PROBLEM TO BE SOLVED: To improve accuracy in measuring a temperature at a deep portion.SOLUTION: A temperature measurement device includes a temperature measurement unit 43, an arithmetic logical unit 74, and a control unit 73 for controlling operations of the temperature measurement unit and the arithmetic logical unit. The temperature measurement unit 43 includes: a base material 40 having a first surface which is a surface contacting with an object to be measured, and a second surface which faces the first surface and is a surface on the surroundings side a first temperature sensor 50 a second temperature sensor 52 a surrounding temperature acquisition unit 53 and a heat flow control unit 61 provided on the second surface which is the surface of the base material 40 on the surroundings side. The heat flow control unit 61 performs heat exchange with the surroundings so as to make a temperature on the second surface of the base material come closer to a temperature of the surroundings, compared with the case where the heat flow control unit is absent. The first temperature sensor 50 and the second temperature sensor 52 perform multiple measurements of a first temperature and a second temperature, respectively, under the conditions that a third temperature is different. The arithmetic logical unit 74 calculates a deep portion temperature Tc in a deep portion of the object to be measured, on the basis of an operation expression for the deep portion temperature.COPYRIGHT: (C)2014,JPO&INPIT【課題】深部温度の測定精度を向上させること。【解決手段】温度測定装置は、温度測定部43と、演算部74と、温度測定部および演算部の動作を制御する制御部73と、を含み、温度測定部43は、被測定体との接触面である第1面と、第1面に対向する面であって、環境側の面である第2面とを有する基材40と、第1温度センサー50と、第2温度センサー52と、環境温度取得部53と、基材40の環境側の面である第2面上に設けられた熱流制御部61と、を有し、熱流制御部61は、基材の第2面における温度を、熱流制御部が無い場合と比較して、より環境の温度に近づけるように、環境との間で熱交換を行い、第1温度センサー50および第2温度センサー52は、第3温度の値が異なるという条件の下で、第1温度および第2温度を複数回、測定し、演算部74は、被測定体の深部における深部温度Tcを、深部温度の演算式に基づいて求める。【選択図】図2
