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Cylinder chromatographic method based on distributed sensing

A distributed and cylindrical technology, applied in the field of cylindrical tomography based on distributed sensing, to solve the problem of test accuracy and real-time performance, and eliminate the effect of imaging error

Inactive Publication Date: 2011-02-09
NANCHANG HANGKONG UNIVERSITY
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method of cylindrical tomography based on distributed sensing to solve the problems in the acquisition of the existing emission spectrum tomography data, and combined with the cylindrical tomography inversion algorithm, the three-dimensional physical properties of the object to be measured can be obtained. Parametric distribution

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Embodiment Construction

[0008] Such as figure 1 As shown, the present invention is achieved in this way, the object to be tested 1 has infrared radiation in all directions of the outer space, and the center of the test object is used as a reference to make a cylindrical surface 2 with a certain radius and height, and the selection of the cylindrical surface includes the test object. Divide the cylindrical surface equidistantly in the axial direction to obtain M parallel circular planes 3 , and the distance between adjacent circular planes depends on the required three-dimensional test accuracy requirements. The higher the accuracy, the smaller the distance between the circular planes should be to ensure the spatial resolution. Then carry out N equal divisions with the circumference of each circle to obtain N equal division points, and these N equal division points 4 are opposite to the circle center 6 through the collimator 5 to limit the transmission of infrared radiation in a straight line. There...

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Abstract

The invention relates to a cylinder chromatographic method based on distributed sensing, which is characterized in that infrared radiation exists in a testing object along all space directions, the center of the testing object is used as a standard to make a cylindrical surface which comprises the testing object, the cylindrical surface is axially divided in equal distance to obtain parallel round planes with the number of M, the distance between two adjacent round planes depends on the requirements of three-dimensional testing precision, and the higher the accuracy is, the shorter distance between the round surfaces is. The invention has the advantages that a multi-point infrared photoelectric sensor on the cylindrical surface is combined with a collimator to obtain the chromatographic data of the cylindrical surface of the object to be tested in multiple directions instantly, the imaging errors of non-parallel rays are eliminated, a chromatographic inversion algorithm of the cylindrical surface is used for reconstructing the distribution of a three-dimensional flow field, and the problems of chromatographic testing accuracy and real-time performance for an infrared emission spectrum is solved.

Description

technical field [0001] The invention relates to a column chromatography method, in particular to a column chromatography method based on distributed sensing. Background technique [0002] Emission spectrum tomography is a non-destructive testing technique that uses the radiation information of the target to be measured in all directions in space to invert the distribution of the three-dimensional physical parameters of the target. Emission spectrum optical tomography has a relatively simple optical path and is not easily affected by the external environment. There are two data acquisition methods: one is based on scanning, and the other is based on area array sensors. The scan-based data acquisition method needs to spend a certain amount of time to scan, so it cannot meet the real-time requirements of the test. Although the data acquisition method based on the area array sensor can meet the real-time requirements, it cannot meet the inversion conditions of parallel beam tom...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01J1/42G01J3/28
Inventor 万雄易江林万生鹏
Owner NANCHANG HANGKONG UNIVERSITY
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