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Magnetic field demonstration method and device based on magnetic liquid and mixed reality

A magnetic liquid and mixed reality technology, which is applied in the field of popular science demonstration equipment and magnetic field teaching, can solve abstract difficulties and other problems, achieve good demonstration and enhance intuitive understanding

Active Publication Date: 2021-01-19
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the non-visibility of the magnetic field, how to understand the "invisible magnetic field" has abstract difficulties

Method used

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  • Magnetic field demonstration method and device based on magnetic liquid and mixed reality
  • Magnetic field demonstration method and device based on magnetic liquid and mixed reality
  • Magnetic field demonstration method and device based on magnetic liquid and mixed reality

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0034] In this embodiment, the method for distributing the magnetic field through the height and width of the magnetic liquid mountain includes the following steps:

[0035] s1. Shoot the image displayed by the magnetic liquid demonstration instrument; in this embodiment, a professional camera with a small depth of field is used to shoot, focusing on the mountain-like structure in the magnetic liquid of the demonstration instrument, and the area outside the depth of field is blurred, due to its depth of field It is very small, and a clear image with a small depth can be obtained, so the depth of field in the center of the mountain-like structure can be clearly presented in the picture, and other areas will become blurred, such as figure 2 Shown are captured images.

[0036] s2. Identify the "peaks" of the mountain-like structure in the image, and calculate the number of "peaks" and the height of each "peak"; the specific implementation method is: first smooth and denoise the ...

Embodiment example 2

[0042] The magnetic field distribution method in this embodiment includes the following steps:

[0043] s1. Perform grayscale conversion on the image captured by the small depth-of-field camera to obtain a grayscale image;

[0044]s2. Perform boundary recognition on the grayscale image to obtain the number k of "peaks"; use the difference algorithm to operate from left to right, and determine the pixel point whose difference value changes from positive to negative is the peak, thus obtaining the number of "peaks" and peak High, the pixels that change from negative to positive are peaks and valleys. Calculate the peak height from left to right as h 1 ,h 2 ,...,h i ,...,h k ; and the width of the "peak" from left to right is d 1 , d 2 ,...,d i ,...,d k . The distance between the two peaks and valleys of each "peak" is the width of the "peak", and the width of the two extreme "peaks" is the distance between the starting point and the valley on the other side.

[0045] s...

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Abstract

The invention discloses a magnetic field demonstration method and device based on magnetic liquid and mixed reality technology, wherein the method includes the following steps: s1. taking an image displayed by a magnetic liquid demonstration instrument; s2. " to identify, and calculate the number of "peaks" and the height of each "peak"; s3. assign the magnetic field strength to the area where each "mountain" is located, so that the number of magnetic field lines in this area accounts for the total number of magnetic field lines The ratio of the quantity is consistent with the ratio of the height of the "mountain" to the total height of the "mountain"; s4. After superimposing the magnetic lines of induction and the original image, demonstrate through the display; the device includes a magnetic liquid demonstrator, a small depth of field camera, Host computer and display; the present invention uses mixed reality technology to realize the visual display of magnetic field distribution combined with the phase transition form of magnetic liquid, so as to realize a good demonstration of magnetic field distribution.

Description

technical field [0001] The invention relates to a magnetic field teaching and popular science demonstration instrument, in particular to a display method and instrument for the phase transition characteristics of magnetic liquid and the distribution characteristics of magnetic induction lines. Background technique [0002] Natural magnets have been widely used since the compass. In 1820, the Danish physicist Oersted discovered that a energized wire can deflect a small magnetic needle, thus discovering the magnetic effect of current, that is, a magnetic field can be excited around a energized wire. In 1831, Faraday discovered that when the conductor in the closed circuit cuts the magnetic induction line in the magnetic field, an induced current will be generated in the closed circuit, thus discovering and perfecting the interconnection and transformation relationship between magnetism and electricity. However, due to the non-visibility of the magnetic field, how to understan...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T19/00G06K9/00G06K9/46
CPCG06T19/006G06V20/00G06V10/44
Inventor 谢磊李兵廖昌荣张红辉张祥
Owner CHONGQING UNIV
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