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Fluorescence signal is a weak and shorter lifetime signal which is easy to be drowned out by noise. Accordingly, there is a need for a localized, fast real-time signal processing method. This article is threshold de-noising of fluorescence signal based on multi-resolution analysis of wavelet transform properties, and in conjunction with high-speed, real-time signal processing means of DSP. A series...
This paper presents a method based on optical fiber coupling light powered type conversion probe sensor measurement scheme. Sensing probe uses optical fiber transmission 20 mw stable semiconductor laser to supply power, the laser given off by semiconductor laser is coherent light, which directional is a lot better than LED, and it greatly improves efficiency of the light source and optical coupling,...
Researched on a kind of photoelectric current transformer based on the Rogowski coil, it solved the electrical insulating problem between the high and low voltage sides using the optical fiber to transmit the pulse signal from the high-pressure side. The laser energy can meet the demand of electricity in high voltage side steadily. The V/F conversion of digital signal processing method makes the transmission...
By the two-fiber way to power for the probe in high voltage side and convey the pulse signal, the Rogowski coil photoelectric current transformer is constructed, solving the problem of electrical insulation between high and low voltage sides. The photoelectric conversion efficiency of optical fiber power supply may reach 50%, which can meet the demand of electricity utilization steadily. The digital...
Dimensionality reduction algorithms, which aim to select a small set of efficient and discriminant features. In this paper, a new manifold learning algorithm, called Uncorrelated Locality Information Projection (ULIP), to identify the underlying manifold structure of a data set. ULIP considers both the between-class scatter and the within-class scatter in the processing of manifold learning. Equivalently,...
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