Test system and method for joint identification of oil types using terahertz and laser

Abstract

The invention provides a testing system and method for jointly identifying oil types using terahertz and laser, the system includes: a terahertz single-station time-domain spectroscopy device, a laser-induced fluorescence spectroscopy device, a sample placement device, and a sample detection device; The Hertz single-station time domain spectroscopy device and the laser-induced fluorescence spectroscopy device use a laser source together. The laser light is directly irradiated on the sample to be tested to generate a terahertz time-domain signal and a fluorescence spectrum of the sample to be tested, and the sample detection device is used to detect the sample to be tested according to the terahertz time-domain spectrum signal and the fluorescence spectrum. The detection and recognition system proposed by the invention can be used for the test and recognition of all oil products, has the characteristics of comprehensive recognition types, high accuracy, fast recognition speed, and low test cost, and is an oil product detection and recognition product with application prospects.

Description

technical field [0001] The invention relates to the technical field of electromagnetic and laser scattering testing, in particular to a testing system and method for jointly identifying oil types by using terahertz and laser. Background technique [0002] In the development of economy and society, the detection and identification of oil products has played a vital role in the cleaning of marine oil pollution, crude oil extraction, and food safety. At present, the main detection and identification technology is laser-induced fluorescence spectroscopy. The use of terahertz time-domain spectroscopy to identify oil types has also carried out basic research in the laboratory, but the two detection technologies have their own advantages and disadvantages. [0003] Laser-induced fluorescence spectroscopy technology uses different brands or different types of oils of the same brand to contain different fluorophores. After being excited, their fluorescence spectra will have differen...

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Problems solved by technology

[0007] The purpose of the present invention is to provide a testing system and method that uses terahertz and laser to jointly identify oil types, so as to solve the problem of low accuracy and stability of oil identification and detection in the prior art and the limitation of a single technology. The invention is based on the terahertz single-station scattering measurement mechanism, and uses terahertz time-domain spectroscopy combined with laser-induced fluorescence spectroscopy to identify the type of oil testing system, so that more parameters of the oil can be obtained in one test, and can Identify a large number of different types of oil products, improving accuracy and speed

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