Masters Theses

Abstract

"This thesis reports the design of a system which can measure and record the cardiac interbeat times of human subjects in a continuous beat to beat manner, using the bioelectrical signal associated with the heart as an input. The design is in response to the needs of clinical researchers.

The means of obtaining the bioelectrical signal and previous designs of electrocardiographic equipment, especially electrocardiotachometers, are reviewed. A design is proposed which consists of a preamplifier to amplify the bioelectrical signal, a 60 Hz rejection filter, and a beat detector which uses a differentiation technique to obtain a reliable single output pulse for each cardiac cycle. The detector output pulse is used to control the input of a clock pulse train to a five decade counter. The pulses within the train are repeated at a rate of 104 pulses per second. The output of the counter is stored in memory circuits at the end of each cardiac excitation interval, and the counter is reset for the next interval. The output of the memory circuits is recorded with a digital printer, yielding a printed record of interbeat times"--Abstract, page ii.

Advisor(s)

Crosby, Herbert A., 1926-1992

Department(s)

Electrical and Computer Engineering

Degree Name

M.S. in Electrical Engineering

Publisher

University of Missouri--Rolla

Publication Date

1972

Pagination

vii, 58 pages

Note about bibliography

Includes bibliographical references (pages 55-57).

Rights

© 1972 Richard William Mooney, All rights reserved.

Document Type

Thesis - Open Access

File Type

text

Language

English

Library of Congress Subject Headings

Heart beat -- Measurement
Electrocardiography
Electronic circuit design

Thesis Number

T 2872

Print OCLC #

6029227

Electronic OCLC #

904987567

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