G - Physics – 01 – K
Patent
G - Physics
01
K
340/154
G01K 3/14 (2006.01) G01K 3/00 (2006.01) G01K 7/38 (2006.01)
Patent
CA 1171933
ABSTRACT OF THE DISCLOSURE An apparatus for detecting the local temperature variations of an object and the sites of the temperature variations comprises a temperature sensing element formed by a transmission line comprising a lengthwise extending strip of magnetic material having a prescribed Curie temperature, a pulse generator for supplying a pulse signal to at least one end of the temperature sensing element, a pulse time difference detector for detecting a difference between a point of time at which the pulse signal is received and a point of time at which the reflected pulse signal of the pulse signal from the site of the temperature sensing element where its characteristic impedance has changed is received, and a temperature variation site detec- tor for determining a site of temperature variation from the detected pulse time difference.
380343
Ridout & Maybee Llp
Tokyo Shibaura Denki Kabushiki Kaisha
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