To realize rapid and continuous measurement in a contact-type internal thermometer.
A contact-type internal thermometer 100 relating to the invention comprises: a first temperature sensor laminate 31 that is formed by stacking a first temperature sensor and a first thermal resistor and is thermally connected to a measuring surface 20; a second temperature sensor laminate 41 that is formed by stacking a second temperature sensor and a second thermal resistor and is thermally connected to the measuring surface 20; an environmental temperature sensor 50 that measures an environmental temperature; and a controller that predicts a first predictive steady-state temperature of the first temperature sensor and a second predictive steady-state temperature of the second temperature sensor from multiple measurement results in a non-steady state, calculates a third predictive steady-state temperature of the first thermal resistor and a forth predictive stead-state temperature of the second thermal resistor from the first predictive temperature, the second predictive temperature and the environmental temperature, and calculates an internal temperature of a measuring object on the basis of the first through fourth predictive temperatures.
KUROYAMA YUKIO
MATSUMOTO TOMOKO
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