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Data alignment method for horizontal quantitative reciprocating scanning of paper

A technology of reciprocating scanning and scanning data, which is applied in the direction of instruments, character and pattern recognition, computer components, etc., and can solve problems that affect the effect of lateral quantitative control and quantitative data deviation.

Active Publication Date: 2016-09-28
SHAANXI UNIV OF SCI & TECH
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Problems solved by technology

But in reality, due to the influence of factors such as mechanical precision and paper lateral drift, during the reciprocating operation of the scanning sensor, there may be a certain deviation in the position correspondence of the scanning data obtained in the two directions. If the average value is still simply taken, It may cause a large deviation in the quantitative data at a certain position in the lateral direction of the paper, which will affect the final lateral quantitative control effect

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  • Data alignment method for horizontal quantitative reciprocating scanning of paper
  • Data alignment method for horizontal quantitative reciprocating scanning of paper
  • Data alignment method for horizontal quantitative reciprocating scanning of paper

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Embodiment Construction

[0055] The present invention will be described in further detail below in conjunction with the accompanying drawings:

[0056] The scanning sensor reciprocates once along the lateral direction of the paper, and the quantitative scanning data curve obtained from the driving side to the operating side is as follows figure 1 As shown, the quantitative scan data curve obtained from the operation side to the transmission side is as follows figure 2 As shown, and recorded as N-dimensional array bwx, array bwy, where N is a non-zero positive integer, representing the number of quantitative scan data points running from the transmission side to the operation side or from the operation side to the transmission side, in the array bwx and array bwy The elements of are represented as bwx(i) and bwy(i), where i is a non-zero positive integer, i: 1, 2,..., N;

[0057] Use formula Calculate the correlation coefficient of the quantitative scanning data obtained from the transmission side to the...

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Abstract

The invention discloses a data alignment method for horizontal quantitative reciprocating scanning of a piece of paper. The method is mainly used for alignment of horizontal quantitative reciprocating scanning data during the horizontal quantitative controlling process of the paper in a paper manufacturing industry. The method is characterized in that an association function having nothing to do with factors like the mechanical precision and a horizontal drift of a piece of paper is employed; according to different moving directions of a quantitative scanning sensor, horizontal quantitative data are divided into ones with two kinds of directions from a driving side to an operating side and from the operating side to the driving side; recording is carried out to obtain different arrays; an association coefficient between data obtained in two directions is detected; translation of the data obtained in one direction to the left or right is carried out and an association coefficient between the data after translation and the data obtained in the other direction is detected; and according to the association coefficient, alignment information is determined.

Description

Technical field [0001] The invention belongs to the field of light industry technology engineering, and specifically relates to a method for aligning paper horizontal quantitative reciprocating scanning data. Background technique [0002] In the paper industry, the basis weight, moisture content, and thickness of paper are important technical indicators that reflect the quality of paper. Among them, the basis weight of paper is particularly important. It is used to characterize the weight of paper per unit area and is an important content of paper quality control. The goal of the control is to keep the basis weight of the paper web uniform in the running direction of the paper machine (longitudinal) and perpendicular to the running direction of the paper machine (transverse). Longitudinal quantitative fluctuations are mainly attributed to changes in sizing concentration and sizing flow, while horizontal quantitative fluctuations are mainly caused by paper machine equipment (such ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/32
CPCG06V10/242
Inventor 刘文波汤伟
Owner SHAANXI UNIV OF SCI & TECH
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