corpo nazionale soccorso alpino e speleologico 5 th european cave rescue meeting 2011 starigrad...
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Corpo Nazionale Soccorso Alpino e Speleologico
5th European Cave Rescue Meeting 2011
Starigrad Paklenica, Croatia
15th – 18th September 2011
PRESENTATION OF RESULTS IN TESTING OF EQUIPMENT,
TECHNIQUES AND PROCEDURES OF CAVE RESCUE
CNSAS - Commissione Tecnica Speleologica
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C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
The Commissione Tecnica Speleologica is a CNSAS committee intended to work on technical subjects
Members come from almost regions of Italy
Subjects the CTS works on:
•Design of a new stretcher
•Design of an helmet for the casualty
•Real time forces measurement system for rescue maneuver characterization
•Development of a proprietary wired telephone
What is CTS
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new stretcher
helmet
rescue maneuver characterization
wired telephone
Subjects
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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- Single UIAA equipment is provided with its maximum
ratings
- In a rescue system several equipment interact each
other
- The whole system behavior can hardly be predicted
by theoretical thoughts
Rescue maneuver (considerations)
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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What’s going to happen, anchor by anchor, during the
execution of a rigging maneuver?
o Strength on each equipment changes instantaneously
according to the geometry that changes through the
maneuver
o Some geometries could lead to unexpected loads
What about the residual safety margins?
What’s going to happen if something breaks?
Could some configuration be simplified?
Rescue maneuver testing: why?
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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An approach
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A data measurement and recording tool is proposed
Portable and on-field operable
Simultaneous multiple points acquisition
Real time acquisition and analysis
Post acquisition data processing
Requirements
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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Portable and on-field operable
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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Simultaneous multiple points acquisition
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The data acquisition system is composed by:
12 strain gauge load cells (0 – 3000 kg)
16 bits USB data acquisition card (National Instruments™ DAQ)
Laptop
Home made software for data recording and post-processing
System description
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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System description: load cells & DAQ
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DAQ BOXDAQ BOX
USBUSB
Operating scheme
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One load cell mounted on each relevant point (belays, stretcher, pulleys, …)
All the strengths measured and saved real time
Raw graphics available on the fly
Post-processing and data filtering is allowed trough an home-made software developed by CTS
Finally some graphics are reported for the highlights
The data acquisition process
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Load cells positioning
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Home-made software
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Graphic of loads
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The data processing is followed by an in deep analysis:
- Graphics analysis and annotation- Live recorded notes- Discussion
The results of the investigation are described on a structured technical report
Data acquisition results
C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
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Three main sections
Introduction: abstract, brief description of the
technique and its variants
Operating scheme: geometrical data (angles,
lengths,..) load cells positions,
Data analysis: graphics explanations
Conclusions and final discussion
Technical report
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Graphics analysis and annotation
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Technical report
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• Characterization of the “standard” rigging
techniques adopted and deployed within the
CNSAS
• Analysis of faults
• Analysis of new techniques (collaboration with
the SNATSS - Caving Rescue Technician
National School)
State of the art
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C.N.S.A.S. Commissione Tecnica Speleologica Paklenica 16 Sept 2011
DON’T LET OUR BraIN
DOWNBUT…
FIRST OF ALL…
UPSIDE
Thanks for your
attention