In
te
r
n
ation
a
l Jou
rn
al
o
f Po
we
r
Elec
tron
ic
s an
d
D
r
ive S
y
stem
(IJ
PED
S
)
V
o
l.
10, N
o.
4, D
e
c
e
m
ber
201
9,
pp.
1923~
19
31
ISSN: 2088-
8694,
DOI
:
10.11591
/ijpeds.
v10.
i
4.pp1923-1931
1923
Jou
rn
a
l
h
o
me
pa
ge
:
ht
tp:
//i
a
e
score
.
com
/
j
o
u
r
na
l
s
/
i
n
d
e
x
.
p
hp/IJ
PED
S
Design pro
totype o
f a smart ho
us
e
h
old touch sensitive locke
r
security system base
d on GSM technology
Moh
a
m
m
ad
Z
e
yad
,
Su
smita Gh
osh
, S.
M. M
asu
m
A
h
m
ed
Depart
emen
t
o
f
E
lectri
cal & Elect
ron
i
c E
ngi
neeri
n
g
,
A
m
e
ri
can In
ternat
io
nal Unive
r
s
i
t
y
-Bang
l
ad
esh
, Bang
l
ad
esh
Art
i
cl
e In
fo
ABSTRACT
A
r
tic
le hist
o
r
y
:
R
e
c
e
i
v
e
d
Dec
1
8
,
2
018
Re
vise
d Jan
2
6
, 2019
A
c
c
e
pte
d
J
u
l
5
,
2019
Th
is
p
aper
i
llust
rates
a
p
o
rtab
le
d
om
estic
l
o
c
ker
secu
rit
y
s
y
s
t
em
w
hi
ch
i
s
bas
e
d
o
n
G
S
M
(
Gl
ob
al
S
y
s
tem
fo
r
Mo
bile
C
o
m
m
u
ni
catio
ns
)
tech
nol
o
gy
.
A
han
d
craf
ted
low-cos
t
t
o
u
ch
s
ensit
i
v
e
b
ox
i
s
d
e
si
g
n
ed
(
us
in
g
Ver
o
bo
a
r
d)
f
or
th
e
p
r
oject
w
hic
h
i
s
on
e
of
t
h
e
m
ost
attractiv
e
featu
r
es
o
f
t
h
e
s
yste
m
.
T
he
sy
st
e
m
w
ill
operat
e
i
n
a
w
a
y
that
i
f
th
ere
i
s
a
ny
u
nex
p
ected
u
s
er,
tri
e
s
to
to
uch
any
po
rtion
of
t
he
t
ou
ch
s
ensiti
ve
b
ox
,
a
f
eed
back
s
ys
tem
w
i
ll
be
tu
rned
o
n
i
m
m
e
d
i
at
ely.
T
he
f
eed
back
s
y
s
t
e
m
w
i
ll
a
l
e
rt
t
he
p
rop
e
rty
ho
lde
r
abo
u
t
the
u
n
ex
pect
ed
u
s
e
r
by
s
en
din
g
S
MS
(
Sho
r
t
M
e
s
s
age
Serv
ice
)
and
turni
ng
on
a
n
a
l
arm
sys
t
em.
T
h
e
al
arm
syst
e
m
w
ill
be
t
urned
off
o
n
l
y
i
f
i
t
receiv
e
s
a
sp
ecific
S
M
S
f
r
o
m
t
h
e
p
ro
pert
y
ho
ld
e
r
.
Th
is
s
y
s
te
m
n
o
t
o
n
l
y
has
th
e
adv
a
nt
ages
o
f
h
i
g
h
s
ensiti
v
ity
,
sm
a
ll
si
z
e
a
nd
l
i
ghtwei
ght,
b
u
t
a
l
s
o
i
t
i
s
easy
to
u
s
e
.
T
h
is
s
ystem
i
s
f
eatu
r
ed
w
it
h
an
u
n
c
om
p
licat
ed
d
esi
gn
,
con
v
en
ient
u
s
e
,
st
ro
ng
f
lexibili
ty
a
nd
rel
i
ab
le
p
er
f
o
rm
an
ce.
S
i
n
c
e
t
h
e
circu
i
t
in
t
h
e
s
ystem
i
s
s
im
pl
e
and
eas
y
t
o
c
on
tri
v
an
ce
,
th
e
s
y
stem
can
b
e
insta
l
le
d
without
any
di
ff
icult
y
a
t
homes
&
offi
ces.
It
w
ill
a
l
s
o
pr
ovi
d
e
a g
o
od secu
r
i
t
y
in
th
e
veh
icl
e
s an
d A
u
t
o
m
a
ted
Tel
l
er M
ach
ine
(ATM
)
boo
ths.
K
eyw
ord
s
:
Alarm
system
GSM
Secu
rity
sy
s
tem
To
uch
se
n
s
it
iv
e box
V
e
ro
b
o
a
rd
Co
pyri
gh
t © 2
019 In
stit
u
t
e
of Advanced
En
gi
neeri
n
g
an
d
S
c
ien
ce.
All
rights
res
e
rv
ed.
Corres
pon
d
i
n
g
Au
th
or:
S
u
sm
it
a
G
hos
h
,
Departem
ent of
E
lectr
i
cal &
Electronic Engineer
ing (EEE)
,
Ame
r
i
c
an
In
t
ern
a
tio
n
a
l
Uni
v
ersi
ty
-B
an
gl
ad
esh
(AI
U
B
)
,
66
/a K
ur
at
oli,
K
uril,
D
haka
-1
22
9, Ban
g
l
ade
s
h.
Em
ail:
susm
i
t
a
g
h
o
sh2
9
@
gm
a
il.c
o
m
1.
I
N
TR
OD
U
C
TI
O
N
N
o
w
a
days,
d
o
m
e
stic
s
e
c
u
ri
ty
i
s
o
n
e
of
t
he
m
ost
s
i
g
n
i
fica
nt
&
c
o
nce
i
va
ble
i
s
s
u
es
f
o
r
huma
n
b
e
i
n
g
.
H
o
m
e
s
e
c
u
r
i
t
y
a
s
w
e
l
l
a
s
d
o
m
e
s
t
i
c
b
e
l
o
n
g
i
n
g
s
s
e
c
u
r
i
t
y
i
s
a
p
r
i
m
e
i
s
sue
o
f
c
o
n
cer
n
be
ca
use
it
i
s
n
o
t
only
j
u
st
a
b
out
f
in
an
ci
al
o
r
mon
e
t
a
ry
s
a
f
et
y
but
a
l
s
o
mu
ch
m
o
r
e
th
a
n
t
h
a
t
.
E
v
er
yo
ne
w
an
ts
t
h
e
p
ro
tec
tio
n
o
f
t
he
ir
essen
tia
l
a
sset
s
.
This
i
s
the
key
re
aso
n
w
h
y
c
once
p
t
of
l
ocke
r
secur
i
ty
a
rises.
P
resen
tly,
the
cr
im
e
ra
t
e
i
s
sw
iftly
i
ncre
as
in
g
d
a
y
b
y
d
a
y
.
Ever
y
da
y
w
e
c
a
n
s
e
e
i
n
t
he
n
e
w
s
t
h
a
t
s
o
m
e
o
n
e
k
i
l
l
e
d
h
i
s
m
o
t
h
e
r
f
o
r
t
h
e
gir
l
frie
n
d
,
a
girl
c
o
u
l
d
be
r
a
p
ed,
a
co
up
l
e
c
ou
ld
b
e
mur
d
e
r
ed,
a
fa
mily
c
o
u
ld
b
e
lo
o
t
ed
e
tc.
Thi
s
n
ew
s
bec
o
me
s
a
c
o
m
m
on
scena
r
i
o
i
n
o
u
r
soc
i
e
t
y.
P
rote
c
tin
g
home
is
o
n
e
of
t
he
u
tm
ost
i
m
p
o
rtanc
e
.
A
gr
eat
secur
ity
s
y
s
te
m
is
n
ee
de
d
for
t
h
i
s
p
urp
o
s
e
,
to
m
ake
a
n
e
norm
ous
d
if
ference
for
the
sa
fet
y
o
f
the
u
s
er
,
his
home
,
f
a
m
il
y
a
nd
pos
sess
io
ns.
Insta
lli
ng
a
se
cur
ity
s
ystem
is
t
he
b
est
pat
h
t
o
keep
our
h
o
u
se
s
afe
e
v
en
i
n
t
h
e
abse
nc
e
of
t
he
hom
eow
n
e
r
.
The
user
c
a
n
a
l
s
o
use
this
f
ea
tu
re
w
h
ene
v
e
r
t
h
e
y
ar
e
a
t
hom
e
or
a
broa
d,
s
l
e
epi
n
g,
ea
t
i
n
g
o
r
tra
v
elin
g.
W
i
t
h
th
e
he
lp
o
f
sm
a
r
t
secur
i
t
y
l
oc
ker
sys
t
e
m,
t
he
u
se
r
c
a
n
k
eep
a
h
a
w
k
’
s
ey
e
o
n
the pr
opert
y.
Th
is
s
e
c
t
i
on
S
e
curi
ty
i
s
co
ns
id
e
r
ed
a
s
a
ma
jor
issue for
t
h
e ho
m
e
a
ut
om
at
ion.
T
radi
tio
na
l
t
echn
i
que
s
of
a
lar
m
-ba
s
ed
s
e
c
ur
it
y
ha
ve
g
ai
ne
d
muc
h
p
op
u
l
ari
t
y
i
n
p
a
s
t
de
c
ad
es
.
Du
ri
n
g
t
h
e
re
ce
nt
p
ast
,
s
ev
e
r
al
s
yst
e
ms
w
e
r
e
i
ntro
d
u
ce
d
for
sec
u
ri
t
y
m
easure
m
e
n
t
s
b
ase
d
o
n
w
i
re
d
ne
tw
or
ks.
I
n
lite
rat
u
re
,
r
e
sea
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che
r
s
sug
g
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s
te
d
a
n
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m
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of
s
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u
r
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sy
st
ems
b
a
se
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on
n
e
w
t
e
c
hnol
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e
s
l
i
k
e
GS
M
(
G
l
oba
l
S
y
stem
f
or
M
o
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m
uni
c
a
t
ion)
,
GP
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G
e
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adi
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ne
t,
A
S
ICs
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pplica
t
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Spe
c
ific
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nte
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a
te
d
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SSN: 2088-
8694
I
nt
J
P
ow
Elec
& Dr
i
S
y
st V
ol.
10,
N
o.
4
, Dec
201
9 :
1
9
2
3
– 1
931
1
924
Circ
ui
t
)
,
U
S
N
(U
biq
u
it
ou
s
S
e
ns
ors
N
e
t
w
o
r
k)
a
nd
imp
l
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m
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thr
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(F
ield
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bl
e
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a
te
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rra
ys), D
SP
(D
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ta
l
S
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g
n
a
l
P
roce
ssor
),
a
nd M
C
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e
m
ory C
o
n
t
r
o
l
U
n
it/
M
i
croc
on
tro
l
ler
U
n
it
)
.
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sta
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la
t
i
on
a
n
d
m
a
in
te
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t
o
f
a
G
S
M
ba
sed
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e
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e
c
u
ri
t
y
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y
s
t
e
m
i
s
m
u
ch
c
he
ap
er
t
han
ot
h
e
r
home
se
c
u
ri
t
y
s
ys
t
e
m.
I
t
is
a
l
s
o
ve
ry
f
le
xi
bl
e
an
d
d
u
rab
l
e.
T
he
g
r
e
a
t
a
dva
n
t
ag
e
of
t
h
i
s
s
y
st
e
m
i
s
n
o
t
t
o
b
e
hac
k
e
d
b
ec
au
s
e
i
t
inv
o
l
ves
on
l
y
a
m
ob
ile
n
etw
o
rk.
Bes
i
de
s,
t
he
users
of
t
he
o
t
h
e
r
G
S
M
b
ase
d
s
ecur
ity
syste
m
s
has
t
o
c
o
u
n
t
m
o
n
e
y
e
ve
ry
d
a
y
f
or
e
ach
S
MS
.
S
o
,
by
s
i
mp
l
ifyi
ng
t
h
e
sys
t
em
,
t
h
e
re
se
arc
h
er
s
ar
e
t
r
yi
n
g
t
o
k
e
e
p
t
h
e
in
st
al
l
a
ti
on
a
nd
m
ai
nt
e
n
an
c
e
c
o
st
l
o
w
.
In
t
h
e
pa
st,
sever
a
l
S
M
S
base
d
h
o
me
s
ec
uri
t
y
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m
s
w
e
re
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l
ope
d.
R
o
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ita,
A
h
m
e
d,
C
ha
n
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nd
H
o
on
g
in
[
1]
,
d
e
v
el
o
p
ed
a
f
u
l
l
con
t
ro
l
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m
e
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ased
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t
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y
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P
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C
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i
c
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l
e
r
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i
c
h
w
a
s
i
n
t
e
g
ra
te
d
w
ith
G
SM
m
odu
le
com
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unic
a
t
in
g
a
t
a
b
au
d
ra
t
e
o
f
9
6
00
b
p
s.
I
n
[2],
m
icr
o
con
t
ro
l
l
er
A
T89C5
5
w
i
l
l
b
e
i
nt
e
rfa
c
e
d
wit
h
a
G
SM
mo
d
u
l
e
t
h
r
ough
R
S
-
2
3
2
co
mmu
n
i
c
a
t
i
o
n
p
r
o
t
o
c
o
l
f
o
r
i
n
t
era
c
t
io
n
be
t
w
ee
n
t
h
e
users’
m
ob
ile
p
ho
ne
a
nd
the
secur
ity
s
yste
m.
B
ar
i
s
,
A
l
pe
r,
T
osun,
K
a
a
n
and
A
l
i
i
n
[
3],
e
x
-p
lai
n
t
he
h
om
e
au
tom
a
t
i
o
n
s
ystem
usi
n
g
G
S
M,
in
t
e
rne
t
a
n
d
s
pee
c
h
r
eco
gn
i
t
i
o
n.
I
n
t
h
e
s
e
sys
t
em
s,
t
he
h
om
e
ga
t
ewa
y
i
s
i
n
t
e
rn
et
b
ased
w
hi
ch
r
e
qui
re
s
a
perso
n
a
l
c
om
p
u
t
e
r
(P
C).
H
o
w
e
ver,
it's
har
d
t
o
m
a
na
ge
P
C
a
n
d
kee
p
i
t
O
N
all
t
h
e
tim
e.
A
l
s
o,
it
c
onsum
es
m
o
r
e
p
o
w
e
r
.
K
h
a
n
d
a
r
e
a
n
d
M
a
h
a
j
a
n
i
n
[
4
]
,
w
h
e
r
e
a
G
S
M
m
o
d
u
l
e
w
a
s
i
n
t
er-
f
ac
ed
w
i
t
h
a
desk
t
op
c
o
mpu
t
e
r
.
H
e
r
e
,
c
l
ie
n
t
s
w
e
r
e
c
onne
c
t
e
d
t
o
t
h
e
c
o
mp
uter
t
hro
u
gh
Wi-F
i
a
cce
ss
po
i
n
t
s
a
n
d
t
he
hom
e
ap
pl
ia
n
c
e
s
h
a
v
e
w
i
red
c
o
n
n
ec
t
i
o
n
t
o
t
h
e
c
o
mpute
r
.
A
n
ot
her
suc
h
s
y
s
te
m
w
a
s
dev
e
l
o
p
e
d
i
n
[5]
,
u
se
d
a
P
I
C
18F
4
5
2
mic
r
oco
n
tro
l
le
r
to
m
o
n
it
or
d
oors
a
nd
w
i
nd
ow
s
o
f
a
hom
e
w
h
ic
h
c
o
ul
d
be
acc
esse
d
on
l
y
b
y
e
n
teri
ng
t
h
e
pro
p
er
ID.
A
fe
w
ye
ars b
a
ck,
Inde
rpree
t
K
a
u
r di
d a
r
e
se
ar
ch en
tit
led
“
M
i
c
r
oco
n
t
ro
lle
r Ba
sed H
o
me
A
ut
oma
tio
n
S
y
stem
w
ith
S
ecur
ity”
a
n
d
got
a
n
a
u
tom
a
te
d
h
o
m
e
c
o
u
l
d
b
e
use
d
f
or
s
i
m
pl
e
gr
ou
p
i
n
g
of
c
ontr
o
ls
w
her
e
a
n
y
app
l
ianc
e
t
h
a
t
i
s
plu
gge
d
in
t
o
e
l
e
c
t
rica
l
p
o
w
er
i
s
r
e
m
o
t
e
ly
c
o
n
tro
lle
d
[6
].
M
oreove
r,
A
hm
ed
E
lS
ha
fe
e
and
K
a
r
i
m
A
l
aa
Ha
me
d
di
d
a
n
o
t
her
re
sear
ch
e
nt
itle
d
“
D
e
s
i
g
n
an
d
Im
pl
em
enta
t
i
o
n
o
f
a
Wi
F
i
B
ase
d
H
om
e
A
u
t
o
ma
t
i
o
n
S
ys
t
e
m”
a
nd
t
h
e
y
h
a
d
c
o
n
c
l
u
d
ed
t
heir
s
yste
m
c
ould
su
pp
ort
a
wi
d
e
r
a
n
ge
o
f
ho
me
a
uto
m
ati
o
n
dev
i
ce
s
li
ke
p
ow
e
r
m
anage
m
e
n
t
c
o
mp
one
nts,
a
n
d
s
ec
urity
c
ompo
ne
n
t
s
a
s
wel
l
[
7
]
.
Vi
sa
M
.
Ib
rahi
m
and
A
s
ogw
a
A
.
V
i
c
t
o
r
ha
d
de
vel
ope
d
a
des
i
g
n
e
nt
itl
ed
“
Micr
oc
o
n
t
r
o
l
l
e
r
B
ased
A
n
t
i
-
th
eft
Se
c
u
ri
ty
S
y
s
t
e
m
Usi
n
g
GSM
Ne
t
w
o
r
k
s
w
i
t
h
Tex
t
M
essage
a
s
Fee
d
back”
.
P
artic
u
l
arly,
i
n
t
h
i
s
pa
per,
t
he
y
h
a
d
d
e
si
gne
d
a
n
a
nt
i
-
theft
secur
ity
s
yste
m
usi
n
g
a
n
e
m
b
edde
d
s
y
s
t
e
m
d
esig
n
w
ith
D
u
a
l
T
o
ne
M
u
l
ti-F
r
eque
nc
y
(D
TM
F
)
a
nd
a
G
S
M
to
m
o
n
i
t
or
a
s
a
sa
feg
u
a
rd
f
or
c
a
r
[
8]
.
Rozi
ta
T
e
y
m
ourza
d
e
h
a
n
d
hi
s
team
d
i
d
a
r
e
s
ear
ch
on
“
S
m
a
rt
G
S
M
ba
se
d
H
o
me
A
utom
at
i
o
n
S
y
st
em
”
an
d
the
i
r
fi
na
l
re
su
l
t
s
sh
ow
a
n
a
c
c
ura
c
y
of
≥
9
8
%
w
it
h
a
m
a
xim
u
m
of
f
our l
oads
[
9].
Jay
a
sh
ri
B
an
ga
l
i
a
nd
A
rvi
nd
Sh
al
i
g
ram
di
d
a
re
se
arc
h
on
Des
i
gn
and
Imp
l
ement
a
t
i
o
n
o
f
Se
cu
rit
y
System
s
for
S
m
a
r
t
H
o
m
e
b
ased
o
n
G
S
M
t
e
c
hno
lo
g
y
a
n
d
th
is
r
e
s
e
a
rc
h
pa
p
e
r
sug
g
e
s
t
t
w
o
ty
pes
of
s
ec
urit
y
syste
m
.
O
n
e
sys
t
e
m
h
a
d
b
a
s
ed
o
n
w
e
b
ca
me
ra
a
no
the
r
s
ystem
had
b
a
s
e
d
on
G
S
M
t
e
chn
o
l
o
gy
[
10].
Raq
i
bu
ll
H
a
sa
n
an
d
h
i
s
tea
m
d
e
s
igne
d
a
M
i
c
r
oco
n
t
rol
l
er
B
ase
d
H
ome
S
e
c
u
ri
t
y
S
y
s
t
e
m
w
i
th
G
S
M
T
ec
hn
ol
ogy
.
A
Com
p
i
l
e
r
C
o
d
e
V
i
sio
n
A
V
R
i
s
use
d
t
o
des
i
gn
a
p
ro
gra
m
t
hat
c
o
n
t
r
ol
s
t
h
e
s
y
st
e
m
a
l
ong
wi
t
h
m
a
i
nt
ai
ni
ng
a
l
l
secur
ity
f
unc
t
i
ons
[
11].
M
o
h
a
m
m
a
d
A
m
a
nu
l
l
a
h
“
Micr
oco
n
tr
olle
r
Ba
se
d
Re
pr
ogram
m
a
ble
D
i
gita
l
D
o
or
L
oc
k
S
e
curit
y
S
yst
e
m
by
U
s
i
n
g
K
e
ypa
d
&
G
S
M
/
CD
MA
T
ec
hn
olo
gy”
.
In
t
h
i
s
s
y
s
t
e
m
,
a
m
a
t
r
i
x
k
e
y
p
a
d
h
a
d
u
s
e
d
for
a
chan
ge
i
t
any
t
i
me
due
t
o
t
h
e
passw
ord
is
s
tor
e
d
i
n
P
RO
M
.
B
e
s
ide
s
,
an
I
P
S
cir
c
uit
ha
d
use
d
f
or
g
ivi
ng
bac
k
u
p
i
n
case
of
a
n
e
m
e
r
gen
c
y
w
h
e
n
t
he
re
i
s
a
p
o
w
e
r
fa
i
l
ure
[1
2].
Za
mshe
d
I
qba
l
C
h
o
w
dh
ury
an
d
his
tea
m
di
d
a
resea
r
ch
e
nti
t
l
ed
w
ith
“
D
e
si
gn
a
nd
im
ple
m
e
n
ta
t
i
on
o
f
P
yro
el
ect
ri
c
Inf
r
are
d
s
e
n
so
r-b
a
se
d
se
cu
rit
y
syste
m
u
si
n
g
m
icr
o
co
ntro
lle
r”.
A
c
tual
l
y
,
in
t
h
i
s
pa
per
,
t
he
d
ev
el
op
me
nt
o
f
a
L
o
w-c
o
st
s
ec
u
r
it
y
sy
st
em
u
s
i
ng
sma
l
l
PIR (Pyroe
lec
t
ric
Infr
are
d
) se
nsor
had
b
u
ilt u
s
i
n
g m
i
croc
ontroller
[
13].
Th
e
sy
st
e
m
p
res
e
nt
ed
i
n
th
is
p
a
p
er
i
s
a
c
o
mb
i
n
ati
o
n
o
f
G
SM
a
n
d
M
C
U
.
G
S
M
p
r
o
-
v
i
d
e
s
w
i
d
e
cove
ra
ge
a
s
G
S
M
assoc
i
a
t
i
o
n
e
s
t
i
m
a
tes
90
%
of
t
he
g
lo
ba
l
m
o
bi
l
e
m
a
r
k
e
t
u
si
n
g
G
S
M
s
t
a
nda
r
d
.
The
prop
ose
d
system
p
rovides
reli
a
b
l
e
s
ecuri
ty,
e
f
for
tle
ss
i
n
sta
l
lat
i
on
and
p
o
rtab
i
lit
y
.
I
n
thi
s
w
or
k
once
t
h
e
syst
em
i
s
pro
g
ra
mm
ed,
nei
t
h
er
c
om
pu
te
r
nor
i
n
t
er
ne
t
con
n
e
c
t
i
o
n
a
re
r
equir
e
d
,
t
h
u
s
e
nsur
in
g
sim
p
l
i
c
i
t
y
o
f
use
.
I
n
this
pape
r,
w
e
pre
s
en
t
the
the
f
t
preve
n
ti
on
u
si
ng
a
t
ec
hn
o
l
o
g
ica
l
s
o
lut
i
o
n
n
a
m
e
l
y
“
S
mart
H
ouse
h
old
To
uc
h
S
e
nsi
t
i
v
e
L
o
c
k
er
S
ec
urity
S
y
s
tem
Base
d
o
n
G
S
M
Tec
hnol
og
y”.
A
l
o
c
k
er
(
touc
h
se
n
s
i
t
ive
b
ox)
c
o
v
er
e
d
b
y
to
uc
h
pl
ates
i
s
co
nne
c
t
e
d
t
o
t
h
e
de
v
i
c
e
.
If
t
he
l
oc
ker
fee
l
s
an
y
una
u
t
hori
z
e
d
t
o
u
c
h
,
a
n
a
lar
m
s
ys
tem
w
i
l
l
b
e
ac
t
i
va
te
d
w
i
th
ou
t
a
n
y
de
la
y
&
t
h
e
ow
ne
r
w
i
l
l
g
et
a
S
M
S
f
rom
the
s
e
r
ver
v
i
a
G
S
M
m
odu
l
e
t
o
pro
t
ec
t
t
h
e
loc
k
er
. The
c
a
t
e
gor
iza
t
ion
of t
hi
s pape
r
:
S
ec
t
i
o
n
-II
de
s
c
r
ibe
s
a
b
o
u
t
c
o
m
p
o
n
en
ts u
sed
i
n
t
he sys
tem
, S
e
c
tio
n-
II
dep
i
c
t
s
t
h
e
me
th
odo
l
o
g
y
o
f
t
h
e
sys
t
e
m
c
ompi
le
d
o
f
b
ot
h
h
a
rdw
a
re
a
nd
so
f
t
w
a
re
i
m
p
le
m
e
ntat
i
o
n,
S
e
c
ti
o
n
-IV
ho
lds
the
e
xper
i
me
nta
l
re
s
u
l
ts
a
nd S
e
cti
o
n-V
c
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pape
r.
2.
E
Q
UIPM
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LIARIZ
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The
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t
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D
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l
a
s
h
w
i
t
h
R
e
a
d
-Wh
ile-
W
ri
te
c
a
p
ab
i
lit
ies,
1
K
b
y
t
es
EEP
RO
M,
2
K
byte
s
S
RA
M,
23
ge
nera
l
pur
pos
e
I/O
li
nes,
32
ge
ne
ral
p
u
r
pose
wor
k
i
n
g
regis
t
ers,
R
eal
T
im
e
Cou
n
t
er
(
R
T
C),
th
r
ee
flex
i
b
le
T
i
m
er
/C
ou
n
t
ers
wit
h
c
om
pa
re
m
odes
a
nd
P
W
M,
1
s
er
i
a
l
pr
ogram
m
a
ble
USARTs
,
1
byte
orie
nt
ed
2
-
w
i
r
e
S
e
ria
l
I
nt
erface
(
I
2
C
)
,
a
6-cha
n
n
e
l
1
0-bi
t
A
D
C
(
8
c
h
anne
l
s
i
n
TQ
F
P
a
nd
QFN/
M
L
F
p
ack
ag
es)
,
a
p
r
ogra
m
ma
b
l
e
W
a
t
c
h
dog
T
i
m
e
r
w
i
t
h
i
n
t
e
rn
al
O
scil
la
tor,
a
n
SPI
s
erial
p
o
rt,
a
n
d
six
softw
a
re
s
elec
t
a
ble
pow
e
r
s
avi
n
g
m
odes
[
14]
.
The
A
r
ith
me
ti
c
Lo
g
ic
U
ni
t
(A
LU
)
is
d
irec
tly
c
on
nec
t
ed
w
it
h
all
32
r
e
g
i
ste
r
s.
A
lth
o
u
g
h
,
allow
i
n
g
t
w
o
i
nde
pe
nde
n
t
r
egi
s
ters
t
o
b
e
a
c
c
e
s
s
e
d
i
n
o
n
e
s
i
n
g
l
e
i
n
s
t
r
u
c
t
i
o
n
e
x
ec
ut
ed
i
n
on
e
cl
ock
cy
cle
.
A
ch
i
e
vi
ng
t
h
r
o
ugh
put
s
up
t
o
te
n
ti
m
e
s
fa
s
t
e
r
t
ha
n
c
o
n
v
e
n
t
i
ona
l
CIS
C
mic
r
oco
n
tro
l
le
rs the
n t
h
e r
e
su
lti
ng a
r
ch
itec
t
u
r
e is m
ore
code
e
f
f
i
ci
en
t
.
2.2.
Glob
al s
ystem
for
mob
i
le
com
mu
n
i
c
a
tion
(
GS
M)
S
I
M80
0
L
e
v
al
uat
i
on b
o
ard w
i
l
l
be use
d
, w
h
ic
h
i
s
c
o
n
t
r
o
l
l
e
d
b
y t
h
e
m
i
c
ro
con
t
ro
l
l
er ATm
ega32
8
p
.
A
S
I
M
8
0
0
L
e
v
al
uat
i
o
n
b
o
ard
is
u
se
d
t
o
m
a
k
e
the
de
ve
lo
pme
n
t
proc
e
s
s
e
a
s
i
er
a
nd
fa
s
t
e
r
.
S
I
M80
0
L
is
a
qua
d-
ban
d
G
S
M
/G
P
R
S
modu
le,
that
w
or
k
s
on
fr
eque
nc
i
e
s
G
S
M85
0
M
H
z
,
EG
S
M
900
MH
z
,
D
S
C
18
00M
hz
a
n
d
PCS1
9
00MHz.
SIM8
00
L
f
e
a
t
u
r
es
G
PRS
m
u
l
t
i-slot
c
lass
12
/class
1
0
(o
pt
ion
a
l
)
a
n
d
s
up
po
rt
s
t
h
e
G
P
RS
cod
i
ng
sc
hem
e
s
CS
-
1
,
CS
-2,
CS
-3
a
n
d
C
S
-
4
[15].
Th
is
i
s
also
a
l
ow
p
o
w
er
d
evice
w
h
ich
has
a
ti
ny
siz
e
-
15.8
*
17.8
*
2
.
4
mm
w
hich
h
e
l
ps
i
n
p
u
t
tin
g
it
w
it
h
a
mic
r
oc
on
tro
l
l
e
r
o
n
a
b
r
e
a
d
b
o
a
r
d
i
n
a
s
m
a
l
l
s
i
z
e
d
b
o
x
t
o
form
our
d
ev
ic
e
.
S
IM80
0L
c
an
m
ee
t
al-m
ost
al
l
t
h
e
spac
e
re
qui
r
e
m
e
nts
in
u
ser
applications
,
such
a
s
sm
art
ph
o
n
e,
P
D
A
and
othe
r
mobi
le de
v
i
c
es.
2.3.
Bu
c
k
c
on
ve
rte
r
The
buc
k
c
o
n
v
e
rter
i
s
an
o
m
n
ipr
e
se
nt
D
C-D
C
c
on
verte
r
t
h
a
t
ef
fec
t
i
v
e
l
y
c
h
a
ng
es
o
v
e
r
a
h
i
gh
volt
a
ge
to
a
l
ow
v
o
lta
ge
p
rofic
i
e
n
t
l
y
[16]
.
P
r
ofic
i
e
nt
p
ow
er
t
ra
ns
for
m
a
t
i
o
n
e
x
p
a
nd
s
bat
t
er
y
l
i
fe,
lesse
ns
w
ar
m
,
a
nd
take
s int
o
acc
o
u
n
t
l
itt
ler co
ntr
a
pt
i
o
n
s
t
o
be
b
ui
l
t
.
The
b
u
ck c
on
ve
rter can be u
til
ize
d
as a part of he
aps of
c
oo
l
a
p
p
l
i
c
a
t
i
o
n
s
.
T
h
i
s
a
r
t
i
c
l
e
g
i
v
e
s
a
c
o
n
c
i
s
e
p
r
o
l
o
g
u
e
t
o
t
h
e
b
u
c
k
c
o
n
v
e
rter
a
nd
s
prea
ds
a
c
o
u
p
l
e
o
f
c
o
ol
ut
iliz
a
t
i
on
o
f
buc
k
c
o
n
v
e
r
te
r
c
i
r
c
ui
t
s
a
n
d
it
s
c
o
us
in
t
h
e
h
al
f-
bri
d
g
e
a
nd
g
i
ve
s
c
o
n
n
e
c
t
s
t
o
asse
ts
w
he
re
in
t
r
ig
ue
d
pe
r
u
s
ers
ca
n
t
a
ke
i
n
m
o
re
a
bo
u
t
p
a
r
t
i
c
u
l
a
r
c
h
i
p
s
to
use
i
n
t
he
ir
d
esi
gns.
T
h
e
bas
i
c
opera
tio
n
o
f
t
he
buc
k
c
onve
r
t
er
h
a
s
t
he
c
ur
rent
i
n
an
i
n
duc
t
o
r
c
o
n
t
ro
lle
d
b
y
tw
o
s
w
i
tche
s
(a
s
a
r
u
l
e
a
t
ra
nsist
o
r
a
nd
a
d
i
o
d
e)
[8].
I
n
t
h
e
g
l
orifie
d
c
o
n
v
erter
,
e
ve
ry
o
ne
o
f
t
h
e
parts
is
t
h
o
u
g
h
t
t
o
be
g
re
at.
I
n
p
art
i
c
u
la
r,
t
he
s
w
i
t
c
h
a
nd
t
h
e
di
ode
h
a
v
e
ze
r
o
v
olta
ge
d
r
op
w
h
e
n
o
n
and
z
e
r
o
c
urrent
s
tre
a
m
w
h
en
o
ff,
a
n
d
t
h
e
i
nduc
tor
h
a
s
z
e
ro
arr
a
ngem
e
nt
p
r
o
t
e
c
t
i
on
[17].
F
u
rthe
r,
i
t
is
a
c
c
e
p
t
e
d
tha
t
t
he
i
nform
a
ti
on
a
n
d
y
i
e
l
d
vol
tage
s
d
o
n
't
c
han
g
e
thr
o
u
g
hou
t
a cycle
(t
hi
s
wo
uld
impl
y t
h
e
o
u
tpu
t
capa
c
i
t
a
nc
e
as
bein
g vast
)
[17].
3.
METHODOLOG
Y
G
S
M
pla
y
s
a
ke
y
r
o
le
i
n
the
proce
s
s
o
f
r
ec
eiv
i
ng
an
d
transm
i
t
t
i
ng
i
n
form
atio
n
in
w
i
r
e
l
ess
sec
u
r
i
t
y
con
t
ro
l ne
t
w
or
ks tha
t
w
i
l
l
a
ffe
c
t the
com
m
u
n
ica
tio
n d
i
s
t
an
c
e
, n
o
d
e p
o
w
e
r co
nsum
pt
io
n, netw
o
rk sta
bil
i
t
y
an
d
ot
her
i
n
d
i
ca
tor
s
d
irec
tly.
3.1.
Hard
ware
de
sign
of
the
syste
m
The
en
t
i
r
e
s
ystem
desi
g
n
i
s
bei
n
g
div
i
de
d
in
to
t
w
o
p
arts-
har
d
w
are
im
plem
ent
a
t
i
on
a
n
d
so
ftw
a
r
e
si
m
u
lat
i
on.
T
h
e
h
ardw
a
r
e
is
d
e
s
ig
ne
d
acc
ord
i
ng
to
t
he
r
ules
o
f
the
em
bedde
d
sys
t
em
.
The
s
y
s
t
e
m
i
s
com
p
o
s
ed
o
f
t
h
re
e
di
ffere
n
t
un
i
t
s
:
T
he
c
o
n
t
r
o
l
u
n
it,
t
he a
la
r
m
uni
t
an
d the
to
uch se
ns
i
t
i
v
e bo
x. The
l
a
t
t
e
r
is
t
o
ma
ke
a
n
i
n
ve
nt
ive
C-co
de
f
or
p
ro
gram
ming
the
M
C
U
an
d
G
S
M
m
odu
le
t
o
mo
ni
tor
a
n
d
c
o
ntr
o
l
the
secur
e
d e
n
vi
r
o
nme
n
t
.
-
The
co
nt
ro
l
unit:
it
works
t
o
ge
the
r
w
ith
t
he
d
etec
ti
o
n
p
art
and
ma
na
ges
t
h
e
alar
m
circ
uit
t
o
c
ontr
o
l
the
alar
m
fu
nct
i
o
n
.
-
Th
e
al
arm
u
n
i
t
:
a
buzzer is used
to give an al
a
rm
.
-
To
uch
se
n
s
i
t
i
v
e
bo
x
:
A
t
ou
c
h
s
e
n
sa
t
i
o
n
s
hee
t
w
as
d
es
i
gne
d
by
usi
n
g
V
e
r
o
board
t
o
pr
otec
t
t
h
e
ob
jec
t
s
w
h
ic
h
w
i
l
l
not
w
ork
un
t
i
l
it
fe
e
l
s
a
ny
una
u
t
h
o
r
i
z
e
d
t
ou
ch
.
A
d
e
t
e
c
t
ion
c
i
rcui
t
co
nn
ect
e
d
t
o
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
S
N: 2
0
8
8
-
86
94
I
n
t
J Po
w El
ec &
D
ri S
y
s
t
Vo
l. 1
0
,
No
. 4
,
D
e
c
2
0
19
:
1
923
–
1
931
1
926
the
dev
i
ce
w
h
i
c
h
w
ill
d
e
te
c
t
a
n
u
n
ex
pec
t
e
d
e
rr
or
a
nd
gi
ve
a
n
im
m
e
dia
t
e
si
gna
l
to
b
e
g
i
n
t
ur
n
on
the
syste
m
.
The
gene
r
a
l
bloc
k
d
i
a
g
r
a
m
of
t
he
p
r
o
p
o
se
d
sys
t
em
i
s
sh
o
wn
i
n
Figu
re 1
.
F
i
gur
e
1.
B
loc
k
d
ia
gr
a
m
o
f
pr
op
osed
s
y
s
te
m
3.
2.
W
o
rk
i
n
g
p
r
i
n
c
i
pl
e
o
f
t
he
s
y
s
t
e
m
A
m
i
cr
oc
o
n
tr
o
ller
i
s
a
s
el
f-
co
nta
i
ned
s
y
s
t
e
m
w
it
h
pe
r
i
p
h
er
a
l
s,
me
mo
ry
a
n
d
a
p
r
o
c
ess
o
r
t
h
at
c
an
b
e
use
d
a
s
an
e
m
b
ed
de
d
sy
stem
[
1
8
]
.
M
os
t
pr
o
g
r
a
m
m
a
b
l
e
m
icr
o
co
ntr
o
l
le
rs
t
ha
t
ar
e
u
s
ed
t
o
d
a
y
a
re
e
m
b
e
d
de
d
i
n
ot
her
co
ns
ume
r
p
r
o
d
u
c
t
s
or
m
achine
r
y
i
n
c
l
ud
i
n
g
p
h
ones,
p
e
r
i
pher
a
l
s,
a
u
t
omo
b
ile
s
a
nd
ho
use
h
ol
d
a
p
p
lia
nc
e
s
for
a
u
tom
a
te
d
sys
t
em
s.
D
ue
t
o
t
h
a
t
f
ac
t,
a
n
o
the
r
n
a
m
e
for
a
mic
r
o
c
ont
rol
l
er
i
s
"emb
e
d
d
e
d
cont
r
o
l
l
e
r
"
[
1
9
]
.
Tr
ansmit
t
i
n
g
&
r
ec
eiv
i
ng
fu
nct
i
on
s
c
a
n
be
d
o
n
e
ea
s
i
l
y
&
acc
urat
e
l
y
b
y
u
s
i
n
g
m
icr
o
c
o
ntr
o
l
l
er
,
so
t
ha
t
de
si
gn
m
i
cr
oc
o
n
t
r
o
lle
r
-
based
tec
h
n
o
lo
g
y
S
I
M
80
0L
m
odu
le
i
s
use
d
t
o
c
o
mp
le
te
t
he
p
ro
p
o
se
d
sy
st
e
m
.
T
o
a
cco
m
p
lis
h
the
ta
sk,
w
e
c
ontr
o
l
l
e
d
t
he
d
e
v
ice
b
y
u
s
i
ng
A
T
m
e
g
a328
p
M
C
U
.
M
i
c
r
oco
n
t
r
o
lle
r
is
t
he
m
os
t
dem
a
nde
d
pr
o
g
r
a
mm
able
c
h
i
p
w
h
i
c
h
is
u
s
e
d
f
o
r
d
e
s
i
gn
i
ng
a
h
o
m
e
a
u
tom
a
te
d
s
y
s
t
em
[
1
8
].
T
o
c
o
mple
t
e
t
h
i
s
har
d
wa
re
i
m
p
lem
e
nta
t
ion
,
a
m
i
c
r
oc
ontr
o
l
l
er
a
n
d
t
w
o
a
da
p
t
er
s
(
5
V
,
2A
)
ha
d
use
d
f
or
t
he
c
o
n
v
er
sion
o
f
2
2
0
V
A
C
t
o
5V
D
C
w
h
ic
h
is
a
n
a
p
p
r
opr
iate
v
olta
ge
f
or
a
m
ic
r
o
c
o
ntr
o
l
l
e
r
[19
]
. Fig
u
r
e
2
sh
o
w
s
th
e circ
u
it
di
ag
ram o
f
p
rop
o
s
ed
s
y
s
te
m.
F
i
gur
e
2.
C
ir
cu
it
d
i
a
g
r
a
m
of
p
r
o
p
o
sed
sy
ste
m
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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P
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Elec
&
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94
D
e
sig
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o
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of a sm
ar
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o
l
d t
o
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t
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e l
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curi
t
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M
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a
d
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e
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ad)
1
927
Firstl
y,
a
t
t
h
e
t
i
m
e
o
f
ru
nn
i
n
g
the
c
i
rcu
it,
s
om
e
unex
p
ec
ted
ne
ga
t
i
ve
p
o
l
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it
y
w
a
s
pr
e
s
e
n
t
i
n
i
t
.
T
o
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e
duce
t
h
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gat
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ve
p
o
l
a
r
i
t
y,
a
c
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y
sta
l
o
sci
l
l
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tor
ha
d
use
d
w
h
i
c
h
a
l
s
o
r
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du
c
e
d
so
me
vol
t
a
g
e
o
f
the
m
i
cr
oc
o
n
t
r
o
lle
r
as
w
ell.
I
n
F
i
gur
e
1,
t
he
m
i
c
r
o
co
ntr
o
l
l
e
r
i
s
r
e
pr
ese
n
te
d
by
‘
MCU
’
w
hi
c
h
r
ec
ei
ve
s
t
h
e
c
o
mm
and
t
h
r
o
ug
h
a
n
a
da
p
t
er
(
5V
,
2A
)
f
o
r
th
e
co
nve
r
s
i
o
n
of
2
2
0
V
A
C
t
o
5V
D
C
.
T
he
S
I
M
80
0L
m
o
d
u
l
e
is
r
e
pr
e
s
e
n
te
d
b
y
“
G
S
M
”
w
h
ic
h
is
a
n
e
n
t
i
r
e
Q
uad-
ba
n
d
G
S
M
/G
P
R
S
a
r
r
a
n
g
emen
t
in
a
n
SM
T
so
rt
t
h
a
t
c
a
n
b
e
in
ser
t
e
d
i
n
t
h
e
cl
ien
t
a
p
p
l
i
c
a
t
i
o
ns
[
1
8
]
.
A
buc
k
c
o
nve
r
t
e
r
w
as
used,
b
e
c
a
use
in
it
ial
l
y
,
som
e
u
ne
x
p
e
c
te
d
ne
ga
t
i
ve
p
o
l
ar
i
t
y
w
a
s
p
r
esen
t
i
n
t
he
c
ir
cu
it.
B
uck
C
o
n
v
er
te
r
is
a
ls
o
c
o
nne
cted
w
i
t
h
a
n
a
d
ap
ter
(
5
V
,
2
A
)
f
or
the
co
n
v
er
si
on
o
f
2
2
0
V
A
C
t
o
5V
D
C
w
h
ic
h
is
a
n
a
ppr
o
p
r
iate
vol
t
ag
e
fo
r
th
e
SIM
800L
m
o
dul
e.
T
his
bu
ck
c
o
n
v
er
ter
is
r
espo
ns
i
b
l
e
f
or
t
he
r
e
duc
t
i
on
o
f
s
om
e
vo
l
t
age
of
t
he
m
icr
o
c
o
n
t
r
o
lle
r
as
w
e
ll
[1
9]
.
A
ha
nd
ma
de
to
uc
h
se
nsi
t
i
ve
b
o
x
i
s
co
n
n
e
c
t
ed
w
it
h
the
M
C
U
w
h
ic
h
he
lps
t
o
a
l
ert
an
d
n
o
ti
fy
t
h
r
ough
s
e
ndin
g
an
S
M
S
t
o
the
pr
oper
t
y
h
o
l
de
r
b
y
a
ny
u
n
e
xpec
t
e
d
u
ser
s
.
I
n
t
h
i
s
c
i
r
c
u
i
t
,
i
n
i
t
i
a
l
l
y
,
2
2
0
V
A
C
i
s
s
t
e
p
p
e
d
d
o
w
n
t
o
5
V
D
C
b
y
u
sin
g
a
da
pt
e
r
s.
T
w
o
d
if
f
e
r
e
nt
v
a
l
ue
c
a
pac
i
tor
s
w
er
e
use
d
t
o
e
n
e
r
g
i
ze
t
h
e
dev
i
ce.
A
h
a
ndm
ade
t
ouc
h
b
ox
c
ir
cu
it
w
a
s
c
on
nec
t
ed
w
i
t
h
t
he
A
5
p
i
n
of
the
m
i
cr
oc
o
n
tr
ol
ler
.
A
n
a
l
a
r
m
w
a
s
r
ung
a
nd
se
n
t
a
n
ale
r
t
m
e
ssag
e
to
t
he
u
se
r
thr
o
u
gh
the
mic
r
oc
on
tr
o
l
l
e
r
af
t
e
r
rec
e
i
vi
ng
th
e
e
a
r
l
i
e
r
g
i
ve
n
i
n
st
ru
c
t
io
n
an
d
th
e
t
h
r
e
sho
l
d
v
a
l
ue.
T
h
e
m
i
c
r
oco
n
t
r
o
ll
er
a
nd
G
S
M
m
odu
le
c
o
mm
unic
a
te
d
w
i
t
h
e
a
c
h
o
t
h
er
t
hr
o
u
gh
U
S
A
R
T
c
o
mm
uni
cati
o
n.
F
ig
ur
e
3
s
how
s
the
sc
he
ma
t
i
c
d
i
a
g
r
a
m
o
f
t
h
e
to
u
c
h
box
ci
r
c
u
i
t
of
t
he
p
r
o
po
se
d
sy
st
em.
F
i
gur
e
3.
S
c
hem
a
tic
d
ia
gr
am
of
t
o
uch
c
i
r
c
u
i
t
oper
a
t
i
on
The
m
i
cr
oc
o
n
t
r
ol
ler
se
nd
s
a
n
S
MS
u
sin
g
t
h
e
G
S
M
m
odul
e
on
the
oc
cur
r
e
n
ce
of
t
wo
e
ven
t
s:
(
a
)
wh
en
i
t
f
e
e
l
s
a
n
y
un
au
tho
r
iz
e
d
t
ou
ch
,
(b
)
rec
e
i
v
es
a
n
a
c
k
n
o
w
l
e
d
g
m
e
n
t
r
e
pl
y
fro
m
th
e
au
tho
r
i
z
ed
u
se
r
.
Whe
n
e
v
e
r
t
he
t
ou
c
h
b
o
x
d
e
t
ec
t
s
una
u
t
h
o
r
i
ze
d
t
o
uc
h,
t
he
G
S
M
m
odu
le
,
b
u
zze
r
a
l
ar
m
&
li
gh
ts
w
i
l
l
be
a
c
ti
va
te
d
w
i
t
h
ou
t
a
ny
de
lay.
T
he
G
S
M
m
od
ul
e
o
p
e
r
ate
s
t
h
r
ou
gh
th
e
o
p
er
a
t
i
n
g
S
I
M
a
n
d
se
nds
t
he
S
MS
.
A
n
y
in
str
u
c
t
io
ns
t
h
a
t
com
e
o
r
g
o
to
t
he
u
se
r
w
i
l
l
c
om
e
to
t
h
e
m
odu
l
e
us
i
ng
the
o
p
er
a
t
i
n
g
S
I
M
numbe
r
.
T
he
m
odu
le
t
hen
d
e
code
s
t
h
e
upc
omin
g
m
e
ssa
g
e
f
r
o
m
t
h
e
use
r
a
nd
se
n
d
s
c
o
m
m
a
nds
acc
or
di
ng
t
o
t
he
o
p
e
r
a
t
i
ng
m
i
cr
oc
o
n
t
r
o
lle
r
.
T
he
m
icr
o
c
o
n
t
r
o
l
l
er
r
ec
eives
S
M
S
thr
o
ug
h
t
h
e
G
S
M
m
odu
l
e
a
n
d
r
e
tr
ie
ves
t
h
e
new
c
o
n
f
ig
u
r
at
io
n
s
e
tt
i
ngs
f
r
o
m
t
h
e
S
M
S
and
sa
v
e
s
t
h
e
sam
e
i
n
the
m
i
c
r
o
c
ont
ro
ll
er.
Th
e
modu
l
e
a
l
s
o
rec
e
i
ves
th
e
si
gna
l
fr
om
t
h
e
ope
r
a
t
i
n
g
m
ic
r
o
co
ntr
o
l
l
er
a
nd
s
en
ds
t
he
m
essage
t
o
t
h
e
use
r
s
ubse
q
uen
t
ly.
S
o
,
t
h
e
G
S
M
m
odu
le
w
or
ks
a
s
a
br
i
dge
c
o
nne
ct
or
b
etw
e
e
n
t
he
s
e
c
ur
i
t
y
s
y
stem
and
the
u
s
er
.
A
t
o
uc
h-
sens
iti
ve
b
o
x
w
as
d
e
s
i
g
ne
d
to
c
om
p
l
e
t
e
the
w
o
r
k
.
T
h
er
e
a
r
e
m
a
ny
to
uc
h-
pa
ds,
t
o
uch
pla
t
e
s
,
m
e
tal
p
l
ates
a
r
e
a
va
i
l
ab
le
i
n
the
ma
rket
w
h
i
ch
a
re
u
se
d
for
sec
ur
it
y
sc
he
m
e
.
B
u
t
i
n
o
r
d
er
t
o
ma
ke
t
he
s
ys
tem
c
o
st
e
ff
ec
t
i
v
e,
w
e
de
si
gne
d
a
han
d
m
a
de
t
ou
c
h
b
o
x
f
or
a
s
m
a
r
t
d
o
me
stic
l
oc
ker
sec
u
r
i
ty
s
y
s
t
e
m.
T
he
t
o
u
c
h
bo
x c
i
r
c
ui
t
w
a
s
de
sig
n
e
d
c
o
n
s
i
der
i
n
g
low
co
s
t
&
t
h
e
s
i
m
p
li
cit
y
of
uses.
A
V
er
o
boar
d
ha
d
ch
o
se
n as the
m
ain
c
o
mpo
n
e
n
t
f
o
r
t
h
e
touc
h
b
o
x
c
ir
cu
it
de
sig
n
.
O
t
he
r
c
o
mpo
n
e
nts
li
ke
a
n
N
P
N
tr
ansistor
(
B
C
54
7)
,
t
w
o
di
f
f
e
r
ent
v
a
lu
e
resi
s
t
o
r
s
(i.
e
.
R1
=1
K
&
R2=2
20
Ω),
a
LED,
a
n
ad
ap
ter
(5
V,
2A)
e
t
c.
a
re
a
lso
u
s
ed
t
o
ac
com
p
li
sh
t
h
e
de
sig
n
g
oa
l.
A
fter
p
r
o
pe
r
ver
i
f
i
ca
t
i
o
n
o
n
t
h
e
br
ea
db
oar
d
,
the
d
es
ig
n
w
a
s
tr
a
n
sfer
r
e
d
to
a
V
e
r
o
boa
r
d
f
or
a
pe
r
m
anen
t
co
n
s
t
r
uc
tio
n.
A
box
w
a
s
m
a
de
by
the
V
e
r
o
b
o
a
r
d
s
o
t
h
a
t
eac
h
mo
du
l
e
can
b
e
ea
si
l
y
i
d
e
nt
i
f
i
e
d
.
Bef
or
e
pr
o
p
er
s
o
l
der
i
ng,
a
c
om
po
ne
nt
p
la
n
w
a
s
dr
a
w
n
to
p
a
y
a
p
a
r
t
ic
ular
a
t
t
en
t
i
on
f
or
m
i
n
im
iz
i
ng
t
h
e
di
sta
n
ce
s
be
tw
ee
n
the
p
o
i
nts
&
co
n
n
ec
ti
o
n
s.
A
fter
t
ha
t,
a
l
l
o
th
e
r
c
om
p
o
n
e
nt
s
w
e
r
e
c
o
n
n
ec
t
e
d
t
o
i
mp
l
e
m
e
nt
the
c
i
r
c
u
it.
F
inal
l
y
,
to
uch
b
ox
c
i
rcu
it
was
con
n
ec
te
d
t
o
t
he
A
5
p
i
n
o
f
A
T
m
e
ga32
8
p
.
Th
us,
the
t
o
uc
h
b
ox
de
sig
n
w
as
c
omplete
d
f
or
s
ma
r
t
dom
est
i
c
l
o
cke
r
s
e
c
ur
it
y
sys
t
em
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
S
S
N: 2
0
8
8
-
86
94
I
n
t
J Po
w El
ec &
D
ri S
y
s
t
Vo
l. 1
0
,
No
. 4
,
D
e
c
2
0
19
:
1
923
–
1
931
1
928
3.
3.
S
o
ftwa
re
des
i
g
n
o
f th
e
sy
stem
F
i
r
s
t
o
f
a
l
l
,
t
h
e
s
y
s
t
e
m
f
i
l
e
w
a
s
l
o
a
d
e
d
i
n
t
o
t
h
e
A
T
m
e
g
a
3
2
8
p
.
T
he
s
ys
t
e
m
w
a
s
in
i
t
ia
l
i
zed
t
o
im
pl
e
m
e
n
t
t
h
e
spec
if
ic
t
as
k,
s
uch
as
c
he
c
k
i
n
g
to
uc
h
s
y
s
t
em
,
G
S
M
c
omm
unica
t
i
o
n
a
n
d
s
o
o
n.
A
fter
t
hat,
e
a
c
h
m
odu
le
w
a
s
r
ese
t
t
o
r
un
c
o
m
m
a
nds.
A
touc
h
sens
i
ng
s
y
s
t
e
m
w
as
p
r
ogr
am
me
d
in
a
g
r
a
ph
ica
l
u
ser
in
t
e
r
f
ac
e
us
in
g
the
C
pr
o
g
r
a
m
m
in
g
la
n
gua
ge
.
Th
is
p
r
ogr
am
w
as
u
sed
t
o
c
o
n
t
ro
l
t
h
e
GS
M
te
rmina
l
.
The
a
l
a
r
m
sys
t
em
wi
ll
b
e
a
c
t
i
v
a
t
e
d
on
t
he
f
ai
lu
re
o
f
aut
h
en
ti
cati
o
n
.
A
l
a
rm
s
y
s
t
e
m
was
u
s
ed
t
o
noti
f
y
t
h
e
p
r
es
e
n
c
e
of
una
uth
o
riz
e
d
u
se
r.
W
hen
t
h
e
alar
m
system
w
ill
be
t
urne
d
o
n
,
an
a
l
er
t
m
e
ssage
will
be
s
e
n
t
t
o
t
he
l
oc
ke
r
ow
ne
r
r
e
gar
d
ing
t
h
e
pr
esen
ce
o
f
t
h
e
f
t
at
te
mpt.
A
lar
m
s
yste
m
w
i
l
l
b
e
d
ea
ct
iv
at
ed
o
n
l
y
wh
e
n
i
t
rece
i
v
es
spec
if
ied
S
M
S
fr
om
t
he
a
ut
h
o
r
ized
u
ser
othe
r
w
ise
system
e
r
r
o
r
w
ill be
t
he
re.
Th
is
p
r
o
cess
w
i
l
l
b
e
ac
t
i
va
te
d
on
l
y
w
he
n
har
d
w
a
r
e
a
nd
s
o
f
t
w
ar
e
chain
ar
e
i
n
ter-c
o
nnec
t
e
d
.
At
f
irst,
the
s
y
stem
w
i
l
l
i
n
i
tia
liz
e
t
h
e
sys
t
e
m
c
l
o
c
k
.
A
f
ter
tha
t
,
th
e
sy
ste
m
w
i
l
l
exec
u
t
e
t
h
e
s
y
st
e
m
c
o
d
es
t
o
o
p
en
in
terr
up
tin
g
t
a
s
k
.
The
w
h
o
l
e
sys
t
em
w
as
b
u
i
l
t
a
ro
un
d
a
M
C
U.
T
h
e
M
C
U
r
e
q
u
i
r
e
s
t
o
b
e
b
u
r
n
e
d
w
i
t
h
s
o
f
t
w
a
r
e
wr
i
tte
n
f
o
r
sp
ec
i
f
i
c
a
p
p
l
icat
i
ons.
The
c
o
de
w
as
w
ritten
us
in
g
A
S
S
EMB
L
Y
l
a
n
gua
ge
a
nd
c
o
m
p
ile
d
usi
n
g
A
r
duin
o
.
A
r
duin
o
g
e
n
er
a
t
es
a
h
ex
f
i
l
e
w
h
i
c
h
w
a
s
bur
ned
usi
n
g
a
b
u
r
n
e
r
i
nt
o
the
I
C
.
T
h
e
t
o
uch
b
ox
w
o
r
k
s
sim
p
ly
a
s
a
sw
itc
h
f
o
r
M
C
U
.
A
t
the
beg
i
nn
i
n
g
of
t
he
p
r
o
gr
am
o
r
d
u
r
i
n
g
t
he
h
eal
t
h
y
c
o
n
d
i
t
i
on,
t
he
e
xt
e
r
nal
in
ter
r
up
tio
n
of
t
he
M
C
U
r
e
m
ains
d
isa
b
le.
Ther
e
f
or
e
,
a
n
y
s
ig
na
l
i
n
p
u
t
on
the
pi
n
A
5
can
no
t
gene
r
a
te
a
n
in
ter
r
up
tio
n.
W
he
n
the
r
e
is
n
o
d
i
s
t
ur
bance
t
o
t
he
t
o
u
c
h
b
ox,
t
h
e
b
o
x
ac
ts
l
i
k
e
a
n
o
pe
n
cir
c
u
it,
t
he
s
i
gna
l
is
LO
W
an
d
w
h
e
n
t
he
d
i
s
t
u
r
b
a
n
ce
o
cc
u
r
s,
t
he
b
o
x
w
or
ks
a
s
t
h
e
cl
ose
d
c
i
r
c
u
i
t
,
t
her
e
f
o
r
e
t
h
e
s
i
gna
l
is
H
I
G
H
on
pi
n
A
5
.
The
MCU
r
e
pea
t
e
d
ly
k
ee
ps
on
che
c
k
in
g
t
h
e
sw
i
t
c
h
s
ta
tus
of
t
h
e
syst
e
m.
M
C
U
br
ea
ks
o
ut
o
f
the
si
g
n
a
l
c
hec
k
in
g
lo
o
p
a
n
d
w
a
its
f
or
t
he
s
w
i
t
c
h
to
b
e
c
l
o
s
ed
.
W
h
en
ev
e
r
t
h
e
i
npu
t
si
gn
al
s
t
a
t
e
i
s
HI
GH
on
A
5
,
M
C
U
i
nt
e
r
p
r
et
s
it
a
s
t
h
e
tru
e
d
e
t
e
c
t
i
o
n
o
f
m
o
t
i
o
n
of
a
n
y
unw
a
n
ted
b
o
dy.
I
n
th
is
c
ase,
M
C
U
w
ill
tur
n
o
n
the
a
l
arm
sys-
te
m
a
n
d
sen
d
p
r
oper
A
T
c
o
mm
ands
t
o
the
G
S
M
m
odem
t
o
i
n
i
t
i
at
e
a
SMS
to
a
p
re
-define
d
n
u
m
be
r.
A
fter
s
end
i
ng
t
h
e
SM
S,
M
CU
w
ill
w
a
it
f
o
r
a
pr
e
-
def
i
ne
d
t
i
m
e
b
ef
or
e
e
x
ecu
t
i
n
g
f
ol
lo
w
i
n
g
i
ns
tr
uc
t
i
o
n
s
thr
o
u
g
h
t
he
d
e
v
ice
ow
ner
.
T
h
i
s
w
a
i
t
s
t
a
t
e
a
l
l
o
w
s
t
h
e
S
M
S
t
o
b
e
c
o
m
p
l
e
t
e
d
su
c
c
e
s
sf
ull
y
.
A
f
t
e
r
t
h
at
,
M
C
U
go
e
s
t
o
SLEEP
mo
d
e
.
En
ab
li
ng
t
h
e
S
LEEP
m
ode
e
ns
ures tha
t
MCU
will
w
a
k
e
up
from
t
he
S
LEEP
m
ode
w
hene
ve
r
the
r
e
is
a
L
OW
t
o
HIGH
t
ransiti
on
on
A
5
,
i.
e.
w
he
n
t
h
e
sw
i
t
c
h
g
e
t
s
ope
ne
d.
W
he
n
an
e
x
t
er
na
l
in
ter
r
up
tio
n
oc
c
u
r
s
,
MCU
w
a
ke
s
u
p
f
r
o
m
s
l
e
e
p
m
o
d
e
a
n
d
d
i
s
a
b
l
e
t
h
e
e
x
t
e
r
n
a
l
in
ter
r
up
tio
n
a
n
d
the
pr
ogr
am
g
oes
to
t
he
b
eg
i
n
n
i
n
g
o
f
the
a
l
g
o
r
ith
m.
A
f
lo
wch
a
rt
r
e
p
res
e
nt
s
th
e
lo
c
k
er
se
cur
i
ty
s
yst
e
m
m
o
d
e
l
i
n
F
i
g
ur
e
4.
F
i
gur
e
4.
S
yst
e
m
ac
qui
s
i
t
i
on
f
l
ow
c
har
t
Evaluation Warning : The document was created with Spire.PDF for Python.
I
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t
J
P
o
w
Elec
&
D
r
i
S
y
st
I
S
S
N
:
2088-
86
94
D
e
sig
n
prot
o
t
y
p
e
of a sm
ar
t h
ous
eh
o
l
d t
o
uch
sensi
t
iv
e l
o
ck
e
r
se
curi
t
y
syste
m
based …
(
M
oh
am
m
a
d
Z
e
y
ad)
1
929
3.
4.
Implemented
system
Th
is
e
xper
i
m
e
nt
m
a
i
n
l
y
a
i
m
s
a
t
d
o
m
e
st
i
c
l
oc
ker
se
c
u
r
i
ty
s
y
s
tem
whi
c
h
pl
a
y
s
an
a
l
a
rm
s
o
und
t
o
dr
aw
atte
nt
ion
and a
t
t
he sam
e t
i
m
e
,
a
n
a
l
e
r
t
m
essage
w
a
s
s
ent
t
o
t
he
l
oc
k
e
r
ow
ner
by
se
nsin
g to
uc
h ba
se
d
o
n
the
t
ouc
h
b
o
x
.
T
he
s
yste
m
ent
ity
d
i
a
gr
am
h
a
d
s
how
n
i
n
F
ig
ur
e
5.
To
o
p
e
r
a
te
t
he
s
ma
r
t
h
ouse
h
ol
d
loc
k
er
s
e
c
u
r
i
ty
s
ys
t
e
m
,
s
om
e
a
c
c
e
ssib
l
e
ke
yw
or
ds
h
a
d
u
se
d
w
h
i
c
h
wil
l
h
e
l
p
the
u
s
er
t
o
ac
ces
s
t
h
e
GSM-ba
se
d
syste
m
by
se
n
d
in
g
S
M
S
from
an
y
w
h
e
re.
P
e
rh
ap
s,
t
o
s
ecure
t
h
e
sys
t
em
w
ith
n
o
n
-
o
bser
va
nt
p
e
o
p
l
e
’
s
di
ffe
r
e
nt
k
e
y
w
o
r
d
s
c
a
n
b
e
u
s
e
d
f
or
d
i
f
f
e
r
e
nt
u
se
r
s
p
er
so
n
a
l
l
y.
Ac
ce
ssib
le
k
e
y
words a
r
e:
#a
1 --
- Buzz
er, Lig
ht ON
#a
0 --
- Buzz
er, Lig
ht OF
F
F
i
gur
e
5.
S
c
hem
a
tic
d
ia
gr
am
of
t
o
uch
c
i
r
c
u
i
t
oper
a
t
i
on
4.
EX
PERIMENT
AL R
E
S
ULTS
A
N
D
ANA
LYSIS
Du
ri
ng
t
h
e
O
N
mo
d
e
o
f
t
h
e
d
e
vi
c
e
,
d
e
vi
ce
g
a
i
n
e
d
v
olt
a
ge
a
nd
c
u
r
r
e
n
t
.
B
y
u
s
i
n
g
a
M
u
l
t
i
m
e
t
e
r
,
w
e
m
e
a
s
ur
ed
t
he
v
o
l
t
a
ge
&
c
ur
r
e
nt
f
or
d
i
f
fer
e
nt
c
i
r
cum
s
ta
nc
es.
A
f
t
e
r
f
i
ndi
ng
t
h
e
v
olt
a
ge
&
c
u
r
re
n
t
v
al
u
e
s,
pow
e
r
c
ons
um
pt
i
o
n
w
a
s
ca
lc
ula
t
e
d
.
I
f
vo
l
t
a
g
e,
c
ur
r
e
n
t
&
pow
e
r
i
s
de
no
te
d
b
y
V
,
I
&
P
r
e
spect
ive
l
y,
t
he
n
pow
e
r
f
or
m
u
l
a
i
s
e
xpr
essed
a
s
:
P
=
V
I
(
1)
[
20
]
.
T
a
b
l
e
1
r
epr
e
sen
t
s
the
P
o
w
e
r
Cons
ump
t
i
o
n
of
t
h
e
s
ys
tem
.
Tab
l
e
1.
S
ystem
pow
e
r
c
onsum
pti
o
n
Co
n
d
itio
n
s N
o
.
Vo
lta
g
e
,
V (
V
)
C
u
r
r
en
t, I
(
A
)
P
o
w
e
r
, P
(
W
)
R
ema
rks
1
1.
66
0
.
9
7
1.
61
W
h
e
n
touc
h
bo
x
not
t
ouc
he
d
2
4.
95
1
.
9
1
9.
45
W
h
e
n
touc
h
box t
ouc
h
e
d
3
4.
99
1
.
9
6
9.
78
W
h
e
n
touc
h
box t
ouc
h
e
d
To
t
es
t
t
h
e
to
uch
b
o
x
c
ir
cu
i
t
,
w
e
c
hec
k
e
d
t
he
c
or
r
e
ct
p
ow
er
s
u
p
p
l
y
a
t
T
P
1
w
i
t
h
r
e
s
p
e
c
t
t
o
T
P
0
.
Whe
n
the
t
ouc
h bo
x w
a
s no
t
to
uc
hed,
t
he es
tima
t
e
d
f
r
e
que
nc
y
a
t
TP
2
w
a
s 1
kH
z
.
Th
i
s f
r
e
que
ncy
d
i
sa
p
p
ea
r
e
d
w
h
e
n
t
he
t
ouc
h
bo
x
f
e
e
l
s
a
n
y
una
u
t
hor
i
z
e
d
t
ouc
h.
V
er
i
f
ie
d
v
o
l
t
a
ge
l
e
v
e
l
s
a
r
e
i
n
di
cat
ed
i
n
Tab
l
e
2
at
T
P3
a
nd
TP
4.
T
able
2
shows t
h
e
Syste
m
F
eedba
ck
D
ata
on d
i
ffe
ren
t
te
s
t
p
oin
t
o
f
t
h
e
t
ouc
h
b
ox.
Tab
l
e
2.
S
ystem
fe
edbac
k
d
a
t
a
Te
st
point
(
TP
)
S
y
s
t
em f
e
e
d
b
a
ck
Re
ma
r
k
s
B
u
zz
e
r
G
S
M
m
odule
T
P
0
O
f
f
O
ff
0V
;
GN
D
TP
1
Of
f
Off
+
5
V
T
P
2
O
f
f
O
ff
1kH
z
;
w
h
e
n
tou
c
h box
not
t
o
u
c
h
e
d
T
P
3
O
f
f
O
ff
0.
6V;
w
h
e
n
t
ou
c
h
box
not
t
o
u
c
h
e
d
T
P
4
O
f
f
O
ff
0V;
whe
n
t
ou
c
h
box
not
t
ouc
he
d
T
P
5
O
n
(
A
l
a
r
m
e
d)
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sy
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o
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tr
o
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m
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d
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y
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s.
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ence
,
A
T
c
o
m
m
a
nds
w
er
e
use
d
t
o
acc
e
s
s
a
n
d
co
n
t
r
o
l
t
h
e
b
uil
t
-
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o
m
m
a
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o
f
t
h
e
mobi
le
ph
o
n
e.
T
a
b
l
e
3
s
how
s
A
T
c
omm
a
nds
t
ha
t
ar
e
use
d
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n
t
h
e
p
r
op
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system
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SSN: 2088-
8694
I
nt
J
P
ow
Elec
& Dr
i
S
y
st V
ol.
10,
N
o.
4
, Dec
201
9 :
1
9
2
3
– 1
931
1
930
Ta
ble
3.
S
ystem
A
T
comm
a
nds
A
T
c
o
m
m
a
nd
D
e
s
c
r
ipt
i
ons
AT
+CN
M
I
Ne
w S
M
S
m
e
s
s
a
g
e
in
d
i
catio
n
s
A
T
+C
MG
F
S
e
lec
t
S
M
S
m
ess
a
ge
f
or
m
a
t
A
T
+C
MGD
D
e
le
t
e
u
n
a
uthorize
d
S
M
S
A
T
+C
MG
S
Se
n
d
S
M
S
t
o
sp
e
c
i
f
i
c
nu
m
b
e
r
(
I
t
’
s
a
s
e
c
u
r
i
t
y
S
M
S
f
r
o
m
yo
u
r
a
s
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et
.
P
l
eas
e
Ch
e
c
k
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MG
R
Re
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uthorize
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S
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o
re
por
t m
obi
le e
quipm
e
n
t e
r
r
o
r
5.
CO
NC
L
U
S
I
O
N
Th
is
p
aper
s
u
c
c
e
ssful
l
y
i
m
p
l
e
me
n
t
s
a
dom
e
stic
s
ecurity
system
b
a
s
ed
o
n
em
erg
i
ng
w
i
reless
tech
n
o
l
o
gy,
m
i
c
roc
o
nt
r
o
lle
r
and
G
S
M.
T
he
s
ys
tem
w
a
s
used
a
lon
g
w
i
t
h
a
n
an
dr
oid
a
p
p
l
i
c
a
t
ion
t
o
m
a
i
nta
i
n
secur
ity
a
t
a
n
y
loca
t
i
o
n
t
hrou
g
h
a
p
a
n
ic
-
b
u
tto
n.
T
he
s
y
s
tem
i
s
i
n
t
e
lli
g
e
nt
e
n
oug
h
t
o
m
on
ito
r
th
e
se
cu
re
env
i
ro
nm
en
t
a
n
d
let
t
h
e
use
r
k
n
o
w
a
b
ou
t
t
h
e
secur
i
t
y
i
nfri
ngem
e
nt
.
Th
e
re
mo
t
e
u
se
r
c
a
n
cont
ro
l
h
i
s
p
r
emi
s
e
s
from
a
ny
pa
rt
o
f
t
h
e
w
o
r
l
d
t
h
ro
ug
h
the
G
S
M
ne
tw
ork.
A
s
G
S
M
is
a
w
i
r
ele
s
s
tec
h
no
l
o
gy,
t
he
u
ser
ca
n
g
e
t
aler
t
s
a
nyw
h
e
r
e
i
n
t
h
e
w
o
rl
d
t
h
u
s
m
ak
in
g
the
s
y
st
e
m
i
nd
epe
nde
nt
o
f
lo
c
a
tio
n.
F
or
i
ns
tance
,
t
he
o
w
n
er
i
s
aler
t
e
d
t
h
r
o
u
g
h
a
n
S
M
S
if
a
ny
m
o
tio
n
is
d
etec
t
e
d
i
n
t
h
e
t
ouc
h
b
o
x
w
h
i
l
e
t
h
e
s
y
s
t
e
m
w
a
s
a
c
t
i
v
a
t
e
d
.
M
C
U
i
s
pro
g
ra
mm
ed
f
or
t
he
s
ys
t
e
m
a
nd
m
a
in
p
art
o
f
i
t
.
A
T
c
o
mm
ands
w
i
l
l
b
e
use
d
i
n
t
h
e
sys
t
em
t
o
ex
pl
ore
the
service
s
o
f
mo
bi
le
a
n
d
c
on
trol
t
he
s
erv
i
c
e
s
fle
x
ib
l
y
.
The
fac
t
o
r
s
o
n
w
h
i
c
h
tim
e
i
s
t
a
k
e
n
t
o
se
n
d
a
m
e
s
sa
ge
depe
n
d
s
o
n
t
h
e
r
ange
o
f
a
spe
c
ifie
d
ne
tw
or
k
a
nd
i
t
s
co
vera
g
e
a
r
ea.
F
or
g
lo
bal
c
o
m
m
un
ic
a
tio
n,
G
S
M
m
od
u
l
e
is
u
se
d
to
c
omm
unica
te
b
e
t
w
een
t
he
u
se
r
a
n
d
s
y
stem
.
Tra
d
i
tio
na
l
b
u
r
g
l
a
r
a
l
a
r
m
m
o
d
e
i
s
a
l
s
o
u
s
e
d
t
o
e
n
s
u
r
e
relia
bi
l
ity.
The
GS
M
com
m
unica
t
i
o
n
p
r
o
v
i
d
e
s
w
o
rldw
i
d
e
c
over
a
ge,
e
a
s
y
,
a
n
d
a
l
o
w
-
c
o
s
t
w
a
y
o
f
i
n
f
o
r
m
a
t
i
o
n
in
t
e
rcha
n
g
e
.
T
he
M
CU
p
ro
vi
des
i
n
ter
o
p
e
ra
b
i
l
ity
o
f
G
S
M
an
d
al
so
m
a
k
e
s
t
h
is
s
y
s
te
m
por
tab
l
e
a
n
d
e
a
sy
t
o
in
sta
l
l
a
s
t
he
s
yste
m
is
e
mbe
dde
d
an
d
doe
s
no
t
requ
ire
com
p
u
t
e
r
o
nc
e
progra
m
m
e
d.
A
h
a
ndma
d
e
to
uc
h
se
n
s
i
b
l
e
c
i
r
cui
t
b
ox
h
ad
d
e
s
i
g
n
e
d
f
o
r
t
h
e
sy
st
em
w
h
i
c
h
i
s
t
h
e
m
ost
a
ttra
c
t
i
ve
p
ar
t
of
t
he
s
ys
tem
.
H
e
n
ce,
t
he
to
uc
h
se
ns
i
b
le
c
i
r
cu
i
t
m
ake
s
t
he
d
e
v
i
c
e
c
o
st
l
ow
.
S
o
,
it
ca
n
pr
o
v
ide
a
low
-
cos
t
,
fas
t
a
nd
r
el
iab
l
e
se
c
u
ri
ty
service
f
o
r
a
ny
user
t
o
be
u
se
d a
t
t
he
ir hom
e
s
.
I
n
t
hi
s
pa
per
,
i
t
is
s
how
n
tha
t
h
ow
a
n
a
fford
a
b
le
,
re
lia
ble
h
o
m
e
a
ppl
ia
nc
e
con
t
ro
l
lin
g
s
y
s
t
e
m
c
an
b
e
implem
e
n
te
d
w
h
e
r
e
the
co
nt
rol
lin
g
is
p
oss
i
ble
a
nyw
he
re
w
it
hin
t
he
G
S
M
c
ove
rage
a
re
a.
T
he
re
i
s
no
n
e
e
d
o
f
an
e
xpe
rt
p
e
r
s
on
t
o
opera
te
t
he
s
yst
e
m
beca
use
t
h
e
sys
t
em
i
s
ve
ry
e
a
s
y
t
o
c
on
t
r
ol
.
Add
iti
on
a
l
ly
,
it
i
s
p
o
ss
ib
le
to
i
mp
le
me
nt
t
he
w
hole
s
y
s
t
e
m
i
n
iO
S
a
n
d
Wi
n
dow
s
ope
r
a
ti
n
g
s
y
s
t
em
a
s
w
e
ll.
S
ince
t
he
w
ho
le
s
ys
te
m
is
do
ne fo
llow
i
n
g
the A
n
dro
i
d o
p
e
r
at
in
g sy
st
e
m
. I
n
the fut
ure,
w
e
w
ill try t
o
acc
omm
oda
t
e
the bi
o
m
e
tric
syste
m
and
fac
e
rec
og
ni
t
i
on
tech
n
i
qu
es for loc
kin
g
a
nd u
n
l
o
c
k
i
n
g the s
yste
m in t
h
e
pr
o
p
o
se
d m
ode
l. We are
w
o
r
k
i
n
g
on
t
h
e
pr
ojec
t
t
o
e
x
p
an
d
it
for
c
o
mp
le
te
bui
ld
i
ng
se
cur
i
t
y
a
nd
a
u
t
o
m
a
t
i
on
a
nd
a
l
s
o
t
o
i
n
t
erf
a
c
e
i
t
t
o
t
h
e
i
n
t
e
rn
et
t
h
r
ough
W
i
-
F
i
n
et
work
s.
T
h
e
p
rop
o
se
d
s
y
st
e
m
can
b
e
ab
l
e
t
o
h
e
l
p
t
h
e
w
hole
e
c
onom
ic
s
i
t
ua
t
i
o
n
i
n
any
de
ve
l
o
p
i
n
g
c
o
u
n
tr
y
i
f
t
he
s
yst
e
m
w
i
l
l
b
e
imp
l
em
ente
d
in
a
l
a
r
ge
r
fi
el
d
li
k
e
b
a
n
ks,
ATM
bo
oth
s
,
u
n
i
v
ersit
i
es,
re
st
au
ra
n
t
s,
h
ot
el
s,
i
ndus
tries,
g
ar
men
t
s
and
m
a
n
y
m
o
re.
Specia
l
l
y
,
the
s
y
s
t
em
w
il
l
sa
v
e
s
om
e
v
a
lu
ab
l
e
t
i
m
e
an
d
redu
c
e
huma
n
e
ffo
rt
s
a
s
w
e
l
l
.
I
t
c
oul
d
be
c
on
c
l
u
d
e
d
t
h
a
t
t
h
e
pro
pose
d
s
ystem
co
ns
i
d
era
b
l
y
have
m
ore
scope
s
for
furth
e
r
rese
arc
h
a
n
d
d
e
v
e
l
opm
en
t
in
t
he
n
e
a
r
f
u
t
u
r
e
t
h
a
t
m
a
k
e
s
t
h
e
s
y
s
t
e
m
m
o
r
e
com
f
orta
b
l
e
an
d
use
r
f
rien
dl
y.
REFE
RENCES
[1]
Tey
m
ou
rz
ad
eh
R
.
,
A
hm
ed
S
A,
C
h
a
n
KW
,
an
d
H
oon
g
M
V
.
,
“
Sm
art
gsm
b
ased
h
om
e
au
to
m
a
t
i
on
s
y
s
t
em,”
a
rXiv
prep
rin
t
a
rXiv
:1
8
0
6
0
3
715
.
2
01
8.
[2]
El
ka
m
c
h
ouch
i
H
.
and
E
l
S
h
a
f
ee
A.
,
“
D
esig
n
and
p
r
ot
oty
p
e
im
pl
e
m
en
t
a
ti
on
of
S
MS
b
ased
h
o
m
e
au
tom
a
tion
syst
e
m
,”
Electr
o
n
i
cs
Design,
S
y
stems
an
d
A
pplicati
ons
(
I
CE
DS
A)
,
2
0
1
2
IEEE Interna
t
i
onal Conf
ere
n
ce
, 2
01
2.
[3]
Yu
ks
ekk
a
ya
B
,
K
a
yalar
AA
,
T
o
s
u
n
M
B
,
Ozcan
M
K,
a
n
d
A
l
k
ar
A
Z.,
“
A
G
S
M
,
i
n
t
e
rnet
a
nd
s
peech
c
o
n
tro
l
l
e
d
wi
reless
interact
ive
home
a
uto
m
ation
sys
t
em,
”
IEEE T
r
an
sa
c
t
io
ns on
Co
ns
ume
r
Ele
c
t
ron
i
c
s
,
vo
l.
5
2
(
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pp
.
8
37
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2
0
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6
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[4]
Kha
n
da
re
M
S
a
n
d
Ma
ha
ja
n
A.
,
“
M
o
b
i
l
e
mo
n
i
to
ri
ng
s
ys
te
m
fo
r
sma
r
t
h
om
e
,
”
Emerg
i
ng
Tr
ends
i
n
Engin
eeri
ng
and
T
echn
o
l
ogy (
I
CE
TET),
201
0
3rd Int
e
rn
a
t
io
na
l Co
nfer
ence
,
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Isl
a
m
MS
,
“Home
secu
rity
s
ystem
based
o
n
p
i
c
1
8
f
4
52
m
icro
con
t
rol
ler,”
El
ectro
/Info
r
m
a
ti
on
T
ech
nol
og
y (
E
iT
),
20
14
IEE
E
In
terna
tio
nal Co
nf
ere
n
c
e
,
20
14
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[6]
Kau
r
I
.
Micro
c
on
tro
l
ler
bas
e
d
ho
m
e
a
ut
om
a
t
io
n
sy
stem
w
ith
s
ecur
it
y
.
Intern
atio
n
a
l jo
urn
a
l
o
f
advan
ced
c
o
mp
ut
er
sci
e
nce a
n
d
ap
plicatio
ns
.
2
010;1
(
6):
6
0
-
5.
[7]
ElS
haf
ee
A,
H
a
m
ed
K
A
.
D
esig
n
an
d
im
pl
e
m
ent
a
tio
n
o
f
a
W
IF
I
based
h
o
m
e
aut
o
m
a
tio
n
s
y
s
t
e
m
.
Wo
rld ac
a
d
e
my
of
sci
e
nce,
engi
neer
ing a
nd tech
nolog
y.
2
012
;6
8
:
2177-8
0
.
[8]
Ibrahim
VM,
Victor
A
A.
M
icrocont
roller
bas
e
d
anti
-
t
heft
s
ecur
i
t
y
s
y
s
t
e
m
u
s
i
n
g
G
S
M
n
e
t
w
o
r
k
s
w
i
t
h
t
e
x
t
m
e
s
s
a
g
e
as
f
e
e
d
b
ack
.
Int
e
rn
atio
nal Jo
urn
a
l
o
f
E
n
g
i
neer
in
g
R
e
sear
ch a
n
d
D
evel
op
ment
.
2
012;2
(
10
):18
-22.
Evaluation Warning : The document was created with Spire.PDF for Python.
Int J
P
o
w
E
l
e
c
&
D
ri S
yst
IS
S
N
:
2088-
86
94
D
e
sig
n
pr
ot
oty
p
e
of a
sm
ar
t
h
ouse
h
o
l
d t
ouc
h
sensi
t
i
v
e loc
k
e
r
securi
ty
sy
ste
m
based …
(Moh
am
m
a
d Z
e
yad)
1
931
[9]
Tey
m
ou
rz
ad
eh
R
,
Ahm
e
d
S
A
,
Ch
an
K
W,
H
oong
M
V,
e
d
i
t
o
rs
.
S
m
art
g
s
m
b
ased
hom
e
au
to
mat
i
o
n
s
y
s
te
m
.
2
013
IEEE
Co
n
f
erence
on
Syst
ems, P
r
o
c
es
s &
Contro
l (
I
CSPC)
;
20
13: IE
E
E.
[10]
Bang
ali
J,
S
hali
gram
A
.
D
e
sign
and
Im
plem
ent
a
ti
on
o
f
S
ecu
rit
y
S
y
s
te
m
s
f
o
r
S
ma
r
t
H
o
m
e
ba
se
d
on
G
SM
tech
no
lo
gy.
In
te
rna
tio
na
l J
o
urna
l
o
f
S
m
art
H
o
m
e
.
20
13
;7(6):201-
8.
[11]
Has
a
n
R,
K
han
M
M
,
A
s
h
ek
A
,
Rum
p
a
IJ.
M
i
cro
c
on
troller
Bas
e
d
Ho
me
S
e
c
u
r
i
t
y
S
y
s
t
e
m
w
i
t
h
G
S
M
T
e
c
h
n
o
l
o
g
y
.
Op
en Jo
ur
na
l of
S
a
f
e
ty S
c
ien
c
e
an
d T
echn
o
l
o
g
y
.
2
01
5;5(0
2
)
:5
5
.
[12]
Am
an
ullah
M
.
M
icroco
nt
roll
er
b
ased
r
ep
ro
gra
m
m
a
b
l
e
d
i
g
i
t
a
l
doo
r
l
o
ck
s
ecur
i
t
y
s
yst
e
m
by
u
si
ng
k
eypad
&
GS
M/
CDM
A
t
e
c
hn
ol
og
y.
IO
S
R
Jou
r
n
a
l
o
f
e
l
ect
ri
c
a
l
and E
l
ectr
o
n
i
cs
En
gin
eeri
ng (
I
OS
R-JEEE)
.
2
0
13;
4(6
)
:38
-
42.
[13]
Ch
owdh
ur
y
ZI
,
Imt
i
a
z
M
H
,
Az
a
m
M
M,
S
u
m
i
M
R
A,
N
u
r
N
S
,
e
dito
r
s
.
De
si
gn
a
nd
imp
l
em
entati
o
n
o
f
py
roelect
ric
inf
r
ared s
ens
o
r based
securi
ty
sy
s
t
e
m
u
s
in
g
m
i
cro
c
on
tro
l
l
e
r.
IEEE
T
ech
no
log
y
St
udent
s' S
y
mpo
s
i
u
m
; 20
11
:
I
E
EE.
[14]
Coo
r
po
ratio
n
A. A
tm
el
a
tm
ega3
28
p
d
a
tas
h
eet.
e
d;
2
0
1
1
.
[15]
Am
ad
i
DN
and
T
r
io
no
J.,
“
S
m
a
rt
H
om
e
D
e
velopm
en
t
Fo
r
H
o
me
S
ecu
ri
t
y
W
it
h
An
dro
i
d
Based
,
”
International
Jou
r
n
a
l
o
f
Ad
van
ced R
e
sear
ch in Co
mp
u
t
er S
c
ie
n
c
e
,
v
o
l
.
8
(
9
)
,
2
0
1
7
.
[16]
F
o
s
s
as
E
.
and
Oli
v
ar
G
.,
“
S
t
udy
o
f
c
h
a
os
i
n
th
e
bu
ck
c
o
n
v
e
rt
er,
”
IEE
E
Tr
an
sac
t
io
n
s
on
Cir
c
u
its
and
Sys
t
em
s I:
Fu
nd
am
ental Theor
y
an
d A
ppli
c
at
ions
,
v
o
l
.
4
3(1),
p
p.
1
3-2
5
,
1996.
[17]
Sch
e
l
l
e D. and
C
asto
rena J.,
Buck-converter design demyst
ified
.
Po
wer
Electro
ni
cs
T
echno
lo
gy
,
2006
.
[18]
Del
g
ad
o
A
R
,
Pi
cki
ng
R,
a
n
d
G
ro
ut
V
.,
R
emot
e-cont
rolled
h
o
m
e
a
ut
om
a
t
ion
s
y
stem
s
w
i
th
d
iff
e
rent
n
et
wor
k
tech
no
lo
gies.
2
0
0
6.
[19]
Zeyad
M.,
B
i
swas
P.,
I
q
bal
MZ
,
G
h
osh
S.,
and
Bi
swas
P.,
“
D
es
ign
i
n
g
of
M
icroc
o
ntroller
Based
Home
A
pp
liances
Go
vern
or
C
i
r
cuit
s,
”
Jou
r
na
l of Networ
ks
,
vo
l.
3
(2
),
pp.
5
8
-
63
,
20
1
8
.
[20]
Brag
i
n
sk
y
VB
,
Mitro
f
an
o
v
V, a
n
d
Pan
ov
VI
.
,
Syst
ems w
i
t
h
s
m
all dissipati
on
. Univ
ersi
ty o
f
Chicag
o P
r
ess, 1
98
5
B
I
OGRAPHIES
O
F AUTHO
RS
M
o
ham
m
a
d
Zey
a
d
rec
e
i
v
ed
h
is
B
S
c
i
n
Electri
cal
a
nd
E
lectroni
c
E
n
gin
e
eri
ng
d
e
gree
f
r
om
A
m
eri
can
I
nt
ernati
on
al
U
niv
e
rsity-Ban
glad
esh
(A
IUB)
i
n
20
17
w
it
h
a
concen
tra
t
i
o
n
i
n
t
h
e
f
i
e
ld
o
f
P
ow
er
E
l
ectronics
.
His
area
of
in
t
erest
i
s
i
n
P
o
wer Elect
ron
ics
Engineering
,
I
nt
ernet
of
T
h
i
ng
s
(Io
T),
Bio
m
ed
i
c
a
l
E
n
g
i
n
eerin
g,
W
ireless
Com
m
u
n
i
cati
o
n
,
M
i
c
roco
n
t
r
oll
e
r
based
syst
e
m
,
signa
l
p
r
ocess
i
n
g
et
c
. (m
oh
amm
a
dzeya
d
.aiu
b@gm
ail.c
o
m
)
S
u
s
m
i
t
a
G
h
o
s
h
o
b
t
a
i
n
e
d
h
e
r
B
S
c
d
e
g
r
e
e
i
n
E
E
E
(
2
0
1
1
)
a
n
d
M
E
n
g
d
e
gree
in
M
TEL
(2013),
F
acul
t
y
o
f
E
ngin
eering
f
r
om
A
m
e
rican
I
n
t
ern
a
tio
nal
Univ
ersit
y
-B
angl
a
d
esh
(AIU
B)
.
Current
ly
s
h
e
is
w
orking
as
Assistant
Prof
es
s
o
r
in
A
I
U
B
under
the
depart
m
en
t
o
f
E
EE,
F
acul
t
y
o
f
E
ngi
neeri
ng.
H
er
r
esear
ch
i
nteres
ts
a
re
i
n
th
e
fi
eld
o
f
P
ow
e
r
S
ys
te
m
Anal
ysis
,
Ren
e
wabl
e
E
n
ergy
a
nd
S
m
a
rt T
rans
po
rt
a
t
i
on
S
y
stem.
(
s
u
sm
itagh
o
sh
29
@gm
a
il.
c
om
)
S
.
M.
M
asum
A
h
m
ed
r
ecei
ved
hi
s
Bach
elo
r
o
f
S
c
ience
in
E
l
ectri
ca
l
&
E
lect
ron
i
c
E
ngin
e
e
r
i
n
g
d
e
gree
f
r
om
A
meri
can
I
n
t
ern
a
tio
nal
Un
iversit
y
-Bang
l
ad
esh
in
201
8
wi
th
c
on
c
e
n
tr
a
t
io
n
i
n
f
ie
l
d
o
f
R
enewab
le
E
nerg
y.
H
is
a
rea
of
i
n
t
erest
is
i
n
Renew
a
ble
Ener
g
y
(Co
n
cent
r
ate
d
S
ol
a
r
pow
er
and
Solar
PV
)
,
P
ower
E
ngi
neeri
n
g
(Micro-G
r
i
d
&
Power
Sys
t
e
m
P
ro
tection),
Pow
e
r
El
e
c
t
r
onics
,
Internet
o
f
T
h
i
ngs
(
IoT),
VHDL
a
nd
M
i
c
rocontroll
er
b
ased
s
yst
e
m
.
(m
asu
m
.ahm
ed
.aiu
b@g
m
ail.
co
m
)
Evaluation Warning : The document was created with Spire.PDF for Python.