TEMPERATURE CALCULATION SYSTEM AND TEMPERATURE CALCULATION PROGRAM

To provide a temperature calculation system and a temperature calculation program capable of accurately calculating a temperature between a transmission unit and a reception unit, even when the distance between the transmission and reception units is long.SOLUTION: A basic wave BW composed of a low-frequency continuous wave is generated by one of sound wave transmit-receive devices 1 in a pair and is transmitted from a sound wave oscillator 2 thereof to a sound wave oscillator 2 of the other sound wave transmit-receive device 1 of the pair. Thereby, attenuation of a received wave RW having been received by the sound wave oscillator 2 is suppressed, so that propagation time of the received wave RW can be accurately calculated even when a distance between the pair of sound wave transmit-receive devices 1 is long. Since this propagation time is calculated by a difference between phases of the basic wave BW and the received wave RW, it is possible to calculate a propagation time even when the basic wave BW and the received wave RW are continuous waves. A temperature between the pair of sound wave transmit-receive devices 1 is calculated from the propagation time that is calculated this way. Thereby, it is possible to accurately calculate the temperature even when the distance between the sound wave transmit-receive devices 1 in the pair is long.SELECTED DRAWING: Figure 2 【課題】送信部と受信部との間が長距離であっても、送信部と受信部との間の温度を正確に算出することができる温度算出システム及び温度算出プログラムを提供すること。【解決手段】ペアの音波送受信装置１で低周波かつ連続波による基準波ＢＷが作成され、音波振動子２からペアを形成する他の音波送受信装置１の音波振動子２に送信される。これにより、音波振動子２で受信した受信波ＲＷの減衰が抑制され、ペアの音波送受信装置１間が長距離でも、受信波ＲＷの伝搬時間を正確に算出できる。かかる伝搬時間が基準波ＢＷと受信波ＲＷとの位相差で算出されるので、基準波ＢＷと受信波ＲＷとが連続波であっても伝搬時間を算出できる。このように算出された伝搬時間からペアの音波送受信装置１間の温度が算出される。これにより、ペアの音波送受信装置１間が長距離であっても、温度を正確に算出できる。【選択図】図２