This system is designed to solve the problem where drivers may not be able to brake manually exactly at the required time, but the vehicle does not even start if driver will not take proper precautions like seat belt. An automatic brake system for a vehicle consists of an electric motor, related to the motor for transmission motion from the motor to a brake lever that pushes the restraint. This project provides a brand new idea style of the EMPB (Electro Mechanical Parking Brakes) system that has straight forward and cheap characteristics. This project deals with coming up with and fabrication of EMPB system. Mechanical device hand brake system conjointly remarked as brake by-wire, replace typical parking braking systems with a totally electrical part system. This happens by replacement typical linkages with electrical motor-driven units. The braking force is generated directly at every wheel by high performance electrical motors and automobile management, that area unit controlled mechanical device hand brake provides the subsequent edges over the traditional handbrake: easy use-the hand brake is applied totally no matter the strength of the driving force. Safety- the electrical hand brake applies mechanically once the key is off from the ignition.

1. Technocrats Institute of Technology (Excellence)
Department of Mechanical Engineering
Major Project
On
Automatic Brake & Seat Belt Release System

2. Presented By-
• Rishabh Malvi 0191ME193D59
Guided By- Dr Manish Joshi Sir
HOD of Department of Mechanical
Engineering
Presented To- Final Year Project Committee
Department of Mechanical
Engineering

3. Introduction:-
 Nowadays, the number of accidents is so high and
uncertain. Accident will occurs every time and every
where and cause worst damage, serious injury and
dead. These accidents are mostly cause by delay of the
driver to hit the brake.
 This Project is designed to develop a new system that
can solve this where drivers may not brake manually
but the vehicles does not even start if our condition is
not fullfill.
 Thus, this new system is designed to solve the problem
where drivers may not be able to brake manually
exactly at the required time, but the vehicle does not
start if driver will not take proper precautions like seat
belt.

4. COMPONENTS USED:
• DC Motor 10 RPM
• Micro-controller 8015
• Motor Driver
• Battery 12V 8 Amp
• Voltage Regulator
• Key Locker

5. Main Components-
 DC Motor- 10 RPM 12V DC geared motors
widely use for robotics applications. Here we
are used this for our project in automatic brake
release system this is very easy to use and
available in standard size. Also, you don’t
have to spend a lot of money to control motors
with an Micro-controller. The most bridge
module with onboard voltage regulator motor
driver can be used with this motor that has a
voltage of between 5 and 35V DC or you can
choose the most precise motor driver module
from the wide range available in our Motor
driver category as per your specific
requirements.

6. Main Components-
 Micro-contoller 8051- 8051 microcontroller is
designed by Intel in 1981. It is an 8-bit
microcontroller. It is built with 40 pins DIP (dual
inline package), 4kb of ROM storage and 128
bytes of RAM storage, 2 16-bit timers. It consists of
are four parallel 8-bit ports, which are
programmable as well as addressable as per the
requirement. An on-chip crystal oscillator is
integrated in the microcontroller having crystal
frequency of 12 MHz. It is useful to monitor and
control the operations of machines in a
microcontroller. Hence, to connect it to other
machines, devices, or peripherals, it needs I/O
interfacing ports in the microcontroller interface.

7. Main Components-
 Motor Driver- Motor drivers acts as an interface
between the motors and the control circuits. Motor
require high amount of current whereas the
controller works on low current signals. So the
function of motor drivers is to take a low-current
control signal and then turn it into a higher-current
signal that can drive a motor.
L293D and ULN2003 are the most commonly used
motor Driver IC that is used in simple robots and
RC cars. A motor driver is undoubtedly something
that makes the motor move as per the given
instructions or the inputs (high and low).

8. Main Component-
 Voltage Regulator- A voltage regulator is a
circuit that creates and maintains a fixed output
voltage, irrespective of changes to the input
voltage or load conditions. Voltage regulators
(VRs) keep the voltages from a power supply
within a range that is compatible with the other
electrical components.

9. Main Components-
 Lock set- A lock set is the hardware and the
components that make up the locking or latching
mechanism that is usually found in doors or other
hinged object but can also include sliding doors and
drivers. But we are using the lock for arrest the motion
of rack at the one end. The push button will be released
at the end when the rack exceeds the marked position
and prevent the rack from sliding back. This button is
directly coupled with gear lever so that when the gear is
changed, the push button will be released.
 The Smart Lockbox for Car Key Management. The Big
Vault is a connected lockbox that holds the license plate
for key storage, tamper detection, accident notification,
car sharing, location tracking, and overall visibility of a
vehicle.
 In our Project we fix microcontroller with key locker to
detect or senses the brakes or seat belt is locked or not,
if not then car wheel brake does not allow to release.

10. Main Component-
 Display- A setting or presentation of something
in open view a fireworks display. A clear sign or
evidence exhibition a display of courage.
Ostentatious show worldly display.
 In our Project model we use two by six inch
Display.

11. Working Principle-
Automatic brake and Seat belt release system we
use AND gate logic system. In AND gate logic
system basic digital logic gate that implements
logical conjunction from mathematical logic – AND
gate behaves according to the truth table. A HIGH
output (1) results only if all the inputs to the AND
gate are HIGH (1). If not all inputs to the AND gate
are HIGH, LOW output results. So here two inputs
one is for locking the brake if any one of Key lock
or Seat belt is not able to giving a signals i.e, Driver
does not take precaution of seat belt then brake is
locked then signal is 0 or driver take precaution of
seat belt then input sending to the controller is in
signal 1. when input is 0 then motor is closed
where wheel condition is locked that shows in
display.

12. Advantages-
 An automatic braking system is an
important part of safety technology for
automobiles.
 Improves parking experience in hills.
 Quick Operation
 Very compact.
 Low cost

13. Conclusion-
In our project, hand brake is actuated
with the help of rack and pinion and
controller based on some conditions.
Sensors sense and provides signal to
the circuit board which directly drives the
motor. The rack and pinion gets
activated and lifts the hand and
disengages with the help of push lock
and spring tension. In future, this could
be developing by adding some of the
additional features and also automatic
hand brake will be used in all types of
automobiles at low cost.