US 11,953,384 B2
Temperature measuring device, mechanical system, temperature measuring method, and program
Masaya Kawano, Tokyo (JP); Masahiro Sugihara, Tokyo (JP); Tadashi Kimura, Tokyo (JP); and Shinsuke Sato, Tokyo (JP)
Assigned to MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed by MITSUBISHI HEAVY INDUSTRIES, LTD., Tokyo (JP)
Filed on Jun. 21, 2021, as Appl. No. 17/353,073.
Claims priority of application No. 2020-168035 (JP), filed on Oct. 2, 2020.
Prior Publication US 2022/0107228 A1, Apr. 7, 2022
Int. Cl. G01K 11/24 (2006.01); F16C 19/52 (2006.01); G01S 15/88 (2006.01)
CPC G01K 11/24 (2013.01) [F16C 19/525 (2013.01); G01S 15/88 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A temperature measuring device comprising:
an ultrasonic sensor attached to a rear surface side of a structural body having a multilayer structure;
an acquisition unit configured to, through the ultrasonic sensor, acquire a signal of a reflected wave of an ultrasonic wave incident at an internal side of the structural body;
an extraction unit configured to, from the signal of the reflected wave, extract a domain including a reflected wave reflected on a surface on the internal side of the structural body;
an identification unit configured to, based on a signal of the reflected wave in the extracted domain, identify a temperature of the surface on the internal side of the structural body;
means to measure a reference temperature of the structural body; and
a storage configured to store an interface temperature table which defines a relationship between an amplitude of the reflected wave, the reference temperature, and the temperature of the surface on the internal side of the structural body, wherein
the identification unit acquires the reference temperature and identifies the temperature of the surface on the internal side of the structural body based on both of intensity of the signal of the reflected wave which indicates an amplitude of the reflected wave and the reference temperature by referring to the interface temperature table.