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7/23/2019 Electronic Code Lock
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MICROPROCESSOR & MICROCONTROLLER
DIGITAL CODE LOCK
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INTRODUCTION
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Digital Code Lock using PIC16F627 is a basic control system
with an ability that allows the rightful user to deloy latformto any roerty that re!uire simle assword rotection"
#his code can be changed by the user" #his circuit iseminently suitable as a digital code lock"
Digital code lock is a tye of lock in which a se!uencenumbers is used to oen the lock"
#his tye of lock use numerical code for authentication wherethe correct code must be entered in order for the lock to
deacti$ate"
#he lock can be use with an outdoor gate or a normal door"#he functionality of this lock imlemented in software"
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%hen the correct code is entered it will oen the
door" #he signi&cant of this ro'ect is &rsteliminating the need for a key"
%hen there is no key( it will allow each erson wholi$es at a residence to enter home without a key"
#he lost and forgotten keys are roblems of theast"
)ence using the digital code lock it will reduce the
risk and liability of keys falling into wrong hands asa result being stolen or dulicate"
#he digital code lock( changing access code is morecost e*ecti$e then the rocess of changing all
keyed lock"
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PROBLEMSTATEMENT
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#here are great $arieties ofdigital code locks" +enerally
seaking( they can beclassi&ed into scores of tye(
such as electronic lock(&ngerrint lock( card lock
biological lock( etc"
#his kind of lock cana$oiding the roblems
caused by the coying ofkeys"
It is because the keys eolecarry ha$e become burden
most of the time( but bycontrast eole need only toremember a set of codes forelectronics locks and don,tha$e to carry any key( thus
freeing themsel$es from
worries"
-n the remise that it,s safetyis high( it,s another featurewithout key is getting moreand more fa$our of eole"
.mong them the mostractical and the most
oulari/ed one come todigital code lock"
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OBJECTIVES
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#heob'ecti$es
of ourro'ect arelisted asabo$e0
#o a$oid anycrimes
eseciallystealing
acti$ities"
#o hel usersand gi$e
them fa$ourto go
anywhere"#o design akeyless door
entry byusing
electronicdigital lock
code"
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SCOPE
OF
PROJECT
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Pro'ects do not needcomle and not too
short according to thestudy and it shouldrelate to the study
basic idea andoeration of Digital
Code Lock"
#he ro'ect identi&es thesuitable tye of PIC
microcontroller for thero'ect to de$eloed
interfacing link betweenhardware circuit and
software rogramming"
#he ro'ect dislayedthe code and signal(when success LCD
screen dislay codeacceted,"
#he ro'ect roducedmust in$ol$e the use of
comonents andcircuits ha$e been
studied andunderstood"
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PROJECTIMPLEMENTATION
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Circuit Design and Drawing
- Research the circuit
- Stud the c!"#!nent and "ateria$
- Si"u$ate the circuit
- C!nstruct the circuit
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Pr!gra""ing the PIC
- Se$ect the $anguage t! use %!r"icr!c!ntr!$$er
- rite the #r!gra" c!de
- De'ug and chec( the err!r
- C!"#i$e the c!de
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)!ard C!nstructi!n- Drawing the circuit *Pr!teus S!%tware+
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- iring circuit *#r!t!'!ard+
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BLOCK DIAGRAM
E$ectr!nic C!de L!c( has '!th hardware and
s!%tware #arts, igure 'e$!w sh!ws '$!c(
diagra" !% the #r!.ect/
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FLOW CHART
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CONCLUSION
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%hen we comleted thisro'ect( we had learned
and understand the
rocess of constructingthe Digital Code
Lock which containedhardware and softwarede$eloment" %e alsoknow and understandthe microcontroller PICand how to imlement
it on my ro'ect"
Designing code lock$ery interesting for us
where we can getin$ol$e in
rogramming
en$ironment seriously"
-ur digital code lockerformed as eected"
%e were able toimlement all the
functions seci&ed in ourroosal"
#he biggest hurdle wehad to o$ercome with
this ro'ect wasinterfacing the
microcontroller with thehardware comonents"
%e feel that this digitalcode lock is $ery
marketable because itis easy to use(comarati$ely
ineensi$e due to low
ower consumtionand highly reliable"
#his digital code lock istherefore articularlyuseful in alicationssuch as hotel room
door locks( residentialhousing and e$en
o3ce buildings"
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RECOMMENDATION
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#here are fewsuggestionsaear aftercomleting
se$eral stages ofthis ro'ect
based on someroblems that
we &nd0
Digital code lock isuseful
in society" #herefore(it should be
eanded so that thecommunity can
use where$er theyare as well as usinga code lock on
the $ehicle or thelike"
Digital code lock mayneed to limit the
numberof assword entry
attemts to reducethe risk for broken5
in assword"
For the sake of thefuture( digital code
lock should be addedwith siren when ha$ea burglary assword"
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REFERENCES
012 Ti" i$"shurst3 Designing E"'edded Sste"s with PICMicr!c!ntr!$$ers3 4nded, 5nited Kingd!" 1667,
0429ar#rit Singh Sandhu3 Ma(ing PIC Micr!c!ntr!$$er Instru"ents &
C!ntr!$$ers3 New :!r(3 167;,
0>6,
0?2 M(e Pred(!3 Pr!gra""ing and Cust!"i@ing the PIC Micr!c!ntr!$$er3
>,
02 Di Basi!3 i$"shurst3 I'rahi"3 M!rt!n3 )ates3 B, S"ith3 D,, S"ith3 and
9e$$e'uc(3 PIC Micr!c!ntr!$$ers Kn!w It A$$3 5nited Kingd!"3 167;,