Rotary opening adjusting area measuring device based on visual inspection

Abstract

The invention discloses a rotary opening adjustment area measuring device based on visual inspection, and belongs to the technical field of machine vision. The device comprises a visual platform mechanism, an image acquisition mechanism, a control mechanism and an upper computer, the visual platform mechanism is used for installing the image acquisition mechanism and a tested product, and the image acquisition mechanism is used for photographing the tested product in real time; the control mechanism is used for transmitting picture information between the image acquisition mechanism and the upper computer, feeding back the valve port state of the tested product, measuring and processing the picture information and storing a processing result in a local database; in the measurement processing process, a sub-pixel positioning technology is adopted to improve the position precision of the valve port contour, and finally the valve port area is calculated by using the geometric property of the valve port shape. According to the invention, a high-precision measurement task can be executed in a non-contact mode, and the method is suitable for a measured object with an irregular shape.

Description

technical field [0001] The invention belongs to the technical field of machine vision, and in particular relates to a measuring device for adjusting the area of ​​a rotating opening based on vision detection. Background technique [0002] During the assembly process of a key component of a solid engine, a double-circle staggered rotation opening area detection is involved to control the flow of gas. The structure of this place plays a decisive role in the performance of the engine. With the development of manufacturing technology and measurement technology, there are now a large number of measuring instruments and measurement methods for area measurement, but because the design concept is contact positioning and the contact surface needs to be a regular shape that can be fitted, conventional measurement technology is difficult to apply to the measurement task for the part. The existing mature visual inspection technology can be applied to the area measurement of the rotatin...

AI Technical Summary

Problems solved by technology

With the development of manufacturing technology and measurement technology, there are now a large number of measuring instruments and measurement methods for area measurement, but because the design concept is contact positioning and the contact surface needs to be a regular shape that can be fitted, conventional measurement technology is difficult to apply to the measurement task for the part

The existing mature visual inspection technology can be applied to the area measurement of the rotating opening, but the theoretical area is less than 150mm 2 At the same time, it is difficult to guarantee the measurement accuracy of ±3%. At the same time, the measurement part of this part is made of ceramic matrix composite material, and the material itself has many defects such as pores and burrs, which will have a certain impact on the accuracy of visual measurement.

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