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KMID : 0371019730060010065
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Journal of Preventive Medicine and Public Health
1973 Volume.6 No. 1 p.65 ~ p.70
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An Experimental Study on the design of the thermister thermometer
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Yun Dork-Ro
Kim Ik-Su
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Abstract
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The study in the fild of medical instrument has been out of the, interest by any of the life scientist in Korea. Especially, the recent developments in the medical electromics are remarkable one.
Authors planned this study to ascertain the possibility of setting up the thermister thermometer with available accessories of demestic prouducts including some specific foreign assembly parts.
By proper use of the thermister as one of the wheatstone bridge, we could detect the resistance variations due to the environmental temperature variace. The intensive care for the bridge circuit and compensation scheme was required. The calibration procedure adopted here makes it possible to read the current as the temperature. The temperature range was determined by the examination and construction of the graph of the resistance-temperature variation. The determination of electric current, available ambient-temperature, the reduction of excessive current and selfheating of the thermister were made. Renovation in response-velocity was under taken too. This -electronic thermometer was designed and assembled by the circuitry developed in accordance with the maximum availability of domestic products with some foreign-made parts. The result of our experiment showed very stable function and proved to be the most promissing item in the actual application as long as the thermister thermister is concerned.
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