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A visual detection device

A technology of a visual detection device and an imaging device, which is applied in the detection field, can solve the problems of limited detection range, increased system cost, and inability to achieve a great impact on the detection range, so as to avoid changes in detection distance and eliminate the problem of remote contours. effect of influence

Inactive Publication Date: 2016-08-24
王申
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the technical characteristics of the telecentric lens itself, its detection range cannot be greatly affected by its field of view, which limits its detection range to a certain extent
Telecentric lenses with a relatively large field of view are very expensive, greatly increasing system costs

Method used

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  • A visual detection device
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Embodiment Construction

[0021] In order to solve the problems existing in the prior art, the embodiment of the present invention provides a visual detection device, which uses the rough surface of the transparent plate to assist imaging, projects the object to be detected onto the rough surface of the transparent plate, and Obtaining the outline image of the measured object in the direction of the transparent surface can avoid the change of the detection distance caused by the height of the detected object itself, thereby eliminating the influence of the perspective phenomenon on object detection. The present invention will be described in detail below with specific embodiments and in conjunction with the accompanying drawings.

[0022] In the specific examples given below, a single-sided frosted plate glass is selected as a transparent plate with a rough surface, and transparent plates made of other materials such as crystal, resin, or plexiglass are also acceptable.

[0023] like figure 1 As shown...

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Abstract

The invention relates to detection technology, in particular to a visual detection device for detecting the outline of an object. A visual detection device, comprising: a transparent flat plate, a light source, an imaging device, and an image analysis device, wherein: one side of the transparent flat plate is a rough surface, and the light source is located on one side of the rough surface of the transparent flat plate and shines on the rough surface, the imaging device is located on the other side of the transparent plate; the imaging device obtains an image projected on the rough surface by the measured object located between the rough surface of the transparent plate and the light source, and The image analysis device analyzes the outline of the object under test according to the image.

Description

technical field [0001] The invention relates to detection technology, in particular to a visual detection device for detecting the outline of an object. Background technique [0002] In the field of industrial production, it is necessary to provide fast and efficient detection methods for industrial products. Especially in the fields of profile production and sheet metal processing, by measuring the profile of these products, the profile data obtained from the measurement can be used to further calculate the size of the profile, the graphics formed by the profile shape, etc. For example, by measuring the vertical section of the profile or the plane profile of the sheet metal part, the detection of parameters such as size and position can be completed, so that it can be judged whether the produced profile or sheet metal part meets the design requirements. At the same time, whether there is a large error in measuring the sectional surface of the profile is also an important b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01B11/24
Inventor 王申王文广
Owner 王申