A Method of Lower S/N Signal Detection by Amplifier and Computer

Abstract:

A new detection method of weak signal mixed in strong noise is proposed. The method includes theory scheme, hardware and software. It detects and processes signal by using the instrument magnifying technology and single-chip microcomputer control. By means of virtual instrumentation simulation and display, this design provides effective methods to detect µA-level weak signal in piezoelectric infrared detector. Through the experiment of simulate low frequency weak signal detection, the system fully reveals its practicality and superiority in the field of lower S/N signal detection.

• Periodical: Advanced Materials Research (Volumes 433-440)
• Pages: 4559-4564
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.433-440.4559
• Online since: January 2012
• Authors: Qi Rong Lu, Yan Bing Wei, Bing Huang, Dong Mei Gao
• Keywords: Amplifier, Infraredlocator, Noise, S/N, Virtual Instrument (VI), Weak Signal

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