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OASIS System
On-Line Alerting of Structural Integrity and Safety

OASIS is a hardware and software system for real-time, on-line monitoring of structures for continuous evaluation of structural integrity.

OASIS performs four vital functions:

  • Remote, real-time alerting using on-screen imaging and audible alarms
  • Doubles as an event-triggered, high dynamic range, high speed accelerograph
  • Remote control and display of system functions through direct feedback, "hands on," Windows environment
  • Long-term health monitoring

Improved public safety through better management decisions

  • Reduced response time through fast communication and intelligent processing
  • Better information with on-line analysis of structural status
  • Visual displays create better understanding of critical problems

Key Features
Highly flexible
Expandable through networking
High resolution
True multitasking with Windows 95
Continuous data transmission and display
Application
Critical structures, vital lifelines:

OASIS uses a variety of sensors and a unique set of parameters and safety criteria derived from the engineers who continuously monitor structures for critical behavior. Exceedance of pre-established levels will result in audible and/or visual alarms requiring response from the structure operators or managers.
The sensor subsystem can include any of the following:
  1. Acceleration monitoring
  2. Wind monitoring
  3. Temperature
  4. Strain
  5. Tilt/deflection
The standard acquisition system includes the following:
  1. High resolution, high dynamic range digital event recorder (please see the K2 and Mt. Whitney data sheets for more detailed information)
  2. OASIS data processing command and control subsystem
  3. Continuous status display
System monitoring software includes the following:
  1. Visual display of subject structure including sensor icons
  2. Level 1 real-time, dual-level alerting of damage states including location
  3. Sensor icon, click-on waveform display and statistics from any channel
  4. Remote command/control of acquisition system
  5. Expandable to multiple bridges/systems using network methods