Accession Number : AD0695463

Title :   MODIFICATION AND APPLICATION OF THE BIOTHERMAL ANALOG COMPUTER.

Descriptive Note : Final rept. Feb 66-Sep 68,

Corporate Author : WASHINGTON UNIV SEATTLE DEPT OF PHYSIOLOGY AND BIOPHYSICS

Personal Author(s) : Brown,Arthur C. ; Johnson,David L.

Report Date : JUN 1969

Pagination or Media Count : 47

Abstract : The present report is the third in a series on the electronic analog simulation of the human temperature regulation system. The objectives of the present work were (1) to redesign the original computer circuit to improve reliability; (2) to extend the computer capability to enable simulation of response to solar (or other point source) incident heat load; (3) to compute human survival time for a subject confronted with high heat loads and high ambient humidity. The first objective was realized by substituting electronic for mechanical elements in the computer. Equations relating body heat load to incident solar radiation were developed and the simulating circuits designed and constructed to realize the second objective. The third objective, simulation of hot, humid environments, resulted in the recommendation that exposure to high temperature (45-50C) should be limited to 0.5 hours, with progressively greater exposure time permissible at lower environmental temperatures. (Author)

Descriptors :   (*BODY TEMPERATURE, MATHEMATICAL MODELS), SIMULATION, ANALOG COMPUTERS, HUMIDITY, SOLAR RADIATION, HUMANS, STRESS(PHYSIOLOGY), HEAT TOLERANCE

Subject Categories : Stress Physiology
      Computer Hardware

Distribution Statement : APPROVED FOR PUBLIC RELEASE