quick prototyping of real time monitoring system using prote

8/13/2019 Quick Prototyping of Real Time Monitoring System Using Prote

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Quick Prototyping of Real Time Monitoring System Using Proteus Development Tool: a Case for Self

Diagnostic Traffic Light System

1Mbonu ekene Samuel, 2 Okwu Patrick Ikechukwu, 3Ezekwe Chinwe Genevra, 4!uzie "chechukwu Chiemezuwo

1, 2, 3, 4 Electronics Development Institute, Awka

National agency for Science an Engineering Infrastructure !NASENI"mbo#eke#$am%&ahoo'com,okwu(i%)mail'com,norakin)chi%&ahoo'com, a!uzia$o*tbiz%&ahoo'com

!stract

"n this paper# a self $iagnostic system for

maintenance of traffic light system is $evelope$%

The &uality of light pro$uce$ !y the light emitting

element of traffic light system at remote site is

monitore$ via graphical user interface '(U")% The

remote system*s status report o!taine$ from the

(U" helps the maintenance operator's) to change

or repair the traffic light hea$ at appropriate

time% The remote site consists of a prototype T+

,unction traffic light# controlle$ !y an intelligent

processor 'microcontroller) -hich also monitors

an$ $iagnoses fault's) in the system an$ alerts the

central server via (SM mo$em interface$ to it%

The microcontroller emulates the attention 'T)

comman$ of the mo$em an$ uses it to sen$ fault

alert in form of short message service 'SMS) to the

host server% The server has (SM receiver

interface to it through a smart level converter'ma. /0/)% The tools use$ in the $evelopment of

the prototype T+1unction traffic light inclu$e

proteus 2irtual Simulation Mo$ule Soft-are

Development 3it '2SMSD3) use$ to $evelop the

(U" an$ the host server# macro integrate$

$evelopment environment'M"D4) use$ to e$it an$

assem!ly the soft-are program% 5ellon

programmer -as use$ to transfer the assem!le$

program to the microcontroller chip% The results

sho-e$ that proteus professional# though

primarily a virtual $evelopment tool can also !e

use$ for real time $evelopment of a prototype

em!e$$e$ system# re$ucing $esign+market time%

3ey5or$s: 6self $iagnostic# graphical user

interface# proteus 2SM# real time $evelopment#

prototype em!e$$e$ system%7

I# IN$%&D'($I&N

$)e wor (rotot&(e comes from t)e *atin wors

(roto, meaning ori)inal, an t&(u$, meaning*orm or

mo+el# In a non+tec)nical contet, a prototype is an

especially representative eample of a given

category# In software evelopment, a prototype is a

ruimentary working moel of a prouct or

information system, usually -uilt for emonstration

purposes or as part of t)e evelopment process# In t)esystems evelopment life cycle !SD*(" prototyping

moel, a -asic version of t)e system is -uilt, teste,

an t)en reworke as necessary until an accepta-le

prototype is finally ac)ieve from w)ic) t)e

complete system or prouct can now -e evelope# In

prototype+-ase programming, a prototype is an

original o-.ect/ new o-.ects are create -y copying

t)e prototype# In )arware esign, a prototype is a

0)an+-uilt0 moel t)at represents a manufacture

!easily replica-le" prouct sufficiently for esigners

to visualie an test t)e esign 1#

$)e term 5maintenance6 means to keep t)e e7uipment

in operational conition or repair it to its operational

moe# 8aintenance )as ma.orly -een applie in

prouction system w)ere t)e main o-.ective is to

)ave increase availa-ility of prouction systems,

wit) increase safety an optimie cost 1#

Accoring to 1, t)e maintenance strategies t)at are

commonly applie in plants inclue -reak own

maintenance, preventive or sc)eule maintenance,

preictive or conition -ase maintenance,

opportunity maintenance an esign out

maintenance# $)e e7uipment uner -reakown

maintenance is allowe to run until it -reaks own

-efore repairing it# $)is strategy is suita-le for

e7uipments t)at are not critical an )ave spare

capacity or reunancy availa-le# In preictive

maintenance, t)e conition of t)e system is

monitore# (onition monitoring !(8" etects an

iagnoses faults an it )elps in planne maintenance

1
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2/11

-ase on e7uipment conition# $)is conition -ase

maintenance strategy or preictive maintenance is

preferre for critical systems an for suc) systems,

-reakown maintenance is to -e avoie# A num-er

of (8 tec)ni7ues suc) as vi-ration, temperature, oil

analysis, etc#, )ave -een evelope, w)ic) guie t)e

users in planne maintenance 1# None of t)ese

tec)ni7ues can -e applie irectly to traffic lig)t

system w)ose failure can -e as critical as prouction

plant since it can lea to loss of life, .o-, even

property# 9ust imagine a fire fig)ter s7ua -eing

trappe in a traffic )ol up as a result of traffic lig)t

malfunction or failure# 8aintenance culture )as -een

very poor wit) respect to traffic lig)t system,

evience -y lack of or scanty pu-lications an

conference proceeings on t)e su-.ect matter# $)is

paper t)erefore seeks to evelop a self iagnostic

system t)at will monitor t)e state of traffic lig)tsystem an sen situation report to maintenance

operators# $raffic lig)t )ea is use as a case stuy

Self+iagnosis, a term traitionally use in meical

science to mean t)e process of iagnosing or

ientifying meical conitions in oneself, )as in

recent years -een applie in science an engineering

for fault ientification an correction# Aut)ors of 3

evelope low )arware over)ea self+iagnosis

tec)ni7ue using ree+solomon coes for self+

repairing c)ips# $)e circuit uner +ia)no$i$ is

assume to -e compose of a large num-er of fiel

repaira-le units !:%'s", w)ic) can -e replace wit)spares w)en t)ey are foun to -e efective# 9en+

()ie) ;e) et al in 4 propose a systematic

approac) in testing flas) memories# incluing t)e

evelopment of marc)+like test algorit)ms, cost+

effective fault +ia)no$i$ met)oology, an -uilt+in

$el*+test !


3/11

:igure 1G virtual com port figure 2G Interfacing com port to microcontroller

:igure 3G conceptual arc)itecture moel of t)e $raffic monitoring System

3

Intelligent Agent Control

Program

Data base Transmitter

protocol

Embedded

API

Interface

GSM MODEM

SMS

Cloud

Embedded

API

Interface

Managers

mobile phone


4/11

"""% Description of the Self $iagnostic

traffic light System

:igure 3s)ows t)e conceptual arc)itecture moelof

t)e traffic lig)t monitoring system wit) low cost

grap)ical user interface# 'I an )is mo-ile station#

8 alarm is also activate#

$)e manager upon receiving t)e alert

instructs t)e tec)nician to go an rectify t)e

faults!s" at t)e remote site# After clearing

t)e fault!s", t)e tec)nician or operator resets

t)e system ena-ling t)e intelligent controller

to sen situation report to t)e manager

-efore continuing its operation#

:igure 4G prototype traffic lig)t system

"2% Technical Solution an$ Pro1ect

Details

% "mplementation of traffic light system at

remote site%

4


5/11

:igure =G t)e sc)ematic esign of t)e traffic lig)t

system#

:igure = s)ows t)e sc)ematic esign for

implementation of t)e traffic lig)t system at remote

site an is mae up of t)e following components#

The "ntelligent Controller: Atmel BCc=1

microcontroller is use# It )as 4 inputoutput ports, 32

inputoutput pins, serial communication port, 4F- of

internal %&8, 12B k- of internal %A8 among ot)er

features 11# in C is t)e %ESE$ pin# It is an input

an is active )ig) !normally low"# 'pon applying a

)ig) pulse to t)is pin, t)e microcontroller will reset

an terminate all activities# $)is is often referre to

as a power on reset# In orer for t)e %ESE$ input to

-e effective, it must )ave a minimum uration of 2

mac)ines cycles 12# Now t)e voltage c)arge in an

%( circuit is given -y

c J !1 K eL+t%(" 1CMMMMMM !1" 13

H)ere %( J time constant

t J 2 mac)ines cycles

now J cc J =v

c J voltage across (3 w)ic) is usually less t)an

cc -ecause of isc)arging action of t)e capacitor

t)roug) resistor %1#

8ac)ine cycle J 1value of crystal128? 2

1mac)ine cycle J 11#=C2 1L@ 12 1L@ J

C21#@ F?

8ac)ine cycle J 1C21#@ F? J 1#B=sec

2mac)iunes J 2 1#B= J 2#1s

:rom !1" c J 1 K eL+t%c

eL+t%c J !1 K c"

lneL+t%c J ln !1 K c"

c J +t%!1 K c"

*et %1 J 1k, t)en c3 J 1O, t J 2#1s

$)e crystal oscillator !P1" provies operating

fre7uency of t)e microcontroller# $)e 11#=C28?

value was c)osen so t)at S8A%$ interface -etween


6/11

t)e controller an stanar moems can -e ac)ieve

12# (apacitors (1 an (2 provie sta-ility to t)e

crystal uring operation#

The relay "nterface "C# UL8/990: t)is is use to

ac)ieve a neat an smoot) interface -etween t)e

controller an t)e ac relays# 8ore information a-out

t)e c)ip can -e gotten from 14#

The traffic ul!s: 22vac, 4H -ul-s are use as

lamp )eas# $)ey are interface to t)e controllers

t)roug) t)e relays#

(SM mo$em: Alt)oug) t)ere are >S8 moems

customie for em-ee applications, Sagem p)one

!8y+P= " was use in t)is work -ecause of its low

cost an ot)er avantages enumerate in 1=#

The fee$!ack 4lement: :igure @ s)ows t)e

epane circuit iagram of t)e fee -ack element#

:igure @G epane circuit iagram of fee-ack element#

It is mae up of resistors !%2+%, eac) 1 kilo o)ms"

connecte in series wit) a lig)t epenent resistor

!*D%"# $)is arrangement forms a voltage ivier an

t)e output is fe into t)e input of an operational

amplifier !op+amp"# $)e ot)er input of t)e amplifier

is reference to 2# $)e value of t)e *D% on total

arkness is a-out 2 kilo o)ms# So t)e input to t)e op

amp at total arkness is

op J !2 !2Q1""R=

!


7/11

J 3#33v#

$)is will force t)e op+amp output to )ig)# Now w)en

lig)t from t)e traffic lamp )ea falls on t)e *D%, its

resistance reuces forcing t)e op amp input to rop

-elow 2v t)ere-y making t)e output low# It is t)ese

c)anges t)at t)e intelligent agent monitors an makes

ecision -ase on t)e rule em-ee in t)e

microcontroller

% ;ault "$entification

4ac) time t)ere is a mismatc) of input pattern an

epecte output fee-ack pattern, t)e controller sens

sms to t)e )ost computer an also to t)e mo-ile

p)one of t)e manager# $)e sms contains t)e state

coe of t)e pattern in 7uestion, t)e input pattern an

real+time fee-ack pattern# $)e )ost computer also

)as ata -ase containing t)e vectors of input pattern

an epecte output fee -ack pattern# :ault

ientification is one -y complementing t)e real+time

fee-ack pattern an using t)e result to activate t)e

virtual traffic lig)t# $)e )ost computer uses t)e input

pattern to etract t)e epecte output result an

isplay it on *(D# $)us, -y reaing t)e information

on t)e *(D an o-serving t)e virtual traffic lig)t, t)e

manager can easily ientify t)e fault!s"#

C% Soft-are "mplementation

$)e flow c)art t)at implements t)e program control,

monitoring an sms alert is s)own in figure C# Note

t)at fee -ack is connecte to port1 !1" an output

-ul-s to port !" of t)e microcontroller as s)own

in figure 3# N is use to represent states, i#e, NJ K

=#

D% "mplementation of (raphical User "nterface

:igure G >'I for $raffic *ig)t 8onitoring

:igure s)ows t)e >'I at t)e )ost computer# It

comprises *(D isplay unit, t)e virtual traffic lig)t)eas, >S8 moem receiver, -uer alarm, all

interface to intelligent microcontroller# $)e

controller receives t)e sms fault alert t)roug) t)e

receiver, etracts an interprets it an t)en, isplays

t)e result on t)e *(D# $)e present state of t)e traffic

lig)t )eas at remote site is replicate -y t)e virtual

)eas# :igure B s)ows t)e flow c)art for fault

"


8/11

iagnosis at manager6s )ost computer#

:igure BG flow c)art for fault iagnosis at )ost

computer

#

$tart

Initiali%e the s&stem

An& fa'lt

alert(

Displa& defa'ltmessage

Chec) for sms fa'lt alert

E*tract the fa'lt

message

+E$

,-

,- +E$

Displa& fa'lt alert on .CD/ on

alarm

Displa& the fa'lt on the 0irt'al traffic light

abd

Is

s&stem

reset(


9/11

:igure CG compresse flow c)art for remote site implementation

E# Test an$ Result#

$tart

Initiali%e the s&stem

An&

mismatc

h(

$et ,

$end o'tp't pattern for state , to

P

ait for appropriate Time/Tn

P't the s&stem on hold

$end sms to manager

5a'lt

cleare

d(

Is

,(

Collect feedb) and chec) for

mismatch

$et ,

Increment ,

+E$

,-

,-

+E$

,-

+E$


10/11

$)e complete traffic lig)t system was teste an t)e

result ta-ulate as s)own in ta-le 1#

$a-le 1G summary of test an result

$est Epecte %esult %esult o-taine

&pen an

run t)e

>'I at

)ost

computer#

$)e >'I s)oul

isplay 5$raffic lig)t

monitoring system6

wit) %e an >reen

lig)ts s)owing as

epicte in figure #

$)e >'I isplaye

5$raffic lig)t

monitoring system6

after 2 secons# $)e

%e an >reen

lig)ts also came on#

ower on

t)e traffic

lig)t

control

system at

t)e remote

en#

$)e system s)oul

initialie an sen

sms status report to

)ost computer#

$)ereafter system

s)oul start working

accoring to state

transition ta-le 1#

$)e >'I i

receive t)e status

report after 1

secons as s)own in

figure 1#$)e

system starte

working accoring

to ta-le 1#

Disena-le

%ED -ul-

in t)e

N&%$?

irection

using

simulator

switc),

SH1#

$)e system at remote

en s)oul sen error

report to t)e )ost

computer an mo-ile

p)one of t)e

manager,

5Q234B@B@33CB6,

an put t)e traffic

lig)t on )ol#

$)e )ost computer

an t)e p)one wit)

t)e mo-ile num-er

6Q234B@B@33CB6

receive sms error

report# All t)e

traffic lig)ts went

off even t)oug)

t)ere was still

power in t)e

system#

Deactivate

t)e switc)

SH1 an

reset t)e

system at

remote site

$)e remote system

s)oul sen status

report to )ost

computer an

manager6s mo-ile

p)one# $)ereafter, t)e

system s)oul start

working normal#

$)e manager an

t)e )ost computer

receive sms status

report 1= secons

after resetting t)e

system at remote

site# $)e remote site

also starte working

normal#

# (&N(*'SI&N

uick prototyping )elps to reuce esign+market

time# roteus S8 )as in-uilt capa-ilities t)at ena-le

fast em-ee system prototyping# $)ese capa-ilities

can -e eplore# $)e com port an t)e approac) use

in t)is work can -e employe in ot)er system

evelopment#

%eferencesG

1 Felly, Ant)ony, T8anaging maintenanceresourcesU,


11/11

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quick prototyping of real time monitoring system using prote

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