Microprocessor Based System Design of Remote Power
Billing
Motivation
The current system of billing electricity
employs a rather tedious method of noting the power readings. In addition
to being tedious, the method is flawed with respect to the authenticity
of the reading, as the reading itself can be manipulated.
Furthermore, noting the reading is
done by a public official , who might be tempted to note inaccurate data
,if offered the right incentives. Wrong readings result in wrong billing,
and this may lead to public dissatisfaction. A lot of space is used in
storing the records and the task of manually maintaining a database is
mundane.
Objective
To facilitate billing of electric meters,
so that the readings are both accurate and secure, leading to an automatic
storage of the records.
Overview
Each of the meters will communicate with
a central device, thereby updating the readings. The bill will be calculated
based on the reading of the individual meter.
The task can be broken up into the
following modules:
Protocol Definition
Our design will have two levels. One
level includes the communication between the micro-processor and the PC.
The other level looks into the issue of wireless communication.
Design of the Server Software
The design of the server software involves
polling the serial port, calculating the bill and regular updating and
maintenance of the database.
Micro controller programming for computation
Micro controller design for the meter
interface to communication medium.
Interfacing with the actual meter
We can take a two approaches in this
problem. One, we can sample the current and voltage values regularly and
then we could generate digital signals based on this sampling. In the other
method we could hook up a conventional meter and count the number of revolutions
and then calculate the energy consumed.
Wireless Communication
We will read the meter reading remotely
using wireless communication and the server will poll for the current meter
reading .
Report
Nitin Suri & Saket Prasad Thakur / Dept. Computer Science and Engineering
/ IIT Delhi / Hauz Khas/ New Delhi 110016 /