MADDA WALABU UNIVERSITY
SEMISTER PROJECT
Microcontroller Based Automatic Vehicle Lock Control
System of Drunken Driver.
GROUP MEMBERS
ID NO
1.Mengistu Teshome……………………………0031/07
2.Regasa Lemma………………………………...0035/07
3.Shifera Abera………………………………….0038/07
4.Torbi Fatula……………………………………0041/07
APRIL 15, 2018
MWU
Bale Robe, Ethiopia
ABSTRACT
Road accidents are very common in today’s busy life. Thus drunk driving is a major reason
accident in any country all over the world. Most of the people use private vehicles and sometimes
being careless, people may drive in a drunken state. This may lead to hazardous accidents. To
avoid such conditions, we have done the project named as microcontroller based automatic vehicle
lock control of drunken driver as a smart solution to prevent the phenomenon that enhances safety
on roads. The purpose of this project is to implement an alcohol detector-microcontroller system
to reduce traffic accident cases based on driving under the influence of alcohol. A breath alcohol
detector or better known as a breathalyzer plays a vital role in monitoring alcohol concentration in
a person’s bloodstream. This project involves the design and development of various devices such
as breathalyzer device and its synchronization with other device to control an ignition switch so as
to assure the safety of the people inside the vehicle. The hardware modules include the
PIC16F877A microcontroller; alcohol sensors, LCD panel and GSM modem. The software
component includes the C programming language and source code which is implemented PIC
microcontroller. Upon assembly, the system is able to detect the alcohol concentration in a
person’s breath sample and displays the detected amount in terms of BAC (Blood Alcohol
Concentration) percentage on the LCD panel. Based on the concentration level According to the
amount, the system decides whether to enable or disable the ignition switch circuitry. It sends
message through a GSM modem whenever a person is found to be driving in a drunken state.