Co
m
pu
t
er
Science
a
nd
I
nfo
r
m
a
t
io
n T
ec
hn
o
lo
g
ies
Vo
l.
1
,
No
.
1
,
Ma
y
2
0
2
0
,
p
p
.
17
~
25
I
SS
N:
2722
-
3
2
2
1
,
DOI
: 1
0
.
1
1
5
9
1
/
csit
.
v
1
i1
.
p
1
7
-
25
17
J
o
ur
na
l ho
m
ep
a
g
e
:
h
ttp
:
//ia
e
s
p
r
ime.
co
m/in
d
ex
.
p
h
p
/csi
t
Sma
rt
ho
me a
uto
ma
tion towa
rds t
he develo
pmen
t
o
f
sm
a
rt
ci
ties
T
a
nweer
Ala
m
,
Abdu
lra
hm
a
n A.
Sa
lem
,
Ahm
a
d O
.
Als
ha
rif
,
Abdu
la
ziz
M
.
Alh
uja
ili
De
p
a
rtme
n
t
o
f
Co
m
p
u
ter
S
c
ien
c
e
,
F
a
c
u
lt
y
o
f
Co
m
p
u
ter an
d
In
f
o
rm
a
ti
o
n
S
y
ste
m
s,
Isla
m
ic Un
iv
e
rsit
y
o
f
M
a
d
in
a
h
,
S
a
u
d
i
Ara
b
ia
Art
icle
I
nfo
AB
S
T
RAC
T
A
r
ticle
his
to
r
y:
R
ec
eiv
ed
J
an
1
2
,
2
0
19
R
ev
is
ed
Dec
1
7
,
2
0
19
Acc
ep
ted
J
an
4
,
2
0
2
0
Th
e
h
o
m
e
a
u
to
m
a
ti
o
n
sy
ste
m
is
in
d
e
e
d
a
s
y
ste
m
th
a
t
o
ffe
rs
a
m
o
b
il
e
a
p
p
li
c
a
ti
o
n
to
m
o
n
it
o
r
it
th
r
o
u
g
h
th
e
sm
a
rtp
h
o
n
e
o
r
tab
let.
It
c
a
n
c
o
n
tro
l
h
o
m
e
a
p
p
li
a
n
c
e
s
li
k
e
li
g
h
t,
fa
n
s,
a
ir
c
o
n
d
it
io
n
s,
a
n
d
sm
a
rt
se
c
u
rit
y
lo
c
k
s,
e
tc.
Blu
e
to
o
th
o
r
W
i
-
F
i
is
u
se
d
f
o
r
r
e
m
o
te
c
o
n
t
ro
l
o
f
th
in
g
s
.
T
h
e
sm
a
rt
h
o
m
e
is
e
ss
e
n
ti
a
ll
y
h
o
w
it
lo
o
k
s:
a
u
t
o
m
a
ti
n
g
with
su
c
h
a
n
e
a
sy
to
u
c
h
o
f
a
b
u
tt
o
n
o
r
a
v
o
ice
c
o
m
m
a
n
d
th
e
a
b
il
it
y
t
o
m
a
n
a
g
e
th
in
g
s
a
c
ro
ss
t
h
e
h
o
m
e
.
S
e
v
e
ra
l
o
p
e
ra
ti
o
n
s
we
re
b
o
th
sim
p
le
a
n
d
e
x
trem
e
ly
lo
w
-
c
o
st,
su
c
h
a
s
s
e
tt
in
g
u
p
a
li
g
h
t
t
o
t
u
rn
o
n
a
n
d
o
ff
a
t
th
e
t
ime
o
f
y
o
u
r
m
o
m
e
n
t.
Oth
e
rs
n
e
e
d
m
u
c
h
m
o
re
m
o
n
e
y
a
n
d
re
so
u
rc
e
s,
in
c
l
u
d
i
n
g
a
d
v
a
n
c
e
d
sp
y
c
a
m
e
ra
s.
S
o
m
e
p
e
o
p
le
th
o
u
g
h
t
th
a
t
tec
h
n
o
lo
g
y
is
tak
i
n
g
a
re
a
ll
y
h
u
g
e
p
a
rt
o
f
o
u
r
li
v
e
s.
It
d
o
e
s!
w
e
’re
li
v
in
g
in
a
m
o
d
e
rn
g
e
n
e
ra
ti
o
n
wh
e
re
sm
a
rt
a
n
d
in
tell
ig
e
n
t
s
y
ste
m
s
a
re
n
e
c
e
ss
a
ry
to
b
e
th
e
re
wh
e
re
v
e
r
we
a
re
to
m
a
k
e
o
u
r
li
v
e
s
e
a
sie
r
a
n
d
m
u
c
h
b
e
tt
e
r,
fo
r
e
x
a
m
p
le,
we
c
a
n
d
o
m
a
n
y
t
h
i
n
g
s
fa
ste
r,
b
e
tt
e
r,
a
n
d
m
o
re
a
c
c
u
ra
te
.
K
ey
w
o
r
d
s
:
Ar
d
u
in
o
I
n
ter
n
et
o
f
th
in
g
s
Mo
b
ile
ap
p
s
Sm
ar
t c
ities
Sm
ar
t
home
T
h
is i
s
a
n
o
p
e
n
a
c
c
e
ss
a
rticle
u
n
d
e
r th
e
CC B
Y
-
SA
li
c
e
n
se
.
C
o
r
r
e
s
p
o
nd
ing
A
uth
o
r
:
T
an
wee
r
Alam
,
Dep
ar
tm
en
t o
f
C
o
m
p
u
ter
Scie
n
ce
,
Facu
lty
o
f
C
o
m
p
u
ter
an
d
I
n
f
o
r
m
atio
n
Sy
s
tem
s
,
I
s
lam
ic
Un
iv
er
s
ity
o
f
Ma
d
in
a
h
,
Sau
d
i A
r
ab
ia
.
E
m
ail:
tan
wee
r
0
3
@
iu
.
ed
u
.
s
a
1.
I
NT
RO
D
UCT
I
O
N
T
h
r
o
u
g
h
th
e
y
ea
r
s
wh
e
n
s
m
ar
t
s
y
s
tem
s
wer
e
th
e
o
n
ly
t
o
p
ic
th
at
all
p
eo
p
le
talk
i
n
g
a
b
o
u
t,
a
g
r
o
u
p
o
f
s
o
m
e
p
er
s
o
n
s
h
ad
a
n
id
ea
to
im
p
r
o
v
e
th
e
liv
in
g
s
ty
le
an
d
t
ak
in
g
m
o
d
er
n
tec
h
n
o
lo
g
y
in
t
o
co
n
s
id
er
atio
n
[
1
]
.
T
h
ey
f
o
u
n
d
o
u
t
th
at
it
wo
u
l
d
b
e
g
r
ea
t
if
h
o
u
s
es
will
h
av
e
s
o
m
eth
in
g
s
im
ilar
to
th
e
wa
y
o
f
h
u
m
an
-
lik
e.
Fo
r
ex
am
p
le,
we
m
ig
h
t
f
o
r
g
et
to
t
u
r
n
th
e
lig
h
ts
o
f
f
[
2
]
,
s
o
,
we
will
p
ay
m
o
n
ey
f
o
r
th
at
an
d
w
e
will
r
eg
r
et
it
at
th
e
en
d
o
f
th
e
m
o
n
th
,
s
o
th
ey
h
ad
s
o
m
eh
o
w
an
id
ea
o
f
h
a
v
in
g
a
Ho
m
e
Au
to
m
atio
n
S
y
s
tem
s
[
3
]
.
Ho
m
e
Au
to
m
atio
n
Sy
s
tem
s
ar
e
ap
p
licatio
n
s
th
at
h
a
v
e
th
e
ac
ce
s
s
ib
ilit
y
to
th
e
wh
o
le
h
o
u
s
e’
s
co
n
tr
o
ls
,
s
u
ch
as,
lig
h
ts
,
T
V,
AC
,
g
ar
ag
e,
d
o
o
r
s
,
an
d
s
o
o
n
[
4
]
.
Ho
m
e
au
to
m
atio
n
m
an
ag
em
en
t
s
y
s
tem
s
h
av
e
a
lway
s
f
u
tu
r
e
h
in
ts
.
L
ig
h
ts
will
tu
r
n
o
n
wh
en
en
te
r
in
g
th
e
r
o
o
m
,
Fan
s
will
b
e
ac
tiv
ated
wh
en
th
e
tem
p
er
at
u
r
e
is
to
o
lo
w,
Allo
w
th
e
f
am
ily
m
em
b
er
s
to
e
n
ter
th
e
h
o
u
s
e
th
r
o
w
s
ec
u
r
ity
lo
o
k
s
th
at
ca
n
d
etec
t
all
o
f
th
e
f
a
m
ily
m
em
b
e
r
s
[
5
]
.
Mo
s
tly
,
p
eo
p
le
will
th
in
k
th
is
is
u
n
r
ea
c
h
ab
le,
th
ey
will
s
ay
it’s
im
p
o
s
s
ib
le
b
u
t
ac
tu
ally
,
it
is
tr
u
e!
T
h
e
wa
y
th
at
p
eo
p
le
th
in
k
is
d
if
f
er
en
t
f
r
o
m
th
e
way
th
at
we
t
h
in
k
as
d
ev
elo
p
er
s
,
th
ey
th
in
k
it
n
ee
d
s
a
lo
t
o
f
d
e
v
ices
to
co
n
tr
o
l
th
e
en
tire
h
o
u
s
e
f
ield
s
,
b
u
t,
it
d
o
esn
’
t.
All
we
n
ee
d
is
o
n
e
s
m
ar
t
d
ev
ice
to
in
s
tall
th
e
ap
p
licatio
n
t
h
at
was
p
r
o
g
r
am
m
ed
f
o
r
a
s
p
ec
if
i
c
h
o
u
s
e
a
n
d
t
h
en
y
o
u
ca
n
r
u
n
th
is
ap
p
as
y
o
u
wa
n
t.
Ho
m
e
a
u
to
m
atio
n
s
y
s
tem
s
b
u
ilt to
b
e
s
tr
u
ctu
r
ed
as th
e
u
s
er
r
eq
u
ir
e
d
,
it is
r
ea
ch
ab
le
[
6
]
.
Fig
u
r
e
1
s
h
o
ws
th
e
s
tr
u
ctu
r
e
o
f
th
e
h
o
m
e
au
to
m
atio
n
s
y
s
tem
.
E
v
en
th
o
u
g
h
th
e
s
y
s
tem
h
as
th
e
s
ec
u
r
ity
p
ar
t
wh
ich
is
m
o
r
e
I
lik
e,
it
ca
n
d
etec
t
th
e
f
am
ily
m
em
b
er
s
u
s
in
g
a
s
ca
n
n
ed
f
ac
e
b
y
s
av
in
g
th
em
i
n
th
e
d
atab
ase
an
d
r
ec
all
t
h
at
p
ar
t
wh
ile
s
ca
n
n
in
g
,
s
o
it
will
im
m
ed
iately
o
p
e
n
th
e
d
o
o
r
w
h
en
an
y
m
em
b
er
o
f
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2722
-
3
2
2
1
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
,
V
o
l.
5
,
No
.
1
,
Ma
y
20
20
:
17
-
25
18
th
e
f
am
ily
is
th
er
e.
Du
r
in
g
th
e
ca
lcu
latio
n
o
f
th
e
p
er
ce
n
tag
e
an
d
o
f
h
av
in
g
a
lar
g
e
am
o
u
n
t
o
f
wasted
elec
tr
icity
p
o
wer
in
th
e
last
f
e
w
y
ea
r
s
,
a
n
d
s
o
m
e
o
th
er
in
f
o
r
m
atio
n
th
at
t
h
e
c
u
r
r
en
t
s
y
s
tem
s
h
av
e.
Ou
r
aim
is
to
h
av
e
th
e
ab
ilit
y
to
let
ev
er
y
o
n
e
liv
e
o
n
h
is
o
wn
life
s
ty
le,
er
asin
g
th
e
f
ea
r
o
f
th
iev
es
an
d
th
e
s
h
o
ck
af
ter
lo
o
k
in
g
at
th
e
en
e
r
g
y
b
ill.
No
m
atter
h
o
w
h
ar
d
we
will
wo
r
k
,
n
o
m
atter
h
o
w
m
u
c
h
th
e
y
wan
t
u
s
to
r
is
k
,
o
u
r
poi
n
t
is
walk
in
g
awa
y
a
f
ter
r
ec
o
g
n
izin
g
th
e
p
er
f
ec
t
s
m
ile
o
f
t
h
o
s
e
u
s
er
s
we
h
av
e.
W
e
wo
u
ld
d
ef
in
e
th
e
p
r
o
b
lem
as f
o
llo
w
s
:
1.
T
h
e
co
m
m
o
n
p
r
o
p
er
ty
o
f
s
u
cc
ess
an
d
th
e
ab
ilit
y
to
m
ak
e
th
e
h
o
u
s
e
as
less
en
er
g
y
co
s
t
as
p
o
s
s
ib
le
s
u
ch
as
h
av
in
g
th
e
s
af
ety
p
o
we
r
m
o
o
d
th
a
t
will
d
etec
t
if
th
e
r
e
is
n
o
o
n
e
i
n
s
id
e
a
r
o
o
m
f
o
r
a
c
o
u
p
le
o
f
m
in
u
tes
it will im
m
ed
iately
s
h
u
t th
e
p
o
wer
o
f
f
.
2.
T
h
e
tr
ag
ed
ies
h
a
p
p
en
e
d
to
h
o
u
s
es
b
y
th
iev
es
at
late
n
i
g
h
t
s
esp
ec
ially
wh
en
th
e
o
wn
e
r
s
ar
e
n
o
t
t
h
er
e
b
ec
au
s
e
th
eir
h
o
u
s
e
d
o
esn
’
t
p
r
o
v
id
e
an
y
s
ec
u
r
ity
s
y
s
tem
s
.
Fig
u
r
e
1
.
Ho
m
e
au
to
m
atio
n
s
y
s
tem
b
lo
ck
d
iag
r
am
T
h
e
b
lo
ck
ch
ai
n
tech
n
o
l
o
g
y
i
s
th
e
n
o
v
el
ap
p
r
o
ac
h
to
p
r
o
v
id
e
s
ec
u
r
ity
o
f
th
e
d
ata
g
ath
er
ed
f
r
o
m
B
lu
eto
o
th
o
r
wi
-
f
i
[
7
-
8
]
.
N
o
w
in
s
tead
o
f
tu
r
n
in
g
all
o
f
th
ese
co
n
tr
o
ls
o
f
f
b
y
g
o
in
g
to
ea
c
h
b
u
tto
n
an
d
s
witch
th
em
o
f
f
,
y
o
u
ca
n
ju
s
t
u
s
e
y
o
u
r
s
m
ar
t
d
ev
ice
an
d
s
witch
w
h
atev
er
y
o
u
wan
t
o
f
f
,
in
d
ee
d
,
it
will
r
ed
u
ce
t
h
e
tim
e
y
o
u
tak
e
to
m
ak
e
s
u
r
e
ab
o
u
t
all
o
f
y
o
u
r
h
o
u
s
e’
s
ar
ea
an
d
ch
ec
k
all
o
f
th
e
co
n
tr
o
ls
.
Ou
r
s
y
s
tem
s
wi
ll
also
h
av
e
less
co
s
t
co
m
p
ar
ed
with
an
y
n
o
r
m
al
elec
tr
icity
p
o
wer
s
in
ca
s
e
o
f
p
o
wer
s
af
ety
.
No
m
atter
h
o
w
b
ig
is
y
o
u
r
h
o
u
s
e,
th
e
s
y
s
tem
is
ca
p
ab
le
o
f
m
o
r
e
th
a
n
y
o
u
will e
v
er
im
ag
in
e.
A
q
u
esti
o
n
n
air
e
is
a
f
ast
an
d
e
f
f
ec
tiv
e
m
et
h
o
d
u
s
ed
to
ac
q
u
ir
e
in
f
o
r
m
atio
n
f
r
o
m
a
tar
g
ete
d
g
r
o
u
p
o
f
p
eo
p
le.
B
y
co
m
in
g
u
p
with
a
f
ew
q
u
esti
o
n
s
d
esig
n
ed
to
g
et
s
u
g
g
esti
o
n
s
an
d
th
e
o
p
in
io
n
s
o
f
th
e
ap
p
licatio
n
u
s
er
s
,
we
wer
e
ab
le
to
r
em
o
v
e
u
n
n
ec
ess
ar
y
f
u
n
ctio
n
s
an
d
p
r
o
v
id
e
m
o
r
e
s
u
itab
le
o
n
e
s
t
o
im
p
lem
en
t
in
t
h
e
ap
p
licatio
n
.
1
)
Hav
e
y
o
u
ev
er
h
ea
r
d
ab
o
u
t
Ho
m
e
Au
to
m
atio
n
Sy
s
tem
?
-
th
ey
s
ay
it’
s
a
tec
h
n
o
lo
g
y
th
at
co
u
ld
b
e
r
ea
lly
h
elp
f
u
l
in
th
e
f
u
tu
r
e.
2
)
Hav
e
y
o
u
ev
er
u
s
ed
t
h
e
H
o
m
e
Au
to
m
ati
o
n
Sy
s
tem
?
-
w
e
h
av
e
th
e
a
n
s
wer
s
as
ex
p
ec
ted
,
it’s
m
o
s
tl
y
n
ev
er
u
s
ed
it
b
ef
o
r
e
an
d
th
is
will
le
ad
u
s
to
o
u
r
g
o
al
wh
ich
is
lettin
g
ev
er
y
o
n
e
u
s
in
g
th
e
s
y
s
tem
ea
s
ily
an
d
co
m
f
o
r
tab
ly
.
3
)
W
h
at
wo
u
ld
y
o
u
p
r
ef
er
?
-
u
s
in
g
th
e
s
y
s
tem
as
a
s
m
ar
t
d
ev
ice
ap
p
licatio
n
ea
s
ier
f
o
r
m
o
s
t
o
f
th
e
u
s
er
s
b
ec
au
s
e
th
ey
ca
n
o
p
en
th
e
s
y
s
tem
f
aster
an
d
u
s
e
it.
4
)
Do
y
o
u
th
in
k
it's
a
g
o
o
d
id
ea
?
-
y
es,
it’s
a
g
o
o
d
id
ea
b
ec
au
s
e
t
h
e
s
aid
th
ey
ar
e
h
av
i
n
g
a
p
r
o
b
lem
with
th
e
elec
tr
icity
co
s
t
d
u
r
in
g
th
e
m
o
n
t
h
.
5
)
Do
y
o
u
th
in
k
it'
s
u
s
ef
u
l?
-
y
es,
also
b
ec
au
s
e
th
e
u
s
er
s
alwa
y
s
f
ac
i
n
g
th
e
s
am
e
p
r
o
b
l
em
f
o
r
th
e
h
u
g
e
c
o
s
t
o
f
elec
tr
ic
p
o
wer
.
6
)
Do
y
o
u
th
i
n
k
it
will
b
e
ea
s
y
to
u
s
e?
-
y
es,
we
ar
e
liv
in
g
in
a
m
o
d
er
n
ce
n
tu
r
y
th
at
e
v
er
y
o
n
e
ca
n
u
s
e
s
m
ar
t d
ev
ices so
ea
s
ily
an
d
th
ey
ar
e
f
am
iliar
with
t
h
is
k
in
d
o
f
tech
n
o
lo
g
y
.
T
h
e
r
est
o
f
th
e
p
ap
e
r
is
o
r
g
an
ized
a
s
f
o
llo
ws:
Sectio
n
I
I
r
ep
r
esen
ts
th
e
liter
atu
r
e
r
ev
iew,
s
ec
tio
n
I
I
I
r
ep
r
esen
ts
th
e
c
o
m
p
o
n
en
ts
o
f
th
e
s
y
s
tem
,
s
ec
tio
n
I
V
s
h
o
ws
th
e
m
eth
o
d
o
lo
g
ies
f
o
r
s
o
f
t
war
e
d
ev
elo
p
m
en
t,
s
ec
tio
n
V
r
ep
r
esen
ts
th
e
s
u
r
v
e
y
r
esu
lts
an
d
d
is
cu
s
s
io
n
an
d
s
ec
tio
n
VI
s
h
o
ws th
e
co
n
clu
s
io
n
.
Evaluation Warning : The document was created with Spire.PDF for Python.
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
S
ma
r
t h
o
me
a
u
t
o
ma
tio
n
to
w
a
r
d
s
th
e
d
ev
elo
p
men
t
o
f sma
r
t c
ities
(
Ta
n
w
ee
r
A
la
m
)
19
2.
L
I
T
E
R
AT
U
RE
R
E
VI
E
W
T
h
e
I
n
ter
n
et
o
f
T
h
in
g
s
(
I
o
T
)
d
u
r
in
g
th
e
last
f
ew
y
ea
r
s
was
u
s
ed
s
o
wid
ely
in
th
e
s
m
ar
t
h
o
u
s
e
s
y
s
tem
s
[
9
-
1
0
]
.
B
y
co
n
tr
o
llin
g
alm
o
s
t
all
ap
p
lian
ce
s
an
d
s
ec
u
r
ity
.
T
h
e
s
y
s
tem
co
n
s
is
ts
o
f
Ar
d
u
in
o
Un
o
B
o
ar
d
,
PIR
s
en
s
o
r
,
tem
p
er
atu
r
e
s
en
s
o
r
,
g
as
s
en
s
o
r
,
p
o
we
r
s
elec
t,
an
d
web
ap
p
licatio
n
s
.
GSM
i
s
u
s
ed
to
co
m
m
u
n
icate
t
h
e
m
icr
o
c
o
n
tr
o
ller
an
d
th
e
web
p
ag
e
a
n
d
f
ac
ilit
ates
en
er
g
y
m
an
a
g
em
en
t.
I
t
also
m
o
n
ito
r
s
th
e
ty
p
e
o
f
d
ev
ice
en
c
o
u
n
te
r
ed
at
h
o
m
e
an
d
ac
tiv
ates
th
e
o
p
er
at
io
n
s
.
T
h
e
s
en
s
o
r
p
ar
am
eter
s
will
b
e
s
to
r
ed
in
th
e
clo
u
d
.
T
h
e
s
y
s
tem
also
ca
n
b
e
u
s
ed
in
m
o
b
ile
h
ea
lth
ca
r
e,
tr
af
f
ic
m
an
ag
e
m
en
t,
an
d
s
o
o
th
er
s
.
I
n
th
e
2
1
s
t
ce
n
tu
r
y
,
th
er
e
was
a
m
a
n
t
h
at
h
ad
an
id
ea
w
h
ich
allo
wed
h
im
to
ac
ce
s
s
all
th
e
d
ev
ices.
No
w
we
ca
n
e
v
en
ac
ce
s
s
th
e
in
ter
n
et
with
o
n
ly
o
n
e
click
.
Ho
m
e
au
to
m
atio
n
i
s
a
m
o
b
ile
ap
p
licatio
n
f
o
r
th
e
s
af
ety
an
d
p
r
o
p
e
r
u
s
e
o
f
a
h
u
m
an
.
I
n
th
e
last
1
0
o
r
m
o
r
e
y
ea
r
s
ag
o
,
we
u
s
ed
to
s
witch
th
e
h
o
m
e
ap
p
lian
ce
s
m
an
u
ally
.
B
ased
o
n
th
e
d
if
f
icu
lt
ac
ce
s
s
.
At
th
e
b
e
g
in
n
in
g
o
f
th
is
n
ew
au
to
m
atio
n
,
it
w
as
n
o
t
co
n
s
id
er
ed
an
ef
f
ec
tiv
e
m
eth
o
d
y
et
.
As
tech
n
o
lo
g
y
h
as
im
p
r
o
v
ed
t
h
is
s
y
s
tem
to
c
o
n
tr
o
l
b
y
B
lu
et
o
o
th
m
o
d
u
les.
T
h
e
p
r
o
b
lem
w
ith
u
s
in
g
B
lu
eto
o
th
is
th
at
it
h
as
a
lim
it
o
f
th
e
wir
eless
r
an
g
e,
also
a
ch
an
ce
o
f
in
ter
f
er
en
ce
with
o
th
er
d
ev
ic
es
u
s
in
g
B
lu
eto
o
th
.
I
n
ad
v
a
n
ce
,
th
e
y
m
ad
e
th
is
k
in
d
o
f
a
u
to
m
atio
n
t
o
b
e
u
s
ed
u
s
in
g
An
d
r
o
id
b
y
an
d
r
o
id
m
o
b
ile
p
h
o
n
es
[
1
1
]
.
L
ately
,
th
ey
f
ig
u
r
e
d
o
u
t
a
s
y
s
t
em
th
at
ca
n
co
n
tr
o
l
an
d
m
o
n
i
to
r
th
e
h
o
m
e
ap
p
lian
ce
s
u
s
in
g
an
y
d
ev
ice
wh
ich
h
as a
n
in
ter
n
et
c
o
n
n
ec
tio
n
.
I
n
th
e
last
y
e
a
r
s
,
h
o
m
e
au
to
m
atio
n
h
as
ac
h
ie
v
ed
a
r
ea
lly
g
r
ea
t
jo
b
an
d
in
cr
ea
s
ed
th
e
co
m
f
y
o
f
a
life
s
ty
le.
Sm
ar
tp
h
o
n
es
ar
e
u
s
ed
to
co
n
t
r
o
l
all
o
f
t
h
eir
h
o
m
e
ap
p
lian
ce
s
.
Yo
u
ca
n
co
m
m
u
n
icate
with
all
th
e
h
o
m
e’
s
co
n
tr
o
ls
u
s
in
g
a
s
m
ar
t
d
ev
ice
in
clu
d
in
g
n
ew
tech
n
iq
u
es.
W
e
n
e
v
er
f
o
r
g
et
h
o
w
th
e
h
o
m
e
au
to
m
atio
n
h
as
ex
tr
em
ely
g
r
o
wn
,
th
ese
s
y
s
tem
s
h
av
e
b
ee
n
cr
ea
ted
to
im
p
r
o
v
e
th
e
co
m
f
o
r
tab
ilit
y
o
f
a
l
if
esty
le
esp
ec
ially
f
o
r
th
o
s
e
wh
o
ar
e
eld
er
ly
an
d
d
is
ab
led
th
ese
s
y
s
tem
s
ar
e
d
esig
n
ed
b
y
u
s
in
g
a
s
in
g
le
co
n
tr
o
ller
th
at
o
wn
s
th
e
ab
i
lity
co
n
tr
o
l in
ter
co
n
n
ec
ted
ap
p
lian
ce
s
s
u
ch
as lig
h
ts
,
T
Vs
,
an
d
s
o
o
n
.
T
h
e
m
o
s
t in
ter
esti
n
g
th
in
g
is
th
at
y
o
u
ca
n
co
n
tr
o
l
all
o
f
th
ese
ap
p
lian
ce
s
ea
s
ily
b
y
u
s
in
g
s
m
a
r
tp
h
o
n
es.
Ho
m
e
au
to
m
atio
n
s
y
s
tem
s
co
u
ld
b
e
co
n
tr
o
lled
th
r
o
w
s
o
m
e
m
eth
o
d
o
lo
g
ies
s
u
ch
as
B
lu
e
to
o
th
an
d
W
i
-
Fi.
B
lu
eto
o
th
is
a
tech
n
iq
u
e
th
at
is
s
ec
u
r
ed
an
d
lo
w
co
s
t
as
well.
T
h
e
h
ar
d
war
e
will
b
e
u
s
in
g
an
Ar
d
u
i
n
o
B
T
b
o
ar
d
an
d
c
ell
p
h
o
n
e
i
s
wir
eless
ly
u
s
in
g
B
lu
eto
o
th
.
T
h
e
s
m
ar
tp
h
o
n
e
u
s
es
th
e
ap
p
licatio
n
th
at
allo
ws
th
e
u
s
er
to
co
n
tr
o
l
th
ese
ap
p
li
an
ce
s
.
T
h
e
s
y
s
tem
also
u
s
es
p
ass
wo
r
d
s
to
m
a
k
e
s
u
r
e
it’s
n
o
t
g
o
i
n
g
t
o
b
e
u
s
ed
b
y
s
o
m
e
o
th
er
s
.
T
h
e
h
o
m
e
a
u
to
m
atio
n
s
y
s
tem
s
tr
u
ctu
r
al
d
iag
r
am
is
s
h
o
wn
in
Fig
u
r
e
2
.
Fig
u
r
e
2
.
Ho
m
e
au
to
m
atio
n
s
y
s
tem
s
tr
u
ctu
r
al
d
iag
r
am
Vo
ice
r
ec
o
g
n
itio
n
also
im
p
le
m
en
ted
b
y
a
r
esear
ch
e
r
.
An
d
r
o
id
OS
h
as
a
b
u
ilt
-
in
v
o
ice
r
ec
o
g
n
izin
g
f
ea
tu
r
e
ab
ilit
y
to
co
n
tr
o
l
th
e
h
o
m
e
ap
p
lian
ce
s
f
r
o
m
u
s
er
v
o
i
ce
co
m
m
an
d
s
[
1
2
]
.
T
h
e
ap
p
li
ca
tio
n
co
n
v
er
ts
th
e
v
o
ice
in
to
a
tex
t
a
f
ter
th
at
it
s
en
d
s
th
at
m
ess
ag
e
to
th
e
B
lu
eto
o
th
m
o
d
u
le
t
h
at
is
co
n
n
ec
ted
to
th
e
Ar
d
u
i
n
o
.
T
h
e
g
r
ea
t
th
i
n
g
o
f
th
is
v
o
ice
ap
p
licatio
n
tr
an
s
m
it
is
th
at
t
h
e
u
s
er
o
n
l
y
n
ee
d
s
to
p
r
o
n
o
u
n
ce
th
e
ap
p
licatio
n
n
am
e
th
r
o
w
th
e
m
icr
o
p
h
o
n
e
a
n
d
s
ay
th
e
co
m
m
an
d
s
th
at
h
e
wan
ted
to
d
o
s
u
ch
as
tu
r
n
th
e
lig
h
t
ON
o
r
OF
F.
B
y
u
s
in
g
th
is
k
in
d
o
f
h
o
m
e
c
o
n
tr
o
l,
th
e
u
s
er
d
o
esn
’
t
h
av
e
to
d
o
an
y
th
i
n
g
ex
ce
p
t
s
ay
in
g
th
e
wo
r
d
s
th
at
th
e
ap
p
licatio
n
will r
ec
o
g
n
ize
to
a
ch
iev
e
th
ese
co
m
m
a
n
d
s
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2722
-
3
2
2
1
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
,
V
o
l.
5
,
No
.
1
,
Ma
y
20
20
:
17
-
25
20
I
n
th
is
r
esear
ch
,
t
h
ey
'
v
e
ex
p
l
ain
ed
h
o
w
t
h
e
h
o
m
e
au
t
o
m
at
io
n
s
y
s
tem
wo
r
k
s
.
th
is
s
y
s
tem
wo
r
k
s
in
s
m
ar
t d
ev
ices u
s
in
g
th
e
an
d
r
o
i
d
ap
p
licatio
n
an
d
g
iv
es th
e
u
s
er
s
o
m
e
s
er
v
ices to
m
ak
e
th
is
tech
n
o
lo
g
y
ea
s
y
f
o
r
co
n
tr
o
llin
g
th
e
h
o
u
s
e.
T
h
ese
s
er
v
ices
ar
e
c
o
n
n
ec
ted
an
d
u
s
e
d
b
y
co
n
n
ec
tin
g
th
e
s
m
ar
t
d
e
v
ices
v
ia
B
lu
eto
o
th
tech
n
o
lo
g
y
b
u
t
it
ca
n
h
a
n
d
le
o
n
ly
2
4
d
e
v
is
es
at
m
o
s
t
at
th
e
s
am
e
tim
e
with
m
o
r
e
th
an
1
0
0
m
r
an
g
e
o
f
B
lu
eto
o
th
s
ig
n
als.
b
u
t
t
h
e
p
r
o
b
lem
in
th
is
r
esear
c
h
is
th
at
th
e
s
ig
n
al
h
as
a
lim
ited
r
an
g
e
to
b
e
co
n
tr
o
lled
an
d
it
will n
o
t w
o
r
k
with
a
b
ig
d
is
tan
ce
,
also
,
it’s n
o
t su
p
p
o
r
ted
b
y
W
i
-
Fi.
3.
SM
AR
T
H
O
M
E
AUTO
M
A
T
I
O
N
SY
ST
E
M
CO
M
P
O
N
E
NT
S
T
h
e
f
o
llo
win
g
ar
e
th
e
m
ain
co
m
p
o
n
e
n
ts
o
f
th
e
s
m
ar
t
h
o
m
e
a
u
to
m
atio
n
s
y
s
tem
.
−
User
in
ter
f
ac
e
−
Sm
ar
t d
ev
ice
−
Ar
d
u
in
o
−
An
d
r
o
id
a
p
p
licatio
n
-
b
ased
W
i
-
Fi
T
h
e
h
o
m
e
au
to
m
atio
n
s
y
s
tem
s
will
p
r
o
v
id
e
th
e
n
ee
d
an
d
th
e
u
s
er
r
eq
u
ir
em
en
ts
t
o
h
a
n
d
le
all
o
f
th
ese
p
r
o
b
lem
s
an
d
tr
ag
e
d
ies
th
at
co
u
ld
h
a
p
p
en
in
life
[
1
3
]
.
So
m
etim
es
we
ca
n
d
o
s
o
m
eth
in
g
to
h
a
n
d
le
th
ese
p
r
o
b
lem
s
.
B
u
t,
s
o
m
etim
es
we’
r
e
s
o
f
ar
awa
y
f
r
o
m
h
o
m
e
.
T
h
er
ef
o
r
e
,
th
e
b
est
way
to
th
in
k
ab
o
u
t
wh
ile
y
o
u
h
av
e
th
is
s
itu
at
io
n
is
b
y
u
s
in
g
th
ese
m
o
d
er
n
s
y
s
t
em
s
,
an
d
it
will b
e
as f
o
llo
w:
−
T
h
e
s
y
s
tem
will r
ed
u
ce
p
o
wer
co
n
s
u
m
p
tio
n
.
−
T
h
e
s
y
s
tem
will a
ls
o
r
ed
u
ce
m
an
u
al
p
o
wer
.
−
T
h
e
s
y
s
tem
will wo
r
k
ef
f
icien
t
ly
an
d
ef
f
ec
tiv
ely
.
−
T
h
e
s
y
s
tem
will wo
r
k
in
r
ea
l
-
l
if
e
tim
e.
−
T
h
e
s
y
s
tem
is
a
r
ea
l c
h
allen
g
e
f
o
r
p
e
o
p
le.
−
T
h
e
s
y
s
tem
h
as a
ls
o
p
o
wer
f
u
l
s
ec
u
r
ity
.
−
T
h
e
s
y
s
tem
will
also
in
clu
d
e
s
ca
n
n
in
g
ca
m
e
r
as
to
s
u
p
p
o
r
t
b
o
th
ca
s
es
wh
ich
ar
e
r
ec
o
g
n
i
zin
g
th
e
f
am
ily
m
em
b
er
s
an
d
r
ec
o
r
d
in
g
a
n
y
s
e
n
s
e
o
f
th
e
p
r
esen
ce
o
f
o
th
er
p
e
o
p
le
wh
o
a
r
e
r
o
u
n
d
in
g
th
e
h
o
u
se
I
n
o
r
d
er
to
f
ill
th
e
g
ap
o
f
wastin
g
th
e
p
o
wer
o
f
elec
tr
icity
i
n
th
e
h
o
u
s
es,
we
h
av
e
th
e
id
e
a
o
f
s
av
in
g
th
is
co
s
t
o
f
elec
tr
icity
wh
ich
h
as
b
ee
n
a
p
r
o
b
lem
in
th
e
las
t
f
ew
y
ea
r
s
.
Als
o
,
th
e
s
ec
u
r
ity
n
ee
d
ed
,
esp
ec
ially
wh
en
th
e
o
w
n
er
s
ar
e
f
a
r
awa
y
f
r
o
m
h
o
m
e
in
ca
s
e
o
f
tr
av
eli
n
g
o
r
o
th
er
r
ea
s
o
n
s
.
T
wo
m
ai
n
o
b
jectiv
es
will
b
e
co
v
er
ed
al
o
n
g
with
t
h
is
p
r
o
jec
t:
−
B
u
ild
in
g
an
ap
p
licatio
n
to
c
o
n
tr
o
l th
e
h
o
u
s
es’
ap
p
lian
ce
s
.
−
B
ased
o
n
W
i
-
Fi co
n
n
ec
tin
g
th
e
h
o
u
s
e
with
th
e
a
p
p
licatio
n
.
T
h
e
Fu
n
ctio
n
al
R
eq
u
ir
e
m
en
ts
ar
e
s
u
m
m
ar
ized
as f
o
llo
ws.
−
Ab
ilit
y
to
p
r
o
ce
s
s
d
ata
ac
co
r
d
i
n
g
to
u
s
er
c
h
o
ice.
−
Ab
ilit
y
to
ap
p
ly
t
h
e
u
s
er
co
m
m
an
d
s
im
m
ed
iately
.
−
Ab
ilit
y
to
s
witch
o
n
an
d
o
f
f
th
e
p
o
wer
.
−
Ab
ilit
y
to
r
ec
o
g
n
ize
f
am
ily
m
em
b
er
s
.
−
Ab
ilit
y
to
ac
ce
s
s
Ar
d
u
in
o
u
s
in
g
a
s
m
ar
tp
h
o
n
e.
T
h
e
n
o
n
f
u
n
c
tio
n
al
r
eq
u
ir
em
en
t is as f
o
llo
ws.
−
Acc
u
r
ac
y
.
−
Hig
h
s
ec
u
r
ity
.
4.
M
E
T
H
O
DO
L
O
G
I
E
S
I
n
th
is
r
esear
ch
,
we
u
s
e
wate
r
f
all
m
o
d
el,
"I
t
d
ef
i
n
es
s
o
m
e
b
asic
task
s
,
wh
ich
ar
e
ca
r
r
ied
o
u
t
in
s
eq
u
en
ce
r
eq
u
i
r
em
en
ts
d
ef
i
n
itio
n
,
ar
ch
itectu
r
e
d
esig
n
,
d
etailed
d
esig
n
,
im
p
lem
e
n
tati
o
n
,
co
m
p
o
n
en
t
v
er
if
icatio
n
,
in
teg
r
atio
n
v
e
r
if
icatio
n
,
an
d
r
e
q
u
ir
em
e
n
ts
v
alid
atio
n
.
E
ac
h
task
r
esu
lts
in
d
o
cu
m
en
ts
o
r
o
t
h
er
ar
tifa
cts
th
at
ar
e
u
s
ed
as
s
p
ec
i
f
icatio
n
s
f
o
r
th
e
n
e
x
t
task
,
e.
g
.
th
e
d
etailed
d
esig
n
s
p
ec
if
icati
o
n
f
o
r
m
s
th
e
b
asis
f
o
r
im
p
lem
en
tatio
n
task
.
I
n
th
e
"id
ea
l"
f
o
r
m
,
o
n
e
task
s
h
o
u
l
d
b
e
co
m
p
leted
b
ef
o
r
e
th
e
n
e
x
t
s
tar
ts
.
T
h
er
e
ar
e
h
o
wev
er
v
ar
ian
ts
with
o
v
er
la
p
p
in
g
task
s
,
an
d
th
ese
ar
e
p
r
o
b
ab
ly
u
s
ed
m
o
r
e
in
r
ea
lity
.
I
m
p
lem
en
tatio
n
s
tar
ts
wh
en
s
o
m
e
o
f
th
e
d
etailed
d
esig
n
is
r
ea
d
y
,
co
m
p
o
n
e
n
t
tes
ts
wh
en
co
m
p
o
n
en
ts
ar
e
im
p
lem
en
ted
.
T
h
e
f
o
llo
win
g
to
o
ls
ar
e
u
s
ed
in
t
h
e
d
ev
elo
p
m
en
t o
f
th
e
s
y
s
tem
.
−
cir
cu
ito
.
io
: is a
s
o
f
twar
e
th
at
u
s
es to
d
esig
n
th
e
b
lo
ck
d
i
ag
r
a
m
s
an
d
elec
tr
o
n
ic
cir
cu
its
.
−
T
in
k
er
ca
d
: I
t is a
s
o
f
twar
e
t
h
at
u
s
es to
d
esig
n
th
e
h
a
r
d
war
e.
−
d
r
aw.
io
: I
t is u
s
ed
to
d
esig
n
U
ML
d
iag
r
am
s
.
−
E
r
d
p
lu
s
: is u
s
ed
to
d
esig
n
an
e
n
tity
-
r
elatio
n
s
h
ip
d
ia
g
r
am
.
−
J
u
s
tin
m
in
d
: is a
s
o
f
twar
e
to
o
l
u
s
es to
m
ak
e
an
d
b
u
ild
t
h
e
in
t
er
f
ac
e
.
Evaluation Warning : The document was created with Spire.PDF for Python.
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
S
ma
r
t h
o
me
a
u
t
o
ma
tio
n
to
w
a
r
d
s
th
e
d
ev
elo
p
men
t
o
f sma
r
t c
ities
(
Ta
n
w
ee
r
A
la
m
)
21
Ar
d
u
in
o
s
o
f
twar
e
1
.
8
.
9
–
th
i
s
s
o
f
twar
e
is
u
s
ed
f
o
r
th
e
im
p
lem
en
tatio
n
o
f
t
h
e
a
p
p
lica
tio
n
in
th
e
co
d
in
g
p
ar
t.
B
lu
eto
o
th
Au
to
m
atio
n
–
th
is
ap
p
licatio
n
is
u
s
ed
to
co
n
n
ec
t
th
e
Ar
d
u
in
o
with
th
e
ap
p
lian
ce
s
as
th
e
co
n
n
ec
tio
n
p
ar
t b
etwe
en
th
e
u
s
er
an
d
th
e
s
y
s
tem
.
T
h
e
s
y
s
tem
s
h
o
u
ld
f
o
cu
s
o
n
h
elp
in
g
th
e
m
a
n
ag
em
e
n
t/ad
m
in
o
f
th
e
s
y
s
tem
:
F
o
r
th
e
m
an
a
g
em
en
t th
e
s
y
s
te
m
s
h
o
u
ld
h
av
e:
−
Ad
d
in
g
,
u
p
lo
ad
i
n
g
an
d
d
eletin
g
.
−
Pre
v
en
t u
n
a
u
th
o
r
ize
d
ac
ce
s
s
.
−
Mo
n
ito
r
all
th
e
a
p
p
lian
ce
s
d
is
tr
ib
u
ted
ar
o
u
n
d
th
e
h
o
u
s
e.
5.
RE
SU
L
T
S AN
D
D
I
SCU
SS
I
O
N
T
h
e
f
o
llo
win
g
in
ter
f
ac
es a
r
e
i
n
clu
d
ed
i
n
th
e
s
y
s
tem
.
a.
Or
g
an
izatio
n
ad
m
in
: a
d
m
i
n
s
h
o
u
ld
h
a
v
e
tr
ain
in
g
o
n
th
e
s
y
s
tem
to
b
e
a
b
le
to
ac
ce
s
s
th
e
d
ata
.
b.
Gen
er
al
ad
m
in
:
th
e
ab
ilit
y
to
g
iv
e
h
elp
to
th
e
u
s
er
ad
m
in
a
n
d
also
g
iv
e
p
er
m
is
s
io
n
to
th
e
u
s
er
to
ac
ce
s
s
all
th
e
co
v
er
ed
ap
p
lian
ce
s
in
t
h
e
h
o
u
s
e.
c.
User
co
n
n
ec
tio
n
: a
b
ilit
y
to
h
a
v
e
th
e
ch
o
ice
o
f
u
s
in
g
B
lu
eto
o
th
o
r
W
i
-
Fi.
d.
C
o
n
tr
o
llab
ilit
y
: th
e
ab
ilit
y
to
c
o
n
tr
o
l a
ll th
e
h
o
u
s
e
ap
p
lian
ce
s
.
T
h
e
f
o
llo
win
g
h
ar
d
war
e
is
r
eq
u
ir
ed
to
d
ev
elo
p
th
e
h
o
m
e
au
t
o
m
atio
n
s
y
s
tem
.
a.
Sm
ar
t D
ev
ice:
tab
lets
o
r
an
y
s
m
ar
t d
ev
ice.
b.
C
o
n
n
ec
tio
n
: Wh
ich
ca
n
b
e
s
u
p
p
o
r
ted
b
y
B
lu
eto
o
th
o
r
W
i
-
Fi.
c.
Ar
d
u
in
o
U
n
o
b
o
ar
d
: to
co
n
n
ec
t th
e
ap
p
lian
ce
s
with
th
e
s
y
s
tem
.
d.
T
h
e
Fo
llo
win
g
So
f
twar
e
r
eq
u
i
r
ed
e.
An
d
r
o
id
s
tu
d
i
o
: to
cr
ea
te
th
e
in
ter
f
ac
es,
an
d
im
p
lem
en
tatio
n
o
f
th
e
p
r
o
g
r
am
.
f.
Op
er
atin
g
s
y
s
tem
: A
n
d
r
o
i
d
.
g.
Ar
d
u
in
o
s
o
f
twar
e:
u
p
lo
a
d
th
e
co
d
es in
to
th
e
Ar
d
u
in
o
b
o
a
r
d
.
h.
Data
b
ase: SQL
s
er
v
er
m
an
ag
e
m
en
t stu
d
io
to
c
r
ea
tin
g
th
e
d
at
ab
ase.
Un
if
ied
Mo
d
elin
g
L
an
g
u
ag
e
(
UM
L
)
"Pr
o
v
id
e
th
e
d
ev
el
o
p
m
en
t
co
m
m
u
n
ity
with
a
s
tab
le
an
d
c
o
m
m
o
n
d
esig
n
la
n
g
u
a
g
e
th
at
co
u
ld
b
e
u
s
ed
to
d
e
v
elo
p
an
d
b
u
ild
c
o
m
p
u
te
r
ap
p
licatio
n
s
"
(
b
ell.
2
0
0
3
)
in
th
is
r
ep
o
r
t,
we
u
s
e
th
r
ee
ty
p
es o
f
UM
L
m
o
d
els,
wh
ich
ar
e:
−
Use
ca
s
e
d
iag
r
am
:
"A
u
s
e
c
ase
illu
s
tr
ates
a
u
n
it
o
f
f
u
n
c
tio
n
ality
p
r
o
v
id
e
d
b
y
th
e
s
y
s
tem
th
e
m
ai
n
p
u
r
p
o
s
e
o
f
th
e
u
s
e
-
ca
s
e
d
iag
r
a
m
is
to
h
elp
d
ev
elo
p
m
e
n
t
team
s
v
is
u
alize
th
e
f
u
n
ctio
n
al
r
e
q
u
ir
em
en
ts
o
f
a
s
y
s
tem
,
in
clu
d
in
g
t
h
e
r
elatio
n
s
h
ip
o
f
"a
cto
r
s
"
(
h
u
m
an
b
ein
g
s
wh
o
will
in
ter
ac
t
wit
h
th
e
s
y
s
tem
)
to
ess
en
tial
p
r
o
ce
s
s
e
s
,
as
we
ll
as
th
e
r
elatio
n
s
h
ip
s
am
o
n
g
d
if
f
er
en
t
u
s
e
ca
s
es
lik
e
as
s
h
o
wn
in
Fig
u
r
e
3
an
d
Fig
u
r
e
4
.
Fig
u
r
e
3
.
Use c
ase
d
iag
r
a
m
b
e
twee
n
u
s
er
an
d
h
ar
d
war
e
Fig
u
r
e
4
.
Use c
ase
d
iag
r
a
m
b
e
twee
n
u
s
er
an
d
s
m
ar
t a
p
p
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2722
-
3
2
2
1
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
,
V
o
l.
5
,
No
.
1
,
Ma
y
20
20
:
17
-
25
22
−
Activ
ity
d
iag
r
am
:
"Ac
tiv
ity
d
iag
r
am
s
s
h
o
w
th
e
p
r
o
ce
d
u
r
al
f
lo
w
o
f
co
n
tr
o
l
b
etwe
en
two
o
r
m
o
r
e
class
o
b
jects wh
ile
p
r
o
ce
s
s
in
g
an
ac
tiv
ity
lik
e
as sh
o
wn
in
Fig
u
r
e
5
.
Fig
u
r
e
5
.
Activ
ity
d
iag
r
am
o
f
t
h
e
s
y
s
tem
−
E
n
tity
R
elatio
n
s
h
ip
s
Diag
r
a
m
:
"is
u
s
ed
f
o
r
d
escr
ib
in
g
d
ata
an
d
th
e
r
elatio
n
s
h
ip
b
e
twee
n
d
if
f
er
en
t
en
titi
es
in
a
d
atab
ase.
I
t
cr
ea
t
es
a
v
is
u
al
m
ap
o
u
tlin
in
g
p
r
o
ce
s
s
r
eq
u
ir
em
en
ts
an
d
d
etaili
n
g
co
n
n
ec
tio
n
s
am
o
n
g
e
n
titi
es a
n
d
th
eir
attr
ib
u
tes.
−
B
lo
ck
Diag
r
am
:
a
h
ig
h
-
lev
el
d
iag
r
am
u
s
ed
in
en
g
in
ee
r
in
g
to
o
.
I
t’
s
also
u
s
ed
to
cr
ea
te
n
ew
s
y
s
tem
s
o
r
im
p
r
o
v
in
g
an
e
x
is
tin
g
s
y
s
tem
.
T
h
e
I
n
ter
f
ac
es o
f
s
m
ar
t a
p
p
c
an
b
e
s
ee
n
in
Fig
u
r
e
6
.
Evaluation Warning : The document was created with Spire.PDF for Python.
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
S
ma
r
t h
o
me
a
u
t
o
ma
tio
n
to
w
a
r
d
s
th
e
d
ev
elo
p
men
t
o
f sma
r
t c
ities
(
Ta
n
w
ee
r
A
la
m
)
23
Ou
r
s
y
s
tem
h
as
m
ad
e
to
h
elp
th
e
o
ld
est
an
d
d
is
ab
led
p
eo
p
le.
I
t
ca
n
b
e
u
s
ed
b
y
m
a
n
y
u
s
er
s
as
i
t
s
h
o
ws
in
th
e
r
ep
o
r
t.
T
h
e
s
y
s
tem
is
cr
ea
ted
to
d
o
wh
atev
er
th
e
u
s
er
wan
ts
f
o
r
co
n
tr
o
llin
g
th
e
h
o
u
s
e’
s
eq
u
ip
m
en
t
u
s
in
g
a
s
m
ar
t d
e
v
ic
e
th
at
ca
n
b
e
s
u
p
p
o
r
ted
b
y
o
u
r
p
r
o
g
r
am
m
in
g
lan
g
u
ag
e.
(
a)
(
b
)
(
c)
Fig
u
r
e
6
.
I
n
ter
f
ac
es o
f
s
m
ar
t
a
p
p
6.
DIS
CU
SS
I
O
N
A
s
u
r
v
ey
was
p
u
b
licly
o
p
en
e
d
in
th
e
ar
ea
o
f
Ma
d
in
ah
cit
y
.
Peo
p
les
wer
e
in
ter
ested
a
lo
t
in
th
is
s
y
s
tem
.
As a
r
esu
lt o
f
th
e
f
o
llo
win
g
s
u
r
v
ey
q
u
esti
o
n
s
is
m
en
t
io
n
ed
in
F
ig
u
r
e
7
.
-
Qu
e
)
1
)
Hav
e
y
o
u
ev
er
h
ea
r
d
ab
o
u
t H
o
m
e
Au
to
m
atio
n
Sy
s
tem
?
-
An
s
1
-
th
ey
s
ay
it’s a
tech
n
o
lo
g
y
th
at
co
u
ld
b
e
r
ea
lly
h
el
p
f
u
l
in
th
e
f
u
tu
r
e.
-
Qu
e
(
2
)
Hav
e
y
o
u
ev
er
u
s
ed
th
e
Ho
m
e
Au
to
m
atio
n
Sy
s
tem
?
-
An
s
2
-
we
h
av
e
th
e
an
s
wer
s
as
ex
p
ec
ted
,
it’s
m
o
s
tly
n
ev
er
u
s
ed
it
b
ef
o
r
e,
an
d
th
is
will
lead
u
s
to
o
u
r
g
o
al
wh
ich
is
lettin
g
ev
er
y
o
n
e
u
s
in
g
th
e
s
y
s
tem
ea
s
ily
an
d
co
m
f
o
r
tab
ly
.
-
Qu
e
(
3
)
W
h
at
wo
u
l
d
y
o
u
p
r
ef
er
?
-
A
n
s
3
-
u
s
in
g
th
e
s
y
s
tem
as
a
s
m
ar
t
d
ev
ice
ap
p
licatio
n
ea
s
ier
f
o
r
m
o
s
t
o
f
th
e
u
s
er
s
b
ec
au
s
e
th
ey
ca
n
o
p
e
n
th
e
s
y
s
tem
f
aster
an
d
u
s
e
it.
-
Qu
e
(
4
)
Do
y
o
u
th
in
k
it'
s
a
g
o
o
d
id
ea
?
-
An
s
4
-
y
es,
it’s
a
g
o
o
d
id
ea
b
ec
au
s
e
th
ey
s
aid
th
ey
ar
e
h
av
in
g
a
p
r
o
b
lem
with
th
e
elec
tr
icity
co
s
t
d
u
r
in
g
th
e
m
o
n
th
.
-
Qu
e
(
5
)
Do
y
o
u
th
in
k
it'
s
u
s
ef
u
l?
-
An
s
5
-
y
es,
also
b
ec
a
u
s
e
th
e
u
s
er
s
alwa
y
s
f
ac
in
g
th
e
s
am
e
p
r
o
b
lem
f
o
r
th
e
h
u
g
e
c
o
s
t o
f
ele
ctr
ic
p
o
wer
.
-
Qu
e
(
6
)
Do
y
o
u
th
in
k
it will b
e
ea
s
y
to
u
s
e?
-
An
s
6
-
y
es,
we
ar
e
liv
in
g
in
a
m
o
d
er
n
ce
n
tu
r
y
th
at
ev
er
y
o
n
e
ca
n
u
s
e
s
m
ar
t
d
ev
ices
s
o
ea
s
i
ly
an
d
th
ey
ar
e
f
am
iliar
with
th
is
k
in
d
o
f
tech
n
o
lo
g
y
.
T
h
e
ch
ar
ts
in
Fig
u
r
e
7
will
b
e
s
h
o
win
g
t
h
e
p
er
ce
n
tag
e
o
f
th
e
p
e
o
p
le
th
at
h
av
e
b
ee
n
g
iv
in
g
th
e
an
s
wer
s
f
o
r
th
e
s
u
r
v
ey
.
T
h
e
s
y
s
tem
is
im
p
lem
en
ted
as
a
m
o
b
ile
ap
p
licatio
n
u
s
in
g
An
d
r
o
id
tech
n
o
lo
g
y
s
h
o
w
n
in
Fig
u
r
e
8
.
W
e
co
n
s
id
er
Ma
d
in
ah
as
a
u
s
e
-
ca
s
e
city
.
I
t
is
wo
r
k
in
g
n
icely
.
I
t
m
ig
h
t
b
e
a
k
e
y
in
d
ev
elo
p
in
g
th
e
s
m
ar
t c
ities
.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2722
-
3
2
2
1
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
,
V
o
l.
5
,
No
.
1
,
Ma
y
20
20
:
17
-
25
24
Q1
.
Q
2
.
Q
3
.
Q
4
.
Q
5
.
Q
6
.
Fig
u
r
e
7
.
Su
r
v
ey
r
esu
lts
Fig
u
r
e
8
.
I
m
p
lem
en
tatio
n
Evaluation Warning : The document was created with Spire.PDF for Python.
C
o
m
p
u
t.
Sci.
I
n
f
.
T
ec
h
n
o
l.
S
ma
r
t h
o
me
a
u
t
o
ma
tio
n
to
w
a
r
d
s
th
e
d
ev
elo
p
men
t
o
f sma
r
t c
ities
(
Ta
n
w
ee
r
A
la
m
)
25
7.
CO
NCLU
SI
O
N
Sm
ar
t
s
y
s
tem
s
ar
e
a
d
esig
n
atio
n
th
at
is
g
iv
en
to
th
e
p
eo
p
le
wh
ich
m
ak
e
th
eir
liv
es
ea
s
ier
to
im
p
r
o
v
e
th
e
q
u
ality
an
d
ex
ec
u
tio
n
,
th
is
r
esear
ch
aim
s
to
p
r
o
v
id
e
a
n
ew
h
y
b
r
i
d
s
o
lu
tio
n
f
o
r
s
m
ar
t
h
o
u
s
es
th
at
is
co
m
b
in
e
m
o
b
ile
a
p
p
licatio
n
a
n
d
an
Ar
d
u
in
o
,
b
ec
au
s
e
Sm
ar
t
h
o
u
s
es
ar
e
alwa
y
s
f
o
cu
s
in
g
o
n
lev
elin
g
u
p
th
e
u
s
ab
ilit
y
s
ec
u
r
ity
as
well,
wit
h
th
e
u
s
e
o
f
th
is
s
o
lu
tio
n
f
o
r
g
iv
in
g
p
e
o
p
le
th
e
ch
an
ce
t
o
co
n
tr
o
l
th
eir
o
wn
h
o
u
s
es
it
will
b
e
a
h
elp
f
u
l
m
et
h
o
d
to
ac
h
iev
e
th
e
g
o
al
o
f
o
u
r
s
y
s
tem
.
as
we
m
en
tio
n
ed
b
e
f
o
r
e
o
u
r
s
y
s
tem
will
g
iv
e
th
e
ch
a
n
ce
to
th
e
u
s
er
to
ch
o
o
s
e
eith
er
B
lu
eto
o
t
h
o
r
W
i
-
Fi
in
th
is
r
ep
o
r
t
o
u
r
s
y
s
te
m
will
wo
r
k
o
n
ly
o
n
B
lu
eto
o
th
we
will b
e
wo
r
k
in
g
o
n
th
e
n
e
x
t p
r
o
ject
f
o
r
co
m
b
i
n
in
g
th
e
B
lu
eto
o
th
a
n
d
W
i
-
Fi to
g
eth
er
in
th
e
s
am
e
ap
p
licatio
n
as
th
e
u
s
er
wis
h
es.
Als
o
,
o
u
r
f
u
ll
ap
p
licatio
n
s
y
s
tem
will
b
e
r
ea
d
y
in
th
e
n
ex
t
r
ep
o
r
t
as
a
f
u
ll
v
er
s
io
n
an
d
we
will c
o
v
er
m
o
r
e
d
etails ab
o
u
t o
u
r
m
eth
o
d
s
an
d
im
p
lem
en
tatio
n
o
f
o
u
r
s
y
s
te
m
.
RE
F
E
R
E
NC
E
S
[1
]
Ala
m
T,
Be
n
a
id
a
M
.
“
Th
e
Ro
le
o
f
Clo
u
d
-
M
AN
ET
F
ra
m
e
wo
rk
in
th
e
In
tern
e
t
o
f
Th
i
n
g
s
(Io
T)”
,
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
On
li
n
e
E
n
g
i
n
e
e
rin
g
(
iJO
E)
.
Vo
l.
1
4
(1
2
),
p
p
.
9
7
-
1
1
1
.
DO
I:
h
tt
p
s://
d
o
i.
o
rg
/1
0
.
3
9
9
1
/i
j
o
e
.
v
1
4
i1
2
.
8
3
3
8
.
[2
]
Teja
n
i,
D
h
iren
,
Ali
M
o
h
a
m
m
e
d
AH
Al
-
Ku
wa
ri,
a
n
d
Vi
d
y
a
sa
g
a
r
P
o
td
a
r.
"
En
e
rg
y
c
o
n
se
rv
a
ti
o
n
in
a
sm
a
rt
h
o
me
.
"
I
n
2
0
1
1
5
th
IEE
E
I
n
tern
a
ti
o
n
a
l
Co
n
f
e
re
n
c
e
o
n
Dig
i
tal
Eco
sy
ste
m
s a
n
d
Tec
h
n
o
lo
g
ies
,
p
p
.
2
4
1
-
2
4
6
.
IEE
E
,
2
0
1
1
.
[3
]
Ala
m
,
Tan
we
e
r.
"
M
id
d
lew
a
re
Im
p
lem
e
n
tatio
n
i
n
Cl
o
u
d
-
M
AN
ET
M
o
b
i
li
ty
M
o
d
e
l
fo
r
I
n
tern
e
t
o
f
S
m
a
rt
De
v
ice
s",
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
C
o
mp
u
ter
S
c
ien
c
e
a
n
d
Ne
two
rk
S
e
c
u
rity
,
1
7
(5
),
2
0
1
7
.
p
p
.
8
6
-
94
.
[4
]
Eh
sa
n
i,
F
a
rz
a
d
,
S
il
k
e
M
a
re
n
W
i
tt
-
Eh
sa
n
i,
a
n
d
Walter
Ro
la
n
d
i.
"
S
m
a
rt
h
o
m
e
a
u
to
m
a
ti
o
n
s
y
ste
m
s
a
n
d
m
e
th
o
d
s.
"
U.S
.
P
a
ten
t
9
,
2
3
0
,
5
6
0
,
issu
e
d
Ja
n
u
a
ry
5
,
2
0
1
6
.
[5
]
Ala
m
T,
Be
n
a
i
d
a
M
.
CIC
S
:
Cl
o
u
d
–
I
n
tern
e
t
C
o
m
m
u
n
ica
ti
o
n
S
e
c
u
r
it
y
F
ra
m
e
wo
rk
f
o
r
th
e
In
ter
n
e
t
o
f
S
m
a
rt
De
v
ice
s
.
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
In
t
e
ra
c
ti
v
e
M
o
b
il
e
T
e
c
h
n
o
lo
g
ies
(iJIM
)
.
2
0
1
8
No
v
1
;
1
2
(
6
):7
4
-
8
4
.
DO
I
:
h
tt
p
s:/
/d
o
i.
o
rg
/
1
0
.
3
9
9
1
/i
ji
m
.
v
1
2
i6
.
6
7
7
6
.
[6
]
Tan
we
e
r
Ala
m
,
Ba
h
a
Ra
b
a
b
a
h
,
"
Co
n
v
e
r
g
e
n
c
e
o
f
M
AN
ET
in
Co
m
m
u
n
ica
ti
o
n
a
m
o
n
g
S
m
a
rt
De
v
ice
s
in
I
o
T"
,
In
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
W
ire
les
s
a
n
d
M
icr
o
wa
v
e
T
e
c
h
n
o
l
o
g
ie
s(IJ
W
M
T
)
,
Vo
l.
9
,
No
.
2
,
p
p
.
1
-
1
0
,
2
0
1
9
.
DO
I:
1
0
.
5
8
1
5
/
ij
wm
t.
2
0
1
9
.
0
2
.
0
1
.
[7
]
Tan
we
e
r
Ala
m
,
“
Io
T
-
F
o
g
:
A
Co
m
m
u
n
ica
ti
o
n
F
ra
m
e
wo
rk
u
sin
g
B
lo
c
k
c
h
a
in
in
t
h
e
In
ter
n
e
t
o
f
Th
in
g
s”
,
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Rec
e
n
t
T
e
c
h
n
o
l
o
g
y
a
n
d
En
g
i
n
e
e
rin
g
(IJ
RT
E)
,
Vo
lu
m
e
-
7
,
Iss
u
e
-
6
,
2
0
1
9
.
[8
]
Tan
we
e
r
Ala
m
,
“
Blo
c
k
c
h
a
in
a
n
d
it
s
R
o
le
in
th
e
I
n
tern
e
t
o
f
Th
in
g
s
(I
o
T)”,
I
n
ter
n
a
t
io
n
a
l
J
o
u
rn
a
l
o
f
S
c
ien
t
if
i
c
Res
e
a
rc
h
in
Co
mp
u
ter
S
c
ien
c
e
,
En
g
i
n
e
e
rin
g
a
n
d
I
n
fo
rm
a
ti
o
n
T
e
c
h
n
o
l
o
g
y
,
v
o
l
.
5
(1
)
,
p
p
.
1
5
1
-
1
5
7
,
2
0
1
9
.
DO
I
:
h
tt
p
s:/
/d
o
i.
o
rg
/
1
0
.
3
2
6
2
8
/CS
EIT
1
9
5
1
3
7
.
[9
]
Ala
m
,
Tan
we
e
r.
(2
0
1
8
)
"
A
re
li
a
b
le
fra
m
e
wo
rk
fo
r
c
o
m
m
u
n
ica
ti
o
n
in
in
ter
n
e
t
o
f
sm
a
rt
d
e
v
ic
e
s
u
sin
g
IEE
E
8
0
2
.
1
5
.
4
.
"
ARP
N
J
o
u
rn
a
l
o
f
E
n
g
i
n
e
e
rin
g
a
n
d
A
p
p
li
e
d
S
c
ien
c
e
s
.
1
3
(1
0
),
3
3
7
8
-
3
3
8
7
.
[1
0
]
Tan
we
e
r
Ala
m
,
"
A
Re
li
a
b
le
Co
m
m
u
n
ica
ti
o
n
F
ra
m
e
wo
rk
a
n
d
I
ts
Us
e
in
In
tern
e
t
o
f
Th
in
g
s
(Io
T)
"
,
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
S
c
ien
t
if
ic
Res
e
a
rc
h
in
Co
m
p
u
ter
S
c
ie
n
c
e
,
En
g
in
e
e
ri
n
g
a
n
d
In
f
o
rm
a
ti
o
n
T
e
c
h
n
o
lo
g
y
(IJ
S
RCS
EI
T
)
,
Vo
lu
m
e
3
,
Iss
u
e
5
,
p
p
.
4
5
0
-
4
5
6
,
M
a
y
-
Ju
n
e
.
2
0
1
8
URL:
h
tt
p
:
//
ij
src
se
it
.
c
o
m
/CS
EIT
1
8
3
5
1
1
1
.
[1
1
]
Da
v
id
,
Na
th
a
n
,
Ab
a
f
o
r
Ch
ima
,
A
ro
n
u
Ug
o
c
h
u
k
wu
,
a
n
d
Ed
o
g
a
Ob
i
n
n
a
.
"
De
sig
n
o
f
a
h
o
m
e
a
u
to
m
a
ti
o
n
sy
ste
m
u
sin
g
a
rd
u
in
o
.
"
In
ter
n
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
S
c
ien
ti
fi
c
&
En
g
in
e
e
rin
g
Res
e
a
r
c
h
6
,
n
o
.
6
(2
0
1
5
):
7
9
5
-
8
0
1
.
[1
2
]
Ab
id
i,
M
.
Eb
ra
h
im,
A
n
i
Li
z
a
A
sn
a
wi,
N.
F
M
Az
m
in
,
A.
Z
.
Ju
s
o
h
,
S
.
No
o
r
jan
n
a
h
Ib
ra
h
im,
H
u
d
a
Ad
ib
a
h
M
o
h
d
Ra
m
li
,
a
n
d
No
ru
n
A
b
d
u
l
M
a
lek
.
"
De
v
e
lo
p
me
n
t
o
f
Vo
ice
C
o
n
tr
o
l
a
n
d
H
o
me
S
e
c
u
rity
fo
r
S
ma
rt
Ho
m
e
Au
t
o
ma
ti
o
n
.
"
In
2
0
1
8
7
th
I
n
tern
a
ti
o
n
a
l
C
o
n
fe
re
n
c
e
o
n
C
o
m
p
u
ter
a
n
d
Co
m
m
u
n
ica
ti
o
n
E
n
g
in
e
e
rin
g
(ICCCE)
,
p
p
.
1
-
6
.
IEE
E,
2
0
1
8
.
[1
3
]
G
u
n
g
e
,
Va
ish
n
a
v
i
S
.
,
a
n
d
P
ra
ti
b
h
a
S
.
Ya
lag
i.
"
S
m
a
rt
h
o
m
e
a
u
t
o
m
a
ti
o
n
:
a
li
tera
tu
re
re
v
iew
.
"
In
te
rn
a
ti
o
n
a
l
J
o
u
rn
a
l
o
f
Co
m
p
u
ter
A
p
p
l
ica
ti
o
n
s
.
9
7
5
(
2
0
1
6
):
8
8
8
7
.
Evaluation Warning : The document was created with Spire.PDF for Python.