METHOD FOR NON-CONTACT, NON-POWER AND WIRELESS MEASUREMENT OF TEMPERATURE BY SURFACE ACOUSTIC WAVE

摘要

The present invention relates to a non-powered and contactless surface acoustic wave temperature sensor. According to an embodiment of the present invention, the temperature sensor includes: an antenna which receives a sensor driving signal from a temperature measuring device; an IDT generating surface acoustic waves through the received sensor driving signal; a piezoelectric substrate propagating the surface acoustic waves generated in the IDT; and an acoustic reflector which reflects the surface acoustic waves to propagate again the surface acoustic waves to the IDT.