This document summarizes a presentation about an AMR multiplexed energy meter that can measure power consumption from multiple metering points and transmit the data wirelessly. The key points are: 1. The meter uses a single microcontroller to measure consumption from up to 8 metering cards and transmit the data via GPRS/GSM to a server. 2. It has features like data logging to an SD card and alarm triggers for power failures. 3. The intern modified the master controller PCB layout by changing some pin connections and creating an IC package. This helped them gain experience with PCB design and microcontroller programming in an industrial context.

1. PRESENTED BY
MUHAMMAD JAVED
Reg. No. 2011152
FACULTY OF ELECTRONIC ENGINEERING
GIK INSTITUTE OF ENGINEERING SCIENCES AND
TECHNOLOGY
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2. 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
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3. MAIN FEATURES
 Multiplex metering (up to 8 metering)
 Remotely monitored via GPRS/GSM services
 Data logging is done on the SD Card
 Alarm triggers for power failure
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4. WORKING PRINCIPLE
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5. MASTER CONTROLLER BOARD
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6. MASTER CONTROLLER BOARD
 Stellaris® LM3S6432 Microcontroller
 DS1338 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.
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7. METERING CARD
 Shunt resistors to measure current
 Varistors for voltage protection
 ADE7758 Multifunction energy metering IC
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8. 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.
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9. BASE BOARD
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10. POWER SUPPLY
• 3.3V : 1A
Microcontroller
• 3.8/4V : 3AGSM SIM 900
Module
• 5V : 50mA
Meter Chip
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11. Data Communication & Control (Pvt.) Ltd. Summer Internship 2014 11

12. 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 Card
 Checking by Engr. Rahul and Engr. Noman at DCC
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13. 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 possible
 Setting the proper width of the wires
 The area of the PCB board should be as less as possible
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14. PCB Layouts of Example Circuits:
 Power Supply circuit
 Ignitor Circuit for a Gas Turbine
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15. Power Supply circuit:
 Schematic Diagram:
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16. Power Supply circuit:
 PCB Layout:
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17. Ignitor Circuit for a Gas Turbine:
Circuit Diagram:
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18. Ignitor Circuit for a Gas Turbine:
 PCB Layout:
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19. 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
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20. Changing the Pin Connections (Labels):
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21. Changing the Pin Connections (Cont...)
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22. Making the Package of TOIM4232 IC
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Symbol of TOIM4232 IC I developed Package of TOIM4232 IC I developed

23. Schematic Diagram of modified Master
Controller Card:
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24. PCB Layout of the Modified Master
Controller Card:
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25. LEARNINGS & CONCLUSION
 Understanding 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.
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26. LEARNINGS & CONCLUSION
 Through 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.
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27. ACKNOWLEDGEMENTS
 I 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.
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