TELKOM
NIKA Indonesia
n
Journal of
Electrical En
gineering
Vol.12, No.1, Jan
uary 20
14
, pp. 371 ~ 3
7
8
DOI: http://dx.doi.org/10.11591/telkomni
ka.v12i1.4140
371
Re
cei
v
ed
Jun
e
25, 2013; Revi
sed Aug
u
st
25, 2013; Accepted Sept
em
ber 19, 20
13
Design of a Subsequent Water Detection System
Controlled by the Microcontroller
Chu Yan*, T
a
ng Ka
ng, Feng Xiaoming, Cai Xin
y
u
a
n, Chen Pe
ngju
T
he Institute of Electronic a
n
d
Control En
gin
eeri
ng Ch
an
g’a
n
Univ
ersit
y
,
Xi
’an, Ch
ina
*Corres
p
o
ndi
n
g
author, e-ma
i
l
:
y
a
nchu
@chd
.edu.cn, hp
blu
e
s@vip.
qq.co
m
A
b
st
r
a
ct
This article inst
ructs the subse
quent water detection
system
design and implem
entation
of sanitary
w
a
re. T
h
is system use
d
C8
051f0
40 Micro
c
ontrol
l
er
as the main co
ntrol modu
le a
n
d
communic
a
ti
o
n
mo
du
le w
h
ic
h
control
l
ed
t
he
oper
ation
of th
e entir
e syste
m
，
touch
scre
en as
a
positi
on
mac
h
i
n
e
，
and
ma
de
use
of
meta
l
prob
in
g
techni
qu
e a
n
d
w
e
igh
i
ng
se
n
s
or tech
nol
ogy
to re
ali
z
e
dat
a test, col
l
ecti
on
,
displ
a
y, storag
e an
d exp
o
rt. At last
，
the experim
ental r
e
s
u
lts showed that
this system
m
e
ets the ex
pect
ed
requ
ire
m
e
n
t an
d can
meas
ure
the subse
que
nt w
a
ter more
accurate
ly.
Ke
y
w
ords
: Au
tomatic c
ontrol
,
Subseq
uent
w
a
ter, Meta
l probi
ng tech
niq
ue, T
ouch scr
een, C8
05
1f04
0
Microcontr
o
ll
er
Copy
right
©
2014 In
stitu
t
e o
f
Ad
van
ced
En
g
i
n
eerin
g and
Scien
ce. All
rig
h
t
s reser
ve
d
.
1. Introduc
tion
As pe
ople’
s li
ving stan
da
rd
improve
d
, sa
nitary ware
is take
n serio
u
sly, and th
e q
uality of
the produ
cts is g
e
tting m
o
re
and
more peo
ple’
s at
tention. As
a
n
impo
rtant
cla
s
s of sani
tary
quality indi
ca
tors,
rin
s
e f
unctio
n
resp
onse it
s flu
s
hing
cap
a
cit
y
and effe
ctiveness di
re
ctly.
Therefore, it has be
com
e
very
important to detect the subseq
uent wate
r a
c
curately in the
pro
c
e
ss
of the manufa
c
ture and d
o
ing rese
arch o
n
sanitary cera
m
i
cs [1]. He
re,
the sub
s
e
que
nt
water refers t
o
the
wate
r f
o
llowed afte
r
whe
n
the
sim
u
lation o
b
je
cts p
a
ss th
rou
gh the
outlet
of
the toilet. It keep
s the sewage pip
e
line
achi
eving se
lf-cle
anin
g
by flushi
ng the
si
mulation o
b
je
cts
into the stan
dpipe via the
socket pip
e
and t
he conn
ecting pi
pe, and u
s
ing th
e displa
ce
me
nt
water to
seal
water at the
same time wit
hout the make-up
wate
r.
In orde
r to d
e
tect whethe
r the sa
nitary
ware
is i
n
a
c
cordan
ce
wit
h
indu
strial
st
anda
rds
(refe
r to E
N
9
77-2
012
) m
o
re a
ccu
rately,
more
pr
acti
ca
lly and mo
re
simply, this p
aper devel
op
ed
an sub
s
equ
e
n
t water
det
ection
syste
m
usin
g on
sanita
ry ware, which took th
e con
t
rol
techn
o
logy b
a
se
d on
C8
051F0
40 mi
crocontroller
a
s
the
co
re,
and b
a
sed o
n
an inte
grat
ed
measurement
includin
g
me
tal detection tech
nolo
g
y,
sensor technol
ogy. It’s an effective syste
m
on dete
c
ting
yield of the subsequ
ent water [2].
2. The Basic
Idea of Sy
stem Design
If we put four simulatio
n
o
b
ject
s in the
toilet, the system sho
u
ld b
e
able to a
ccurately
detect wheth
e
r the obj
ect
s
are wa
sh
e
d
away o
r
n
o
t, and se
nd
a sign
al to the main con
t
rol
system
wh
en
flushin
g
the
toilet. When t
he obj
ect
s
a
r
e wa
sh
ed a
w
ay totally, the system
sh
ou
ld
be ca
pabl
e of colle
cting th
e finalvalue o
f
the sub
s
e
q
u
ent wate
r, an
d displ
a
y it on the termin
al
. In
con
s
id
eratio
n
of the
s
e
re
q
u
irem
ents, th
e overall fr
a
m
ewo
r
k of th
e de
sig
n
in
th
is p
ape
r i
s
sh
own
in Figure 1.
The si
mulatio
n
obje
c
ts d
e
tection m
odul
e is mai
n
ly co
mposed of ferroma
gneti
c
coils, an
d
it sampl
e
s th
e mag
netic fi
eld chan
ge
s
whe
n
the
si
mulation
obje
c
ts
(withi
n a
metal rin
g
)
p
a
ss
throug
h the
coil. Th
e
wei
ghing
mod
u
l
e
is mainly f
o
rme
d
by
a
weig
hing
se
n
s
or,
whi
c
h
can
accurately de
tect the cha
n
ges of water
yield [3]. The master
cont
rol module ta
king C8
051F
0
4
0
as the core,
is use
d
for signal a
nd
data pro
c
e
ssing. The co
mmuni
cation
module an
d
the
intera
ctive in
terface, m
a
in
ly to complet
e
t
he data p
r
ocessin
g
an
d display, are made
up
of
C80
51F0
40
and a touch scree
n
. As shown in Figu
re 2, whe
n
the system det
ects a
simula
tion
obje
c
t, the co
unter pl
us
1, and it can b
e
judge
d
a
s
th
e last
simulat
i
on washed a
w
ay when th
e
cou
n
ter is 4.
At this time, t
he
weig
hing
module
read
s the
wate
r lev
e
l, and
dete
r
mines wheth
e
r it
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ISSN: 2302
-4046
TELKOM
NIKA
Vol. 12, No
. 1, Janua
ry 2014: 371 – 3
7
8
372
is stabl
e. If stability, then
it read
s the sub
s
e
que
nt water valu
e
and di
splay the re
sult on
the
terminal.
Figure 1. The
overall frame
w
ork of the system
Figure 2. System Dete
ct Proce
ss
3. Sy
stem Modules Desi
gn
3.1. The Desi
gn of Simulation Objec
t
s
Detec
t
ion M
odule
3.1.1 The Ch
oice of Simulation Objec
t
s
Based
on
th
e 6 lite
r
s of
water toilet
system evalu
a
t
ion metho
d
s in a
c
cordan
ce
with
DIN
stand
ard,
we
sele
ct a sta
ndard te
st
sp
ecime
n
a
s
the stimula
n
t-A
r
tificial casi
ng
s (T
ubula
r)
with
metal Inducti
ve loop, filled with water a
nd cove
red
with bate. Then tie it into
three sectio
ns
with
a length
of 1
60mm a
nd a
diamete
r
of 2
5
mm. Each test u
s
e
s
4 te
st sp
eci
m
en
s to simul
a
te shit
excrete
d
by a
person
ea
ch
time. This
sp
ecime
n
with
a
good
simul
a
tion feature no
t only can truly
Evaluation Warning : The document was created with Spire.PDF for Python.
TELKOM
NIKA
ISSN:
2302-4
046
De
sign of a Subsequ
ent Water Dete
ctio
n System
Co
ntrolled b
y
th
e Microcontro
ller (Chu Yan
)
373
evaluate the
flushing
sm
oothne
ss of a toilet
su
pportin
g
sy
stems, but al
so can
be u
s
ed
repe
atedly [4].
The
si
ze
and
sh
ape
of
a
stand
ard
spe
c
imen
a
r
e
sh
own
in
Figu
re 3.Th
e n
u
m
ber 1-10
each in turn repre
s
e
n
ts 3
7
ml wate
r, artificial
ca
sing
s, the tied ho
rizontal
plan
e, linen thread, t
h
e
hori
z
ontal pl
a
ne witho
u
t tied, "O"-ring
s, metal
ring
s (b
lows), "O"-rin
g
s, and the li
nen thre
ad.
Figure 3. Standard sp
eci
m
en si
ze an
d shape
3.1.2. Dete
cti
on Coil Wou
nd
Simulation o
b
ject
s dete
c
tion mod
u
le
mainly co
nsi
s
ts of ferro
m
agneti
c
coi
l
s whi
c
h
inclu
de
an
excitation
coil
a
nd two d
e
tect
ion
coil
s. Wh
en the
mimeti
c p
a
sse
s
th
ro
ugh th
e inte
ri
or
of coil with flush
water, th
e metal ring
in the
mimetic ca
uses
slig
ht magnetic f
i
eld variation
s
.
Then with a sign
al
am
plifier,
the mime
tic
dete
c
tion
module
can captu
r
e
th
e sign
al
reflecti
ng
cha
nge
s in the magn
etic field [5]. Geometry of t
he
coil is sho
w
n
in Figure 4. In this sectio
nal
view, the gra
y
part is the wou
nd, and t
he white p
a
rt is a hollo
w cy
linder.
Figure 4.Geo
m
etry of the coil
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ISSN: 2302
-4046
TELKOM
NIKA
Vol. 12, No
. 1, Janua
ry 2014: 371 – 3
7
8
374
The se
nsi
ng
coil in Figu
re
4 is made of
enamel
ed c
o
pper
s with a
diamete
r
of 0.5 mm.It
is Singl
e laye
r
winde
d o
n
a cylin
dri
c
al
Plexiglas,
with 50
turns of
excitation
co
il, and
26 tu
rns
each of two
detection
coils. In these pro
c
e
s
se
s, the key is
to ensu
r
e th
e uniformity
and
s
y
mmetry relative
to
the exc
i
tation c
o
il
of
t
he two
detectio
n
coil
s a
s
fa
r a
s
possibl
e[6].The
detectin
g
circuit diagra
m
is sho
w
n in Fig
u
re 5.
Figure 5. Det
e
cting
circuit diagram
3.2. The Des
i
gn of Weigh
i
ng Module
The
sub
s
eq
u
ent wate
r i
s
measured by
weig
hing
se
nso
r
, whi
c
h
converts the p
r
essu
re
sign
al gen
era
t
ed by the su
bse
que
nt wat
e
r into
a volta
ge sig
nal. Th
en by amplifi
c
ation a
nd A
D
C
pro
c
e
ssi
ng, t
he value
of f
o
llow-up
water
can
be
re
ad o
u
t. To
meet the
de
sign
pe
rform
ance
requi
rem
ents,
accu
ra
cy of
the sen
s
o
r
plays a
de
ci
sive role,
so
this d
e
si
gn
sele
cts the h
i
gh-
pre
c
isi
on stra
in gauge
sen
s
or [7]. The sensor wor
ks
as follows: it take
s a full-bridge equ
al arm
bridg
e
a
s
th
e
ba
sic ci
rcuit, with th
e
sen
s
itive
compo
nents (a
resi
stive foil
strai
n
ga
uge
) a
s
the
bridg
e
a
r
m which i
s
stuck
on the metal
cantileve
r
ela
s
tic surfa
c
e. Whe
n
an external
fo
rce
pl
ays
on the elasti
c body , chip resi
stor subje
c
ted to
tensil
e or com
p
re
ssive strai
n
, and its re
sista
n
ce
cha
nge
s,
wh
ich
re
sults i
n
an
out-of-balan
ce
on
the bri
dge,
gene
rating
a
co
rrespon
di
ng
differential si
gnal amplification circuit
for
su
bseq
uent
m
easurement and
pro
c
e
ssi
ng
[
8
].
Weig
hing mo
dule ci
rcuit diagra
m
sh
own
in Figure 6.
R1
51
K
R2
1K
R3
10
K
R4
2K
C1
1
10
n
C1
2
10
n
C1
3
10
00p
C1
4
47
0p
接端
子
线
Q1
Q2
N2
2
2
2
L1
10
0uH
C1
5
12
0p
R6
10
K
R7
10
K
R8
10
K
D1
41
48
D2
41
4
8
--
2
+
3
V+
4
V-
5
OU
T
6
U1
LM
3
1
8
RV
1
10
K
RV
2
1K
R9
1K
R5
1
功率
放大
路
电
+1
5
V
功率
放大
路
电
正弦
生
路
发电
-1
5
V
比路
电压
较电
波路
滤电
Q2
2S
C
5
200
二放
大路
级电
一放
大路
级电
跟随
路
电压
电
峰波
路
值检
电
+1
5
V
去耦
容
电
C1
6
10
0pf
XQ
I
N
--
2
+
3
V+
7
V-
4
OU
T
6
U2
OP
0
7
+1
5
V
-1
5
V
C1
0
0.
1u
f
XQ
OU
T
C9
0.
1
u
f
D3
IN
6
0
C8
0.
1u
f
C7
0.
1u
f
C6
0.
1u
f
C1
7
0.
01
u
f
GN
D
-
15V
+1
5
V
--
2
+
3
V+
7
V-
4
OU
T
6
U3
OP
0
7
+1
5
V
-1
5
V
C1
8
10
uf
C5
0.
1u
f
R1
1
10
k
C4
0.
1
u
f
C3
0.
1u
f
C2
0.
1u
f
C1
0.
1u
f
--
2
+
3
V+
7
V-
4
1
8
OU
T
6
NC
5
U4
A
D
6
20A
N
1
2
3
JP
1
DY
DZ
1
2
3
4
5
JP
2
XH
DZ
GN
D
R1
0
10
k
JC
X
H
KG
X
H
XQ
O
U
T
R1
2
10
k
XQ
I
N
+1
5
V
-
15V
GN
D
-1
5
V
+1
5
V
--
2
+
3
V+
8
V-
4
OU
T
1
U5
T
L
082
R1
3
1k
JC
X
H
R1
4
62
k
+1
5
V
KG
X
H
-1
5
V
+1
5
V
R1
8
15
k
C1
9
0.
1u
f
R1
5
33
0k
R1
6
33
0k
RV
3
10
k
C2
0
0.
1u
f
C2
1
15
00p
f
R1
7
4.
02
k
--
2
+
3
V+
8
V-
4
OU
T
1
U6
TL
0
8
2
--
4
+
5
V+
3
V-
12
O
2
U7
LM
3
3
9
C2
2
4.
7u
f
-1
5
V
+1
5
V
Evaluation Warning : The document was created with Spire.PDF for Python.
TELKOM
NIKA
ISSN:
2302-4
046
De
sign of a Subsequ
ent Water Dete
ctio
n System
Co
ntrolled b
y
th
e Microcontro
ller (Chu Yan
)
375
Figure 6. Wei
ghing mo
dule
circuit diag
ra
m
3.3. The Main Control Module and Communicati
on Module
The fu
nction
of the m
a
in
control
mod
u
le
is to
receive
and
p
r
ocess sig
nal
s
comi
ng from
simulatio
n
o
b
ject
s d
e
tection mod
u
le
, weig
hing
se
nsors a
nd p
o
sition
machine.
Th
e
comm
uni
cati
on mod
u
le i
s
u
s
ed to
conne
ct the h
u
man
-
ma
chin
e interfa
c
e
with main
co
ntrol
module. And
the two modu
les u
s
e the C8051F
040 mi
cro
c
o
n
troll
e
r
as the core d
e
vice [9].
The
C8
051f0
40 i
s
a
fully i
n
tegrate
d
mi
xed-si
gnal
System-on-Chi
p
MCU,
with 6
4
digital
I/O pins
and
an integ
r
ated
CAN2.0B co
ntrolle
r. Its a
d
vantage
s a
r
e listed
a
s
fo
llows:
①
with
a
high-sp
eed
8051 mi
crocontrolle
r core and pi
peli
ned
a
r
chitect
u
re, mo
st of the instruct
ion
executio
n time is one o
r
two sy
stem cl
ock cycl
es.
②
With 4K in
ternal RAM a
nd 64K FLAS
H, it
can m
eet the requi
rem
e
nts for mem
o
ry sp
ace
s
i
n
most de
si
gns
without
external me
mory
device
s
,
a
nd thus simplify system
de
sig
n
.
③
config
ure a va
riety of
port
s
,
su
ch
as SPI, SM B
u
s
and UART.
④
su
ppo
rting
MODB
US protocol, you
can
be ea
sily
con
n
e
c
ted wi
th
touch scre
en
[10].
C80
51f04
0 can b
e
code
d
by assem
b
ly
l
angu
age
and
C l
angu
age,
the
system i
s
cod
e
d
by the C lang
uage, pa
rt of the cod
e
is a
s
follows:
if(x[7]==0x01
)
// Single detection i
s
com
p
leted
{
x
[
7
]
=
0
x
0
0
;
ADC0
C
N
=
0
x
00;
water_la
st1=(x[17]*256+x[
16]);
if(wate
r
_la
s
t1
<water_l
ast0
)
{
water_la
st1=0;
}
else
{
water
_
la
st1=
water
_
la
st1-
water
_
la
st0;
}
temp1=wate
r_last1*
2.74;
water_la
st1=t
e
mp1/1;
w
a
t
e
r
_
l
a
s
t
1
=
w
a
t
e
r
_
l
a
s
t
1
;
--
2
+
3
V+
7
V-
4
1
8
OU
T
6
NC
5
U1
A
D
6
20A
N
R1
10
k
+1
5
V
-
15V
--
2
+
3
V+
8
V-
4
OU
T
1
U2
T
L
082
R2
1k
R3
50
k
-1
5
V
+1
5
V
+1
5
V
+1
5
V
--
2
+
3
V+
7
V-
4
1
8
OU
T
6
NC
5
U3
A
D
6
20A
N
R4
10
k
+1
5
V
-
15V
--
2
+
3
V+
8
V-
4
OU
T
1
U4
T
L
082
R5
1k
R6
50
k
-1
5
V
+1
5
V
+1
5
V
+1
5
V
--
2
+
3
V+
7
V-
4
1
8
OU
T
6
NC
5
U5
AD
6
2
0
A
N
R7
10
k
+1
5
V
-1
5
V
--
2
+
3
V+
8
V-
4
OU
T
1
U6
TL
0
8
2
R8
1k
R9
50
k
-
15V
+1
5
V
--
2
+
3
V+
7
V-
4
OU
T
6
U7
OP
0
7
R1
0
10
k
R1
1
10
k
R1
2
10
k
R1
4
10
k
R1
3
10
k
+1
5
V
-1
5
V
CZ
X
H
1
-
CZ
X
H
1
-
CZ
X
H
3
-
CZ
X
H
3
+
CZ
X
H
1
+
CZ
X
H
2
+
CZ
X
H
2
+
CZ
X
H
1
+
CZ
X
H
3
+
CZ
X
H
3
-
CZ
X
H
2
-
CZ
X
H
1
-
C
Z
XH
OUT
+1
5
V
-1
5
V
GN
D
1
2
3
4
5
6
7
8
J2
JX
D
Z
GN
D
一放
大
级
一放
大
级
一放
大
级
二放
大
级
二放
大
级
二放
大
级
加法运算放大
C
Z
XH
OU
T
1
2
3
4
5
6
J1
CO
N
6
GN
D
+1
5
V
Evaluation Warning : The document was created with Spire.PDF for Python.
ISSN: 2302
-4046
TELKOM
NIKA
Vol. 12, No
. 1, Janua
ry 2014: 371 – 3
7
8
376
x[14]=wate
r
_l
ast1;
x[15]=wate
r
_l
ast1
>>8;
x[2]=0x00;
x[19]=0x01;
x
[
5
]
+
+
;
water_ave
=
(water_ave*
(x[5
]-1)+water_l
ast1)/x[5];
x[12]=wate
r
_
a
ve;
x[13]=wate
r
_
a
ve>>8;
E
X
0
=
0
;
if(x[5]=
=
1
)
{
water_ave1
=water_ave;
}
else
{
water_ave0
=water_ave1;
water_ave1
=water_ave;
}
c
=
1
;
}
3.4. Interactiv
e
Interface
Different
with
a previo
us P
C
a
s
the p
o
si
tion machine,
this sy
stem
adopt
s a n
e
w type of
touch
scre
en
as the po
siti
on ma
chine .
T
he sy
st
em can ma
ke the
equipm
ent m
o
re flexible a
n
d
redu
ce
the i
n
vestment, b
u
t also the
op
eration i
s
simpl
e
r a
nd
more
conve
n
ient. T
he tou
c
h
scre
en
use
s
Delta’s
DOP---B
07S
411, and it is
con
n
e
c
ted
wit
h
the micro
c
o
n
trolle
r thro
u
gh the MO
DB
US
proto
c
ol
[11]. The
tou
c
h
scre
en
is u
s
ed
for th
e o
p
e
r
a
t
ion of the
e
n
t
ire
system,
d
a
ta di
splay
a
n
d
data
stora
ge,
at the
sam
e
time, it ca
n
export
the
d
a
ta thro
ugh
the
U di
sk.
T
he inte
rface
as
sho
w
n in Fig
u
re 7, you ca
n touch vari
o
u
s optio
ns to
compl
e
te the corre
s
p
ondin
g
function.
Figure 7.Tou
c
h screen o
p
e
rato
r interfa
c
e
4. The Res
u
lts and
Discu
ssion
Firstly, the
water tan
k
sho
u
ld be
level,
and the
vario
u
s p
a
rt
s of t
he wi
rin
g
an
d pipin
g
sho
u
ld b
e
co
nne
cted. Th
e
n
turn
on th
e
power
su
ppl
y, and e
s
tabl
ish a
ne
w p
r
oject. Next we
sho
u
ld put d
o
wn the a
nal
ogue a
nd po
ur a ce
rtain
weig
ht of water into the pi
pe before cli
c
king
the s
t
art button. Until the
water
c
a
lm,
we s
h
ould
c
lick t
he finish butt
on. La
stly, re
cord the
data
on
the touch
screen. Re
peat
20 times trial.
Test data a
s
sho
w
n in Ta
b
l
e 1.
Evaluation Warning : The document was created with Spire.PDF for Python.
TELKOM
NIKA
ISSN:
2302-4
046
De
sign of a Subsequ
ent Water Dete
ctio
n System
Co
ntrolled b
y
th
e Microcontro
ller (Chu Yan
)
377
Table 1. Te
st results
Detection times
Actual w
e
ight
（）
K
g
Detection
w
e
ight
（）
Kg
rel
a
ti
v
e
error
（）
%
1 0.5
0.52
4%
2 0.5
0.46
-8%
3 0.5
0.51
2%
4 0.5
0.48
-4%
5 0.5
0.47
-6%
6 0.5
0.51
2%
7 0.5
0.48
-4%
8 0.5
0.49
-2%
9 0.5
0.48
-4%
10 0.5
0.48
-4%
11 0.5
0.46
-8%
12 0.5
0.46
-8%
13 0.5
0.51
2%
14 0.5
0.51
2%
15 0.5
0.51
2%
16 0.5
0.46
-8%
17 0.5
0.53
6%
18 0.5
0.48
-4%
19 0.5
0.53
6%
20 0.5
0.51
5%
From th
e m
easure
m
ent
results, the
rela
tive e
r
ror of 20 tim
e
s me
asurem
ents
are
betwe
en -10
%
---10%, the
accuracy
re
ach
ed to 9
0
%
which mee
t
the expecte
d req
u
iremen
t. Of
course, the measurement result
s still exist some
errors. And considering
these errors, there are
the following
two points:
①
The an
alytical form
ula theoretically
o
b
tained is g
o
t
from the ideal
situation. Su
ch as th
e
sen
s
ing
coil
axis symmetry,
this
con
d
ition
can’t b
e
a
c
hi
eved in p
r
a
c
ti
ce.
②
In experi
m
ent, the indu
ction
signal
e
x
tracted from
the weig
hing
system
will be mixed a l
o
t of
interferen
ce signal, whi
c
h
will inevitably have a ce
rtai
n influen
ce o
n
the measurement re
sult
s.
5. Conclusio
n
In gene
ral, i
n
this
pape
r,
the sanitary
wa
re sub
s
e
quent wate
r detectio
n
sy
stem
ca
n
measure the
measure
d
target mo
re
accura
tely u
nder E
N
97
7-2012
stand
ard. There
ha
s a
signifi
cant
co
ntribution to
the gua
rante
e
of co
ns
um
er ri
ghts
and
intere
sts, al
so to mai
n
ta
in
industry norm sta
ndards. But there
are still
some
problems
in the detection accuracy,
such as
anti-interference ability.
T
he
research
of key
technology pr
oblem
s
will i
n
crease the added
value
of sub
s
eq
uen
t water dete
c
t
i
on system
a
nd the market
competitiven
ess.
Referen
ces
[1]
Z
hao J
i
a
n
g
w
e
i
, Lia
n
g
Bai
q
i
n
g. Ch
ines
e s
a
nitar
y
c
e
ramic
s
e
x
p
o
rt b
a
rrie
r
s an
al
ysis.
Ceramics
. 2
011
;
(5): 9-11.
[2]
He M
engk
e,
Xi
ao
Sh
engr
a
n
, Zhou
H
a
o
m
in. Su
bs
eq
u
ent W
a
ter T
e
sting
in T
o
il
et Ca
pab
ilit
y T
e
st
S
y
stem Bas
e
d
on Co
nfig
urati
on Soft
w
a
r
e
Ki
ngVi
e
w
6.5
1
.
Industri
a
l C
ontr
o
l Co
mputer
. 200
7;
20(
5):
36-3
8
.
[3]
F
eng Me
ngl
i, Cai Y
upi
ng,
Song
Ch
unr
ong. T
he De
velo
pment a
n
d
Com
paris
on
of Severa
l
Electroma
gneti
c
Non
destructi
ve Detect
ed T
e
chn
o
lo
gi
es.
Journ
a
l
of Sich
uan Ord
n
a
n
ce.
201
2; 3
3
(2)
:
107-
110.
[4]
W
ang Bo, W
e
n W
e
imi
ng. "
S
ix liters
of
w
a
t
e
r
s
y
stem,
"
toil
et
w
a
ter
mode
lin
g stru
cture an
d th
e
relati
onsh
i
p b
e
tw
e
e
n
researc
h
.
Ceramics.
19
98; (1): 45-47.
[5]
Don
g
Ke, Qian
Yuxi
a, Yuan
Z
hang
yi. Ma
gn
etoel
ec
tric Spe
ed Sens
or to Detect Ultra-L
o
w
F
r
eq
ue
nc
y
Vibrati
ons.
T
E
LKOMNIKA Indon
esia
n Jour
nal
of Electric
al
Engin
eeri
ng.
2
013; 11(
5): 250
2-25
07.
[6]
Meng Ji
an. Stu
d
y
on K
e
y T
e
chni
que
of Elect
r
omag
netic D
e
tection for M
e
ta
l. T
i
anjin: T
i
anji
n
Univ
ersit
y
Electrical A
u
to
mation En
gi
ne
erin
g. 200
8.
[7]
W
ang Xian
’a
n
,
W
ang Xian
yu.
Desi
gn
of
a Ki
nd
of Po
cket Electro
n
i
c
Bal
ance.
Li
ght Ind
u
str
y
Machinery.
20
0
7
; 25(2): 11
0-1
12.
Evaluation Warning : The document was created with Spire.PDF for Python.
ISSN: 2302
-4046
TELKOM
NIKA
Vol. 12, No
. 1, Janua
ry 2014: 371 – 3
7
8
378
[8]
Lu Li
ng, Yua
n
Baosha
n, Li Yede. T
he design of
el
ectro
n
ic cashi
e
r scale b
a
sed o
n
C80
51F
35
0
computer.
Sha
ndo
ng U
n
ivers
i
ty of T
e
chnolo
g
y (Natura
l
Sci
ence).
20
09; 2
3
(3): 81-8
4
.
[9]
W
ang Lu
ya
n,
Shen Z
h
ang
gu
o, Chen
Lo
ng. T
he
Performan
c
e Anal
ys
is for
Embedd
ed S
ystems usin
g
statistics methods.
T
E
LKOMNIKA Indones
i
an Jour
nal
of Electrical
E
ngi
neer
ing
. 20
13;
11(7): 409
9-
410
3.
[10]
Che
n
Ru
itao,
Gu Hua
don
g,
Z
hen C
hen
qi.
T
ouch-screen
Contro
l S
y
ste
m
of ns Ho: Y
A
G Laser Bas
ed
on C8
05
1F
040
.
Microcomput
er Information.
201
2; 28(9): 12
3-12
5.
[11]
Yuan
Li, O
u
Ya
ng Mi
ngs
an, Ji
ang
Yin
g
. D
e
si
gn
of
Min
e
F
e
ed Inv
e
rter Mo
nitori
ng S
y
ste
m
Base
d
o
n
Delta T
ouch.
Coal Mi
ne Mach
i
nery.
201
3; 34(
4): 266-2
68.
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