MECHANICAL AND ELECTRONIC EVALUATION OF TWO COMMONLY USED POLYGRAPH INSTRUMENTS

Abstract

The evaluation of two commercial recording lie detectors was accomplished by applying known pressure signals to the inputs of the 'Cardio' and 'Pneumo' systems. Separate tests were performed on the chest expansion bellows which were calibrated in a freely suspended position. Test data were obtained in the form of traces on the chart recorder which is an integral part of each polygraph and were read from the chart grid as they would be in actual use. No corrections were made for errors introduced by use of rectilinear chart to read out curvilinear deflections.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Mar 31, 1967
Accession Number
AD0701463

Entities

Organizations

  • National Institute of Standards and Technology

Tags

Communities of Interest

  • C4I
  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Detectors
  • Dwell Time
  • Dynamic Response
  • Dynamic Tests
  • Electrical Resistance
  • Frequency
  • Frequency Response
  • Lie Detectors
  • Measurement
  • Pressure Transducers
  • Recording Systems
  • Repetition Rate
  • Resonant Frequency
  • Schematic Diagrams
  • Static Pressure
  • Static Tests
  • Test And Evaluation

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Control Systems Engineering.
  • Geodesy

Technology Areas

  • Microelectronics
  • Microelectronics - Microelectromechanical Systems