Patent ID: 11913842
Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
Field: Measurement (Instruments)
Classification: CPC G  H | IPC G  H

Claim 1:
2. A temperature sensor comprising:
a piezoelectric substrate that propagates a surface acoustic wave;
a comb-shaped electrode on the piezoelectric substrate;
a first temperature detection reflector on a same surface of the piezoelectric substrate as the comb-shaped electrode and at a position opposing the comb-shaped electrode;
a second temperature detection reflector on the same surface of the piezoelectric substrate as the comb-shaped electrode and at a position opposing the comb-shaped electrode and on a side opposite to the first temperature detection reflector with reference to the comb-shaped electrode; and
a piezoelectric body that is joined to a back surface of the piezoelectric substrate opposite to a surface of the piezoelectric substrate on which the surface acoustic wave propagates, the piezoelectric body being located between the comb-shaped electrode and the second temperature detection reflector, and the piezoelectric body being configured to be deformed by an electromotive force of a thermocouple to change a path length of a propagation path of the surface acoustic wave on the piezoelectric substrate with respect to a path length before deformation by the electromotive force.