| 摘要 |
PROBLEM TO BE SOLVED: To provide a conversion arithmetic device allowing accurate and high-speed conversion processing without requiring a memory resource for storing a conversion table online. SOLUTION: The conversion arithmetic device for converting the resistance of a thermistor for measuring temperature into temperature comprises a coefficient keeping means for keeping the coefficient of each term of a high-order polynomial approximating the theoretical expression showing the relation between the resistance and temperature of the thermistor, and a temperature arithmetic means for reading the coefficient of each term from the coefficient keeping means, setting it in the high-order polynomial, substituting the resistance input from the thermistor into the high-order polynomial having the set coefficient, and calculating the temperature. COPYRIGHT: (C)2007,JPO&INPIT
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