Abstract
As the Kerr constant of liquid medium is small, it is difficult to accurately detect the weak signals which from electric field measurement of transformer oil based on Kerr effect. To improve the accuracy of weak signal measurement, a weak signal measurement system was designed in this paper, which consists of signal channel module, reference channel module and phase sensitive detector module. The structure parameters of the lock-in amplifier processing system were designed carefully, and the measurement performance of the designed weak signal measurement system were tested. The test result showed that the weak signal measurement system can measure the low SNR weak signals accurately, and the measuring error were less than 2µV when there was 1mV signal noise or not. The weak signal measurement system possesses high linearity and accuracy.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.