By Topic

Study on Weak Signal Detecting Technology in High-Temperature Superconducting Resistance Measurement

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

3 Author(s)
Yifan Zeng ; Sch. of Inf. Sci. & Eng., Shenyang Univ. of Technol., Shenyang, China ; Yan Yang ; Mingfu Jiang

For detecting the critical transition temperature of the high-temperature superconducting material, a system using a weak signal detection approach - lock-in amplifier to acquire the R-T signals under strong noises, is constructed. The article introduces the principle of the system and focuses on the design of the whole system. The chip-AD630 from the AD company is the core component of the whole system - analog multiplier and the software-programmable V/F converter chip- AD650 also from the AD company is the A/D component of the system. The system achieves the acquisition of weak resistance signal through the well-designed lock-in amplifier. And the system acquires the temperature of the high-temperature superconducting material through the copper-constantan thermocouple, so it achieves the acquisition of the R-T(Resistance-Temperature) signals and then transmits the two-way signals to the PC through the serial port for the use of LabVIEW for the follow-up processing and display. The actual operation shows that this system can accurately detect the critical transition temperature of the high-temperature superconducting material.

Published in:

Computational Intelligence and Design, 2009. ISCID '09. Second International Symposium on  (Volume:2 )

Date of Conference:

12-14 Dec. 2009