Method and device for measuring section contour of sealing strip of vehicle based on image matching

Abstract

The invention discloses a method and a device for measuring the section contour of a sealing strip of a vehicle in the technical field of automatic measurement. The device comprises an image acquiring system, an image preprocessing module, an image registering module and an error detecting module, wherein the image acquiring system is connected with the image preprocessing module for transmitting a section image of the sealing strip; the image preprocessing module is connected with the image registering module for transmitting a section contour chain code; and the image registering module is connected with the error detecting module for transmitting registered contour information. In the device and the method, a sectional slice image of an adhesive tape is acquired by adopting an industrial camera, the section contour of the sealed strip is acquired by processing the image, and the acquired contour is matched with a vehicle standard CAD image contour through data processing so that a specific error value at a specified contour segment of the sealed strip of the vehicle is accurately given; and therefore, rapid non-contact measurement for the section contour of the sealing strip of the vehicle is realized. The method has the advantages of rapidness and accuracy.

Description

technical field [0001] The invention relates to a device and method in the technical field of automatic measurement, in particular to a device and method for measuring the cross-sectional profile of an automobile weather strip based on image matching. Background technique [0002] The sealing strip is a rubber and plastic product that uses rubber or various plastics as raw materials and plays various sealing functions in real life. Sealing strips are widely used in the sealing of doors and windows, in the fields of automobiles, ships and industrial machinery. In recent years, with the rapid development of automobiles, people have higher and higher requirements for the quality of sealing strips. The production process of traditional automotive sealing strips includes raw material heating, vulcanization, mixing ingredients, cutting, cooling, etc. Since the quality of raw materials for automotive sealing strips, production design process, and the mixing ratio of ingredients a...

AI Technical Summary

Problems solved by technology

The specific value of the profile error of the sealing strip is not given. At the same time, if the cross-sectional size of the produced sealing strip is too small, it cannot be detected.

It should be pointed out that not all profile curve segments of general automotive sealing strips have high precision requirements, and the accuracy grade requirements for curve segments with error requirements for the same product may also be inconsistent. Existing technologies can only The measurement result of the entire rubber strip is given, and the specified contour curve segment cannot be measured, and the specific error value at the corresponding curve segment is not given

Images