javed_ summer internship 2014

Data Communication & Control (Pvt.) Ltd. 1

SUMMER INTERNSHIP 2014Data Communication & Control (Pvt.) Ltd.

AMR MULTIPLEXED METERPRESENTED BY

MUHAMMAD JAVEDReg. No. 2011152

FACULTY OF ELECTRONIC ENGINEERINGGIK INSTITUTE OF ENGINEERING SCIENCES AND

TECHNOLOGY


INTRODUCTION

AMR MULTIPLEXED METER is a single Micro controller based energy meter that measures the power consumption of number of metering points, and transmit the data to the Server through a wireless network


MAIN FEATURES

Multiplex metering (up to 8 metering)Remotely monitored via GPRS/GSM servicesData logging is done on the SD CardAlarm triggers for power failure


WORKING PRINCIPLE


MASTER CONTROLLER BOARD


MASTER CONTROLLER BOARD

Stellaris® LM3S6432 MicrocontrollerDS1338 serial real-time clock (RTC)Micro SD Card

I2C for communication between Microcontroller and RTC.

SPI for data logging in the Micro SD Card by the Microcontroller.


METERING CARD

Shunt resistors to measure currentVaristors for voltage protectionADE7758 Multifunction energy metering IC


METERING CARD

A total of eight metering cards are stacked on the mother board.

Reading is recorded at each metering card via polling and the cycle continues.

SPI is used to communicate between the controller and the metering card.


BASE BOARD


POWER SUPPLY

• 3.3V : 1AMicrocontroller

• 3.8/4V : 3A

GSM SIM 900 Module

• 5V : 50mAMeter Chip

11

Modifying the PCB Layout of the Master Controller Card

Data Communication & Control (Pvt.) Ltd. Summer Internship 2014


Steps in Modifying the Master Controller Card:

Learning of the EAGLE software for designing of the PCB layouts

Practicing by making the PCB layouts of some example circuits

Modifying the Master Controller CardChecking by Engr. Rahul and Engr. Noman at

DCC


Some Rules to Remember while making the PCB Layouts

The angle of wiring should never be 90°Number of VIAS should be as less as possibleSetting the proper width of the wiresThe area of the PCB board should be as less

as possible


PCB Layouts of Example Circuits:

Power Supply circuitIgnitor Circuit for a Gas Turbine


Power Supply circuit:Schematic Diagram:


Power Supply circuit:PCB Layout:


Ignitor Circuit for a Gas Turbine:Circuit Diagram:


Ignitor Circuit for a Gas Turbine:PCB Layout:


Modifying the Master Controller Card:

In modifying the PCB layout of the master controller card I did the following steps:

Changing the connections of some pins(labels)

Making the IC Package of TIOM4232 IC


Changing the Pin Connections (Labels):


Changing the Pin Connections (Cont...)


Making the Package of TOIM4232 IC

Symbol of TOIM4232 IC I developed Package of TOIM4232 IC I developed


Schematic Diagram of modified Master Controller Card:


PCB Layout of the Modified Master Controller Card:


LEARNINGS & CONCLUSIONUnderstanding the basics of programming of

Stellaris Microcontroller was a difficult task as I was not familiar with it.

Practical knowledge of the industrial microcontroller would be very helpful for me.

Learning PCB designing in limited time was a challenging task.

The tasks assigned gave me an insight that theoretical knowledge and industrial applications are interlinked.


LEARNINGS & CONCLUSIONThrough this Internship, I learned to

Implement theoretical concepts on the practical professional projects.

I not only gained a lot of major knowledge but more importantly, I also had a great chance to sharpen my skills in a professional working environment.


ACKNOWLEDGEMENTSI am very grateful to the management and

team of DCC for providing me such a wonderful opportunity to accomplish my professional training.

I am also very thankful to Mr. Mohsin Akhter who consider me eligible to work in such a prestigious organization.

javed_ summer internship 2014

Documents

dcc data communication

master controller card

gprsgsm services data

pcb board

metering card shunt

metering cards

metering points

circuit diagram