This document presents an alcohol detection and monitoring system with engine locking that is designed to reduce drunk driving accidents. The system uses an alcohol sensor to detect alcohol levels in a driver's breath and will send a signal to a microcontroller to stop the engine and trigger an alarm if alcohol is detected. It also uses a GPS module to track the vehicle's location and a GSM module to send a message with the location to local authorities. The system is intended to automatically detect drunk driving and alert authorities in order to improve road safety.

1. ALCOHOL DETECTION & MONITORING SYSTEM
WITH ENGINE LOCKING
Presented by:
Anubhav Ghosh Dastidar (14800318102)
Chiranjib Chowdhury (14800318085)
Raka Sarkar (14800318047)
Sonali Sarkar(14800318022)
Under the guidance of
PROF. MR. MAYUR DE
(Assistant Professor, Dept of ECE, FIEM)

2. Acknowledgement
We express our sincere gratitude to Prof. (Dr.) Dipankar Ghosh, (Head of the Department,
Electronics and Communication Engineering, Future Institute of Engineering and Management).
We are deeply indebted to our mentor Prof. Mr. Mayur De for his invaluable advice and
guidance without which this report would not have been possible.
We are also grateful to all the faculty and staff members of Electronics and Communication
Engineering Department for their co-operation.
Finally, we would like to thank all our dear friends for their whole hearted cooperation, support
and encouragement.

3. CONTENTS
• ADVANTAGES AND
DISADVANTAGES
• RESULTS AND DISCUSSION
• FUTURE SCOPE
• CONCLUSION
• REFERENCES
• INTRODUCTION
• OBJECTIVE
• WORKING PRINCIPLE
• BLOCK DIAGRAM
• CIRCUIT DIAGRAM
• MECHANISM
• COMPONENTS

4. INTRODUCTION
• Despite the strict enforcements of several laws over the past few decades,
drunk driving claims approximately 10000 lives each year.
• As per the National Statistics , an average of 12000 people die every year
and an average of nine lakh people get arrested in drinking and driving
incidents.
• Thus road safety is appearing as a big social concern around the
worldwide.
• Therefore, there is the need for an automatic alcohol detection system
that can function without the restriction of space and time.

5. OBJECTIVE
• The system detects the alcohol level present in the air inside the
vehicle.
• On sensing alcohol it sends a feedback to the government website
along with the location of the drunk person.
• Hence the system will reduce the number of road accidents and
casualties due to drunk driving in future.

6. BLOCK DIAGRAM

7. WORKING PRINCIPLE
1. The alcohol sensor will detect presence or absence of alcohol in
the driver’s breathe or in the car.
2. If presence of alcohol is detected it will send the necessary signal
to the microcontroller.
3. The microcontroller will show a stop in the display, then it will
trigger the driver IC to stop the engine of the car along with a buzz
in the alarm.
4. Besides this the GPS and the GSM module will track the location
followed by the system will transmit a message to the nearest
traffic operator.

8. CIRCUIT DIAGRAM

9. MECHANISM
• When the alcohol sensor detects alcohol, a message is displayed in
the LCD, the buzzer starts beeping and the engine stops.
• The latitude and longitude is obtained via the GPS module
• A message is sent with the help of GSM module to the local PS
which includes the location and information about the person and
the vehicle

10. COMPONENTS

11. THE GPS MODULE
• Used to monitor location.
• GSM frequency : 850/900/1800/1900 MHz.
• GPRS : Class 12, TCP/IP.
• Memory : 32+32Mb.
• Frequency : L1,1575.42MHz C/A code.
• Location accuracy : < 10 meters.
• Battery : 2500mAh/3.7V & 5000mAh/3.7V.

12. THE GSM MODULE (SIM-800L)
• Make and receive voice calls using an external 8Ω speaker & electret
microphone
• Send and receive SMS messages
• Send and receive GPRS data (TCP/IP, HTTP, etc.)
• Scan and receive FM radio broadcasts
• Serial-based AT Command Set
• FL connectors for cell antennae
• Accepts Micro SIM Card

13. THE ALCOHOL DETECTOR (MQ-3)
• MQ-3 gas sensor has high sensitivity to Alcohol,
and has good resistance to disturb of gasoline,
smoke and vapor.
• This sensor provides an analog resistive output
based on alcohol concentration.
• When the alcohol gas exist, the sensor's
conductivity gets higher along with the gas
concentration rising.

14. ARDUINO UNO R3
• Arduino Uno is a microcontroller board based on
the ATmega328P (datasheet).
• It has 14 digital input/output pins (of which 6 can
be used as PWM outputs)
• 6 analog inputs, a 16 MHz ceramic resonator
(CSTCE16M0V53-R0), a USB connection, a power
jack, an ICSP header and a reset button.

15. DRIVER IC (L293D)
• Can be used to run Two DC motors with the same IC.
• Speed and Direction control is possible
• Motor voltage Vcc2 (Vs): 4.5V to 36V
• Maximum Peak motor current: 1.2A
• Maximum Continuous Motor Current: 600mA
• Supply Voltage to Vcc1(vss): 4.5V to 7V
• Transition time: 300ns (at 5Vand 24V)

16. TRANSFORMER
SPECIFICATIONS
• Input Voltage: 230V AC
• Output Voltage: 12V or 0V
• Output Current: 500mA
• Mounting: Vertical mount type
• Winding: Copper
FEATURES
• Soft Iron Core.
• 500mA Current Drain.
• 100% Copper Winding

17. DC MOTOR
• A DC motor (Direct Current motor) is the most common type of
motor
• If you connect these two leads directly to a battery, the motor will
rotate.
• If you switch the leads, the motor will rotate in the opposite direction.
• Warning − Do not drive the motor directly from Arduino board pins.
This may damage the board.

18. POWER SUPPLY UNIT
BRIDGE RECTIFIER
• Maximum Input Voltage (VRMS): 560V.
• Maximum Peak Reverse Voltage (VRRM): 800V.
• Output DC Current: 1.5A (max)
• Voltage Drop Per Bridge: 1V @ 1A.
• Output Voltage: (√2× VRMS ) – 2 Volt.
• Surge current: 50A.

19. FILTER CAPACITOR
• A capacitor that is used to filter out a certain frequency otherwise series
of frequencies from an electronic circuit is known as the filter capacitor.
• Generally, a capacitor filters out the signals which have a low frequency.
The frequency value of these signals is near to 0Hz, these are also known
as DC signals.
• 1Hz & 100KHZ signals flow throughout a resistor with equal resistance.

20. 7805 REGULATOR
• 5V Positive Voltage Regulator
• Minimum Input Voltage is 7VMaximum Input Voltage is 25V
• Operating current(IQ) is 5mA
• Internal Thermal Overload and Short circuit current limiting protection is
available
• Available in TO-220 and KTE package

21. 16X2 LCD DISPLAY
• A line display is used for the message, whether
the driver is eligible to drive or not, for that a
16X2 LCD display is used along with a display
decoder.
• A 16x2 LCD means there are two lines and
each line can display 16 characters. In 5x7
pixel matrix each character is displayed in LCD.

22. ALARM
• Rated Voltage: 6V DC
• Operating Voltage: 4-8V DC
• Rated current: <30mA
• Sound Type: Continuous Beep
• Resonant Frequency: ~2300 Hz
• Small and neat sealed package
• Breadboard and Perf board friendly

23. ADVANTAGES AND DISADVANTAGES
ADVANTAGES DISADVANTAGES
•The Alcohol detection with engine locking system
can be implemented in any 4- wheelers.
•The Government can keep track of drunken
driving cases.
•It can provide quick and accurate results.
•Chance of loss of life and property is minimized.
•Warning the nearest authority using GSM module
will provide accurate information for a specific
vehicle located using a GPS tracker
• Breath analyzers using alcohol
detection are available at high
prices.
• They have shorter lifetime.
• Breath analyzers require continuous
re-calibration.
• Damage of sensor can not be
detected.

24. RESULTS AND DISCUSSION
EXPECTED RESULT
• a drunk person tries to take control of vehicle, the alcohol sensor will detect the presence of alcohol and
if presence of alcohol is detected by the sensor, it will shut down the vehicle’s engine and sound an alarm
thereby alerting the nearby people.
• Upon integrating the GPS and GSM modules, the location of the drunk driver vehicle which is sent via text
message is shown in Figure 7(a) together with Google map location of the coordinates (b).
Figure 5. Result of GSM module, (a) Text message screenshot of
driver’s location, (b) Google map integration

25. FUTURE SCOPE
• Smoke sensor can be used to increase the efficiency of the project.
• Voice feedback can be used in GPS module.
• A secondary sensor can be added so that it will support the functionality of
alcohol sensor and will give an accurate output and a system that provides
more useful details about the accident vehicle other than the location and
driver’s condition.

26. CONCLUSION
• The system runs perfectly in detecting the presence of alcohol in the driver’s
breath that does a further action which is tracking the location of the car
and sending its position in latitude and longitude via text message to
authorized persons.
• The system will improve road safety and provide development in
automobile industry regarding accident prevention technology.
• Being small in volume, this alcohol detection system will be feasible and
easy to implement.

27. REFERENCES
• [1] Juha Hyyppa, et al “Map updating and change detection using vehicle-based laser
scanning”, Urban Remote Sensing Event, 22 May 2009.
• [2] Tessa Tielert, Moritz Killat, Hannes Hartenstein, Raphael Luz, Stefan Hausberger,
Thomas Benz, “The impact of traffic-light-tovehicle communication on fuel
consumption and emissions”, Internet of Things (IOT), 29 Nov.-1 Dec. 2010.
• [3] Chi-Man Vong, et al “Framework of vehicle emission inspection and control
through RFID and traffic lights”, System Science and Engineering (ICSSE), 2011
International Conference, 8-10 June 2011.
• GPS TRACKER AND ALCOHOL DETECTOR WITH ENGINE LOCKING SYTEM USING GSM
Swetha.A, Pallavi.B, Pravallika.B, Madhuri.C, Jayasheela.T Department of ECE SSE
College, Puttaparthi, Ap, India Mr. Venkatesh. B (M Tech) Asst. Professor, Dept. Of ECE
SSE College, Puttaparthi, Ap, India.