GSM Based Prepaid Remote Energy Meter & OverVoltage Protection

Presented By:- L.Pringil

10AM1A0476

Introduction

• What is Energy Meter?

• What is Prepaid remote Energy meter?

• How Over Voltage is protected and detected ?

PROBLEM STATEMENT

• Electricity demand is on the increase. As population increases, comes more demand for electricity supply/consumption. Demand per capita is increasing due to large no. of gadgets in use. Demand from developing countries is also on the rise.

• “How can we manage customer consumption of electricity in response to supply condition, for example having electricity customers reduce their consumption at critical times"

BRIEFING

• WWe will interface digital energy e will interface digital energy meter to the easy recharge unit and meter to the easy recharge unit and hence converthence convertss it into a prepaid it into a prepaid energy meterenergy meter..

• By using this technology, we will By using this technology, we will be able to minimize the losses be able to minimize the losses occurred by corrupt employeesoccurred by corrupt employees..

• This also helps in the protection of Over Voltage

PASTPAST

ELECTRO-MECHANICALLow AccuracyControl – NILCommunications - ExpensiveTheft Detection – Poor

ELECTRO-MECHANICALLow AccuracyControl – NILCommunications - ExpensiveTheft Detection – Poor

PRESENT PRESENT

DIGITAL SOLID STATEHigh Accuracy Control – LIMITEDCommunications – External through RetrofitTheft Detection – Node only

DIGITAL SOLID STATEHigh Accuracy Control – LIMITEDCommunications – External through RetrofitTheft Detection – Node only

NEXTGEN NEXTGEN

REMOTE PREPAID ENERGY METERSVery High AccuracyControl – FULLCommunications – Built in (on chip / PCB)Theft Detection – High (Network level)

REMOTE PREPAID ENERGY METERSVery High AccuracyControl – FULLCommunications – Built in (on chip / PCB)Theft Detection – High (Network level)

History Of METERING SYSTEM

Block Diagram Diagram

Power Stationload 220-230v AC

Relay ON\OFF

Energy Meter

Load

Counter Unit

Recharging Section

Mobile

GSM Modem

Power Supply

ARM7LPC2148

Power Supply

Reset

Buzzer

ARM9

3.3V

12V12V

ComponentsARM7 LPC248ARM9TDMI

Energy meter GSM modem

Energy MeterEnergy meter is a device that measures the amount of electrical energy is consumed.

The meters fall into two categories:

Electromechanical induction meter operates by counting the revolutions of aluminum disc which is made to rotate at a speed proportional to the power.

Electromechanical meter Electronic meter

ARM7 & ARM9

ARM7 ARM9

Von neumann architecture. Harvard architecture,

32 bit RISC micro controller.32 bit RISC micro controller.

3 stage pipeline. 5 stage pipeline.

Single memory for Data and Instructions.

Seperate instruction and Data for memory interface.

GSM Modem• A GSM modem is one of the wireless modem that is

devised to work with a GSM wireless network.

• Used for text Sending and Receving.

• Support wide range of frequencies (from 850 MHZ to 1900 MHZ for different classification of GSM networks).

• In this we use SIM 300 mini GSM module for communication.

Over voltage Detection

Electronic meter consists of LED,which blinks according to power consumption.

If Power consumption is more LED blinks faster & Over Voltage is Detected.

LED blink receives train of pulses applied to interupt pin of ARM7

How Energy Meter is Interfaced

House

Electricity Board OfficeGSM Modem

Energy Meter

ARM7

GSM network

GSM Modem

ARM7 & Energy meter Is interface with GSM Network.

GSM Modem is Present at Office & at consumer side.

GSM Initialization

GSM sends notification to authenticated number through SMS.

Initialization Of GSM

System Implementation Authorized number sends SMS to GSM Modem an interrupt signal is occured.

ARM7 reads the pulse and sends status of pulse and units.

ARM9 Screen Display

• Once recharge is done units are displayed on ARM9

• We can know consumed units through SMS by giving missed to GSM Modem

If Recharged Units are Consumed

The devices will be SWITCHED OFF and displayed on ARM9.

Alert message is send to authenticated number

Advantages

Disadvantages

• Billing system fails if no GSM network coverage.

• Charges may be applicable for network use.

• Requries fixed GSM number.

CONCLUSION

• This pre-paid remote energy meter proves to be a boon in the power sector.

• Control the usage of electricity on consumer side to avoid wastage of power.

• Helps to the country revenue by stopping current theft and punishing the dishonest customers.

References

H.G.Rodney, Tan IEEE, C.H.Lee and V.H.Mok, 2007. Automatic Power Meter Reading system using GSM Network. The 8th International Power Engineering Conference, pp: 465-469. Md. Wasi-ur-Rahman, Mohammad Tanvir Rahman,Tareq Hasan Khan and S.M. Lutful Kabir 2009. Design of an Intelligent SMS Based Remote Metering System. IEEE International Conference on Information and Automation, pp: 1040-1043.

Kwang-il Hawang 2009. Fault Tolerant GSM based Remote Meter Reading Infrastructure. Journal of International Processing Systems. Vol:5, No 4, pp:221-228.

http://probots.co.in/Manuals/SIM300.pdf

Richa Shrivastava, Nipun Kumar Mishra, “An embedded system for wireless prepaid billing of digital energy meter” , International Journal of Advances in Electronics Engineering Vol1 No.1,pp.322-324.

Thank You

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