Thermal measuring and testing – Temperature measurement – By electrical or magnetic heat sensor
Patent
1997-06-23
1999-11-02
Gutierrez, Diego
Thermal measuring and testing
Temperature measurement
By electrical or magnetic heat sensor
338 25, 338 28, G01K 716, H01C 702, H01C 704
Patent
active
059757582
ABSTRACT:
Disclosed herein is a method and sensor for easily detecting the thermal history (or the change in state by heat) of a specimen. The sensor is made up of a pair of electrodes 1, 1, a diffusion layer 2 of insulating material disposed between the electrodes, and an electrically conductive metal 3. The electrodes are electrically isolated from each other in the beginning. As the sensor experiences heat history, the electrically conductive metal diffuses into the diffusion layer 2, thereby changing the resistance of the diffusion layer. When in use, the sensor is placed in or near the atmosphere to which the specimen is exposed. In response to the change of the specimen by heat, the electrically conductive metal 3 diffuses into the diffusion layer 2 to such an extent that the electrical resistance across the electrodes extremely decreases after a certain period of time. Thus it is possible to detect the deterioration or life of the specimen by monitoring the change in electrical resistance of the sensor.
REFERENCES:
patent: 5473304 (1995-12-01), Friese et al.
patent: 5823680 (1998-10-01), Kato et al.
Kizaki Yoshimi
Motohiro Tomoyoshi
Sakamoto Yoshiyuki
Yokota Koji
Gutierrez Diego
Kabushiki Kaisha Toyota Chuo Kenkyusho
Verbitsky G.
LandOfFree
Method and sensor for detecting thermal history does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and sensor for detecting thermal history, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and sensor for detecting thermal history will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2126313