Site Visit 2008 Aims and vision With PERMASENSE, we aim to: provide long-term high-quality sensing in harsh environments facilitate near-complete data recovery and near real-time delivery obtain better quality data, more effectively obtain measurements that have previously been impossible provide relevant information for research or decision making Reliability, delivery of information in near real-time, and integration of diverse sensors are ingredients for the next generation of early-warning systems.
Site Visit 2008 PERMASENSE Geo-science and engineering
functioning together Stephan Gruber, Jan Beutel, Andreas Hasler,
Igor Talzi, Christian Plessl, Mustafa Yuecel, Roman Lim, Christian
Tschudin, Lothar Thiele, Karl Aberer Site Visit 2008 Geo-science
motivation to use WSNs Climate rapidly affects the high-mountain
hazard regime. Anticipation and minimization of adverse effects
requires: Understanding mechanisms of thaw and cryogenic rock
movement Provision of transient spatial data fields of relevant
variables High lateral variability as well as difficult access and
environmental conditions constrain measurements: Weight and size of
equipment Time consumption (installation, maintenance, data
gathering) Completeness of data recovery Robustness (temperature,
lightning, mechanical wear) Synchronization Sacrificial sensors
Site Visit 2008 Aims and vision With PERMASENSE, we aim to: provide
long-term high-quality sensing in harsh environments facilitate
near-complete data recovery and near real-time delivery obtain
better quality data, more effectively obtain measurements that have
previously been impossible provide relevant information for
research or decision making Reliability, delivery of information in
near real-time, and integration of diverse sensors are ingredients
for the next generation of early-warning systems. Site Visit 2008
Project evolution Initiated by UniZH and UniBasel in 2006
(Tschudin, Gruber) Co-funded by FOEN in order to: (a) investigate
permafrost thaw and hazards, and to (b) pioneer WSNs for
environmental monitoring and early-warning. Developed 1 st
generation system from scratch Prototype deployment on Jungfraujoch
site in 09/2006 ETH Zurich joins in 2007 (Beutel, Thiele)
Development of custom DAQ hardware System testing on DSN testbed
Deployment on Matterhorn site in 09/2007 (different sensors and
logging) Joint effort to develop 2 nd generation system Deployment
of networking system in 07/2008 EPFL joins in 2008 (Aberer) Data
backend integration Site Visit 2008 Deployment 2006: Jungfraujoch,
3500m Focus:Heat transfer Status:Ready for upgrade Data:Exploratory
data gathering in winter 06/07 Site Visit 2008 Deployment 2007:
Matterhorn, 3400m Focus:Cryogenic rock movement Status:Productive
since July 08 (logging since Oct. 08) Site Visit 2008 Architecture
Site Visit 2008 Sensor nodes Shockfish TinyNode Protective shoe,
simple installation Waterproof housing and connectors Sensor
Interface Board 3-year lifetime with single battery (~300 A average
power budget) Site Visit 2008 Sensor interface board (SIB)
Development started in 2007 Diverse interfaces, low power New: 1 GB
memory (redundancy and validation) Provides very stable
measurements Site Visit 2008 Sensors Sensor rods (profiles of
temperature and electric conductivity) Thermistor chains Crack
meters Water pressure Ice stress Self potential Site Visit 2008
Base station Powerful embedded Linux 4 GB storage, all data
duplicated Solar power Backup modem Site Visit 2008 Software
TinyOS-based, fully customized Integration of Dozer (MICS, IPSN_07)
DAQ routine, profited from SNPK (Sensor Network Platform Kit, MICS)
Integration of GSN data backend (Global Sensor Network, MICS,
VLDB_06) Ongoing algorithmic research: in-memory downsampling
(storage in limited flash memory), intermittent connectivity
aspects, code optimization Site Visit 2008 Testing facilities
Networking performance (Deployment-Support Network, MICS, EWSN_07)
Power profiling Temperature and humidity cycling Sensor calibration
Rooftop system break-in Site Visit 2008 Data and geo-science
Geo-science starts now Excellent measurement stability Emerging
challenge: turning data into relevant information (aggregation,
merging distributed sensing and modeling) Site Visit 2008 Outlook
Mountains are demonstrator, real relevance much greater Large
potential for hazard surveillance and warning systems Solid basis
for continued two axis (geo/eng.) funding and integration Site
Visit 2008 Summary of main achievements Live system since July 2008
Experienced and motivated multi-disciplinary team Integration and
refinement of existing technology MICS: SNPK, DSN testbed, Dozer
& GSN Quick adaptation of resources to challenges flexible MICS
financing Sound strategic basis and vision for continuation Site
Visit 2008 Thank you Please look at our live demo outside
