Wireless Rash Driving Detection

Wireless Rash Driving
Detection

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Introduction
Wireless Rash Driving Detection
 To detect rash driving on highways and to alert the traffic authorities
wirelessly the speed details and any speed violation. Accidents due to rash
driving on highways are on the rise and people are losing their lives
because of others mistakes. In the present system, to detect rash driving
the police has to use a handheld radar gun and then aim at the vehicle to
record its speed.
 If the speed of the vehicle exceeds the speed limit, nearest police station
is informed to stop the speeding vehicle. This is an ineffective process as
after detecting one has to inform the same and a lot of time is wasted.

Block Diagram Of Transmitter

Block Diagram Of Receiver

Hardware Requirements
• Transformer
• Diodes
• Capacitors
• Resistors
• LEDs
• IR
• photodiode
• Transistor
• LCD
• Buzzer
• Relay
• Lamp
• 8051 series Microcontroller
• 2.4GHz Tx/Rx pair

Power Supply

Description Of Power Supply
 The circuit uses standard power supply comprising of a step-down
transformer from 230v to 12v and 4 diodes forming a Bridge Rectifier that
delivers pulsating dc which is then filtered by an electrolytic capacitor of
about 470microf to 100microF.
 The filtered dc being un regulated IC LM7805 is used to get 5v constant at
its pin no 3 irrespective of input dc varying from 9v to 14v.
 The regulated 5volts dc is further filtered by a small electrolytic capacitor of
10 micro f for any noise so generated by the circuit.
 One LED is connected of this 5v point in series with a resistor of 330ohms
to the ground i.e. negative voltage to indicate 5v power supply availability.

Internal Structure Of a Microcontroller - AT89S52/51

Photo Diode
 A photodiode is a type of photo detector capable of
converting light into either current or voltage, depending
upon the mode of operation.
 Photodiodes are similar to regular semiconductor diodes
except that they may be either exposed (to detect
vacuum UV or X-rays) or packaged with a window or
optical fibre connection to allow light to reach the
sensitive part of the device.

Liquid Crystal Display (LCD)
 Most common LCDs connected to the microcontrollers are 16x2 and
20x2 displays.
 This means 16 characters per line by 2 lines and 20 characters per line
by 2 lines, respectively.
 The standard is referred to as HD44780U, which refers to the
controller chip which receives data from an external source (and
communicates directly with the LCD.

LCD Background
 If an 8-bit data bus is used the LCD will require 11 data lines (3 control lines
plus the 8 lines for the data bus).
 The three control lines are referred to as EN, RS, and RW.
 EN=Enable (used to tell the LCD that you are sending it data).
 RS=Register Select (When RS is low (0), data is treated as a command).
(When RS is High(1), data being sent is text data ).
 R/W=Read/Write (When RW is low (0), the data written to the LCD).
(When RW is High(1), the data reading to the LCD).

Light Emitting Diode (LED)
 LEDs are semiconductor devices are made out of silicon.
When current passes through the LED, it emits photons
as a by product.
 Normal light bulbs produce light by heating a metal
filament until its white hot.
 LEDs present many advantages over traditional light
sources including lower energy consumption, longer
lifetime, improved robustness, smaller size and faster
switching

Buzzer
 Piezo Buzzer:
• This buzzer is an piezo type audio signalling device, which has a piezo
element and a oscillating circuit inside which oscillates the piezo brass base
plate, which when given voltage difference produces sound of a predefined
frequency.
 Features:
• These high reliability piezo buzzers are applicable to general electronics
equipment. Compact, pin terminal type Piezo buzzer with 4 KHz output.
• Pin type terminal construction enables direct mounting onto printed circuit
boards.

Working Principle
 IR sensors to detect the presence of a vehicle.
 A set point consists of a pair of sensors comprising of an IR transmitter
and an IR receiver, each of which are installed on either sides of the road.
 Whenever IR rays are interrupted by a vehicle during first sensor the
count up timer is started.
 When the other IR sensor senses the presence of vehicle, the count up
timer is stopped.
 The speed limit set by the device is kept at the very location depending
upon the traffic.

Working Principle
 The time taken by the vehicle to travel from one set point to the other is
calculated by a microcontroller program.
 Based on that time it then calculates the speed.
 The Seven segment display is used to display the speed of the vehicle.
 If the vehicle crosses the speed limit, a buzzer sounds alerting the police
both at the location and wirelessly at the control room.
 The microcontroller is used to monitor the all control operations needed.

Advantage:
 They reduce the risk of accidents.
 It is easy to implement.
 It reduces the effort of many men.

Disadvantages:
 Sometimes the circuit got failure and causes various problems

Applications
 It uses in highways to avert accidents.
 It alert traffic authorities about the speed of vehicle.

Conclusion
 The speed checker for highways‖is an emerging field and there is a
huge scope for research and development. Wireless Rash Driving
Detection can be further advanced by using a CCTV camera in the
circuit. Whenever any vehicle crosses speed limit, camera captures
the image of number plate and through transport database finds
the address of the owner and sends fine.

Wireless Rash Driving Detection

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