Energy spectrum knowledge base application method applicable to elemental analysis
A technology of element analysis and application method, which is applied in the direction of material analysis, material analysis, and special data processing application using wave/particle radiation. It can solve problems such as elements that cannot be analyzed, materials that cannot be analyzed, and unknown elements that cannot be analyzed. simple effect
Active Publication Date: 2015-09-30
DANDONG DONGFANG MEASUREMENT&CONTROL TECHCO
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[0005] However, the disadvantages of this method are: unknown elements cannot be analyzed, and elements without a mathematical model cannot be analyzed; at the same time, materials whose element content is outside the coverage of the calibration sample cannot be analyzed; and each time the calibration sample is added, Regression processing is required
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[0027] The specific content of the present invention will be described in detail in conjunction with the accompanying drawings.
[0028] Step 1: When the real-time measured spectral shape needs to be analyzed, the measured spectral shape is first standardized, that is, the measured spectral shape transformation is corrected to have a consistent "energy-path" correspondence with each spectral shape in the spectral shape knowledge base and measure time;
[0029] Step 2: Perform peak-seeking processing on the transformed measured spectral shape, that is, use the peak-finding algorithm to confirm the number of peaks in the transformed measured spectral shape and the corresponding track position of each peak; There are many kinds of peak algorithms, which are well-known techniques by experienced people in the industry;
[0030] Step 3: Search for the similarity of each spectral shape in the spectral shape knowledge base. First, search for "consistent peak positions", that is, find...
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The invention discloses an energy spectrum knowledge base application method applicable to elemental analysis. Information including ingredients, contents and the like of elements in a tested material corresponding to new measurement spectral shapes is acquired by means of direct and effective comparison with various spectral shapes in a spectral shape knowledge base. The method includes: subjecting the spectral shapes to normalization, peak searching, treatment of peak position uniformity or similarity to find out reference spectral shapes of known element types and contents, ordering according to similarity, and selecting three spectral shapes highest in reference effect to carry out comparative analysis so as to acquire the information including ingredients, contents and the like of the elements in the tested material corresponding to the new measurement spectral shapes. The method has the advantages that the defect that an original calibration method requires linear regression or nonlinear regression of all known spectral shape data and corresponding element contents for each time is effectively avoided, the spectral shapes can be supplemented to the spectral shape knowledge base directly for each time, supplementation for the knowledge base during test is realized, and simplicity in operation is achieved.
Description
technical field [0001] The invention relates to a data processing technical method for elemental analysis, in particular to a data processing technical method for neutron activation elemental analysis. Background technique [0002] Building materials, coal, thermal power, metallurgy, mining and other industries need to analyze the element composition and content of bulk materials on the conveyor belt to guide production. As a main online elemental analysis instrument, the multi-element analyzer using neutron activation prompt gamma analysis technology can realize continuous analysis of bulk materials on the conveyor belt. [0003] At present, the analysis principle of this type of instrument is that neutrons are irradiated on the material and react with the nuclei of each element in the material. Different elements emit characteristic γ-rays with different energies and intensities. By detecting the energy of characteristic γ-rays, the types of elements are identified. The e...
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IPC IPC(8): G06F17/30G01N23/222
Inventor 张伟杨振龙尚庆敏尹德有龚亚林李岩峰宋青锋吴志强魏晓云佟超赵龙国家罡吕怀振杜国军杨学谦丛浩杰赵洪涛
Owner DANDONG DONGFANG MEASUREMENT&CONTROL TECHCO