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ENSCO, Inc. Compact Infrasound Sensor (CIS). A Fresh Approach For A Continuing Need Presented By Wayne DeVoe Systems Engineer GeoSystem Solutions Division. OVERVIEW. Compact Infrasound Sensor (CIS). CIS Potential Installation Improvements CIS Design Specifications CIS Construction

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compact infrasound sensor cis

ENSCO, Inc.

Compact Infrasound Sensor(CIS)

A Fresh Approach For A Continuing Need

Presented By

Wayne DeVoe

Systems Engineer

GeoSystem Solutions Division

overview
OVERVIEW

Compact Infrasound Sensor (CIS)

  • CIS Potential Installation Improvements
  • CIS Design Specifications
  • CIS Construction
  • CIS Preliminary Test Results, with a new digitizer
  • CIS Applications
  • Future Plans for the CIS
  • CIS Availability
presentation purpose
Presentation Purpose
  • Inform Community of the CIS and Its Potential
  • Obtain Critical Review of Developmental Activities
  • Identify Evaluation Opportunities
  • Seek Community Input on Desired Performance and Features
cis potential installation improvements
CIS Potential Installation Improvements
  • Allows Use of Existing Infrastructure (boreholes, vaults, enclosures, etc.)
  • Compactness Offers New Approaches
    • Ability to Disguise Installation Sites
    • Less Vulnerable to:
      • Flora
      • Fauna
      • Environmental Conditions
      • Theft and Vandalism
    • Noise Reduction from Wind and Cultural Activities
cis design specifications
CIS Design Specifications
  • Frequency Range 0.01 to 10 Hertz
  • Analog Range ± 100 Pascals ( ± 0.4 inches of water )
  • Sensitivity 0.6 milliPascals @ 1.0 Hertz
  • Noise Level 0.3 milliPascals @ 1.0 Hertz
  • Dynamic Range 110 dB
  • Linearity TBD ( currently under evaluation )
  • Temperature Stability TBD ( currently under evaluation )
  • Output Voltage ± 1.25 Volts
  • Input Power 5.0 Volts @ 100 milliAmps
  • Input Port 1/8-inch barbed fitting
  • Bleed port 100 seconds time constant
  • Dimensions 2.5 inches in diameter by 3.5 inches in overall length
  • Weight less than 2 pounds

(Meets International Monitoring System Requirements)

cis construction
CIS Construction
  • Physical
    • Compact
    • Simple Design
      • Precision Machined Housing
      • Enclosed Electronics
    • Rugged and Durable
    • Reliable
cis preliminary test results
CIS Preliminary Test Results
  • All Tests performed with a high resolution 24-bit digitizer
  • Test 1
    • Small Balloon Burst from 5 inches
  • Test 2
    • Small Balloon Burst from 10 inches
  • Test 3
    • Opening Large Door into Enclosed Room
  • Test 4
    • Closing Large Door into Enclosed Room
  • Test 5
    • Blowing a Breath into Sensor from 12 inches
  • Test 6
    • Shooting Compressed Nitrogen Stream Across Sensor
cis applications
CIS Applications
  • Construction of New Infrasound Systems
  • Replacing Older Infrasound Systems
  • Installs in Any Protected Enclosure
  • Can be Installed with Seismic Sensors in Existing Boreholes with the New Four-Channel Digitizer
new four channel digitizer benefits
New Four-Channel Digitizer Benefits
  • Compact Design Allows Ease of Installation
  • Installs Anywhere – Completely Sealed
  • Flexible Input and Control Configurations
  • Compatible with Wide Range of Sensors
  • Extremely Low Power – Approx. 1 Watt
  • Flexible Supply Voltage – 8 to 32 Volts
  • Optional, Internal FIPS Compliant Authentication
future plans for cis and digitizer
Future Plans for CIS and Digitizer
  • Establish Active Liaisons in the Community
  • Evaluate Engineering Models Relative to Existing Sensors
  • Obtain Additional Feedback from the Community
  • Conduct Independent Specification Validation Testing
  • Offer Units for Commercial Sales
cis availability
CIS Availability
  • Units for Test and Evaluation
    • Early 2002
  • Commercial Units
    • Earliest – Mid 2002
    • Driven by Interest
  • Integrated with New Four-Channel Digitizer
    • Earliest – Late 2002
    • Driven by Interest
summary
Summary
  • Sensor development going extremely well
  • Performance looks promising
  • Testing and validation continuing
  • Expect evaluation units early next year