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m
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la
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1
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r
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s
e
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m
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m
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ld
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f
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te
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all
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is
k
s
m
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n
f
ac
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a
n
y
li
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av
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t
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.
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ed
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eg
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th
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te
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d
w
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it
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ap
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1
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q
u
a
k
e,
r
ain
f
a
ll
o
r
r
ap
id
s
n
o
w
m
elt
[
1
]
,
[
2
]
.
Sin
ce
5
0
y
e
ar
s
ag
o
,
th
e
s
p
ee
d
o
f
th
e
m
o
v
e
m
en
t
in
t
h
e
g
r
o
u
n
d
h
av
e
b
ee
n
ch
a
n
g
in
g
f
r
o
m
s
lo
w
e
s
t
to
v
er
y
s
lo
w
[
3
]
.
Fu
r
t
h
e
r
m
o
r
e,
ev
er
y
y
ea
r
,
lan
d
s
lid
es
h
a
s
a
f
f
ec
ted
m
an
y
co
u
n
tr
ies
o
v
er
th
e
w
o
r
ld
i
n
f
a
ct
h
as
e
n
d
an
g
er
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e
n
k
illed
m
an
y
h
u
m
a
n
li
f
e
a
n
d
d
estro
y
ed
th
e
en
v
ir
o
n
m
en
t.
T
h
e
co
m
p
le
x
i
n
ter
ac
tio
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o
f
m
an
y
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ac
to
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u
ch
as
l
ith
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g
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s
o
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p
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ties
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d
e
lev
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h
a
v
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m
ad
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lid
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o
cc
u
r
r
en
ce
i
s
h
ar
d
t
o
p
r
ed
ict
[
4
]
.
Fo
r
th
is
r
ea
s
o
n
,
th
e
d
ev
elo
p
m
e
n
t
o
f
la
n
d
s
l
id
e
s
e
n
s
o
r
h
as
b
ee
n
ev
o
lv
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n
g
e
v
er
y
d
a
y
i
n
o
r
d
er
to
p
r
o
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ce
th
e
m
o
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t
r
eliab
le
a
n
d
ef
f
ec
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s
y
s
te
m
i
n
d
etec
ti
n
g
lan
d
s
lid
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e
n
c
e
aler
t
th
e
p
eo
p
le
in
th
e
p
r
o
n
e
ar
ea
at
th
e
s
a
m
e
ti
m
e.
T
h
er
ef
o
r
e,
d
ata
tr
an
s
m
i
s
s
io
n
i
n
r
ea
l
-
ti
m
e
r
e
g
ar
d
in
g
t
h
e
s
tatu
s
o
f
s
tab
ilit
y
o
f
s
lo
p
e
i
n
t
h
e
p
r
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n
e
ar
ea
s
h
as
b
ec
o
m
e
a
m
aj
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r
co
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ce
r
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ed
in
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esear
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h
a
r
ea
in
t
h
e
h
o
p
e
t
h
at
an
ef
f
icie
n
t
lan
d
s
lid
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ea
r
l
y
w
ar
n
in
g
s
y
s
te
m
co
u
ld
b
e
d
ev
elo
p
ed
.
L
an
d
s
lid
e
m
o
n
ito
r
in
g
s
y
s
te
m
is
b
asicall
y
r
eq
u
ir
in
g
e
x
p
er
i
m
e
n
tal
s
t
u
d
ies
to
test
t
h
e
s
en
s
o
r
s
to
g
eth
er
with
th
e
d
ata
tr
a
n
s
m
is
s
io
n
f
r
o
m
th
e
s
e
n
s
o
r
n
o
d
e
to
th
e
b
ase
u
n
it
b
ef
o
r
e
d
ep
lo
y
th
o
s
e
s
en
s
o
r
s
in
th
e
p
r
o
n
e
ar
ea
.
Data
tr
an
s
m
i
s
s
io
n
is
th
e
c
o
m
m
u
n
icatio
n
f
r
o
m
s
en
s
o
r
n
o
d
e
to
b
ase
u
n
it.
I
t
l
ets
t
h
e
b
ase
u
n
it
to
k
n
o
w
w
h
en
t
h
er
e
ar
e
c
h
an
g
es
in
t
h
e
g
r
o
u
n
d
.
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w
ad
a
y
s
,
w
ir
e
le
s
s
s
e
n
s
o
r
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o
d
e
(
W
SN)
h
as
b
ee
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w
id
el
y
u
s
ed
b
ec
au
s
e
o
f
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p
ab
ilit
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to
tr
an
s
m
it
d
ata
in
r
ea
l
-
ti
m
e.
On
ce
a
d
ata
is
r
ec
eiv
ed
at
t
h
e
b
ase
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n
i
t
th
at
i
n
d
icate
s
th
er
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o
ten
tial
lan
d
s
lid
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ea
r
l
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w
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n
i
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s
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te
m
(
E
W
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p
lay
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a
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th
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liv
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E
W
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ca
n
b
e
d
ef
i
n
ed
as
to
in
s
tan
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s
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l
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at
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p
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ilit
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g
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[
5
]
.
T
h
is
alar
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m
p
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t b
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t to
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ap
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ated
,
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ase
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w
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d
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s
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to
it.
1
.
2
.
T
y
pe
o
f
Sens
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rs Use
d f
o
r
L
a
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li
de
M
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nito
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Sy
s
t
em
Dif
f
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h
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h
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t
t
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s
ca
lled
v
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o
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d
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t
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s
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o
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t
i
n
th
e
g
r
o
u
n
d
.
R
e
f
er
en
ce
[
6
]
,
[
7
]
p
r
o
p
o
s
e
to
p
lace
a
v
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r
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n
s
e
n
s
o
r
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SHO
C
K
-
8
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S
in
a
s
tai
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teel
p
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h
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p
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s
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r
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h
e
u
tili
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tio
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f
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b
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th
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lu
tio
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to
p
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th
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f
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n
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th
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s
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n
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O
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n
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,
ADX
L
2
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2
b
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ac
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ler
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e
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s
ed
to
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r
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b
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in
cli
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atio
n
an
g
l
e
an
d
ac
ce
ler
atio
n
o
f
g
r
o
u
n
d
m
o
v
e
m
e
n
t
[
2
]
.
Fig
u
r
e
1
s
h
o
ws
d
if
f
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en
t
t
y
p
e
s
o
f
s
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r
s
th
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ca
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lid
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E
q
u
all
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m
p
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t,
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eter
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d
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p
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m
e
n
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d
s
lo
p
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m
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m
en
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r
esp
ec
tiv
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A
b
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all,
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m
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m
e
n
t,
tilt
m
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is
th
e
b
es
t
ch
o
ice
[
1
]
,
[
6
]
.
On
t
h
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co
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tr
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,
la
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all
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[
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8
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T
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Fig
u
r
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1
.
Fro
m
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Sen
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(
SHO
C
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6
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A
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)
[
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o
f
r
a
i
n
f
a
l
l
.
G
e
o
p
h
o
n
e
T
o
me
a
su
r
e
v
i
b
r
a
t
i
o
n
.
2.
RE
S
E
ARCH
M
E
T
H
O
D
T
h
e
ty
p
e
o
f
s
en
s
o
r
u
s
ed
to
d
etec
t
g
r
o
u
n
d
m
o
v
e
m
e
n
t
is
v
ib
r
atio
n
s
en
s
o
r
,
SW
-
4
2
0
an
d
it
is
w
el
l
k
n
o
w
n
a
s
h
i
g
h
l
y
s
e
n
s
iti
v
e
s
en
s
o
r
.
W
h
en
th
er
e
is
n
o
v
ib
r
atio
n
,
th
e
o
u
tp
u
t
s
ig
n
al
is
lo
w
an
d
th
e
L
E
D
w
ill
n
o
t
tu
r
n
o
n
.
W
h
er
ea
s
,
w
h
e
n
t
h
er
e
is
v
ib
r
atio
n
t
h
e
o
u
tp
u
t
s
i
g
n
al
is
h
ig
h
a
n
d
th
e
L
E
D
w
ill
tu
r
n
o
n
.
As
s
h
o
w
n
i
n
Fig
u
r
e
2
,
t
h
e
v
ib
r
atio
n
m
o
d
u
l
e
co
n
s
i
s
ts
o
f
t
h
e
s
e
n
s
o
r
its
el
f
,
an
L
M
3
9
3
ch
ip
a
n
d
a
p
o
ten
tio
m
eter
.
L
M
3
9
3
ch
ip
is
a
co
m
p
ar
ato
r
an
d
it
is
u
s
ed
to
d
etec
t
v
ib
r
atio
n
i
f
it
is
ex
ce
ed
ed
th
e
t
h
r
es
h
o
ld
.
T
h
is
th
r
e
s
h
o
ld
ca
n
b
e
ad
j
u
s
ted
b
y
th
e
p
o
te
n
tio
m
eter
.
T
u
r
n
in
g
t
h
e
p
o
ten
tio
m
eter
i
n
clo
ck
w
is
e
d
ir
ec
tio
n
w
il
l
d
ec
r
ea
s
e
th
e
s
e
n
s
it
iv
it
y
w
h
ile
a
n
ticlo
ck
w
i
s
e
d
ir
ec
tio
n
w
il
l
in
cr
ea
s
e
t
h
e
s
e
n
s
it
iv
it
y
.
O
f
f
-
t
h
e
-
s
h
el
f
P
VC
p
ip
e
w
as
s
el
ec
ted
as
th
e
ca
s
in
g
o
f
th
e
s
en
s
o
r
an
d
s
e
v
er
a
l
ex
p
er
im
e
n
t
s
w
er
e
co
n
d
u
cted
to
d
eter
m
in
e
t
h
e
o
p
ti
m
u
m
d
i
m
en
s
io
n
s
i
n
ter
m
s
o
f
len
g
th
a
n
d
d
iam
e
ter
in
p
r
o
d
u
cin
g
t
h
e
h
i
g
h
e
s
t
v
ib
r
atio
n
i
n
ten
s
it
y
.
T
h
e
d
im
e
n
s
io
n
s
ch
o
s
e
to
b
e
test
ed
ar
e
d
ia
m
eter
o
f
1
5
m
m
,
3
2
m
m
,
5
0
m
m
a
n
d
8
0
m
m
f
o
r
ea
ch
o
f
1
m
,
2
m
a
n
d
3
m
le
n
g
th
.
Ot
h
er
th
a
n
th
a
t,
o
th
er
ad
v
an
ta
g
e
o
f
u
s
in
g
t
h
i
s
p
ip
e
is
,
it
ca
n
p
r
o
tect
th
e
s
en
s
o
r
d
u
r
in
g
t
h
e
lan
d
s
lid
e
s
o
t
h
at
i
t
ca
n
co
n
t
in
u
o
u
s
l
y
f
u
n
ctio
n
d
u
r
in
g
t
h
e
lan
d
s
lid
e
p
h
en
o
m
en
o
n
.
2
.
1
.
Co
m
po
nents
a)
Vib
r
atio
n
m
o
d
u
le
s
e
n
s
o
r
(
SW
-
4
2
0
)
,
b)
L
E
D,
c)
A
r
d
u
i
n
o
UNO
b
o
ar
d
d)
J
u
m
p
er
w
ir
e
e)
Gr
av
el
f)
L
ap
to
p
g)
Sh
a
k
er
m
ac
h
i
n
e
h)
P
VC
p
ip
es:
T
ab
le
2
.
Dim
e
n
s
io
n
s
o
f
p
ip
e
L
e
n
g
t
h
(
m)
D
i
a
me
t
e
r
(
mm
)
1
15
32
50
80
2
15
32
50
80
3
15
32
50
80
Fig
u
r
e
2
.
Vib
r
atio
n
s
en
s
o
r
m
o
d
u
le
SW
-
420
Evaluation Warning : The document was created with Spire.PDF for Python.
I
n
d
o
n
esia
n
J
E
lec
E
n
g
&
C
o
m
p
Sci
I
SS
N:
2502
-
4752
Lo
w
C
o
s
t V
ib
r
a
tio
n
C
h
a
mb
er fo
r
La
n
d
s
lid
e
S
en
s
o
r
y
a
n
d
A
la
r
m
S
ystem
(
E
liz
a
S
a
b
ir
a
B
in
ti I
s
ma
il)
113
Fig
u
r
e
3
.
C
o
m
p
o
n
e
n
ts
u
s
ed
in
th
e
ex
p
er
i
m
en
t (
SW
-
420,
j
u
m
p
er
,
L
E
D,
A
r
d
u
i
n
o
Un
o
b
o
ar
d
Fig
u
r
e
4
.
Sh
ak
er
m
ac
h
in
e
2
.
2
.
E
x
peri
m
e
nts
T
h
e
p
r
o
g
r
am
m
i
n
g
co
d
e
to
en
a
b
le
th
e
lap
to
p
r
ea
d
th
e
m
ea
s
u
r
e
m
en
t
f
r
o
m
t
h
e
s
e
n
s
o
r
is
co
m
p
iled
an
d
u
p
lo
ad
ed
b
y
u
s
in
g
A
r
d
u
in
o
I
n
teg
r
ated
De
v
elo
p
m
e
n
t
E
n
v
i
r
o
n
m
e
n
t
(
I
DE
)
s
o
f
t
w
ar
e.
Ser
ial
m
o
n
ito
r
o
n
th
e
A
r
d
u
i
n
o
s
o
f
t
w
ar
e
w
a
s
u
s
ed
to
o
b
tain
ed
th
e
m
ea
s
u
r
e
m
e
n
ts
o
f
t
h
e
s
e
n
s
o
r
an
d
th
e
m
ea
s
u
r
e
m
en
ts
w
er
e
r
ec
o
r
d
ed
f
o
r
ten
s
ec
o
n
d
s
.
T
h
e
ex
p
er
im
en
ts
co
n
d
u
cted
ca
n
b
e
class
if
i
ed
in
to
f
o
u
r
ca
teg
o
r
ies
.
2
.
2
.
1
.
E
x
perie
m
nt
1
:
T
o
T
est
t
he
F
un
ct
io
na
lity
o
f
t
he
Sens
o
r
A
g
o
o
d
v
ib
r
atio
n
s
en
s
o
r
is
n
o
t
s
u
p
p
o
s
ed
to
r
ec
o
r
d
an
y
m
ea
s
u
r
e
m
e
n
t
w
h
e
n
t
h
er
e
is
n
o
m
o
ti
o
n
ap
p
lied
to
th
e
p
ip
e.
T
h
is
i
s
i
m
p
o
r
tan
t
to
av
o
id
th
e
p
eo
p
le
r
ec
eiv
e
f
a
ls
e
alar
m
.
T
h
e
s
e
n
s
o
r
w
as
p
la
ce
d
in
a
p
ip
e
o
f
2
m
len
g
th
a
n
d
1
5
m
m
d
ia
m
eter
an
d
w
as le
f
t
w
it
h
n
o
m
o
tio
n
ap
p
lied
to
it f
o
r
a
tim
e.
2
.
2
.
2
.
E
x
peri
m
e
nt
2
:
T
o
I
ncre
a
s
e
t
he
Sens
it
iv
it
y
o
f
t
he
Sens
o
r
E
v
en
th
o
u
g
h
t
h
e
p
o
te
n
tio
m
ete
r
o
n
th
e
b
o
ar
d
ca
n
b
e
ad
j
u
s
te
d
to
in
cr
ea
s
e
t
h
e
s
en
s
iti
v
it
y
,
b
u
t
it
is
n
o
t
en
o
u
g
h
to
d
etec
t
th
e
s
li
g
h
te
s
t
f
ai
n
t
tr
e
m
o
r
.
T
o
in
cr
ea
s
e
th
e
s
en
s
it
iv
i
t
y
,
1
0
p
iece
s
o
f
g
r
av
els
w
er
e
p
lace
d
in
s
id
e
th
e
p
ip
e
to
i
n
d
u
ce
s
tr
o
n
g
er
ac
o
u
s
tic
v
ib
r
atio
n
.
W
h
e
n
t
h
e
p
ip
e
is
m
o
v
in
g
,
t
h
ese
g
r
av
el
s
ar
e
m
o
v
i
n
g
as
w
ell
an
d
h
it t
h
e
in
n
er
w
all
o
f
t
h
e
p
ip
e
h
en
ce
p
r
o
d
u
ce
m
o
r
e
v
ib
r
atio
n
i
n
s
id
e
t
h
e
p
ip
e
.
2
.
2
.
3
.
E
x
peri
m
e
nt
3
:
T
o
F
in
d
t
he
O
pti
m
u
m
Di
m
ens
io
n
a
nd
P
o
s
it
io
n
o
f
P
ipe
in
P
ro
d
uci
ng
H
ig
hes
t
Aco
us
t
ic
I
nte
n
s
it
y
T
h
is
ex
p
er
i
m
e
n
t
w
as
co
n
d
u
ct
ed
to
d
eter
m
i
n
e
w
h
ic
h
le
n
g
th
an
d
d
ia
m
eter
ca
n
p
r
o
d
u
ce
t
h
e
h
i
g
h
e
s
t
ac
o
u
s
tic
i
n
ten
s
it
y
w
h
e
n
t
h
e
g
r
av
els
h
it
t
h
e
in
n
er
w
a
ll
o
f
th
e
p
ip
e.
A
ll
th
e
1
2
p
ip
es
w
er
e
s
h
ak
e
m
a
n
u
al
l
y
a
n
d
s
y
s
te
m
a
ticall
y
to
s
i
m
u
la
te
th
e
g
r
o
u
n
d
m
o
v
e
m
e
n
t.
Evaluation Warning : The document was created with Spire.PDF for Python.
I
SS
N
:
2
5
0
2
-
4752
I
n
d
o
n
esia
n
J
E
lec
E
n
g
&
C
o
m
p
Sci,
Vo
l.
10
,
No
.
1
,
A
p
r
il 2
0
1
8
:
1
1
0
–
1
1
9
114
2
.
2
.
3
.
1
.
Ra
nd
o
m
Sh
a
k
i
ng
T
h
is
ex
p
er
i
m
e
n
t
w
as
p
er
f
o
r
m
ed
w
it
h
t
w
o
d
i
f
f
er
en
t
p
o
s
itio
n
o
f
p
ip
e
a
n
d
t
w
o
d
if
f
er
e
n
t
d
ir
ec
tio
n
o
f
s
h
a
k
i
n
g
.
T
h
e
v
ib
r
atio
n
w
as
i
n
d
u
ce
d
v
er
ticall
y
an
d
h
o
r
izo
n
t
all
y
b
y
s
h
a
k
i
n
g
th
e
p
ip
e
r
an
d
o
m
l
y
b
ac
k
/
f
o
r
th
an
d
u
p
/d
o
w
n
m
o
tio
n
s
f
o
r
ten
s
ec
o
n
d
s
.
T
h
e
p
o
s
itio
n
s
o
f
p
ip
e
an
d
d
ir
ec
tio
n
s
o
f
s
h
a
k
i
n
g
ca
n
b
e
illu
s
tr
ated
in
th
e
tab
le
b
elo
w
also
i
n
Fi
g
u
r
e
4
a
n
d
Fi
g
u
r
e
5
.
F
u
r
th
er
m
o
r
e,
t
h
es
e
1
2
p
ip
es
w
er
e
te
s
ted
w
it
h
b
o
th
g
r
av
e
l i
n
s
id
e
th
e
p
ip
e
an
d
w
it
h
o
u
t
g
r
av
el
i
n
s
id
e
th
e
p
ip
e.
T
ab
le
3
.
P
o
s
itio
n
s
o
f
P
ip
e
an
d
Dir
ec
tio
n
o
f
S
h
ak
in
g
P
er
f
o
r
m
ed
Du
r
in
g
Ma
n
u
all
y
S
h
ak
in
g
P
o
si
t
i
o
n
o
f
p
i
p
e
D
i
r
e
c
t
i
o
n
o
f
sh
a
k
i
n
g
G
r
a
v
e
l
H
o
r
i
z
o
n
t
a
l
B
a
c
k
a
n
d
f
o
r
t
h
No
Y
e
s
U
p
a
n
d
d
o
w
n
No
Y
e
s
V
e
r
t
i
c
a
l
B
a
c
k
a
n
d
f
o
r
t
h
No
Y
e
s
U
p
a
n
d
d
o
w
n
No
Y
e
s
Fig
u
r
e
5
.
T
h
e
ex
p
er
im
e
n
t set
-
u
p
w
h
e
n
th
e
p
ip
e
is
laid
h
o
r
iz
o
n
tall
y
Fig
u
r
e
6
.
T
h
e
ex
p
er
im
e
n
t set
-
u
p
w
h
e
n
th
e
p
ip
e
is
h
eld
v
er
tic
all
y
2
.
2
.
3
.
2
.
Sy
s
t
e
m
a
t
ic
S
ha
k
ing
Sh
a
k
er
m
ac
h
i
n
e
i
n
lab
w
as
u
s
ed
to
e
m
u
late
ea
r
t
h
q
u
a
k
e
a
n
d
s
tr
o
n
g
lan
d
l
s
id
e
.
T
h
e
p
ip
e
w
a
s
tap
ed
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Evaluation Warning : The document was created with Spire.PDF for Python.
I
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f
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h
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.
[7
]
Q.
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.
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t
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]
Qia
o
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.
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:
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ro
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[9
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El
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.
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.
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ls
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”
2
0
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7
IEE
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In
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Co
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c
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ma
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