کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7147597 1462098 2014 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Evaluation of a simple PC-based quadrature detection method at very low SNR for luminescence spectroscopy
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
Evaluation of a simple PC-based quadrature detection method at very low SNR for luminescence spectroscopy
چکیده انگلیسی
We developed a PC-based phase measuring system based on the principles of quadrature detection with ideal features for accurately determining the amplitude and phase of a sinusoidal signal, even in the presence of very high noise levels. This detection technique was implemented via software on a personal computer (PC), and its response was analyzed using experimental tests under different noise conditions using 1 s test signals. Additionally, this technique was implemented and was subsequently evaluated using a real measurement system (a versatile and low-cost optical-fiber measurement system for optically detecting oxygen in the gas phase) under different lighting conditions. The results demonstrate the robustness of the proposed technique to noise and its computational efficiency; these results were similar to those obtained using a measuring instrument commonly used in research laboratories (a commercially available digital lock-in amplifier (LIA)).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 192, 1 March 2014, Pages 334-340
نویسندگان
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