1 / 18

PermaSense

PERMASENSE J an Beutel, Stephan Gruber Workshop on methods for monitoring in permafrost environment. PermaSense. www.permasense.ch. Consortium of several projects, start in 2006 Multiple disciplines (geo-science, engineering) Fundamental as well as applied research

ayita
Télécharger la présentation

PermaSense

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. PERMASENSEJan Beutel, Stephan GruberWorkshop on methods for monitoring in permafrost environment

  2. PermaSense www.permasense.ch Consortium of several projects, start in 2006 Multiple disciplines (geo-science, engineering) Fundamental as well as applied research More than 20 people, 8 PhD students

  3. Competence in outdoor sensing • Wireless systems, low-latency data transmission • Customized sensors • Ruggedized equipment • Data management • Planning, installing, operating (years) large deployments

  4. Established: deployment sites A. Hasler

  5. Established: rock/ice temperature A. Hasler Aim: Understand temperatures in heterogeneous rock and ice Measurements at several depths Two-minute interval, autonomous for several years Survive, buffer and flush periods without connectivity

  6. Results: rock/ice temperatures Hasler, A., Gruber, S. & Haeberli, W. (in review) Temperature variability and thermal offset in steep alpine rock and ice faces, The Cryosphere

  7. Established: crack dilatation Aim: To understand temperature/ice-conditioned rock kinematics Temperature-compensated, commercial instrument Auxiliary measurements (temperature, additional axes,…) Two-minute interval, autonomous for several years Protection against snow-load and rock fall

  8. Results: rock kinematics Stagnation Hasler, A., Gruber, S. & Beutel, J. (in revision) Kinematics of steep bedrock permafrost, Journal of Geophysical Research.

  9. New: acoustic emissions Aim: To understand the importance that ice-segregation, volume expansion and thermal cycling have on rock damage in natural conditions – to infer instability zones. • Continuous measurement, transmission of event statistics • Storage of raw traces • Auxiliary data (temperature, moisture, camera, … ) L. Girard

  10. New: slope movement S. Endrizzi / P. Limpach Aim: To understand cryosphere-related slope movements based on their temporal patterns of acceleration and deceleration. • Continuous GPS (years) • Daily fix (accuracy: few mm) • Auxiliary data (2 axis inclination, camera, temperatures, … ) • Several locations V. Wirz

  11. Wireless technology for a laboratory on the mountain

  12. Low-power wireless sensors Contention window Data transfer Beacon Application processing window jitter time slot 2 slot k slot 1 • Shockfish TinyNode584 • MSP430, 16-bit, 8MHz, 10k SRAM, 48k Flash • LP Radio: XE1205 @ 868 MHz • Sensor interface board • 1 GB storage • 3-year life-time • Dozer - ultra low-power data gathering system • Multi-hop, beacon based, 1-hop synchronized TDMA • Optimized for ultra-low duty cycles • 0.167% duty-cycle, 0.032mA [Burri – IPSN2007]

  13. Ruggedized for Alpine extremes [Beutel – IPSN2010]

  14. Field site support Goal: On-site data collection • Base station • Embedded Linux • Solar power system • Redundant connectivity • Local data buffer • Database synchronization • Cameras • PTZ webcam • High resolution imaging (D-SLR) • Weather station • Remote monitoring and control

  15. WLAN long-haul communication • Data access from weather radar on Klein Matterhorn (P. Burlando, ETHZ) • Leased fiber/DSL from Zermatt Bergbahnen AG • Commercial components (Mikrotik) • Weatherproofed

  16. Online data management Web export Import from field GSN GSN Private Public Metadata ============ Position Sensor type Validity period … • Global Sensor Network (GSN) • Data streaming framework from EPFL (K. Aberer) • Organized in “virtual sensors”, i.e. data types/semantics • Hierarchies and concatenation of virtual sensors enable on-line processing • Dual architecture translates data from machine representation to SI values, adds metadata

  17. Revision / Extension June 2010 Installation & Service 2008 Service 2009 Value of online data Duplicate Data [Keller – IPSN2011] • Data quality/integrity • Inconsistencies • Duplicates • Gaps • Sporadic/systematic • Long-term stability • Equipment health • Future: Early warning…

  18. ETH Zurich • Computer Engineering and Networks Lab • Institute of Geodesy and Photogrammetry • University of Zurich • Department of Geography • University of Basel • Computer Science Department Thank you for your attention Main contributors: J. Beutel, B. Buchli, A. Geiger, L. Girard, S. Gruber, T. Gsell, S. Gubler, A. Hasler, J. Hunziker, M. Keller, R. Lim, T. Strozzi, F. Sutton, I. Talzi, L. Thiele, C. Tschudin, C. Walser, V. Wirz, M. Yuecel, F. Neyer, P. Limpach, Z. Su, C. Plessl, S. Schoenborn, D. VonderMuehll, K. Aberer

More Related