On-site rapid detection method for distinguishing gasoline marks

A detection method and gasoline technology, applied in material excitation analysis, complex mathematical operations, instruments, etc., can solve problems such as the influence of the correct rate of model classification, and achieve the effects of light weight, high sensitivity and fast analysis speed.

Pending Publication Date: 2021-01-05
SHANGHAI TIANKE CHEM INSPECTION +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The defect of this technical solution is: multiple models are used for step-by-step recognition, and different recognition type parameters are set, the classification accuracy of the latter model is easily affected by the previous model

Method used

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  • On-site rapid detection method for distinguishing gasoline marks
  • On-site rapid detection method for distinguishing gasoline marks
  • On-site rapid detection method for distinguishing gasoline marks

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Experimental program
Comparison scheme
Effect test

Embodiment

[0042] In the present embodiment, the on-the-spot rapid detection method of distinguishing gasoline brand name may further comprise the steps:

[0043] gasoline sample collection

[0044] Collect 70 gasoline samples of 92#, 95#, and 98# from the gasoline samples sampled in Jiangsu and Shanghai as the training set, including 30 samples of 92# gasoline, 30 samples of 95# gasoline, and 10 samples of 98# gasoline.

[0045] (2) Collect Raman signals of all gasoline samples

[0046]Use the BWS415-785S portable Raman spectrometer to collect the Raman signals of all gasoline samples, and the spectra of all gasoline samples are as follows figure 1 As shown, the spectral measurement range is 173.69~3200.86cm -1 , the wavelength of the excitation light is 785nm, and the abscissa is the Raman shift (cm -1 ), corresponding to the measurement range parameters of the Raman spectrometer, and the ordinate is the Raman intensity after deducting the dark current.

[0047] Draw a certain amou...

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Abstract

The invention relates to an on-site rapid detection method for distinguishing gasoline marks. The method comprises the following steps: collecting a plurality of gasoline samples as a training set; randomly dividing the training set into a correction set and a prediction set; measuring Raman signals of the gasoline samples by using a portable Raman spectrometer to obtain Raman spectra and corresponding Raman spectrum data of the gasoline samples; carrying out baseline correction on the Raman spectrograms of all the samples; based on the corrected Raman spectrum data, establishing a gasoline grade model by using a PLSDA algorithm, and predicting a prediction set sample which does not participate in modeling. Compared with the prior art, the method disclosed in the invention is advantageousin that the method is short in test time and high in accuracy, the used instrument is small and exquisite, convenient to carry and simple to operate, and can well meet the requirement of on-site rapiddetection, thereby providing convenience for users.

Description

technical field [0001] The invention relates to the field of oil product detection, in particular to an on-site rapid detection method for distinguishing gasoline grades. Background technique [0002] Gasoline is the most important and most used engine fuel in my country and even in the world. It comes from petroleum and is obtained through petroleum fractionation or heavy distillation. It is inseparable from people's daily life and determines the convenience of people's travel. In recent years, a large number of cars have poured into the market, the daily consumption of gasoline has been increasing, and the number of gas stations has also gradually increased, which greatly facilitates the majority of car owners. [0003] According to relevant national regulations, gasoline should be divided into different grades according to the octane number. Currently, the grades of gasoline on the market mainly include 92#, 95#, 98#, etc., and the octane number of 92# gasoline should not...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/62G06F17/16G06F17/18G01N21/65
CPCG06F17/16G06F17/18G01N21/65G06F18/24G06F18/214
Inventor 范宾薛晓康商照聪张小沁丁怡曼董学胜舒耀皋
Owner SHANGHAI TIANKE CHEM INSPECTION
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