Test system and test method for jointly identifying oil types through terahertz waves and lasers

Abstract

The invention provides a test system and a test method for jointly identifying oil types through terahertz waves and lasers. The system comprises a terahertz single-station time domain spectroscopy device, a laser-induced fluorescence spectroscopy device, a sample holding device and a sample detection device; the terahertz single-station time domain spectroscopy device and the laser-induced fluorescence spectroscopy device share the same laser source. The terahertz single-station time domain spectroscopy device directly radiates the terahertz waves, subjected to beam expansion by a beam expander, to a to-be-tested sample, the laser-induced fluorescence spectroscopy device directly irradiates the to-be-tested sample to generate a terahertz time domain signal and a fluorescence spectrum of the to-be-tested sample, and the sample detection device is used for detecting the to-be-tested sample according to the terahertz time domain spectral signal and the fluorescence spectrum. The detection and identification system can be used for testing and identification of all oil products, and has the advantages of comprehensiveness of identification types, high accuracy, high identification speed and low test cost, thereby being an oil product detection and identification product with an application prospect.

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...

AI Technical Summary

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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