDT) with its own on-chip RC oscillator for reliable operation