13-06-2014, 02:56 PM
PREPAID ENERGY METER WITH TARIFF INDICATOR
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Introduction
A scheme of Electricity billing system called “PREPAID ENERGY METER WITH TARIFF INDICATOR” can facilitate in improved cash flow management in energy utilities and can reduces problem associated with billing consumer living in isolated area and reduces deployment of manpower for taking meter readings. Every consumer can buy a memory card (is nothing but an EEPROM IC) with a password stored inside it using a MC program. The memory card is available at various ranges (ie. Rs 50, Rs 100, Rs 200 etc…).In our project we have given the name for memory card as smart card. When the consumer insert a smart card into the card reader which is connected in “prepaid energy meter with tariff indicator” kit. Then the card reader will read the stored information and delete the information from the EEPROM IC(smart card) using the MC program. So that the smart card cannot be reused by others. Suppose if a consumer buy a card for Rs.50/- he / she can insert this amount through the card reader so that prepaid energy meter with tariff indicator kit will be activated. According to the power consumption the amount will be reduced. When the amount is over, the relay will automatically shutdown the whole system.
Review of literature
CURRENT MANUAL SYSTEM
Let’s try to expand the problems in manual meter reading on the following resources:
Planning
We all know “the best planning leads to the best results”. So when we finalized our project it was a question from where to start? There are many directions but we had to choose the right one. This was starting the step of our project.
The first event we did was to go through many books, discussion, meeting, consultations & suggestions, satisfying the basic needs of client. After hard working we designed our circuit.
Now next task was procurement of material for that we listed firs the required parts & divided our team in four parts. The work was equally divided. As our project is hardware & software based so two of us were worked for software & other two were worked for hardware.
PCB DESIGNING
The name printed circuit board suggests that printing processes involved in drawing the artwork on the board. And printing processes are often used to transfer an image to a PCB.
History of the PCB:-
In 1930’s the technology for making a PC board was invented and name into use during 1945. Before that time circuits were constructed with point to point soldering component on an insulating board. But this is time consuming and bard to troubleshoot. Printed circuit board is a piece of art. The performance of an electronics circuit depends upon layout and sensing PCB.
CIRCUIT DESPCRITION
The automatic metering system is designed to make the prevailing electricity billing system simpler and efficient.
The conventional metering system is done manually. An employee of the Electricity Board will be coming to take the reading and enter in the card.
There are more chances of manual error, delay in processing, tampering of the meter and misusage of the Electricity by other sources.
It requires so many workers, one set of workers to note down the reading and other set to cut the power if the payment is not paid at the right time and we have very poor servicing.
It requires so many workers, one set of workers to note down the reading and other set to cut the power if the payment is not paid at the right time and we have very poor servicing.
POWER SUPPLY
Power supply is the first and most important part of our project. In the proposed project the power supply circuit is used to provide the regulated supply to the IC`s used in the project. Power supply circuit consists of step down transformer, rectifier circuit, filter circuit and regulator IC.
Step Down Transformer
Transformers are static device which convert the electrical energy from one circuit to another circuit without any change in frequency and power. Step down transformer means the transformer which reduces the supply voltage to the desired value. In our project we need 12 volt DC supply, therefore in this project 12-0-12, 500mA transformer is used.
. Application and Future Development
In the designing of our projects, we have kept in mind the
user.in the implementation part which interacting with the user we had given lot of guideline to user with various massages. it has powerful control with which you can easily implement various facilities in our projects .the screen are very user friendly.
• Only single man can control the all over industry from one place with single unit control.
• The operation and working are performed very accurately as compared with existing technology.