Drunk Driving Detection with Car Ignition Locking Using Raspberry Pi

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Drunk Driving Detection

Drunk Driving Detection With Car Ignition Locking Using Raspberry Pi – Drunk driving is the reason behind most deaths, so the Drunk Driving Detection With Car Ignition Locking Using Raspberry Pi aims to change that with automated, transparent, noninvasive alcohol safety checks in vehicles. The system uses a raspberry pi with alcohol sensors, a dc motor, and an LCD display circuit to achieve this purpose. The system uses an alcohol sensor with, a raspberry pi with a dc motor to demonstrate as a vehicle engine. The system constantly monitors the sensitivity of alcohol sensors for drunk driver detection. If the driver is drunk, the processor instantly stops the system ignition by stopping the motor. If the alcohol sensor is not giving high alcohol intensity signals, the system lets the engine run. The raspberry pi processor constantly processes the alcohol sensor data to check drunk driving and operates a lock on the vehicle engine accordingly. At the same time, it is connected to a network from where the person who is driving is being monitored, and if any necessity of help will be provided to him by the caretaker who will get the alert on the monitoring webpage automatically.


According to the survey, most accidents are occurred because of the dunk and drive cases, in order to put a full stop a system using raspberry pi with an alcohol detection sensor and ignition which is presented with the help of the DC Motor is implemented using Network communication which will automatically stop the ignition if the alcohol is detected and also will inform to the caretaker with the help of the network using a web page which can be accessed from Wide Area Network (WAN).


Drunk Driving Detection, manual checking of alcohol is done where many people get to escape and accidents are occurring every day. Checking each and every person is not possible manually.


In this proposed system, an automatic alcohol detection system is also connected to the server from where the status of the person will be known at the same time if the alcohol is detected automatically the ignition will be off.


Drunk Driving Detection


Digital Tacometer 2
Drunk Driving Detection


Drunk Driving Detection
Drunk Driving Detection


  • In this project MCP3008 is used, so connect a 3.3v pin from raspberry to the sensor.
  • Similarly, MCP3008 and all sensor’s ground pins should be grounded
  • Now connect MQ3 Alcohol output pins to the first channel of MCP3008 IC.
  • Connect power supply for Raspberry pi
  • Plug the HDMI cable in Raspberry pi from the monitor using VGA to HDMI converter cable
  • Connect USB Mouse and USB keyboard to the Raspberry pi


  • Raspberry Pi
  • MQ3 Alcohol sensor
  • MCP3008(ADC IC)
  • SD card
  • Monitor


  • Raspbian Jessie
  • HTML and PHP
  • Language: Linux
  • Python


    This system is the next step to the safety measures of the people from which automation and IoT are being added to make it more accurate and reliable. The alcohol detection system is very much necessary is needed as prevention is better than cure.

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