sensor-based automation of residential...
TRANSCRIPT
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SENSOR-BASED AUTOMATION OF RESIDENTIAL IRRIGATION
Bernard Cardenas-Lailhacar and Michael D. Dukes, Ph.D., P.E.
Soil Moisture Sensor Project; Phase 1 December 14, 2006
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mnmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
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•USA : 58% (Avg.)
•Central Florida : 64% (Avg.) - 71%
Irrigation: a substantial opportunity for residential water savings
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Ways to Decrease Irrigation Applied
• Reduce irrigation window– Water restrictions
• Reduce the irrigated area– Landscape ordinances
• Optimize irrigation application
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OBJECTIVES
Quantify water use and turf quality on:
1) time-based tmts., with or without a rain sensor,
2) time-based tmts. compared to SMS-based tmts.
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MATERIALS AND METHODS
•Location:
On campus, UF, Gainesville, FL
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Acclima
Water Watcher
Irrometer
Rainbird
Soil Moisture Sensors
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1
2
1: SMS Controllers
2:Timer
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Rain SensorMini-Click
Set: 6 mm
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Treatments
mnmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
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Irrigation Controls
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mnmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
157269104 35
0
5
10
15
20
20-J
ul
27-J
ul
3-A
ug
10-A
ug
17-A
ug
24-A
ug
31-A
ug
7-Se
p
14-S
ep
21-S
ep
28-S
ep
5-O
ct
12-O
ct
19-O
ct
26-O
ct
2-N
ov
9-N
ov
16-N
ov
23-N
ov
30-N
ov
7-D
ec
14-D
ec
Date (2004)
Dai
ly ra
infa
ll (m
m)
0
100
200
300
400
500
600
700
Cum
ulat
ive
rain
fal (
mm
)
Daily and cumulative rainfall (2004).
944
25
30
800
900
1000
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mnmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
3942 334251
732
25
30
600
700
800
0
5
10
15
20
25-M
ar1-
Apr
8-A
pr15
-Apr
22-A
pr29
-Apr
6-M
ay13
-May
20-M
ay27
-May
3-Ju
n10
-Jun
17-J
un24
-Jun
1-Ju
l8-
Jul
15-J
ul22
-Jul
29-J
ul5-
Aug
12-A
ug19
-Aug
26-A
ug
Date (2005)
Dai
ly ra
infa
ll (m
m)
0
100
200
300
400
500
Cum
ulat
ive
rain
fall
(mm
)
Daily and cumulative rainfall (2005).
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Volumetric moisture content; 0-NI, year 2004.
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VMC through 2004, treatment 7-AC. Red dots represent allowed SIC (8% of the SIC), and the red lines represent the range of VMC when the SIC were allowed.
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Volumetric moisture content through time; 2-IM, year 2004.
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0
5
10
15
20
25
30
7/27 8/10 8/24 9/7 9/21 10/5 10/19
11/2 11/16
11/30
12/14
12/28
Date
Cum
. Irr
ig. D
epth
(in)
2-WRS 2-WORS 2-DWRS 0-CONT
2-d/week time-based
0
5
10
15
20
25
30
7/27 8/10 8/24 9/7 9/21 10/5 10/19
11/2 11/16
11/30
12/14
12/28
Date
Cum
. Irr
ig. D
epth
(in)
2-A 2-B 2-C 2-D
2-d/week
0
5
10
15
20
25
30
7/27 8/10 8/24 9/7 9/21 10/5 10/19
11/2 11/16
11/30
12/14
12/28
Date
Cum
. Irr
ig. D
epth
(in)
7-A 7-B 7-C 7-D
7-d/week
0
5
10
15
20
25
30
7/27 8/10 8/24 9/7 9/21 10/5 10/19
11/2 11/16
11/30
12/14
12/28
Date
Cum
. Irr
ig. D
epth
(in)
1-A 1-B 1-C 1-D
1-d/week
Water saved
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Mnmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmmm
mm
Cumulative irrigation depth, statistical comparisons, and percent of water savings compared to 2-WORS.
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CONCLUSIONS
No significant differences in turfgrass quality among treatments were detected no irrigation was necessary.WRS 34%< WORS importance & benefit of rain sensor.SMS savings: 69-92% (excluding brand IR).SMS-based technology could result in sound environmental and economic benefits to the state.
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CONCLUSIONS
SMS-based technology could lead to a complete automation of residential irrigation systems.
7d/w frequency used the least amount of water, and appears to be a better strategy regarding water conservation for turfgrass irrigation in Florida’s sandy soils.
c1
c2
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Slide 23
c1 schedule at 7 d/w for a whole cycle, and allow the system to decide the initiation of a SIC.cardenas, 12/11/2006
c2 SMSs can act as RSs, detecting when sufficient rainfall has occurred, but with a better performance. cardenas, 12/12/2006
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POTENTIAL FUTURE WORK
Alternative scheduling: 7d/w with 2 or more events per day, to optimize irrigation efficiency and turf quality.Optimization of the controllers set point under varying soil/weather conditions. RSs and SMSs should be tested over a longer period of time, to test their performance through time and under different weather conditions (dry periods).
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Acclima
Water Watcher
Irrometer
Rainbird
Soil Moisture Sensors
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Questions?