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1].
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Col
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l
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[
7].
Evaluation Warning : The document was created with Spire.PDF for Python.
IS
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1
693
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T
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[9]
.
P
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S
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on:
W
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t
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t
o
de
s
i
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gl
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s
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e
s
for
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he
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nd.
W
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p
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s
e
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rs
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o
d
e
t
e
c
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obs
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a
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l
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w
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n
i
ng
no
obs
t
ru
c
t
i
on,
“
L
e
ft
”
a
s
s
ound
1
m
e
a
ni
ng
t
he
r
e
i
s
obs
t
ru
c
t
i
on
on
t
he
l
e
ft
,
“
R
i
ght
”
a
s
s
ound
2
m
e
a
ni
n
g
t
h
e
re
i
s
obs
t
ruc
t
i
on
on
t
he
r
i
gh
t
,
“
L
e
ft
a
nd
Ri
gh
t
”
a
s
s
oun
d
3
m
e
a
ni
ng
t
h
e
re
a
r
e
obs
t
r
uc
t
i
ons
o
n
t
he
l
e
ft
a
nd
ri
g
ht
,
“
F
ront
”
a
s
s
ound
4
m
e
a
n
i
ng
t
he
re
i
s
o
b
s
t
ruc
t
i
on
i
n
fron
t
,
“
F
ron
t
a
nd
L
e
ft
”
a
s
s
ound
5
m
e
a
ni
n
g
t
h
e
re
a
r
e
obs
t
r
uc
t
i
ons
i
n
fron
t
a
nd
on
t
he
l
e
f
t
,
“
F
ront
a
n
d
Ri
ght
”
a
s
s
oun
d
6
m
e
a
ni
ng
t
h
e
re
a
re
obs
t
ruc
t
i
o
ns
i
n
fro
nt
a
nd
on
t
h
e
ri
g
ht
,
“
F
ron
t
,
L
e
ft
,
a
n
d
Ri
g
ht
”
a
s
s
ound
7
m
e
a
n
i
ng
t
he
r
e
a
r
e
obs
t
ruc
t
i
o
ns
i
n
front
,
o
n
t
he
l
e
ft
,
a
nd
on
t
h
e
ri
gh
t
.
T
hi
s
w
i
l
l
h
e
l
p
t
he
bl
i
nd
pe
opl
e
t
o
kn
ow
w
h
i
c
h
s
i
d
e
t
he
re
i
s
a
n
obs
t
r
uc
t
i
on
.
2.
R
ES
EA
R
C
H
M
ET
H
O
D
2.
1
.
A
tm
e
ga
8535
mi
c
r
oc
on
t
r
ol
l
e
r
F
or
t
hi
s
de
vi
c
e
,
w
e
a
r
e
us
i
n
g
A
t
m
e
g
a
8535
m
i
c
roc
ont
ro
l
l
e
r.
T
he
A
T
m
e
ga
8535
i
s
a
l
ow
-
p
ow
e
r
CM
O
S
8
-
bi
t
m
i
c
r
oc
on
t
ro
l
l
e
r
ba
s
e
d
o
n
t
h
e
A
V
R
e
nh
a
nc
e
d
RIS
C
a
r
c
hi
t
e
c
t
u
re
.
By
e
x
e
c
u
t
i
n
g
i
ns
t
ruc
t
i
o
ns
i
n
a
s
i
n
gl
e
c
l
o
c
k
c
yc
l
e
,
t
he
A
T
m
e
ga
85
35
a
c
h
i
e
ve
s
t
hrou
gh
put
s
a
ppro
a
c
h
i
ng
1
M
IP
S
pe
r
M
H
z
a
l
l
ow
i
ng
t
he
s
ys
t
e
m
d
e
s
i
gn
e
r
t
o
op
t
i
m
i
z
e
pow
e
r
c
o
ns
um
p
t
i
o
n
v
e
rs
us
p
roc
e
s
s
i
n
g
s
p
e
e
d.
T
he
A
V
R
c
ore
c
om
b
i
n
e
s
a
ri
c
h
i
ns
t
ru
c
t
i
on
s
e
t
w
i
t
h
32
ge
n
e
ra
l
purpos
e
w
ork
i
ng
re
g
i
s
t
e
r
s
.
A
l
l
32
re
gi
s
t
e
rs
a
re
di
r
e
c
t
l
y
c
o
nne
c
t
e
d
t
o
t
he
a
ri
t
hm
e
t
i
c
l
o
gi
c
u
ni
t
(A
L
U
),
a
l
l
ow
i
ng
t
w
o
i
nd
e
p
e
nde
nt
r
e
gi
s
t
e
rs
t
o
b
e
a
c
c
e
s
s
e
d
i
n
on
e
s
i
ngl
e
i
ns
t
ruc
t
i
o
n
e
xe
c
ut
e
d
i
n
one
c
l
oc
k
c
yc
l
e
.
T
he
r
e
s
ul
t
i
ng
a
r
c
hi
t
e
c
t
ur
e
i
s
m
ore
c
od
e
e
f
fi
c
i
e
nt
w
h
i
l
e
a
c
hi
e
vi
ng
t
hro
ughpu
t
s
up
t
o
t
e
n
t
i
m
e
s
fa
s
t
e
r
t
h
a
n
c
onv
e
n
t
i
on
a
l
CIS
C
m
i
c
ro
c
on
t
rol
l
e
rs
.
F
i
gur
e
1
i
s
s
how
i
ng
t
he
A
t
m
e
g
a
85
35
pi
n
c
onf
i
gur
a
t
i
on
.
F
i
gure
1
.
A
t
m
e
ga
853
5
P
i
n
C
onfi
g
ura
t
i
on
[10
,
11]
2.
2
.
U
l
t
r
as
on
i
c
s
e
n
s
o
r
T
he
ul
t
ra
s
on
i
c
s
e
ns
or
bl
oc
k
prov
i
de
s
t
h
e
i
nput
for
t
h
e
m
i
c
roc
o
nt
ro
l
l
e
r.
U
l
t
ra
s
on
i
c
i
s
s
o
und
w
i
t
h
a
fre
q
ue
n
c
y
gr
e
a
t
e
r
t
ha
n
t
h
e
upp
e
r
l
i
m
i
t
of
h
um
a
n
h
e
a
r
i
ng
(g
re
a
t
e
r
t
ha
n
20
kH
z
)
[1
2,
13
].
T
he
s
p
e
e
d
of
s
ound
de
pe
nds
on
t
he
m
e
di
u
m
t
he
w
a
v
e
s
pa
s
s
t
hrough
,
a
nd
i
s
a
fu
nda
m
e
n
t
a
l
prop
e
rt
y
of
t
he
m
a
t
e
ri
a
l
.
F
or
e
xa
m
p
l
e
,
t
he
s
pe
e
d
of
s
ound
i
n
g
a
s
e
s
de
pe
n
ds
on
t
e
m
pe
r
a
t
ure
.
T
h
e
s
pe
e
d
of
s
oun
d
a
t
20
°C
(68°
F
)
a
i
r
a
t
s
e
a
l
e
v
e
l
i
s
a
pprox
i
m
a
t
e
l
y
343
.
37
m
/
s
[14,
15]
.
U
l
t
ra
s
o
ni
c
s
e
ns
ors
a
r
e
s
e
ns
ors
t
ha
t
w
o
rk
on
t
h
e
pr
i
nc
i
pl
e
o
f
t
he
r
e
fl
e
c
t
i
on
of
s
ound
w
a
ve
s
,
w
h
e
r
e
t
hi
s
s
e
ns
or
pr
oduc
e
s
s
ound
w
a
ve
s
w
hi
c
h
t
he
n
c
a
t
c
h
i
t
b
a
c
k
w
i
t
h
t
i
m
e
di
f
fe
r
e
nc
e
a
s
t
he
b
a
s
i
s
of
s
e
ns
i
ng.
T
he
t
i
m
e
d
i
ff
e
re
n
c
e
b
e
t
w
e
e
n
t
h
e
s
o
und
w
a
v
e
s
e
m
i
t
t
e
d
by
t
h
e
re
c
a
p
t
ur
e
d
s
ou
nd
w
a
ve
s
i
s
di
r
e
c
t
l
y
pro
port
i
on
a
l
t
o
t
h
e
di
s
t
a
nc
e
or
h
e
i
gh
t
of
t
h
e
ob
j
e
c
t
t
ha
t
r
e
f
l
e
c
t
s
i
t
.
T
yp
e
s
of
o
bj
e
c
t
s
t
ha
t
c
a
n
be
s
e
ns
e
d
i
nc
l
ude
:
s
ol
i
d
obj
e
c
t
s
,
l
i
qu
i
d
,
gr
a
nu
l
e
s
a
nd
t
e
x
t
i
l
e
s
.
F
i
gu
re
2
i
s
s
how
i
ng
ho
w
ul
t
ra
s
on
i
c
s
e
ns
or
w
orks
.
Evaluation Warning : The document was created with Spire.PDF for Python.
T
E
L
K
O
M
N
IK
A
T
e
l
e
c
o
m
m
u
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Co
m
pu
t
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Co
nt
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l
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s
f
or
t
he
bl
i
nd
us
i
ng
pi
ng
ul
t
r
as
o
ni
c
,
A
T
M
E
G
A
8
535
,
a
nd
ISD
25
120
(
H
ar
t
on
o
S
i
s
wono
)
947
U
l
t
ra
s
o
ni
c
s
e
ns
or
i
s
a
s
e
ns
or
t
ha
t
ut
i
l
i
z
e
s
ul
t
ra
s
on
i
c
w
a
v
e
e
m
i
s
s
i
on
.
T
hi
s
u
l
t
r
a
s
oni
c
s
e
ns
or
c
o
ns
i
s
t
s
of
a
n
u
l
t
r
a
s
oni
c
t
r
a
ns
m
i
t
t
e
r
c
i
r
c
ui
t
c
a
l
l
e
d
a
t
r
a
ns
m
i
t
t
e
r
a
nd
a
n
ul
t
ra
s
on
i
c
r
e
c
e
i
ve
r
c
i
r
c
ui
t
c
a
l
l
e
d
a
re
c
e
i
v
e
r.
U
l
t
ra
s
o
und
s
e
ns
ors
a
r
e
v
e
ry
ve
rs
a
t
i
l
e
i
n
di
s
t
a
nc
e
m
e
a
s
ur
e
m
e
nt
.
T
he
y
a
r
e
a
l
s
o
p
rovi
di
ng
t
h
e
c
he
a
pe
s
t
s
ol
ut
i
ons
.
U
l
t
ra
s
ou
nd
w
a
v
e
s
a
r
e
us
e
fu
l
f
or
bot
h
t
he
a
i
r
a
nd
u
nde
rw
a
t
e
r
.
U
l
t
ra
s
on
i
c
s
e
ns
ors
a
re
a
l
s
o
qu
i
t
e
fa
s
t
for
m
os
t
of
t
h
e
c
om
m
on
a
ppl
i
c
a
t
i
ons
[
16
-
18
].
2.
3
.
P
I
N
G
T
he
P
a
ra
l
l
a
x
P
IN
G
)))
s
e
n
s
or
i
s
us
e
d
i
n
t
h
i
s
proj
e
c
t
.
It
provi
d
e
s
pr
e
c
i
s
e
,
non
-
c
on
t
a
c
t
d
i
s
t
a
nc
e
m
e
a
s
ure
m
e
n
t
s
fro
m
a
bou
t
2
c
m
t
o
3
m
e
t
e
rs
[
19
].
T
h
e
P
a
ra
l
l
a
x
P
IN
G
s
e
ns
or
d
e
t
e
c
t
s
ob
j
e
c
t
s
b
y
e
m
i
t
t
i
ng
a
s
hor
t
ul
t
ra
s
on
i
c
burs
t
a
nd
t
h
e
n
re
c
e
i
vi
ng
t
h
e
e
c
h
o.
U
nd
e
r
c
ont
r
ol
of
a
hos
t
m
i
c
roc
ont
ro
l
l
e
r
(t
r
i
gg
e
r
pul
s
e
),
t
he
s
e
ns
or
e
m
i
t
s
a
s
hort
ul
t
ra
s
on
i
c
bu
rs
t
(40
kH
z
).
T
h
i
s
b
urs
t
t
ra
ve
l
s
t
hrou
gh
t
h
e
a
i
r,
h
i
t
s
a
n
obj
e
c
t
a
nd
t
h
e
n
bounc
e
s
ba
c
k
t
o
t
he
s
e
ns
or
.
T
h
e
s
e
ns
or
pr
ovi
d
e
s
a
n
out
pu
t
p
ul
s
e
t
o
t
h
e
hos
t
t
ha
t
w
i
l
l
t
e
rm
i
na
t
e
w
h
e
n
t
he
e
c
ho
i
s
de
t
e
c
t
e
d,
a
nd
t
he
w
i
dt
h
of
t
hi
s
pu
l
s
e
c
orre
s
p
onds
t
o
t
h
e
di
s
t
a
n
c
e
t
o
t
he
t
a
rge
t
.
T
h
e
P
a
r
a
l
l
a
x
P
IN
G
s
e
ns
or
ha
s
a
m
a
l
e
3
-
p
i
n
he
a
d
e
r
us
e
d
t
o
s
upp
l
y
pow
e
r
(5
V
)
,
gr
ound
(G
N
D
),
a
nd
s
i
gn
a
l
[
2
0
,
2
1
].
F
i
gur
e
3
i
s
s
how
i
n
g
t
he
P
IN
G
)))
s
e
ns
or
.
F
i
gure
2
.
H
ow
ul
t
ra
s
o
ni
c
s
e
ns
ors
w
ork
[
22
-
2
4
]
F
i
gure
3
.
T
he
P
IN
G
)))
s
e
ns
or
2.
4
.
S
ou
n
d
r
e
c
o
r
d
e
r
I
C
I
S
D
25120
F
i
gure
4
i
s
s
how
i
ng
IS
D
25120
d
e
vi
c
e
p
i
nout
s
.
T
h
i
s
vo
i
c
e
r
e
c
ordi
ng
I
C
i
s
a
t
ype
of
IS
D
25120
,
t
hi
s
IC
h
a
s
28
pi
n
a
nd
t
hi
s
IC
ha
s
480
kB
i
n
t
e
rn
a
l
m
e
m
ory
a
nd
s
u
ppl
i
e
d
w
i
t
h
vo
l
t
a
ge
of
5V
D
C
.
T
h
e
I
C
i
s
c
a
p
a
bl
e
of
s
t
or
i
ng
s
oun
ds
w
i
t
hi
n
a
d
ura
t
i
on
of
1
20
s
e
c
onds
.
R
e
ga
r
di
n
g
t
h
e
de
t
a
i
l
s
a
nd
func
t
i
o
ns
of
t
he
pi
n
,
w
e
c
a
n
s
e
e
on
t
he
IC
da
t
a
s
he
e
t
.
T
h
i
s
vo
i
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IS
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l
a
s
s
e
s
,
w
i
t
h
t
h
e
pos
i
t
i
on
of
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he
s
e
ns
or
i
n
fron
t
,
r
i
gh
t
s
i
d
e
,
a
nd
l
e
f
t
s
i
d
e
.
T
hi
s
t
ool
onl
y
s
e
ns
e
s
t
he
o
bj
e
c
t
s
t
ha
t
a
re
i
n
fro
nt
,
r
i
gh
t
s
i
de
,
a
nd
t
h
e
l
e
f
t
s
i
de
of
t
h
e
t
oo
l
.
T
he
re
s
u
l
t
i
n
g
s
ound
i
s
ba
s
e
d
on
pre
v
i
ous
l
y
r
e
c
o
rde
d
s
ound
o
n
t
h
e
IS
D
25120
s
ound
r
e
c
or
di
ng
IC
.
IC
IS
D
25120
ha
s
t
he
fu
nc
t
i
on
a
s
a
vo
i
c
e
re
c
ord
e
r
a
n
d
a
s
a
v
oi
c
e
pl
a
ye
r
t
h
a
t
h
a
s
b
e
e
n
re
c
ord
e
d.
T
h
e
s
ound
na
m
i
ng
i
n
t
he
t
a
bl
e
(s
ound
1
,
s
o
und
2,
e
t
c
.
)
,
i
s
m
e
re
l
y
a
s
ou
nd
s
e
c
ur
i
t
y
s
e
q
ue
n
c
e
on
t
hi
s
IS
D
25120
IC
.
T
h
e
r
e
a
re
e
i
gh
t
t
ype
s
of
voi
c
e
w
h
i
c
h
a
r
e
re
c
ord
e
d
i
nt
o
IS
D
2512
0,
w
hi
c
h
a
re
n
o
s
ound
a
s
s
ound
0
m
e
a
n
i
ng
no
obs
t
ruc
t
i
o
n,
“
L
e
ft
”
a
s
s
ound
1
m
e
a
n
i
ng
t
he
r
e
i
s
o
bs
t
ru
c
t
i
on
on
t
h
e
l
e
ft
,
“
Ri
gh
t
”
a
s
s
ound
2
m
e
a
ni
ng
t
h
e
re
i
s
obs
t
ruc
t
i
o
n
on
t
he
r
i
gh
t
,
“
L
e
ft
a
nd
Ri
gh
t
”
a
s
s
ound
3
m
e
a
n
i
ng
t
h
e
r
e
a
r
e
obs
t
ruc
t
i
ons
o
n
t
h
e
l
e
ft
a
nd
r
i
gh
t
,
“
F
ront
”
a
s
s
o
und
4
m
e
a
n
i
ng
t
h
e
r
e
i
s
o
bs
t
ru
c
t
i
on
i
n
fron
t
,
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F
ront
a
nd
L
e
ft
”
a
s
s
o
und
5
m
e
a
n
i
ng
t
h
e
re
a
re
obs
t
ruc
t
i
o
ns
i
n
f
ront
a
nd
on
t
he
l
e
ft
,
“
F
ro
nt
a
nd
R
i
gh
t
”
a
s
s
o
und
6
m
e
a
ni
n
g
t
h
e
r
e
a
r
e
o
bs
t
ru
c
t
i
ons
i
n
fron
t
a
n
d
on
t
h
e
ri
g
ht
,
“
F
ron
t
,
L
e
ft
,
a
n
d
Ri
ght
”
a
s
s
oun
d
7
m
e
a
ni
ng
t
he
re
a
r
e
obs
t
ru
c
t
i
ons
i
n
fron
t
,
on
t
h
e
l
e
f
t
,
a
nd
on
t
he
ri
g
ht
.
T
hi
s
w
i
l
l
he
l
p
t
he
b
l
i
nd
p
e
opl
e
t
o
know
w
hi
c
h
s
i
de
t
he
r
e
i
s
a
n
obs
t
ru
c
t
i
o
n.
4.
C
O
N
C
LU
S
I
O
N
In
t
h
i
s
t
oo
l
,
w
e
us
e
d
3
s
e
ns
ors
pl
a
c
e
d
o
n
t
h
e
fr
ont
(s
e
ns
or
1),
r
i
gh
t
s
i
d
e
(s
e
ns
o
r
2)
,
a
n
d
l
e
ft
s
i
de
(s
e
ns
or
3)
gl
a
s
s
e
s
,
w
he
r
e
e
a
c
h
s
e
ns
or
i
s
c
onn
e
c
t
e
d
t
o
A
T
M
E
G
A
8535
m
i
c
roc
o
nt
ro
l
l
e
r,
w
hi
c
h
t
he
n
c
ont
r
ol
s
t
o
c
a
l
l
s
ou
nd
o
n
IS
D
251
20
i
f
t
he
s
e
ns
or
s
e
ns
e
s
obs
t
a
c
l
e
s
or
obj
e
c
t
s
.
T
he
r
e
a
re
8
s
ound
c
ond
i
t
i
ons
g
e
n
e
ra
t
e
d
ba
s
e
d
on
t
he
s
e
ns
i
ng
r
e
s
ul
t
s
o
f
t
he
t
hr
e
e
P
IN
G
s
e
ns
ors
m
o
unt
e
d
o
n
t
h
i
s
g
l
a
s
s
e
s
.
T
h
e
pr
e
vi
ous
l
y
ge
ne
r
a
t
e
d
s
ound
i
s
r
e
c
orde
d
o
n
t
h
e
IS
D
25
120
s
ound
r
e
c
or
di
ng
I
C;
t
h
e
r
e
fore
,
w
he
n
t
he
c
o
m
bi
n
a
t
i
on
of
t
h
e
t
hr
e
e
s
e
ns
ors
i
s
on
,
t
he
pro
gra
m
on
t
he
m
i
c
roc
ont
ro
l
l
e
r
onl
y
c
a
l
l
s
t
he
r
e
c
orde
d
s
ound
.
O
v
e
r
a
l
l
t
hi
s
t
oo
l
c
a
n
w
ork
w
e
l
l
i
f
obj
e
c
t
s
or
obs
t
a
c
l
e
s
a
re
i
n
t
he
pos
i
t
i
on
u
p
t
o
a
di
s
t
a
nc
e
of
58
c
m
fro
m
t
he
t
ool
.
R
EF
ER
EN
C
ES
[
1]
S
c
hw
e
i
z
e
r
H
.
,
“
S
m
a
r
t
G
l
a
s
s
e
s
:
T
e
c
hno
l
ogy
a
n
d
A
pp
l
i
c
a
t
i
ons
,
”
S
t
ud
e
nt
r
e
po
r
t
U
bi
qu
i
t
o
us
C
o
m
pu
t
i
n
g
S
e
m
i
n
a
r
F
S
2014
,
pp
.
1
-
5,
201
4.
[
2]
C
ol
a
c
o,
A
.
,
“
S
e
ns
o
r
D
e
s
i
gn
a
nd
I
nt
e
r
a
c
t
i
on
T
e
c
hni
que
s
f
or
G
e
s
t
u
r
a
l
I
np
ut
t
o
S
m
a
r
t
G
l
a
s
s
e
s
a
nd
M
ob
i
l
e
D
e
v
i
c
e
s
,
”
T
he
26
t
h
A
n
nua
l
A
C
M
Sy
m
po
s
i
um
on
U
s
e
r
I
nt
e
r
f
ac
e
So
f
t
w
a
r
e
a
n
d
T
e
c
h
nol
ogy
,
S
t
.
A
n
dr
e
w
s
m
U
ni
t
e
d
K
i
ng
do
m
,
pp.
49
-
52
,
O
c
t
obe
r
2013
.
[
3]
T
a
nve
r
r
M
.
I
.
,
H
o
que
M
.
E.
,
“
A
G
o
ogl
e
G
l
a
s
s
A
pp
t
o
H
e
l
p
t
he
B
l
i
nd
i
n
S
m
a
l
l
T
a
l
k
,
”
T
h
e
16
t
h
I
nt
e
r
n
at
i
on
al
A
C
M
SI
G
A
C
C
E
SS
C
on
f
e
r
e
n
c
e
on
C
om
p
ut
e
r
s
&
A
c
c
e
s
s
i
b
i
l
i
t
y
,
R
o
c
he
s
t
e
r
,
N
e
w
Y
or
k
,
U
S
A
,
pp
.
297
-
298
,
O
c
t
obe
r
201
4.
[
4]
K
a
r
t
hi
k
e
ya
n
M
.
,
V
i
j
a
y
a
ku
m
a
r
S
.
C.
,
“
E
m
be
d
de
d
S
y
s
t
e
m
U
s
i
ng
U
l
t
r
a
s
on
i
c
W
a
ve
a
n
d
V
o
i
c
e
B
i
o
m
e
t
r
i
c
t
o
B
u
i
l
d
a
n
E
-
G
l
a
s
s
f
or
t
he
B
l
i
nds
,
”
I
nt
e
r
n
at
i
on
al
J
o
ur
na
l
of
E
n
gi
n
e
e
r
i
n
g
R
e
s
e
a
r
c
h
&
T
e
c
h
no
l
ogy
(
I
J
E
R
T
)
,
vol
.
3
,
n
o.
1
,
pp.
50
0
-
5
04,
2
014
.
[
5]
H
a
s
a
n
E
.
A
.
,
T
o
ng
B
.
T.
,
“
S
m
a
r
t
G
l
a
s
s
e
s
f
o
r
t
h
e
V
i
s
u
a
l
l
y
I
m
p
a
i
r
e
d
P
e
opl
e
,
”
T
he
15
th
I
n
t
e
r
na
t
i
ona
l
C
onf
e
r
e
nc
e
o
n
C
om
put
e
r
H
e
l
pi
ng
P
e
op
l
e
w
i
t
h
S
pe
c
i
a
l
N
e
e
d
s
(
I
C
C
H
P
)
,
L
i
nz
,
A
us
t
r
i
a
,
pp
.
579
-
582
,
J
u
l
y
20
16
.
[
6]
B
a
i
,
J
.
,
L
i
a
n
,
S
.
,
L
i
u
,
Z
.
,
W
a
ng
,
K
.
,
L
i
u
,
D
.
,
“
S
m
a
r
t
G
u
i
d
i
ng
G
l
a
s
s
e
s
f
o
r
V
i
s
u
a
l
l
y
I
m
p
a
i
r
e
d
P
e
op
l
e
i
n
I
nd
oor
E
nvi
r
on
m
e
nt
,
"
i
n
I
E
E
E
T
r
an
s
ac
t
i
ons
on
C
on
s
um
e
r
E
l
e
c
t
r
on
i
c
s
,
vo
l
.
63
,
no
.
3
,
pp
.
258
-
266
,
A
ugu
s
t
20
17
.
[
7]
B
huni
ya
A
.
,
L
a
ha
S
.
,
M
a
i
t
y
D
K
.
,
S
a
r
k
a
r
A
.
,
B
ha
t
t
a
c
h
a
r
y
ya
S
.
,
“
S
m
a
r
t
G
l
a
s
s
f
o
r
B
l
i
nd
P
e
o
pl
e
,
”
A
M
SE
J
O
U
R
N
A
L
S
-
A
M
SE
I
I
E
T
A
,
vo
l
.
38
,
no
.
1,
pp
.
102
-
11
0
,
20
17
.
[
8]
M
oh
a
na
p
r
i
ya
R
.
,
N
i
r
m
a
l
a
U
.
,
P
r
i
s
c
i
l
l
a
C
.
P.
,
“
Sm
a
r
t
V
i
s
i
on
f
o
r
t
he
B
l
i
nd
P
e
op
l
e
,
”
I
n
t
e
r
nat
i
on
al
J
ou
r
na
l
o
f
A
dv
an
c
e
d
R
e
s
e
a
r
c
h
i
n
E
l
e
c
t
r
on
i
c
s
an
d
C
om
m
u
ni
c
at
i
o
n
E
n
gi
ne
e
r
i
ng
(
I
J
A
R
E
C
E
)
,
v
ol
.
5,
no
.
7,
pp
.
2014
-
20
17
,
J
ul
y
2
016
.
[
9]
B
hor
s
he
t
t
i
B
.
,
G
hug
e
S
.
,
K
ul
ka
r
ni
A
.
,
B
h
i
ng
a
r
ka
r
S
.
,
L
okh
a
nd
e
N
.
,
“
L
ow
B
udg
e
t
S
m
a
r
t
G
l
a
s
s
e
s
f
or
V
i
s
ua
l
l
y
I
m
pa
i
r
e
d
P
e
op
l
e
,
”
I
O
SR
J
ou
r
na
l
of
E
ng
i
n
e
e
r
i
ng
(
I
O
SR
J
E
N
)
,
pp
.
48
-
52
,
2019
.
[
10]
S
ya
f
a
r
u
ddi
n,
A
nda
ni
A
c
h
m
a
d,
T
a
j
udd
i
n
W
a
r
i
s
,
Z
u
l
k
i
f
l
i
T
a
h
i
r
,
Y
u
l
i
a
nt
o
D
w
i
P
ut
r
a
,
“
A
pp
l
i
c
a
t
i
o
n
o
f
M
i
c
r
o
c
on
t
r
ol
l
e
r
A
T
m
e
g
a
85
35
f
or
H
ybr
i
d
P
ho
t
ovo
l
t
a
i
c
–
T
he
r
m
a
l
(
P
V
/
T
)
,
”
I
n
t
e
r
na
t
i
ona
l
J
our
nal
o
f
E
ng
i
n
e
e
r
i
ng
and
T
e
c
hno
l
og
y
(
I
J
E
T
)
,
vol
.
5
,
n
o.
5
,
pp
.
4388
-
43
99
,
N
ov
e
m
be
r
2013
.
[
11]
A
dr
i
s
,
W
i
b
ow
o
E
.
P
.
T
.
,
S
u
m
a
r
i
A
.
D
.
W.
,
“
D
e
s
i
gn
a
n
d
I
m
pl
e
m
e
n
t
a
t
i
o
n
of
S
e
c
ur
i
t
y
S
ys
t
e
m
B
a
s
e
d
on
A
T
M
e
ga
8
535
M
i
c
r
o
c
on
t
r
ol
l
e
r
,”
T
h
e
1
st
M
a
k
as
s
ar
I
n
t
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14]
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17]
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22]
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