Automatic speed controller in real time vehicles.

 
Group members-
Binil George
Gokul K G
Jinto George
Jithin George
Internal Guide-
Asso.prof Sreeraj K P
Mangalam college of engineering
ECE dept

 Objective
 Relevance of the project
 Introduction
 Block diagram level of explanation
 Flow chart/ algorithm
 Circuit diagram
 Hardware used
 Software used
 PCB layout & Implementation
 Key issues
 Results of the work
 Advantages & Applications
 Future scope
 Conclusion
 References
09/02/2015 AUTOMATIC SPEED GOVERNING 2

 Automatic Speed Governing automatically controls
the speed of the vehicles at school and hospital zone
etc.
 To avoid accident of vehicles at speed limit zones.
 To help the passengers to cross the road safely
without facing any danger from high speed vehicles.
 This project can be used to avoid the rash driving of
the drivers.
09/02/2015 AUTOMATIC SPEED GOVERNING
3

 By using this system we can effectively controls the
speed of the vehicle in different zones.
 We can reduce the accidents and thus we can save
many lives and valuable properties.
 We can controls the rash driving of the drivers.
4

 Every year, we find more and more road accidents due to
increased traffic on the roads.
 Nowadays people are driving very fast; accidents are
occurring frequently, we lost our valuable life by making small
mistake while driving (school zone, hills area, and highways).
 So this system can be used to avoid such kind of accidents
and to alert the drivers and to control their vehicle speed.
 The project is composed of two separate units: zone
transmitter unit and receiver unit.
 Once the information is received from the zones, the
vehicle’s embedded unit automatically reduce the speed
according to the zone.
5

 TRANSMITTER
09/02/2015
AUTOMATIC SPEED GOVERNING 6

 RECEIVER
7

 The speed of vehicles is controlled by the RF
communication method.
 Transmitter in speed restriction zones.
 RF receiver in the vehicle.
 When a vehicle enters this zone, then these transmitters
will send continuous coded signal to those vehicle.
 The receiver in vehicle will receive those signals and
then micro controller.
 Microcontroller controls the airflow to the carburetor
using a stepper motor and speed is reduced.
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09/02/2015

 Transmitter
10

 Receiver
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1. Atmel micro controller
 AT89C51 is the 40 pins, 8 bit Microcontroller
manufactured by Atmel group.
 The AT89C51 is a low-power, high-performance CMOS
8-bit microcontroller.
 It has 4kb on chip ROM and 128 bytes internal RAM
and 32 I/O pin as arranged as port 0 to port 3 each.
 All four ports in the AT89C51 are bidirectional.
12

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 The operating voltage of AT89C51 is 5v.
 Its operating frequency is 0 Hz to 24 MHZ.

2. ZigBee
 ZigBee is a low-cost, low-power, wireless network.
 Due its low power consumption limits transmission
distances to 10–100 meters line-of-sight.
 ZigBee chips are typically integrated with
microcontrollers that have between 60-256 KB flash
memory.
 ZigBee is used for short-range low-rate wireless data
transfer.
09/02/2015

 ZigBee has a defined rate of 250 kbit/s, best suited for
the data transmissions from a sensor or input device.
 ZigBee is simpler and less expensive than other
wireless networks.
09/02/2015

3. LCD DISPLAY
 16x2 LCD(Liquid Crystal Display) electronic display
module is used here as display device.
 A 16x2 LCD means it can display 16 characters per line
and there are 2 such lines.
 This LCD has two registers , namely , Command and
Data registers.
 Economical, easily programmable, have no limitation of
displaying special &even custom characters.
09/02/2015

 LCDs are used in a wide range of applications including
computer monitors, televisions.
 The LCD screen is more energy efficient than others.
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4. PIC MICROCONTROLLER
 PIC 16F877 is one of the most advanced microcontroller
from Microchip.
 PIC stands for Peripheral Interface Controller.16 stands
for mid range series and F stands for flash memory.
 High performance RISC CPU.
 Low power- high speed CMOS flash/EEPROM.
 PIC16F877 has 5 basic input/output ports-Port
A,B,C,D,E
 3 timers,2 CCP modules and 10bit, up to 8 channel A/D
converter is used in it.
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 Easy to use ,because only 35 single word instructions to
learn.
 Maximum operating frequency is 20MHz.
 Wide operating voltage range (2.0 – 5.56)volts.
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5. STEPPER MOTOR
 A stepper motor is an electromechanical device which
converts electrical pulses into discrete mechanical
movements.
 Stepper motors work on the principle of
electromagnetism.
 Stepper motor is similar to an actuator, which is the
movable part.
 The speed of the motor shafts rotation is directly related
to
the frequency of the input pulses.
 The length of rotation is directly related to the number of
input pulses applied.
09/02/2015

 Stepper motor performance is strongly dependent on the
driver circuit.
 The operating voltage range is 12 volts.
21

6. POWER SUPPLY
 To provide power to the entire system.
 12v power supply is used for stepper motor.
 5v power supply is used for microcontroller and other
devices.
22

1. PICC COMPILER
 provides a complete integrated tool suite for developing
and debugging embedded applications running on
Microchip.
 contain Standard C operators and Built-in Function
libraries that are specific to PIC.
 It providing developers with a powerful tool for accessing
device hardware features from the C language level.
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2. PIC SIMULATOR IDE
 PIC Simulator IDE is a powerful application that supplies
user-friendly graphical development environment.
 It contains basic compiler, assembler, disassembler and
debugger.
 PIC Simulator IDE currently supports the
microcontrollers from the Microchip of 12F and 16F
family.
24

3. Orcad
 It is a PCB design tool.
 It provide easy access to company component
databases and part information, so designers can reduce
the amount of time they spent.
 Provides access to all components and offering greater
flexibility when choosing design components.
 It boosts schematic editing efficiency of complex designs
through hierarchical and variant design capabilities.
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 The range of the ZigBee transmitter is less which is 10m.
 This project consists of mechanical section, which is
difficult to implement
 It is difficult to control the airflow to the carburetor of the
vehicle.
 The modifications given for the conventional carburetor
or fuel injection systems are quite difficult.
09/02/2015

 The speed of the vehicle decreases automatically when
it reaches to the ZigBee range.
 We can control the over speed and rash driving of the
drivers.
 We can reduce the accidents and thus we can save
many lives and valuable properties.
27

 The cost of the system will be very less compared with
its application.
 To help the passengers to cross the road safely without
facing any danger from high speed vehicles.
 This system helps to avoiding the rash driving of the
drivers.
 The vehicle will move only with the designed speeds
corresponding to the zones
28

 We can modify the system with the help of GPS to
identify the zones.
 We can also modify the system with efficient braking
system in association with air flow control to the
carburetor.
 This system can be more effectively used for any kind of
automobiles such as lorries, buses, cars, bikes etc.
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 By using this system we can effectively control the speed
of the vehicle according to different zones.
 This system can be implemented in any kind of vehicles.
 By using this system we can control the over speed and
the rash driving of the drivers.
 We can use this system in highly populated regions and
thus we can decrease the effects of accidents.
30

 Telaprolu,m.k,sarma,V.V.;.;ratankanth,E.K.;Rao,S.
N.;Banda,v.,vehicular Electronics and safety (ICVES),
IEEE international conference pune (2009).
 Gangadhar, S.; R N shetty Inst. Of Technol, An
intelligent road traffic control system, IEEE conference
publication kahargpur (2010)
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THANK YOU
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Automatic speed controller in real time vehicles.

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