Advanced Sensors for Field Server M. Hirafuji, H. Hu and T. Fukatsu Computational modeling Lab....
-
Upload
diane-morris -
Category
Documents
-
view
214 -
download
0
Transcript of Advanced Sensors for Field Server M. Hirafuji, H. Hu and T. Fukatsu Computational modeling Lab....
Advanced Sensors for Field Server
M. Hirafuji, H. Hu and T. Fukatsu
Computational modeling Lab.National Agricultural Research Center
Tsukuba Japan
Requirements and Strategy
Effective sensation
Low energyconsumption
Low cost
Small
Maintenance-free
Calibration-less
Mass-production with system LSI
Combination of sensor-net and conventional
sensors
New sensors by new methods
Data sharedby user’s
collaboration
Internationalcollaboration
Interdisciplinarycollaboration
Effective Sensation
• Temp, RH, Light and Image for all users
• CO2 for farmers and environmental scientists
• UV for outdoor sport players and environmental scientists
• Wetness for housekeepers and farmers
• Soil Moisture for farmers and environmental scientists
• Virus and bacteria for residents, farmers and biological scientists
UV, CO2 and Leaf-wetness sensors
Raindrops
Humidity sensor
Screen
Wetness Sensor
Installed Wetness Sensor
Wetness Detection
Humidity (Raw data)
0
20
40
60
80
100
120
140
160
180
200
0:00:4
3
2:03:4
2
4:03:4
2
6:03:4
2
8:03:4
2
10:03
:42
12:03
:42
14:03
:42
16:03
:42
18:03
:42
20:03
:42
22:03
:42
Relationship CO2 & UV
250
300
350
400
450
500
550
0 20 40 60 80
CO2[ppm]
UV(raw)
Fully Unwired (Cable-less)
Network Architecture
Hotspot
Interconnection between APs
Cable
Conventional Field Servers(Access-point, Continuously work)
Solar-energy Driven Field Servers(Client connection, Intermittent work)
A Result of Field Test
0
10
20
30
40
50
60
70
80
90
9/4 9/14 9/ 24 10/ 4 10/14 10/24 11/3 11/13
RH[%]
Temp[℃]
Battery[V]
Conclusions
• Solar-cell-driven Field Server was developed for sensor-network.
• Leaf-wetness sensors was developed.
• CO2 & UV sensors were tested.
• New sensors can be developed instantly by using Field Monitoring Servers
• 3ch soil moisture sensor is under developing.