Glacsweb: a sensor Web for Glacial environments

1
Glacsweb a sensor Web for Glacial environments

• Kirk Martinez,
• Electronics and Computer Science
• Jane Hart
• School of Geography

2
Probes

• New
• Polyester case
• PCBs
• Radio Transceiver
• Power supply
• Sensors strain, resistance
• in-circuit programming

3
Probe
4
Base station v2

• New
• weather
• 2 Radio links to probes
• Larger power supply and solar panels

5
Base Station v2
6
Reference station

• Linux server, ISDN line, DGPS
• New directional antenna

7
New System Schedule
8
2004 Field site
9
map
2004
16 holes
10
Probe deployments 2004
C
B
A
T
Ice
Till
Clast
W
River
14
10
6
63m
P1
15
12
5
V
ploughmeter
1
4
3
T2/P7
T1/P2
S
16
13
2
11
30
P8
P5
P4
7
8
P6
P3
5m
9
tiltcells

• 8 probes 7 responded

11
Hole depths
C
B
A
T
Connected
Unconnected
W
14
10
6
68m
85
63m
15
12
5
V
66m
68m
68m
1
4
3
74m
70m
67m
S
16
13
2
11
70
30
16
67m
67m
7
8
74m
68m
5m
9
65m
12
borehole video of probes
13
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14
(No Transcript)
15
weather data
16
3D reconstructions

• data used to move 3D probe

probe 5
probe 8
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Battery Status

• in Aug. Probe 5 was 3.47V now it is 3.54V
• ie batteries in probes behaving very well!

• Base station lost two main batteries and could
  become critically low in winter with no solar
  charging some components reduced in frequency
  to help compensate

18
Communications

• Probes drifted in time around 2 min since
  disconnection in August
• Resynched in October and now accurate
• Probes 5,7,8 have zero retries on coms
• probe 4 has many retries and is currently
  synchronising

19
Summary

• Designed, built, tested and deployed 9 sensor
  probes, Base Station and a Reference station
• 7 probes have communicated data
• Base battery loss may be a problem
• System is working making real data!

20
Publications

• IEEE Computer, IEEE SECON papers
• J. Glaciology submitted
• PerCom submitted
• AGU special session conference Dec04
• News in IEEE Pervasive Computing
• and various tech news papers/websites

21
Future development

• mirror setup in Southampton
• Automatic graphs on web
• Tuning power use
• Semantic Web data publishing
• export technology into Gumsense
• Move technology into fragile environments
• related funding bids

22
Team 2004
(Back row) Kirk Martinez, Al Riddoch, Hannah
Brown, Richard Waller, Paritosh Padhy (Front
row) Daniel Miles, Sarita Ward, Jane Hart,
Kathryn Rose, Kim Dowsett, Royan Ong
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depth view
470
450
4
8
430
5
410
390
67
23
370
350
transceiver
20
40