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

Claim 0:
1. A temperature sensor comprising:
a first piezoelectric substrate that propagates a first surface acoustic wave;
a first comb-shaped electrode on the first piezoelectric substrate;
a first temperature detection reflector on a same surface of the first piezoelectric substrate as the first comb-shaped electrode and at a position opposing the first comb-shaped electrode;
a second piezoelectric substrate that propagates a second surface acoustic wave;
a second comb-shaped electrode on the second piezoelectric substrate;
a second temperature detection reflector on a same surface of the second piezoelectric substrate as the second comb-shaped electrode and at a position opposing the second comb-shaped electrode; and
a piezoelectric body that is joined to a back surface of the second piezoelectric substrate opposite to a surface of the second piezoelectric substrate on which the second surface acoustic wave propagates, 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 second surface acoustic wave on the second piezoelectric substrate with respect to a path length before deformation by the electromotive force.