Experimental System for the Noninvasive Detection of Air Bubbles in Tissues

Abstract

The air-bubble detection systems was designed to detect the changes in the microwave absorption properties of tissues--these changes could be caused by the introduction of air bubbles due to exposure to high altitudes. The system basically transmits a low-level modulated microwave signal through the tissue and monitors the changes in the amplitude of the received signal. The output signal from the detection circuitry can be monitored using an oscilloscope or strip-chart recorder. The system is powered by + or - 8V and +12V DC. The DC voltages are generated from the AC line using a standard AC/DC supply and post- regulators. This assembly is housed in a separate enclosure that is electrically isolated from the microwave enclosure.

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Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1990
Accession Number
ADA235458

Entities

People

  • Robert W. Paglione

Organizations

  • Sarnoff Corporation

Tags

Communities of Interest

  • Energy and Power Technologies
  • Human Systems

DTIC Thesaurus Topics

  • Aerospace Medicine
  • Air Force
  • Altitude
  • Amplitude
  • Classification
  • Detection
  • Detectors
  • Governments
  • High Altitude
  • Instruction Manuals
  • Instructions
  • Microwaves
  • Power Supplies
  • Safety
  • Security
  • Standards
  • System Safety

Readers

  • Aerospace Test and Evaluation
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Underwater engineering and Marine Technology.