Thermal measuring and testing – Temperature measurement – By a vibratory effect
Patent
1984-05-23
1987-03-17
Frankfort, Charles
Thermal measuring and testing
Temperature measurement
By a vibratory effect
374119, G01K 1126
Patent
active
046503463
ABSTRACT:
The invention relates to an arrangement for ultrasonic temperature measurement. The arrangement combines an ultrasonic temperature sensor and an electronic operating circuit. The ultrasonic temperature sensor comprises an acoustic waveguide, a second acoustic wave propagating resonant element, which is exposed to the thermal conditions under measurement, and whose resonant frequency becomes an indication of the temperature, and decoupling means inserted between the waveguide and the resonant element to facilitate high "Q" operation of the sensor. The arrangement utilizes torsional waves if a solid waveguide is employed, or internal surface waves with axial symmetry if a hollow waveguide is employed. The sensor is excited by a pulsed CW source, whose carrier is retuned to the resonant frequency of the sensor, and measured as the indication of temperature. The electronic operating circuitry achieves improved accuracy in temperature measurement as the "Q" of the sensor increases.
REFERENCES:
patent: 3487690 (1970-01-01), Bell et al.
patent: 3540265 (1970-11-01), Lynnworth
patent: 3633423 (1972-01-01), Bell
"Flexible Capillary Ultrasonic Delay Lines", R. L. Rosenberg et al, Transactions on Sonics and Ultrasonics, vol. SU-24, No. 1, Jan. 1977, pp. 1-6.
"The Development of the Quartz Resonator as a Digital Temperature Sensor with a Precision of 1.times.10.sup.-4 ", A. Benjaminson et al, Temperature: Its Measurement and Control in Science and Industry, vol. 4, 1972, pp. 701-708.
"Ultrasonic Thermometry Using Resonance Techniques", J. F. W. Bell, Temperature: Its Measurement and Control in Science and Industry, vol. 4, 1972, pp. 709-713.
Baker Carl W.
Frankfort Charles
General Electric Company
Lang Richard V.
Scanlon Patrick R.
LandOfFree
Arrangement for ultrasonic temperature measurement using a reson does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Arrangement for ultrasonic temperature measurement using a reson, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Arrangement for ultrasonic temperature measurement using a reson will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1785429