T
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.
17
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6
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Evaluation Warning : The document was created with Spire.PDF for Python.
◼
IS
S
N: 16
93
-
6
93
0
T
E
L
KO
M
NIK
A
V
ol
.
17
,
No
.
5,
O
c
tob
er 20
19
:
25
0
5
-
25
11
2506
tr
an
s
m
i
s
s
i
on
.
Cur
r
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ni
q
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a
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nc
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b
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IT
ex
pe
r
ts
an
d
are a
v
ai
l
ab
l
e t
o a
n
y
o
ne
wi
th
t
he
proper
c
r
ed
en
t
i
al
s
an
d
an
In
terne
t
c
on
n
ec
ti
o
n
.
No
wada
y
s
,
c
l
o
ud
-
c
om
pu
ti
n
g
p
l
atf
orm
s
of
f
er
no
t
on
l
y
t
he
r
eq
u
i
r
ed
p
r
oc
es
s
i
ng
po
w
er
bu
t
a
l
s
o
th
e
s
torag
e
to
m
an
ag
e
v
as
t
s
en
s
or
d
ata
[8]
.
T
he
t
ota
l
up
t
i
m
e
of
the
s
e
p
l
atf
orm
s
c
on
ti
nu
es
to
i
nc
l
i
n
e
up
wa
r
ds
as
th
e
y
ge
t
c
o
n
c
i
l
i
ato
r
y
to
t
he
g
r
o
w
i
ng
r
e
qu
es
t
of
th
e
Io
T
w
orl
d
.
F
o
l
l
o
w
i
ng
the
Io
T
tr
en
ds
,
the
s
ug
ge
s
ted
ap
pro
ac
h
a
l
s
o
c
o
m
pris
es
Cl
ou
d
i
m
pl
em
en
tat
i
on
on
t
op
of
Ras
pb
e
r
r
y
P
i
2
W
S
N
ba
s
ed
t
e
m
pe
r
atu
r
e
an
d
i
l
l
um
i
na
ti
on
m
on
i
tori
ng
s
y
s
t
em
.
2.
S
y
st
em
O
v
er
v
iew
2.1
.
S
y
st
em Co
mp
o
n
ent
s
DHT
22
[9,
10
]
an
d
T
S
L
25
61
[11
,
12
]
s
en
s
ors
s
en
d
t
he
m
ea
s
ured
da
ta
to
t
he
W
e
m
o
s
.
W
e
m
o
s
i
s
l
oa
d
ed
wi
th
the
f
i
r
m
w
are
pro
gram
w
r
i
tte
n
i
n
C
tha
t
do
es
al
l
th
e
i
nte
r
f
ac
i
n
g
w
i
t
h
s
en
s
ors
,
proc
es
s
i
ng
t
he
s
e
ns
or
da
ta
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d
i
n
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ac
i
ng
wi
th
c
l
o
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pl
atf
orm
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d
f
i
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l
l
y
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pl
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ad
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ng
th
e
d
ata
to
the
N
od
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ed
MQT
T
B
r
ok
er
i
de
al
l
y
on
c
e
e
v
er
y
m
i
nu
t
e
[
13
,
1
4]
.
T
o w
r
i
t
e
th
e
c
od
e
a
nd
u
pl
o
ad
i
t
t
o
the
E
S
P
82
6
6
t
ha
t
W
e
m
os
an
d
N
od
e
MCU
h
as
,
V
i
s
ua
l
M
i
c
r
o
i
s
us
ed
.
V
i
s
ua
l
Mi
c
r
o
i
s
pa
r
t
of
V
i
s
u
al
S
tud
i
o
2
01
7
a
nd
ha
s
a
l
l
th
e
f
ea
ture
of
A
r
du
i
no
ID
E
.
T
wo
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ets
of
da
ta
f
r
o
m
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t
wo
W
e
m
o
s
tha
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ha
v
e
D
HT
22
a
nd
T
S
L
25
61
s
en
s
ors
ac
c
ord
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l
y
are
s
e
nd
to
Nod
eM
CU
tha
t
wor
k
s
a
s
i
nte
r
m
ed
i
at
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s
tat
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r
om
two
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no
d
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”
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W
e
m
os
)
prov
i
di
ng
ex
te
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c
om
m
un
i
c
ati
o
n
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t
wee
n
no
de
s
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d
r
ou
ter.
T
he
n
the
r
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ter
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ds
t
he
da
t
a
t
o
t
h
e
No
de
R
ed
MQT
T
brok
er,
whi
c
h i
s
l
oa
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d
to
th
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Ras
p
be
r
r
y
P
i
2,
a
nd
i
s
r
es
p
on
s
i
bl
e
to
pu
b
l
i
s
h
the
da
ta
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d
m
on
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tor
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m
v
i
a
t
he
S
m
art
-
P
ho
ne
A
pp
l
i
c
at
i
on
s
ho
w
n i
n
F
i
g
ure 1
, a
s
w
el
l
a
s
to
trans
f
er the
m
to
th
e M
on
go
D
B
i
n o
r
de
r
to
s
av
e
the
m
f
or
f
urther
an
a
l
y
s
i
s
a
nd
proc
es
s
s
ho
wn
i
n
F
i
g
ure
2
.
Dur
i
ng
t
hi
s
proc
es
s
w
e
m
ea
s
ure
the
P
o
w
er
Cons
um
pti
on
(
V
ol
t
a
nd
m
A
)
tha
t
W
e
m
os
ne
ed
o
n
e
v
er
y
l
i
f
e
c
y
c
l
e
de
e
p
s
l
ee
p
,
w
ak
e
-
up
tr
an
s
m
i
t/rec
ei
v
e
an
d
th
e
n d
ee
p s
l
ee
p
.
F
i
gu
r
e
1.
S
m
artpho
ne
ap
p
l
i
c
ati
on
UI
F
i
gu
r
e
2
.
I
oT
ne
t
w
ork
de
pl
o
y
m
e
nt
2.2.
H
ar
d
w
ar
e I
mp
l
ement
atio
n
T
he
tec
hn
i
c
a
l
s
pe
c
i
f
i
c
ati
o
n
of
the
h
ard
w
ar
e
c
om
po
ne
nts
us
ed
i
n
the
prop
os
ed
s
y
s
t
e
m
de
s
c
r
i
be
d
i
n
the
f
ol
l
o
wi
ng
.
Me
as
urem
en
t
r
an
ge
of
DHT
22
i
s
f
r
o
m
-
40
de
gre
e
c
en
ti
grade
to
80
de
gre
e
c
e
nti
grad
e
wi
th
r
es
po
ns
e
ti
m
e
of
2
s
ec
o
nd
s
.
Its
s
m
al
l
s
i
z
e,
l
o
w
po
we
r
c
on
s
um
pti
on
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10
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l
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prec
i
s
i
o
n DHT
11
s
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s
ors
c
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be
us
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.
T
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l
i
g
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or
(
T
S
L2
56
1
)
us
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nf
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T
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1
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or,
i
t
c
a
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m
ea
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m
al
l
Evaluation Warning : The document was created with Spire.PDF for Python.
T
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P
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as
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c
as
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tud
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V
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a
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aris
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2507
an
d
v
er
y
l
arge
am
ou
nts
of
l
i
gh
t
E
S
P
8
26
6
i
s
a
s
y
s
te
m
-
on
-
a
-
c
hi
p
(
S
oC)
de
s
i
gn
e
d
b
y
E
s
pres
s
i
f
S
y
s
tem
s
w
hi
c
h
i
s
ba
s
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n
32
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bi
t
R
IS
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wi
th
t
he
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en
s
i
l
i
c
a
X
ten
s
a
LX
1
06
p
r
oc
es
s
or
[15
,
16
]
.
I
t
h
as
f
ea
tures
l
i
k
e
i
nb
ui
l
t
W
i
-
F
i
(
80
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1
b/g
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n),
G
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en
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urpos
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/O
utp
ut),
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-
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r
ate
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r
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ui
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I²
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,
an
al
o
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to
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d
i
gi
tal
c
on
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i
o
n,
S
eria
l
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ph
er
al
I
nte
r
f
ac
e
(
S
P
I)
,
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A
RT
(
Uni
v
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al
as
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hro
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us
r
e
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an
s
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i
tte
r
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l
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e
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W
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e
m
o
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D1
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as
ed
on
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S
P
-
8
26
6
E
X
m
i
c
r
oc
on
tr
ol
l
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a
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c
a
n
be
us
ed
f
or
W
i
F
i
Int
erne
t
of
T
hi
ng
s
(
I
o
T
)
ap
pl
i
c
ati
on
s
[17
,
18
]
.
T
he
ni
n
e
Inp
ut/
O
ut
pu
t
p
i
n
m
a
k
es
thi
s
m
od
ul
e
qu
a
l
i
f
i
ed
f
or
bi
g
I
o
T
target
au
d
i
en
c
e.
It
i
s
an
ex
c
el
l
en
t
MCU
(
M
i
c
r
oc
on
tr
o
l
l
er
Un
i
t
)
tha
t
c
an
be
progr
am
m
ed
w
i
t
h
bo
t
h
A
r
d
ui
n
o
IDE
or
V
i
s
ua
l
Mi
c
r
o.
It
ha
s
m
i
c
r
o
US
B
po
r
t
f
or
au
t
o
progr
am
m
i
ng
an
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i
t
c
an
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l
s
o
be
progr
am
m
ed
us
i
ng
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T
A
(
O
v
er
T
he
A
i
r
)
f
un
c
ti
on
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A
t
t
he
on
e
s
i
d
e
of
t
he
bo
ar
d
the
r
e
i
s
a
of
E
S
P
8
2
66
m
o
du
l
e
a
nd
at
t
he
oth
er
the
r
e
are
a
CH3
40
s
er
i
a
l
to
U
S
B
c
hi
p,
a
r
es
et
bu
tto
n a
nd
a
P
C
B
a
nte
nn
a.
F
or
th
i
s
proj
ec
t
w
e
us
e
Node
MCU
(
E
S
P
82
6
6)
2
n
d
g
en
era
ti
on
v
er.1.0
w
h
i
c
h
h
as
i
nte
grate
d
T
CP
/I
P
protoc
o
l
s
tac
k
.
In
th
i
s
proj
ec
t
Nod
eM
CU
i
s
us
ed
as
an
i
nte
r
m
ed
i
ate
s
tat
i
o
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an
d
i
t
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on
ne
c
ts
to
t
he
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c
c
e
s
s
P
oi
nt
of
the
wi
r
el
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s
ne
t
wor
k
i
.e.
the
w
i
r
e
l
es
s
r
ou
ter
us
i
ng
th
e
S
S
ID
(
S
erv
i
c
e
S
et
Ide
nt
i
f
i
er)
an
d
the
p
as
s
wor
d
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the
n
et
wor
k
.
A
s
i
t
c
on
ne
c
ts
to
th
e
A
c
c
es
s
P
oi
nt
s
uc
c
es
s
f
ul
l
y
i
t
ge
ts
as
s
i
gn
ed
to
a
n
IP
an
d
j
o
i
nts
th
e
ne
t
w
ork
.
Mo
r
eo
v
er,
i
t
ac
ts
as
ga
te
wa
y
i
n
order
to
prov
i
d
e
th
e
m
ea
s
urem
en
ts
to
an
MQ
T
T
s
erv
er
b
as
ed
on
“
No
de
R
e
d”
[19
,
20
]
,
a
bro
w
s
er
-
ba
s
ed
progr
am
m
i
n
g
ed
i
tor
tha
t
e
as
i
l
y
an
y
on
e
c
an
c
on
n
ec
t
f
l
o
w
s
t
og
e
the
r
us
i
ng
a
v
ar
i
et
y
of
no
de
s
i
n
the
pa
l
et
te
[
21
]
s
ho
w
n
i
n
F
i
gu
r
e
3
.
A
l
l
t
he
s
e
c
oo
pe
r
ate
wi
t
h
th
e
Mo
n
go
D
ata
b
as
e,
whi
c
h
i
s
a
no
n
-
S
Q
L
da
t
ab
as
e,
b
ut
i
t
i
s
op
e
ns
ou
r
c
e
a
nd
m
an
y
us
ers
us
e
d
i
t
es
p
ec
i
al
l
y
f
or
IoT
(
Int
ernet
of
T
hi
ng
s
)
ap
p
l
i
c
at
i
on
s
[
22
]
.
F
i
gu
r
e
3.
N
od
eR
ed
de
p
l
o
y
m
en
t
MQ
T
T
s
erv
er
w
i
th
Q
ua
l
i
t
y
o
f
S
erv
i
c
e
(
Q
o
S
)
at
m
os
t
on
c
e,
m
ea
ns
th
at
t
he
m
i
ni
m
al
l
ev
e
l
i
s
z
ero
an
d
en
s
ur
es
a
b
es
t
ef
f
ort
de
l
i
v
er
y
.
T
hi
s
tec
h
ni
qu
e
c
al
l
ed
“
f
i
r
e
a
nd
f
orge
t”
w
h
i
c
h
gu
ara
nte
es
the
s
am
e
as
the
s
ub
j
ac
e
nt
T
CP
protoc
o
l
.
In
t
ha
t
c
as
e
the
m
es
s
ag
e
on
r
e
c
ei
v
er
wi
l
l
n
ot
ac
k
no
w
l
e
dg
e
d o
r
s
a
v
e
d a
n
d rede
l
i
v
ere
d b
y
t
he
s
e
nd
er
[23
,
24
]
.
N
o
w
i
n
ord
er
the
E
S
P
8
26
6
t
o
f
un
c
ti
o
n
ac
c
ord
i
n
g
to
t
he
proj
ec
t
r
eq
u
i
r
e
m
en
ts
,
the
E
S
P
8
26
6
ne
ed
s
to
be
progr
am
m
ed
.
T
hi
s
i
s
do
ne
b
y
c
o
nn
ec
t
i
ng
the
E
S
P
82
6
6
to
Mi
c
r
os
of
t
Evaluation Warning : The document was created with Spire.PDF for Python.
◼
IS
S
N: 16
93
-
6
93
0
T
E
L
KO
M
NIK
A
V
ol
.
17
,
No
.
5,
O
c
tob
er 20
19
:
25
0
5
-
25
11
2508
V
i
s
ua
l
S
t
ud
i
o
20
1
7
(
V
i
s
u
al
Mi
c
r
o)
r
un
ni
ng
on
a
P
C
v
i
a
UA
RT
i
nte
r
f
ac
e
(
S
en
d/
R
e
c
ei
v
e
p
i
ns
)
o
f
E
S
P
82
66
thro
ug
h
U
A
RT
to
U
S
B
c
on
v
erter
s
ho
wn
i
n
F
i
g
ure
3
,
an
d
th
e
c
om
pi
l
ed
progr
am
i
s
up
l
oa
d
ed
t
o
th
e f
l
as
h m
e
m
or
y
of
th
e
E
S
P
82
6
6
[2
5,
2
6
]
.
T
he
ba
tte
r
y
tha
t
i
s
us
e
d
f
or
al
l
t
es
ts
c
an
pro
v
i
de
whe
n
i
t
i
s
f
ul
l
y
c
ha
r
ge
d
4,
03
V
o
l
ts
an
d
22
73
m
A
h.
M
oreo
v
er,
w
e
are
us
i
n
g
a
b
oo
s
t
c
o
nv
e
r
ter
c
i
r
c
ui
t
w
h
i
c
h
prov
i
d
es
5V
s
up
pl
y
f
or
the
s
en
s
ors
as
wel
l
as
s
u
p
pl
y
to
the
W
e
m
os
as
s
ho
wn
i
n
F
i
g
ure
4
.
W
e
ha
v
e
m
ea
s
ure
th
at
th
e
bo
os
t
c
on
v
erter
c
i
r
c
ui
t
c
on
s
um
es
i
n
s
tan
da
l
on
e
m
od
e
10
μA.
T
he
W
e
m
os
bo
ard
al
s
o
m
ea
s
ured
i
n
t
erm
s
of
c
on
s
u
m
ed
c
urr
en
t
a
nd
f
ou
nd
th
at
i
t
c
on
s
um
es
i
n
de
ep
s
l
e
ep
m
od
e,
wi
t
h
W
i
F
i
O
ff
,
an
d
wi
th
ou
t s
e
ns
ors
24
0 μ
A
whi
l
e
when
the
s
e
ns
ors
are c
o
nn
ec
te
d c
on
s
um
es
27
0 μ
Α
.
F
i
gu
r
e
4
.
P
r
o
t
ot
y
p
e s
etu
p a
t l
a
b
w
i
th
d
ht
2
2
a
nd
wem
o
s
2.3
.
S
o
f
t
w
ar
e I
mp
lement
a
t
ion
T
he
V
i
s
ua
l
M
i
c
r
o
(
Mi
c
r
os
of
t
V
i
s
ua
l
S
tu
di
o
20
1
7)
-
Us
es
the
V
i
s
ua
l
S
tu
di
o
e
nv
i
r
on
m
en
t
to
w
r
i
te
th
e
f
i
r
m
w
are
i
n
C
l
a
n
gu
ag
e
i
nc
l
ud
i
n
g
th
e
r
eq
u
i
r
ed
he
ad
er
f
i
l
es
f
or
the
i
n
te
grati
o
n
of
DH
T
s
en
s
ors
an
d
t
he
i
nte
r
ac
ti
o
n
wi
th
Nod
eRe
d
an
d
M
on
g
o
DB
c
an
be
us
ed
t
o
progr
a
m
E
S
P
82
6
6
as
wel
l
.
T
hi
s
V
i
s
u
al
M
i
c
r
o
he
l
ps
to
w
r
i
te
,
c
om
pi
l
e
an
d
u
pl
o
ad
th
e
f
i
r
m
w
are
to
the
f
l
as
h
m
e
m
ory
of
the
E
S
P
8
26
6.
Mo
r
e
o
v
er,
th
e
r
eq
u
i
r
ed
l
i
brar
y
f
i
l
es
f
or
t
he
pro
gram
m
i
ng
are
ex
tr
ac
ted
a
nd
s
a
v
e
d
i
n t
he
f
ol
d
er po
i
nt
ed
as
l
i
br
ar
y
f
ol
d
er f
or the
V
i
s
ua
l
Mi
c
r
o
[25]
.
W
e
b
-
B
r
ow
s
er
UI
A
c
c
es
s
:
T
he
E
S
P
82
66
as
w
e
l
l
as
the
W
e
m
os
w
i
th
s
e
ns
ors
c
an
be
v
i
s
u
al
l
y
be
c
he
c
k
ed
throug
h
a
w
eb
-
bro
w
s
er
f
r
o
m
a
P
C
to
a
s
m
artpho
ne
.
T
h
e
m
ea
s
urem
en
ts
of
ea
c
h
s
en
s
or
de
p
i
c
ted
on
t
he
c
us
tom
i
z
ed
UI
t
ha
t
the
Node
R
ed
prov
i
d
es
.
T
he
i
n
t
erf
ac
e
c
an
be
ea
s
i
l
y
c
ha
ng
e
d
f
r
o
m
a
ga
ug
e
m
od
e
to
l
ab
el
ed
v
al
ue
.
O
nc
e
c
on
f
i
gu
r
ed
th
e
UI
p
r
ov
i
de
s
on
l
i
ne
r
ea
l
-
ti
m
e v
a
l
u
es
f
r
o
m
th
e s
en
s
ors
[27
-
3
0]
.
3.
F
low
S
t
eps
F
l
o
w
s
te
ps
as
s
ho
wn i
n Fi
g
ure 5
:
−
S
en
s
e
of
tem
pe
r
atu
r
e
an
d
i
l
l
um
i
na
ti
on
at
a
s
pe
c
i
f
i
c
l
oc
ati
o
n
of
a
r
ac
k
w
i
th
the
he
l
p
of
two s
en
s
ors
.
−
T
he
two
W
e
m
os
r
ec
ei
v
e
t
h
e
d
ata
f
r
om
the
s
en
s
ors
t
hrough
i
ts
G
P
IO
s
(
G
en
eral
P
urpos
e
I
np
u
t
O
utp
ut)
−
Data
are
tr
an
s
f
err
ed
to
the
E
S
P
82
66
(
F
i
gu
r
e
6)
w
h
i
c
h
ha
s
the
r
ol
e
of
i
nt
erm
ed
i
ate
s
tat
i
on
of
bu
f
f
erin
g d
at
a a
nd
c
on
ne
c
t
m
ore no
de
s
.
−
E
S
P
82
66
c
o
nn
ec
ts
t
o t
h
e
W
i
-
F
i
r
ou
ter us
i
n
g S
S
ID
an
d p
as
s
w
ord.
−
E
S
P
82
66
a
l
s
o
es
tab
l
i
s
he
s
c
on
ne
c
ti
on
to
t
he
MQ
T
T
s
er
v
er
w
h
i
c
h
r
an
un
de
r
Nod
eR
ed
p
l
atf
orm
i
n R
as
pb
err
y
P
i
2.
−
Ras
pb
err
y
P
i
2
s
en
ds
d
ata
t
o
a
P
C
th
at
r
un
s
Mo
ng
oD
B
a
nd
s
tor
es
the
v
a
l
u
es
f
or
f
urther pr
oc
es
s
i
ng
.
Evaluation Warning : The document was created with Spire.PDF for Python.
T
E
L
KO
M
NIK
A
IS
S
N: 1
69
3
-
6
93
0
◼
P
ower c
o
ns
um
pti
on
a
na
l
y
s
i
s
on
an
Io
T
n
etwo
r
k
b
as
ed
on
we
mo
s
: a
c
as
e s
tud
y
(
V
. K
a
na
k
aris
)
2509
F
i
gu
r
e
5
.
F
l
o
w
c
h
art of
c
od
e runn
i
n
g
on
w
em
os
F
i
gu
r
e
6
.
P
r
oto
t
y
p
e s
etu
p a
t l
a
b o
f
E
S
P
8
26
6
4.
Re
sult
s
A
s
the
pr
oto
t
y
p
e
s
y
s
tem
i
s
de
p
l
o
y
ed
at
a
s
et
up
,
t
he
l
i
v
e
da
t
a
i
s
b
ei
n
g
m
on
i
tore
d
ov
er
S
m
art
-
P
ho
ne
A
pp
l
i
c
a
ti
o
n
a
s
w
e
l
l
as
the
Mo
n
go
D
ata
ba
s
e.
T
he
A
pp
l
i
c
at
i
o
n
c
on
t
i
nu
ou
s
l
y
pres
en
ts
the
l
i
v
e
da
ta
.
In
the
f
ol
l
o
wi
ng
t
wo
gra
ph
s
pres
e
nte
d
t
he
p
o
w
er
c
on
s
um
pti
o
n
i
n
t
erm
s
of
ti
m
e
as
the
n
um
be
r
of
droppe
d
p
ac
k
ets
du
r
i
ng
t
he
10
-
da
y
c
om
m
un
i
c
ati
on
.
In
F
i
g
ure
7
the
graph
pres
en
ts
ho
w
t
he
ba
t
ter
y
po
wer
i
s
d
ep
l
ete
d
w
h
en
the
W
e
m
os
s
en
d
e
v
er
y
ha
l
f
m
i
nu
te
an
d
e
v
er
y
m
i
nu
te
r
es
pe
c
ti
v
el
y
.
B
y
s
e
l
ec
ti
ng
,
the
MQ
T
T
Q
oS
at
m
os
t
on
c
e
t
he
ba
tt
er
y
l
i
f
eti
m
e
i
nc
r
ea
s
ed
whi
l
e
av
o
i
d
i
ng
th
e
r
e
-
tr
an
s
m
i
s
s
i
on
s
.
T
he
graphs
i
n
F
i
g
ure
8
an
d
F
i
g
ure
9
s
ho
w
the
c
om
m
un
i
c
ati
on
q
ua
l
i
t
y
on
the
IoT
ne
t
wor
k
.
T
he
r
es
ul
ts
s
ho
w
th
at
on
l
y
7
pa
c
k
ets
l
os
t
o
n
t
o
ta
l
l
y
14
40
0
pa
c
k
ets
s
ho
wn
i
n
F
i
g
ure
8,
w
h
en
the
tr
a
ns
m
i
s
s
i
on
oc
c
ured
e
v
er
y
ha
l
f
m
i
nu
te,
wh
i
l
e
w
h
en
th
e
tr
as
m
i
s
s
i
on
oc
c
urr
ed
ev
er
y
m
i
nu
t
e
the
nu
m
be
r
of
pa
c
k
ets
tha
t
l
os
t
are
4,
al
t
ho
u
gh
the
MQ
T
T
Q
oS
s
erv
i
c
e
d
oe
s
n
’
t
pro
v
i
de
at
al
l
qu
a
l
i
t
y
b
y
no
t re
-
tr
a
ns
m
i
t
ti
ng
an
y
l
os
t p
ac
k
et.
F
i
gu
r
e
7.
B
att
er
y
po
w
er c
o
ns
um
pti
on
on
w
em
os
Evaluation Warning : The document was created with Spire.PDF for Python.
◼
IS
S
N: 16
93
-
6
93
0
T
E
L
KO
M
NIK
A
V
ol
.
17
,
No
.
5,
O
c
tob
er 20
19
:
25
0
5
-
25
11
2510
F
i
gu
r
e
8
.
C
om
m
un
i
c
ati
on
q
ua
l
i
t
y
w
h
en
t
he
wem
os
trans
f
er data
ev
er
y
0
.
5 m
i
n
F
i
gu
r
e
9
.
C
om
m
un
i
c
ati
on
q
ua
l
i
t
y
w
h
en
t
he
wem
os
tr
an
s
f
er data
ev
er
y
1 m
i
n
5
.
Co
n
clus
ion
A
n
IoT
ha
s
be
en
d
ep
l
o
y
e
d
us
i
n
g
t
w
o
wi
r
e
l
es
s
no
d
e
s
us
i
ng
W
e
m
o
s
bo
ard
ea
c
h
on
e
eq
u
i
pp
ed
w
i
t
h
a
tem
pe
r
atu
r
e
an
d
i
l
l
um
i
na
ti
o
n
s
en
s
or,
a
nd
a
Nod
eM
CU
whi
c
h
ac
ts
as
i
nte
r
m
ed
i
ate
s
tag
e
i
n
order
to
tr
an
s
f
er
da
ta
f
r
o
m
W
e
m
os
to
the
R
ou
t
er
an
d
f
r
o
m
the
r
e
to
the
MQ
T
T
B
r
o
k
er
an
d
the
M
on
g
oDB
.
A
c
on
t
i
n
uo
u
s
tes
t
r
un
of
m
ore
tha
n
21
i
terat
i
on
s
of
al
m
os
t
10
da
y
s
an
d
5
da
y
s
r
es
pe
c
ti
v
el
y
of
ea
c
h
i
tera
ti
on
,
s
ho
wi
n
g
a
l
m
os
t
the
s
am
e
pe
r
f
or
m
an
c
e
i
n
te
r
m
s
of
po
w
er
c
on
s
um
pti
on
.
T
he
ha
r
d
wa
r
e
s
etu
p
to
ge
t
he
r
wi
th
th
e
s
of
tware
f
r
om
the
N
o
d
eRed
p
l
atf
orm
,
Mo
ng
oD
B
an
d
S
m
art
-
P
ho
ne
A
p
p
prov
i
d
es
r
ea
l
ti
m
e
m
on
i
tori
n
g
of
the
p
aram
e
ters
r
em
ote
l
y
,
an
y
t
i
m
e
wi
th
t
he
h
el
p
of
the
da
s
hb
o
ard.
T
he
o
utc
om
e
of
thi
s
r
es
ea
r
c
h
r
ev
ea
l
s
tha
t
the
b
att
er
y
l
i
f
e
i
s
proport
i
o
na
l
to
t
he
f
r
eq
u
e
nc
y
th
at
th
e
d
ata
di
s
p
atc
he
d.
Us
i
n
g
th
e
MQ
T
T
s
erv
er
wi
th
Q
ua
l
i
t
y
of
S
erv
i
c
e
(
Q
oS
)
a
t
m
os
t
on
c
e,
i
nc
r
ea
s
es
t
he
l
i
f
e
of
the
ne
t
w
ork
b
y
s
y
c
r
i
f
i
c
i
n
g
the
c
om
m
un
i
c
ati
on
qu
a
l
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Ref
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[1
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F
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Be
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Io
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m
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A
p
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rm
a
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tu
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y
.
2
0
1
7
IEEE
3
rd
In
te
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a
ti
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Re
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u
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(RT
SI)
.
2017
:
1
-
5
.
[2
]
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T
h
o
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a
s
,
R
Mc
Ph
e
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,
G
Pa
u
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Irv
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Po
w
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Con
s
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W
i
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f
o
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Io
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Dev
i
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s
:
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M
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t
s
o
l
u
t
i
o
n
.
IEEE
Con
s
u
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El
e
c
tr
o
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i
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M
a
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a
z
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e
.
2
0
1
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5
(4
)
:
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-
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Dev
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.
2017
.
307
-
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[5
]
S
Ruk
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G
Vy
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S
Ba
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2
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14
-
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[6
]
IM
Ah
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JC
Ag
u
n
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Us
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a
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Ex
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2
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-
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[7
]
G
M
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s
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R
Pi
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a
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]
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Fe
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o
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Ste
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R
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F
Sa
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Com
m
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2
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Co
m
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ti
o
n
s
(CO
M
M
)
.
2018
:
397
-
4
0
2
.
[9
]
M
Bo
g
d
a
n
.
How
to
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D
HT
2
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s
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s
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w
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.
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Un
i
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ta
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i
s
Ci
b
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s
i
s
.
2
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;
68
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:
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.
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0
]
Dig
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[1
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Za
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W
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Se
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In
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.
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Ka
l
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Ba
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K
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Ka
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S
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Io
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:
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Cas
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Stu
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o
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a
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En
g
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Sc
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c
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&
T
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c
h
n
o
l
o
g
y
Re
v
i
e
w
.
2016
;
9
(2
).
[1
3
]
RK
Ko
d
a
l
i
,
KS
M
a
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s
h
.
A
low
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Q
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2
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.
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te
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Com
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In
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C
3
I),
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0
1
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2
nd
In
te
rn
a
ti
o
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Co
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0
1
6
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.
[1
4
]
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Sh
o
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Ra
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A
Ka
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(ICo
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)
.
2017
:
1
-
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[1
5
]
ESP8
2
6
6
Dat
a
s
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.
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J
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1
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.
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tt
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s
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]
RK
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S
a
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b
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C
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0
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.
2
0
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6
:
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-
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1
6
.
[1
8
]
A
M
c
Ew
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Cas
s
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o
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0
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D
e
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o
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E
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a
n
d
H.
Ca
s
s
i
m
a
l
l
y
[1
9
]
N
Sh
o
fa
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A.
Rak
h
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a
t
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a
h
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S
A
Ka
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m
a
h
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In
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0
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.1
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Q
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0
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T
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c
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o
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o
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y
(ICo
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)
.
2017
:
1
-
7.
[2
0
]
J
E
L
u
z
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ri
a
g
a
,
J
C
Can
o
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C
Cal
a
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M
a
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Pe
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Bo
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a
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Ap
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o
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s
(I
T
A)
.
2015
:
245
-
2
5
0
.
[2
1
]
Nod
e
-
RED
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