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US 2023/0267631 A1Published application
Method and device for monitoring the shape of hard-to-reach components
AssigneeTurboscan, LLC.
InventorBoris Anatolyevich CHICHIGIN
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AssigneeTurboscan, LLC.
InventorBoris Anatolyevich CHICHIGIN
Estimating the term…
The group of inventions relates to measuring technology, in particular to methods for inspection of the shape of hard-to-reach parts, and can be used in power engineering, transport, mechanical engineering and other fields of technology to measure the geometric parameters of a part. The technical result of the invention as claimed is to increase the accuracy, reliability and performance of measurements related to determining the shape and defects of parts installed in cavities, as well as the shape of the internal cavities of products and surface discontinuities. The method for controlling the shape of hard-to-reach parts, including the stages of delivery inside the controlling equipment of the executive part of the control system equipped with a miniature stereo camera, for navigation across the path of which white light illumination is used, the white light illumination is transmitted through an optical fiber, after leaving which the given indicatrix of intensity is formed by means of the first lens. This is followed by the stage of turning off or dimming the white light, followed by turning on the laser, which, by means of an optical fiber transmitting a laser stream passing through the second lens, forms a beam of rays, which, passing through a diffraction optical element, forms an image with small laser spots of intensity on the hard-to-reach surface of the part to obtain a stereo image of the hard-to-reach surface of the part. A three-dimensional hard-to-reach surface is restored, while laser intensity spots on a pair of flat images are used to automatically identify the same points of object on stereo images with a given degree of confidence. The inspection system consists of a miniature digital camera that forms a stereo image of the object under control, a white light illumination unit, a laser illuminator operating in pulsed or continuous mode, a handle placed on the articulation control panel, a PC for processing and displaying information, articulation cables, two lenses, DOE, a laser fiber, lighting fiber, power line and a video signal transmission line.
Method of inspection of the shape of hard-to-reach surface of part using an inspection system, including white light illuminating with white light source installed in the inspection system providing navigation across delivery path of an executive part of the inspection system, and delivery the equipment of the executive part of the control system to the hard-to-reach part, which is equipped with a miniature stereo camera, wherein white light radiation transmits through white light fiber optic, a first lens for the formation of a given radiation pattern of the object under control is provided at the output of the white light fiber, after delivery of the executive part of the control system, turn off or dim the white light is carried out and formation of laser radiation transmitted through the laser light stream optical fiber, wherein at the output of the laser light stream fiber a second lens ensuring the convergence of the laser flux, using a diffractive optical element located at the distance from the second lens to provide the given width of the laser light stream beam formation on hard-to-reach surface of part of the image with a small spots of laser intensity providing a stereo image of the hard-to-reach surface of part using miniature optical stereo camera, when projecting the laser image with small spots of intensity on the hard-to-reach surface of part, transmitting the stereo image obtained to the processing microcontroller unit, using data processing tools for microcontroller unit recover the three-dimensional hard-to-reach surfaces, while use the laser intensity spots on a pair of flat images in order to automatically identify the same points of objects in stereo images with a given degree of confidence.
A device for inspection of shape of hard-to-reach surface of part containing a measuring head attached to a flexible or rigid means of delivery, power and data transmission lines, and a white light optical fiber and a laser light stream optical fiber, wherein a controlled white light source is placed at the input of the white light optical fiber, a controlled laser radiation source is placed at the input of the laser beam optical fiber, a first lens is located at the output of the white light optical fiber, the first lens is placed in the measuring head and made with the possibility of forming a given radiation pattern of the object under control, a second lens is located at the output of the optical fiber, the second lens is placed in the measuring head and made with the possibility of ensuring the convergence of the laser stream, and a diffraction optical element located at a distance from the second lens, providing a given width of the laser light beam, made with the possibility of forming an image with small laser spots of intensity on the hard-to-reach surface of the part, a miniature optical stereo camera is also placed in the measuring head to provide a stereo image of the hard-to-reach surface of the part using a laser image with small laser intensity spots on the hard-to-reach surface of the part, and a processing microcontroller unit made with the possibility to restore a three-dimensional hard-to-reach surface from an image from the stereo camera using laser intensity spots on a pair of flat images for automatic identification of identical points in the object on stereo images with a given degree of confidence.
Method of inspection of the shape of surface of part using a control system, including light illuminating with light source installed in the control system providing navigation across delivery path of an executive part of the control system, and delivery the equipment of the executive part of the control system to the part, which is equipped with a miniature stereo camera, wherein light radiation transmits through fiber optic, lens are provided at the output of the white light fiber, including optionally for the formation of a given radiation pattern of the object under control, providing video of the surface of the part using a video camera, transmitting the resulting video to the processing microcontroller unit, capturing video using data processing tools of microcontroller, video stream are processed with the aim of identifying faces and surfaces, a matrix of projections are created, based on which the sequence in time or sequence in different positions of the executive part of the device is analyzed, finding of the 3D shape of the objects under control, variance analysis actual projections from the reference, the detection of defects, detection of parts according a given reference and variance analysis of the 3D shape of the reference.
A device for inspection of the shape of hard-to-reach surface of part containing a measuring head attached to a flexible or rigid means of delivery, power and data transmission lines, and a white light optical fiber, wherein a controlled white light source is placed at the input of the white light optical fiber, a lens is located at the output of the white light optical fiber, the lens is placed in the measuring head and made with the possibility of forming a given indicatrix of intensity of the object under inspection, a miniature optical camera is also placed in the measuring head to provide a video of the hard-to-reach surface of the part, and a processing microcontroller unit made with the possibility capturing video, processing video stream with the aim of identifying faces and surfaces, creation matrix of projections, based on which analyzing the sequence in time or sequence in different positions of the executive part of the device find of the 3D shape of the objects under control, variance analysis actual projections from the reference, the detect of defects, detect of parts according a given reference and variance analysis of the 3D shape of the reference.
Dependencies are inferred from the claim text.