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An Automatic Logging System for Biomedical Test Data

Report Number: AMRL TDR 64-50
Author: Hovey, William J.
Author: Gilmore, Jesse E.
Author: Kissen, Abbot T.
Corporate Author: University of Dayton Research Institute
Laboratory: Biomedical Laboratory
Date of Publication: 1964-06
Pages: 17
Contract: AF 33(657)-8521
Project: 7164
Task: 716409
AD Number: AD0604861

An automatic data acquisition system was designed to minimize the data reduction of biomedical test data. The overall system consists of two main parts; a hardware group, which digitizes and records the raw data, and a com puter program, which reduces the data and presents it in tabular form for ready analysis. The system is capable of simultaneously recording up to 27 thermocouple, 27 thermistor, and 24 miscellaneous data channels during any given experiment. The sampling speed is such that it takes approximately 6 seconds to record all 78 channels. Major design considerations were ease of use, utility, flexibility, and reliability. All scale factors and calibrations, both linear and nonlinear, will be effected by the computer program; the recording hardware only digitizes and records voltage levels.

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