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Scientific Journal of Information Engineering June 2014, Volume
4, Issue 3, PP.72-77
On Temperature Measurement with IR for
Sensor Node Deployment in Oil-Gas Gathering-
Transferring Station Information Processing Technology
Rui Dan, Xueyu Zou#
Electronics Information School, Yangtze University, Jingzhou
434023, China
# Email: [email protected]
Abstract
According to infrared (IR) radiation attenuation mechanism at
different distance to monitor a special objects apparent
temperature in
oil-gas gathering-transferring station, in this paper, a
temperature measuring equivalent model with IR attenuation
coefficient method
in the whole measuring range was proposed, and the sensing
distance of IR temperature measurement for an equivalent
sensitivity was
derived. The number of nodes and sensors needed for determined
deployment in WSN were presents consequently. The effects of
the
objects alert temperature and airs on the measurement of
equivalent atmosphere attenuation were analyzed by numerical
calculation.
The objects real apparent temperatures were estimated by the
measured values at different distance between the sensor and
object.
The results shows that the maximal relative error of temperature
measurement was not exceed 7.57% (K), so, it can offer some
reference for the scene of temperature monitoring sensor
deployment in oil-gas gathering-transferring station.
Keywords: Infrared Temperature Measurement; Air Attenuation
Coefficient; Sensor Deployment; WSN
*
434023
WSN
7.57%(K)
50%[1]
[2-4]
[5]
[6-9]
*2011D-5006-0605D20091204201310489005
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[10]
(Wireless Sensor Networks, WSN)WSN
--
1
[6]
R
2t 0
t2
( , ) 1( ) ( ) ( , ) tan
2
Rt
S D D t
M TP R R A A A M T e
R
1
Tt (K)AS AD
(R)=e-R 0
tan2(0/2)
=2 - 1 (12) (12)
Mt(,Tt)(12)[7~9]
(Wt(,Tt)-Wt(,Ta)) We(,Te)Te
Wa(,Ta)Ta
W(,Tb)=Wt(,Tt) - Wt(,Ta)+ We(,Te)+ Wa(,Ta) 2
L(12)= (Lt(,Tt) - Lt(,Ta))+ Le(,Te) 3
M12(T)=(R)[(Mt(,Tt) -Mt(,Tt))+ Me(,Te)]+ Ma(,Ta) 4
0-(12) 4( , ) mM T kT T 5
k m (12)
Tb ..
(12) =/
( ) [( ) ]m m m R mb t a aT R T T e T
6
R 0
(0)
( )
m m
b t
m m
b a
T T
T T
7
Tb(0) R=0 Tb()
Ta 176
R
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( ) [ (0) ( )] ( )m m m R mb b b bT R T T e T 8
8 R=r=1/ 1( ) [ (0) ( )] ( )m m m mb b b bT r T T e T
9
r m m e-1
9 Tb(r) rr
=1/r
Tb(r1)Tb(r1)
1
2 1 2
( ) ( )1ln
( ) ( )
m m
b b
m m
b b
T r T
r r T r T
10
( ) ( ) ( )m mT b bf R T R T (0) (0) ( )m m
T b bf T T 8
( ) (0) RT Tf R f e 11
11 '| ( ) | (0) RT Tf R f e
12
12 Tb(R) R R |fT'(r)|
rm|fT'(rm)|=|fT'(r)|
(1 ln ) / (1 ln )mr r 13
2
1
(
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WSN
L
W
1d
2d
mr
2
rm S(LxW)
2
N
2 1
2
33 mm
L W L WN
d d rr
16
x x
0
Ns
0
2 360( 1)
33s
mm
L WN
rr
17
17
4
4.1
3 Tb(r) 4 Tb(r)
270 280 290 300 310 320 330315
320
325
330
335
340
340 350 360 370 380 390 400 410 420 430315
320
325
330
335
340
345
350
355
360
365
Air temperature (K) Alert temperature (K)
Tb(r
)
(K)
Tb(r
)
(K)
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Tb(0)=363K(90C) Tb()=273~323K(0C~50C)
9 r Tb(r) Tb() 3
Tb(r)
Tb()=300K(27C)
Tb(r) 4 Tb(r)
Tb(0)=363K(70C~200C) Tb(r)
4.2
MLX90614 1:11.6 292.19K 20cm~200cm
11.0cm*15.5cm 353.23K 5*
,x9 Tb(r)=318.84K
r=145.1cmr0=127.6cm r0
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1992-
-- 2011
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1988
1999
2008
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