抄録
The correction method is made up of three steps. First, the low temperature-coefficient resister is substituted for the thermister and the reference temperature is measured. Second, a body temperature is measured. The body temperature observed is affected by the changes in the room temperature and fluctuations of battery voltage. Third, the observed temperature in the second measurement step is corrected by the reference temperature measured in the first step and two other temperatures measured in advance and stored in ROM. These stored references are determined from the observation of the reference temperature at a specific room temperature and a specific battery voltage, and the observation of a known body temperature at a specific room temperature and a specific battery voltage. The analysis for each step was performed and examined by experiments. This method enables accurate measurement of a body tempeature without using expensive circuit elements besides the low temperature-coefficient resister in the first step.
