Portable passive fluorescence system for identifying oil types of oil films

Abstract

The invention discloses a portable passive fluorescence system for identifying oil types of oil films. The system comprises a hemispherical special sample pool. The hemispherical special sample pool comprises a round base located at the bottom and a hemispherical top cover, and the hemispherical top cover is detachably connected with the round base. The center of the round base is fixedly connected with a cylindrical quartz cuvette for placing an oil sample. The hemispherical top cover is provided with an arc-shaped opening with the length being 1 / 4 of a hemispherical arc. The outer side of the arc-shaped opening is provided with an electric arc-shaped sliding rail, the electric arc-shaped sliding rail is connected with a sliding block, and the electric arc-shaped sliding rail controls the movement position of the sliding block. A circular opening is formed in the center of the sliding block, and a first condensing lens and a short-wave-pass optical filter which are used for transmitting sunlight are installed on the circular opening. An arc-shaped baffle is arranged at the bottom of the sliding block. An opening is formed in the side face of the hemispherical top cover, a second condensing lens and a long-wave-pass optical filter are installed on the opening, and an optical fiber of an optical fiber spectrometer is connected in the opening.

Description

technical field [0001] The invention relates to the technical field of oil film type identification, in particular to a portable passive fluorescence system for oil film type identification. Background technique [0002] Currently, methods for oil film identification mainly include chemical gas chromatography, laser-induced oil fluorescence, and visible light remote sensing. Chemical gas chromatography has high accuracy, but limited by instruments and equipment, it is not time-effective and difficult to apply on-site; visible light remote sensing has a large range and good time-effectiveness, and can be detected on-site, but the recognition accuracy is relatively low. The traditional laser-induced oil fluorescence method has the advantages of high accuracy and on-site identification. However, it adopts an active excitation method and requires at least one laser light source. Limited by the size, power supply and cooling requirements of the laser light source, it is suitabl...

AI Technical Summary

Problems solved by technology

Limited by the size, power supply and cooling requirements of the laser light source, it is suitable for fixed detection, and the portability is not high

Moreover, during the day when the sunlight is strong, the fluorescence excited by the laser will be interfered by the sunlight and the fluorescence excited by the sunlight, and the recognition accuracy will be reduced.

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