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Cylindrical diameter measuring device and method

A diameter measurement and cylinder technology, applied in the field of cylinder diameter measurement devices, can solve problems such as high cost, inability to measure cylinders, and complex large-range size measurement systems, and achieve the effect of simple mechanism and simple design principle

Active Publication Date: 2019-08-06
BAOSHAN IRON & STEEL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Usually large-scale dimension measurement systems are complex and costly
[0004] Chinese patent documents with application numbers 201410751963.5 and 201410454075.7 both disclose technical solutions for cylinder measurement, which use image sensors to directly image cylinders, and perform measurement and calculation through image processing, but none of the related schemes can be used for cylinders with varying sizes and spaces measurement, there are some technical flaws

Method used

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  • Cylindrical diameter measuring device and method
  • Cylindrical diameter measuring device and method
  • Cylindrical diameter measuring device and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] Example 1: Object Boundary Position Tracking Application

[0051] as attached figure 2 As shown, the boundary of the measured object changes, such as figure 2 When the object boundary changes from position B to position B ', then mobile device 7 drives the pentaprism light turning optical component (that is, the pentaprism optical lens 1 with the label 5) to move accordingly in position (the pentaprism indicated by the dotted line in the figure The optical lens indicates the position after the movement), from the coverage B position to the coverage B' position, that is, the light source always covers the boundary of the measured object 9 macroscopically, and the projection is mapped on the light curtain 10, using an image sensor 11 (such as an industrial camera) to obtain the position of the shadow boundary on the light curtain 10, and then the specific boundary accuracy is obtained through image boundary calculation, and finally achieves the purpose of boundary trac...

Embodiment 2

[0052] Embodiment 2: Application of object one-dimensional size measurement

[0053] Embodiment 1 describes the design and application of the format-variable parallel light source to track the boundary of objects. In practical applications, it is necessary to track two boundaries of one-dimensional size at the same time, that is, to complete the size measurement function, such as measuring the width of steel plates, pipes, rods and wires. diameter etc. The specific implementation is attached image 3 As shown, the two boundaries of the measured object 9 are changed, such as one boundary of the object is changed from position A to position A', and the other boundary is changed from position B to position B', then the moving labels 7 and 8 The moving device I and the moving device II, and then drive the pentaprism light turning optical components to move correspondingly (the pentaprism drawn by the dotted line in the figure indicates the position of the moved pentaprism), and t...

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Abstract

The invention provides a cylindrical diameter measuring device and method. The device comprises a light source, a reflection / transmission mirror, a reflecting mirror and two optical reflection modules. After a parallel beam emitted by the light source passes through the reflection / transmission mirror, reflected light and transmitted light are formed; and the two optical reflection modules change directions of the light and then the processed light is projected onto edges of the two sides of a measured cylinder. All optical reflection modules are provided with driving devices respectively for driving the modules to make reciprocating displacement. In addition, the device also includes a light curtain for receiving or displaying edge projection of the measured cylinder after emitted light irradiation and an image acquisition device for acquiring and reading the edge projection.

Description

technical field [0001] The invention relates to the technical field of machine vision measurement, in particular to a cylindrical diameter measuring device and method. Background technique [0002] With the vigorous development of microelectronics technology, computing technology and image processing technology, machine vision inspection technology has gradually moved from experiment to practical application stage. It has the advantages of high detection efficiency and good detection consistency, so that it has great advantages in replacing human beings or reducing manual labor intensity in some applications. The machine vision inspection system is an integration of optical, electromechanical systems, and a reasonable system design can obtain more stable working results. [0003] In industrial applications, there are many requirements for one-dimensional measurement of cylinder diameters, such as the measurement of large-diameter workpieces such as steel pipes and circular ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/08
CPCG01B11/08
Inventor 杨水山何永辉梁爽石桂芬宗德祥彭铁根
Owner BAOSHAN IRON & STEEL CO LTD