Remote Accident Report System for High Ways Using Rf

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Remote accident reportsystem for highways using RF

PROJECT BASED ON EMNEDDEDSYSTEMS

DEPARTMENT OF ELECTRONIC AND COMMUNICATION

ENGINEERING, ANURAG COLLEGE OF ENGINEERING

PRESENTATIONBY

P. KRISHNA CHAITANYA


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INTRODUCTION

The aim of this project is to monitor the accidents

which occur on the highways using RF technology.The information of occurrence of the accident will be

transmitted to the control section wirelessly using RF

communication.

In the vehicle section, an accident switch is placed,

whenever the accident occurs, the information is

transmitted to the control section.


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EMBEDDED SYSTEMS

An embedded system is a computer system designed for

specific control functions within a larger system, often with real-

time computing constraints.

Embedded system contain processing core that are typically

either microcontroller or digital signal processors (DSP).

Embedded systems are designed to do some specific task

rather than be a general-purpose computer for multiple tasks.

An embedded system is not always a separate block - very

often it is physically built-in to the device it is controlling.

The software written for embedded systems is often called

firmware, and is stored in read-only memory or flash convector

chips rather than a disk drive.


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BLOCK DIAGRAM(VEHICLE SECTION)

MICRO

CONTROLLER

CONTROLLER

AT89S52

Power supply HT 12E Encoder

Accident

detection

circuit

RF TX

H-Bridge

MOTOR


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BLOCK DIAGRAM(MONITOR SECTION)

MICRO

CONTROLLE

R

AT89S52

POWER

SUPPLY

DECODER

RF RECEIVER

LCD

BUZZER


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SCHEMATIC VIEW OF TRANSMITER


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SCHEMATIC VIEW OF RECEIVER


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DESCRIPTION OFAT89S52

8K bytes of Flash, 256 bytes of RAM, 32 I/O lines, Watchdog timer,

two data pointers, three 16-bit timer/counters, a six-vector two-level

interrupt architecture, a full duplex serial port, on-chip oscillator, and

clock circuitry.

In addition, the AT89S52 is designed with static logic for operation

down to zero frequency and supports two software selectable power

saving modes.

The Idle Mode stops the CPU while allowing the RAM,

timer/counters, serial port, and interrupt system to continue functioning.

The Power-down mode saves the RAM contents but freezes the

oscillator, disabling all other chip functions until the next interrupt or

hardware reset.


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H BRIDE

An H bridge is an electronic circuit that enables a voltage to be appliedacross a load in either direction. These circuits are often usedin robotics and other applications to allow DC motors to run forwardsand backwards. H bridges are available as integrated circuits, or can bebuilt from discrete components


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The power supplies are designed to convert high voltage AC mains

electricity to a suitable low voltage supply for electronic circuits and other

devices. A RPS (Regulated Power Supply) is the Power Supply with

Rectification, Filtering and Regulation being done on the AC mains to get a

Regulated power supply for Microcontroller and for the other devices beinginterfaced to it.

POWER SUPPLY SECTION


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RF MODULE (TRANSMITTER & RECEIVER)

The RF module, as the name suggests, operates at Radio Frequency. Thecorresponding frequency range varies between 30 kHz & 300 GHz.This RF module comprises of an RF Transmitter and an RF Receiver.

The transmitter/receiver (Tx/Rx) pair operates at a frequency of 434

MHz .

An RF transmitter receives serial data and transmits it wirelessly through

RF through its antenna connected at pin4.

The transmission occurs at the rate of 1Kbps - 10Kbps.

The transmitted data is received by an RF receiver operating at the same

frequency as that of the transmitter.


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LCD DISPLAY

A liquid crystal display (LCD) is a flat panel display, electronic visualdisplay, or video display that uses the light modulating propertiesof liquid crystals(LCs). LCs do not emit light directly.

LCDs are available to display arbitrary images (as in a general-purpose

computer display) or fixed images which can be displayed or hidden, suchas preset words, digits, and 7-segment displays as in a digital clock. Theyuse the same basic technology, except that arbitrary images are made upof a large number of small pixels, while other displays have largerelements.
http://en.wikipedia.org/wiki/Flat_panel_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Video_displayhttp://en.wikipedia.org/wiki/Liquid_Crystalshttp://en.wikipedia.org/wiki/7-segmenthttp://en.wikipedia.org/wiki/Digital_clockhttp://en.wikipedia.org/wiki/Pixelhttp://en.wikipedia.org/wiki/Pixelhttp://en.wikipedia.org/wiki/Digital_clockhttp://en.wikipedia.org/wiki/Digital_clockhttp://en.wikipedia.org/wiki/Digital_clockhttp://en.wikipedia.org/wiki/7-segmenthttp://en.wikipedia.org/wiki/7-segmenthttp://en.wikipedia.org/wiki/7-segmenthttp://en.wikipedia.org/wiki/Liquid_Crystalshttp://en.wikipedia.org/wiki/Liquid_Crystalshttp://en.wikipedia.org/wiki/Liquid_Crystalshttp://en.wikipedia.org/wiki/Video_displayhttp://en.wikipedia.org/wiki/Video_displayhttp://en.wikipedia.org/wiki/Video_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Electronic_visual_displayhttp://en.wikipedia.org/wiki/Flat_panel_displayhttp://en.wikipedia.org/wiki/Flat_panel_displayhttp://en.wikipedia.org/wiki/Flat_panel_displayhttp://en.wikipedia.org/wiki/Flat_panel_displayhttp://en.wikipedia.org/wiki/Flat_panel_display


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It is possible to create the source files in a text editor such

as Notepad, run the Compiler on each C source file,

specifying a list of controls, run the Assembler on eachAssembler source file, specifying another list of controls, run

either the Library Manager or Linker (again specifying a list

of controls) and finally running the Object-HEX Converter

to convert the Linker output file to an Intel Hex File.

Once that has been completed the Hex File can be

downloaded to the target hardware and debugged.

KEIL Greatly simplifies the process of creating and testing

an embedded application.

SOFTWARE DESCRIPTION


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QUERIES

??

?


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Remote Accident Report System for High Ways Using Rf