Arduino UNO Based Remote Controlled Gas Leakage Detecting Robot

1. ARDUINO BASED GAS
LEAKAGE DETECTION
ROBOT

2.  THE GAS LEAKAGE DETECTION ROBOT WILL DETECT THE GAS
LEAKAGE AND GIVE INDICATION BY AN ALARM SIGNAL
 THE HEART OF THE ROBOT IS ARDUINO UNO BOARD
 ARDUINO IS AN OPEN SOURCE ELECTRONIC PROTOTYPING
PLATFORM
 THE ROBOT CAN DRIVEN REMOTELY USING AN ASK RF REMOTE
CONTROL
 THE ASK RF REMOTE CONTROL PROVIDES THE ADVANTAGE OF A
GOOD CONTROLLING RANGE
 LPG GAS LEAKAGE CIRCUIT IS PROVIDED AT THE OUTPUT
SECTION TO DETECT GAS LEAKAGE
INTRODUCTION

3. BLOCK DIAGRAM
ENCODER
SWITCH
T
R
A
N
S
M
I
T
T
E
R
RECEIVER
DECODER
ARDUIN
O UNO
BOARD
MOTOR DRIVER
M
2
M1
GAS
DETECTOR

4.  REMOTE SECTION
IT AIMS AT TAKING CONTROL INPUT FROM SWITCHES AND
TRANSMIT RF SIGNALS TO CONTROL ROBOT BODY
 ROBO SECTION
THIS SECTION BASICALLY AIMS AT RECEIVING ROBOT
CONTROL INPUTS FROM REMOTE AND CONTROL ROBO WHEEL
MOTORS AS PER THE PROGRAMING DONE IN ARDUINO.THIS
SECTION CAN AGAIN BE CLASSIFIED AS :
BLOCK DIAGRAM DESCRIPTION
•RECEIVER SECTION
•MOTOR DRIVING SECTION
•GAS SENSING SECTION

5. REMOTE SECTION
R1
750k R2
750k
SW4
RIGHT
SW3
LEFT
U1
HT12E/DIP18
1
2
3
4
5
6
7
8 10
11
12
13
14
15
16
1718
9
A0
A1
A2
A3
A4
A5
A6
A7 AD8
AD9
AD10
AD11
TE
OSC2
OSC1
DOUTVDD
GND
SW1
FORWORD
BT1
BATTERY
J2
ASK TRANSMITTER
1
2
3
4
SW2
BACKWORD
ANTENNA
9V
HT12E

6. CIRCUIT DESCRIPTION
IT CONSIST OF HT12E ENCODER,ASK TRANSMITTER,SWITCHES,BATTERY,
AND RESISTORS
ASK TRANSMITTER
ENCODER TAKES LOW INPUTS FROM SWITCHES
TE PIN IS TAKEN LOW TO SERIALLY TRANSMIT DATA SET ON 8 ADDRESS
LINES AND 4 ADDRESS/DATA LINES
DURATION OF DATA TRANSFER IS DETERMINED BY THE RESISTOR VALUE IN
OSC1 AND OSC2 PINS
 TRANSMITTER RECEIVES SIGNAL FROM Dout PIN OF ENCODER IC
RECEIVED SIGNAL IS TRANSMITTED THROUGH ANTENNA
HERE WE USE 434Mhz ASK TRANSMITTER TO TRANSMIT SIGNAL OVER
THE RANGE OF 100m

7. RECEIVER SECTION
R2
LED
1
2
3
4
5
6
7
8
HT12D
14
17
18
1
2
3
4
5
6
7
16
15
10
11
12
13
9
8
DIN
VT
VDD
A0
A1
A2
A3
A4
A5
A6
OSC1
OSC2
D8
D9
D10
D11
A7
A7
R1
VCC
ASK RECEIVER
ANTENNA
33K
330ohm
T
O
A
R
D
U
I
N
O

8. CIRCUIT DESCRIPTION
ASK RECEIVER IS USED TO RECEIVE SIGNAL FROM TRANSMITTER
IT OPERATES IN FREQUENCY RANGE OF 434Mhz
OPERATION VOLTAGE IS 5V
ASK RECEIVER
HT12D DECODER IS USED TO RECEIVE DATA FROM THE
HT12E ON ITS Din PIN
IF ADDRESS PART OF DATA RECEIVED MATCHES THE LEVELS
ON A0 TO A7 PINS FOUR TIMES SUCCESSION THE VT PIN IS
TAKEN HIGH AND LED GLOWS
THE DATA OUTS FROM D8 TO D11 OF HT12D ARE FED TO PIN 2 TO 5
OF ARDUINO

9. ARDUINO UNO
Microcontroller ATmega328
Operating Voltage 5V
Input Voltage (recommended) 7-12V
Input Voltage (limits) 6-20V
Digital I/O Pins 14
Analog Input Pins 6
DC Current per I/O Pin 40 mA
DC Current for 3.3V Pin 50 mA
Flash Memory 32 KB
SRAM 2 KB
EEPROM 1 KB
Clock Speed 16 MHz

10. MOTOR DRIVING SECTION
This Circuit Represents L293d Which Is Motor
Driver Circuit Used To Rotate 2 Different
Motors
In This Figure Pin No. 1, 9 And 16 Are
Connected To 5 Volt Power Supply.
Pin No. 8 Is Connected To 9 Volt.
Pin No. 4,5,12 And 13 Is Short Circuit And Is
Connected To Gnd.
One Pin Of Motor Is Connected To Pin No. 3
And Other Pin Is Connected To Pin No. 6 Of
L293d, Same In Another Section Of L293d.
And Motor Is Drive Through Output From
arduino To Pin No. 2,7,10 And 15.

11. BATTERY CHARGER
THIS CIRCUIT IS USED TO CHARGE THE BATTERYS USED
IT CONSIST OF
•STEP DOWN TRANSFORMER 230V AC MAIN I/P TO 9V AC
•BRIDGE RECTIFIER -9V AC TO 9V DC
•REGULATOR IC LM317-TO REGULATE O/P CURRENT AND
VOLTAGE
•RELAY &RELAY DRIVING SECTION-TO CUTOFF SUPPLY WHEN
BATTERY IS FULL

12.  CAN BE USED FOR IDENTIFYING POTENTIALLY HAZARDOUS GAS
LEAKS AT PIPE LINES,UNDERGROUND MINES......
 IN MILITARY APPLICATIONS
 FOR HOMELY USE TO DETECT LPG GAS LEAKAGES
APPLICATION OF PROJECT

13. REFERENCE
WWW.ARDUINO.CC
WWW.EFY.COM
NET REFERENCE
DATASHEET REFERENCE
ARDUINO UNO
ASK MODULES

14. THANK
YOU