GSM Based Wireless Electricity Billing With TOD Metering

GROUP5Members:

ABHIJITH K K - 02

AFSAL P V - 04

ATHUL M G - 18

HRISHIKESH P - 26

current system

• Done by human operator from houses to houses and building to building.

• Requires huge number of labor operators.

• Long working hour to achieve complete area data reading and billing.

• Human operator billing are prone to reading error.

• Restricted and slow down by bad weather condition.

GSM BASED WIRELESS ELECTRICITY BILLINGWITH TOD METERING

• Automatic consumption calculation

• Separate billing for TOD(time of day)

• Optical interface with energy meter

• GSM mobile bill facility

• Real time display for unit and bill

Advantages

a) Consumer Side Advantages

• Precise consumption information

• Clear and accurate billing

• Better and faster customer service

• Eliminate billing delay

b) Electric Company Side Advantages

• Eliminate billing delay

• Save time

• Save money

• Save maintenance

• Smart automated processes instead of manual work

• Accurate information from the network load to optimise

maintenance and investments.

• Customized rates and billing dates.

MAIN PARTS• Photo transistor for optical interface

• PIC 16F877A as microcontroller unit

• 16*2 character LCD Screen

• DS1307 as Real Time Clock(RTC)

• External keys for data entry

• RS232 interface with Modem

• Bidirectional GSM communication

BLOCK DIAGRAM

OPTICAL INTERFACE

• Photo transistor L14F

• Communicate between energy meter and MCU

KEY BOARD• For Real Time data entry

• Micro switches are used

• Interfaced to port A

Real time cLock• DS1307

• 3v button cell

Micro controller

• PIC 16F877A

• Read the pulses from optical interface

• Calculate the unit and bill amount

• Control the function of LCD

• Read/write data from RTC

• Communicate with GSM modem

GSM Modem• Communicate GSM network and micro controller

• Interfaced through RS232 communication

• Bidirectional data transfer

Power supply:• Convert AC mains to DC 5v level

• Step down transformer (center tapped)

• Center tapped rectifier

• Capacitor filter

• Regulator LM7805

PCB DESIGN

• COMPONENT SIDE USING EXPRESS PCB SOFTWARE

• SOLDER SIDE USING EXPRESS SCH

CIRCUIT DIAGRAM

PCB LAYOUT: COMPONENT SIDE

PCB LAYOUT: SOLDER SIDE

ASSEMBLING : COMPONENT SIDE

ASSEMBLING : SOLDER SIDE

ACTUAL COSTSL NO: ITEMS QUANTITY PRICE PER UNIT AMOUNT

1 Micro switch 4 80 320

2 Energy meter 1 2900 2900

3 Photo transistor 1 54 54

4 Microcontroller 1 163 163

5 16*2 LCD Screen 1 200 200

6 Real time clock 1 40 40

7 GSM module 1 2100 2100

8 Serial interface 1 232 232

9 Transformer 1 80 80

10 Capacitor 2200uF 1 15 15

11 Capacitor .1uF 2 1 2

12 Regulator 1 105 105

13 Resister 14 250

Total amount:6460

SCHEDULE

AUG SEP OCT

1 2 3 4 1 2 3 4 1 2 3 4

Design

Componentspurchase

Assembling

Programming

Test

submission

THANKS