loco position tracking system

8/6/2019 Loco Position Tracking System

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LOCO POSITION TRACKINGSYSTEM

J.Jyothirmai C.R.K Prasad0981D5505 (ECE Head)Internal guide


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CONTEXT OF MY PRESENTATION

Introduction

Block diagram Methodology

Requirements of the system

Scope of the project


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INTRODUCTION

This proposed project is required by the Indianrailways, to locate the Train position under thefog conditions.

In this Project it is proposed to design anembedded system which is used for trackingthe position of any Train by using GlobalPositioning System (GPS) and Global systemfor mobile communication (GSM).

The current design is an embeddedapplication, which will continuously monitor amoving Train and report the status of the Train.


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BLOCK DIAGRAM OF LOCO

POSITION TRACKING SYSTEM


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METHODOLOGY

The proposed system when installed inthe train, the position (latitude andlongitude) of the train is identified usingGPS.

This information is continuously sent asSMS messages to the Personal Computer at thereceiving end i.e. Indian Railways.

The information is displayed on the hyper-terminal

mentioning the train number, coming station orarrived station, Latitude, Longitude and Time.

. contd..


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METHODOLOGY

The same information can be used to show theroute map of the Train position along the Route fromthe starting point to the destination point.

An Example of the route map is shown below:


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REQUIREMENTS OF THE SYSTEM

In this project, AT89S52 (or) Amega16LMicrocontroller will be used to interface tovarious hardware peripherals.

A GSM modems are used to send the position fa Train from remote place and to receive thatinformation and interface to PC.

A GPS receiver continuously gives the data

indicating the position of theT

rain. The programming language used is C andthe Integrated development environment (IDE)used is code vision AVR.

contd..


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REQUIREMENTS OF THE SYSTEM

A LCD display is used to indicate the positionwithin the module

The design uses the RS232 protocol for serialcommunication between the modems and themicrocontroller. Hence a serial driver IC isused for converting TTL voltage levels to

RS232 voltage levels. Antennas used for GPS and GSM modems

are of external and active type antennas

EEPROM is used to store the mobile number


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SCOPE OF PROJECT

Study of modules:AT89S52 Microcontroller

GPS Receiver

GSM Modem Design of schematic

PCB Layout design

Assembling of modules Programming using C

Testing the System


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SEQUENTIAL DIAGRAM FOR

TRACKING THE POSITION OF LOCO


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NMEA PROTOCOL

The NMEA 0183 standard defines an electricalinterface and data protocol for communicationsbetween marine instrumentation.

NMEA 0183 devices are designated as eithertalkers orlisteners, employing an asynchronousserial interface with the following parameters:

Baud rate: 4800

Number of data bits: 8 (bit 7 is 0)

Stop bits: 1 (or more)

contd..


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NMEA PROTOCOL

General Sentence Format: All data is transmitted in the form ofsentences.

Only printable ASCII characters are allowed, plusCR(carriage return) and LF (line feed).

Each sentence starts with a "$" sign and ends with as shown below:

$ttsss,d1,d2,....

tt - talker identifiersss - sentence identifier

d1,d2,. - data fields


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NMEA PROTOCOL

Some NMEA messages are GGA,GSV,GLL etc. ExampleGLL Geographic Position Latitude/Longitude

$--GLL,llll.ll,a,yyyyy.yy,a,hhmmss.ss,A*hh

l - Latitudea - N or S (North or South)

y - Longitude

a - E or W (East or West)hhmmss.ss - Time (UTC)

A - Status A - Data Valid, V - Data Invalid

hh - Checksum


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THANK YOU

loco position tracking system

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