Accession Number : AD0683292

Title :   BIOMEDICAL APPLICATIONS OF A COMMERCIAL CAPACITANCE TRANSDUCER,

Corporate Author : FEDERAL AVIATION ADMINISTRATION WASHINGTON D C OFFICE OF AVIATION MEDICINE

Personal Author(s) : Podolak,Edward ; Kinn,James B. ; Westura,Edwin E.

Report Date : MAR 1968

Pagination or Media Count : 13

Abstract : A capacitive displacement transducer with a linear response and constant sensitivity for a frequency range of 0-1,000 Hz is described. Its application to measurement of chest wall motions was verified using static displacements from flat and curved surfaces and both metal and human tissue. The transducer has been used to obtain recordings of apex motion, heart sounds, brachial and radial pulses. (Author)

Descriptors :   (*MEDICAL EQUIPMENT, TRANSDUCERS), (*THORAX, TRANSDUCERS), SENSITIVITY, EXTREMELY LOW FREQUENCY, CAPACITORS, RECORDING SYSTEMS, MOTION

Subject Categories : Medical Facilities, Equipment and Supplies
      Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE