A multi-angle arc light intensity collection method based on ccd camera

A collection method, arc light technology, applied in the direction of auxiliary welding equipment, welding equipment, manufacturing tools, etc., can solve the problems of arc instability, measurement result error, no guaranteed time resolution, etc., to achieve guaranteed time and space resolution, good time, and reduce the effect of high cost

Active Publication Date: 2019-09-03
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method does not guarantee a good time resolution, resulting in large errors in the measurement results due to the instability of the arc

Method used

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  • A multi-angle arc light intensity collection method based on ccd camera
  • A multi-angle arc light intensity collection method based on ccd camera

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Such as figure 1 The embodiment of the present invention provides a multi-angle arc light intensity acquisition method based on a CCD camera, which includes the following steps when performing arc narrow-band spectral image acquisition:

[0036] Step S1: Fix the mirror group (4, 5) and the CCD camera (3) on the welding gun (1) through the connecting plate (7).

[0037] Step S2, adjust the height of the mirror group (4, 5) and the CCD camera (3), so that the lens axis of the mirror group (4, 5) and the arc CCD camera (3) are on the same plane.

[0038] Step S3, the slide rail (6) is placed in the direction of the observation angle with the arc (2) as the center, and the distance between the mirror group (4) and the arc (2) is adjusted on the slide rail (6) so that the two most mirrors The included angle α does not exceed the angle of view of the camera lens (3).

[0039] Step S4, the light emitted from the arc position passes through the relay lens (5), the reflector (4), the ne...

Embodiment 2

[0042] Such as figure 2 The embodiment of the present invention provides a multi-angle arc light intensity acquisition method based on a CCD camera. When the arc is directly observed, the narrow-band filter (9) in front of the camera (3) lens is removed, so that in each group of light paths, After the arc light from various angles is emitted from the arc (2), it passes through the relay lens (5), the reflector (4), and the neutral light-reducing film (8) in turn. The experimental procedure is the same as that in Example 1, and finally the arc appears in the camera Images from all angles.

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PUM

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Abstract

The invention discloses a multi-angle electric arc light intensity collecting method based on a CCD camera. Arc plasma serves as a self-luminous observation object, according to the collecting method, under the condition that electric arc is not required to be rotated or a camera is not required to be moved, the reflecting mirror is used for collecting the arc light emitted by the reflecting mirror at an angle of 180 degrees, finally, a narrow-band light filter is used for selecting the light with the required wave band to enter the camera, arc narrow-band images at different angles are presented at different positions on a light sensing element of the camera, a light intensity distribution and collection of specific spectral lines at multiple angles are completed; and the relay lens performs secondary focusing on the electric arc, focusing distance of an industrial camera is shortened or prolonged to a certain extent so that the camera can be clearly imaged to the light of different optical paths under the same focal length, and the sizes of the arc images are the same. The method has the advantages that utilization rate of the light sensing element of the camera is greatly improved, good time resolution and good spatial resolution are obtained, and high cost of an existing multi-angle electric arc image acquisition system is greatly reduced.

Description

Technical field [0001] The invention belongs to the field of arc sensing measurement, and in particular relates to a multi-angle arc light intensity acquisition method based on a CCD camera. A reflector group is used to enable the camera to collect the band-pass spectral radiation emitted by the arc at multiple angles in one exposure, thereby improving the industry The utilization rate of the camera's photosensitive components ensures a good time and space resolution, and greatly saves measurement costs. Background technique [0002] Arc plasma has the characteristics of high temperature and concentrated energy, making it more and more widely used in industrial production. Wide application prospects require us to have a deeper understanding of this arc heat source. Whether it is the macroscopic morphological characteristics of the arc or the microscopic characteristics of the arc, there is a lot of information. Research on both will help to further improve the welding efficiency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K9/32B23K37/00
Inventor 蒋凡李元锋陈树君李诚
Owner BEIJING UNIV OF TECH
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