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Detecting system for cylinder inner wall based on structured light

A detection system and structured light technology, applied in the field of three-dimensional detection, can solve problems such as limited cylinders, achieve the effect of improved accuracy and simple method

Inactive Publication Date: 2018-09-14
ARMY ENG UNIV OF PLA
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  • Abstract
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  • Application Information

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Problems solved by technology

Due to the limited space inside the cylinder, the stereo vision method is not suitable for this test situation

Method used

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  • Detecting system for cylinder inner wall based on structured light
  • Detecting system for cylinder inner wall based on structured light
  • Detecting system for cylinder inner wall based on structured light

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Embodiment Construction

[0022] The technical solution of this patent will be further described in detail below in conjunction with specific embodiments.

[0023] see Figure 1-3 , a cylindrical inner wall detection system based on structured light, including a computer, a CCD camera 1, a structured light controller 2, a reflector 3 and an installation sleeve 4, the top of the installation sleeve 4 is provided with an opening 41, and the inside of the installation sleeve 4 From left to right, a CCD camera 1, a reflector 3 and a structured light controller 2 are arranged in turn, and the CCD camera 1, the structured light controller 2 and the reflector 3 are all fixedly installed inside the installation sleeve 4, wherein the reflector 3 includes the first A mirror 31 and a second mirror 32, the opening 41 is located between the first mirror 31 and the second mirror 32, the CCD camera 1 is electrically connected to the computer, and the structured light controller 3 is responsible for providing the stru...

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Abstract

The invention discloses a detecting system for a cylinder inner wall based on structured light. The detecting system comprises a computer, a CCD camera, a structured light controller, a reflecting mirror and a mounting sleeve. The detecting system is characterized in that the structured light controller, a reflecting mirror center and the CCD camera are all arranged on the central axis of the mounting sleeve; the distance between the structured light controller and the CCD camera is a specific value; structured light irradiates the surface of the cylinder inner wall to generate diffuse reflection; reflected light spots and an object in a current view field are jointly formed on the CCD camera; the light spots are imaged as one high-brightness line segment, and other backgrounds are imagedas data with lower brightness; an optical signal can be converted into an electrical signal; the high-brightness line segment formed through light spot mapping is acquired by a computer, the mass center of the high-brightness line segment is calculated, and further the to-be-detected distance is calculated. The system has main advantages that detection precision of the surface of the cylinder inner wall is significantly improved; meanwhile, the detecting system can be applied to detection of inner walls of deep hole parts; a method is simple and convenient.

Description

technical field [0001] The invention relates to the field of three-dimensional detection of real objects, in particular to a cylinder inner wall detection system based on structured light. Background technique [0002] At present, the three-dimensional detection technology for physical objects can be divided into two categories: contact measurement and non-contact measurement according to whether the measurement sensor is in contact with the surface of the object. [0003] In touch measurement, the three-coordinate measuring machine is the most representative. The basic operation of the three-coordinate measuring machine is to measure the "point". The probe on the three-coordinate measuring machine touches the surface of the object to be measured and moves along the surface. Movement; during the movement, the probe moves up and down with the surface fluctuations of the measured object, and continuously records the position of each point; then calculates the distance and posi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/22
Inventor 邵新杰丁超宋彬黄富瑜刘金华王怀光刘干
Owner ARMY ENG UNIV OF PLA
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