CN111413343A - Infrared detection device and operation method thereof - Google Patents

Infrared detection device and operation method thereof Download PDF

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Publication number
CN111413343A
CN111413343A CN202010186888.8A CN202010186888A CN111413343A CN 111413343 A CN111413343 A CN 111413343A CN 202010186888 A CN202010186888 A CN 202010186888A CN 111413343 A CN111413343 A CN 111413343A
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Prior art keywords
roller
detection device
infrared detection
information
probe
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CN202010186888.8A
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Chinese (zh)
Inventor
汪子君
熊楠菲
王栋
万李涛
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University of Electronic Science and Technology of China
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University of Electronic Science and Technology of China
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Priority to CN202010186888.8A priority Critical patent/CN111413343A/en
Publication of CN111413343A publication Critical patent/CN111413343A/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B64—AIRCRAFT; AVIATION; COSMONAUTICS
    • B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
    • B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
    • B64F5/60—Testing or inspecting aircraft components or systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D21/00—Measuring or testing not otherwise provided for
    • G01D21/02—Measuring two or more variables by means not covered by a single other subclass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T17/00—Three dimensional [3D] modelling, e.g. data description of 3D objects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/8851—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges
    • G01N2021/8887—Scan or image signal processing specially adapted therefor, e.g. for scan signal adjustment, for detecting different kinds of defects, for compensating for structures, markings, edges based on image processing techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10048—Infrared image

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Theoretical Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Transportation (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Quality & Reliability (AREA)
  • Signal Processing (AREA)
  • Computer Graphics (AREA)
  • Geometry (AREA)
  • Software Systems (AREA)
  • Investigating Or Analyzing Materials Using Thermal Means (AREA)

Abstract

The invention discloses an infrared detection device and an operation method thereof, and relates to the field of nondestructive testing. The device comprises an image processing system and a plurality of identical splicing original documents, wherein the adjacent splicing original documents are connected through a hinge link body; due to the fact that the hinge is connected with the body, the infrared detection device has flexible structural characteristics. The splicing original comprises a supporting table, and a roller, a thermal excitation source, a probe, a displacement sensor, a gyroscope and a memory which are arranged on the supporting table; the roller is contacted with the surface of the tested piece. Therefore, the device and the operation method thereof provided by the invention can successfully complete the defect detection of the non-flat area and the three-dimensional imaging of the defect positioning when detecting the airplane, the aircraft and the spacecraft.

Description

Infrared detection device and operation method thereof
Technical Field
The invention relates to the field of nondestructive testing, in particular to an infrared detection device and an operation method thereof.
Background
The nondestructive testing is widely applied to the defect testing process of aerospace, and when a nondestructive testing device is used for testing airplanes, aircrafts and spacecrafts, T-shaped, L-shaped and U-shaped areas are inevitably encountered, and the areas are inconvenient to test due to the fact that the areas are uneven surfaces.
Disclosure of Invention
The invention aims to provide an infrared detection device and an operation method thereof, which can successfully complete the defect detection of a non-flat area and complete the three-dimensional imaging of defect positioning when detecting airplanes, aircrafts and spacecrafts.
In order to achieve the purpose, the invention provides the following scheme:
an infrared detection device comprises an image processing system and a plurality of identical splicing original documents, wherein the adjacent splicing original documents are connected through a hinge link body;
the splicing original comprises a supporting table, and a roller, a thermal excitation source, a probe, a displacement sensor, a gyroscope and a memory which are arranged on the supporting table;
the roller is used for sliding on the surface of the detected piece when the detected piece is detected;
the thermal excitation source is used for heating the surface of the tested piece;
the probe is used for acquiring thermal image information of the piece to be detected;
the displacement sensor is used for detecting displacement information of the roller;
the gyroscope is used for detecting angle information when the roller moves;
the memory is used for storing the thermal image information of the tested piece acquired by the probe, the displacement information acquired by the displacement sensor and the angle information acquired by the gyroscope;
the image processing system is connected with the memory; and the image processing system is used for splicing the acquired thermal image information of the measured piece according to the acquired displacement information and the acquired angle information so as to construct a three-dimensional structure chart of the measured piece.
Optionally, the roller is fixed on the support table through a support body.
Optionally, two rollers, namely a first roller and a second roller, are arranged on each support platform; the first roller and the second roller are correspondingly arranged at one end of the supporting platform.
Optionally, a first thermal excitation source, a probe and a second thermal excitation source are sequentially arranged on the center line of each support platform; wherein the first thermal excitation source is in a perpendicular relationship with the roller on the support table.
Optionally, the displacement sensor and the gyroscope are disposed on the roller.
Optionally, the infrared detection device further includes a controller; the controller is respectively connected with the thermal excitation source, the probe, the displacement sensor, the gyroscope, the memory and the image processing system;
the controller is used for controlling the thermal excitation source, the probe, the displacement sensor, the gyroscope and the memory to be turned on and off according to a control command issued by the image processing system, and controlling the memory to upload the stored thermal image information, displacement information and angle information of the tested piece to the image processing system.
Optionally, the infrared detection device further includes a power switch; the power switch is connected with the controller.
Optionally, the infrared detection device further comprises a display stand; the display stand is connected with the image processing system; the display stand is used for displaying a three-dimensional structure diagram of the tested piece.
A method of operating an infrared detection device, comprising:
determining the number of spliced original sheets according to the detection task, and splicing and assembling the infrared detection devices according to the number of the spliced original sheets; the splicing original comprises a supporting table, and a roller, a thermal excitation source, a probe, a displacement sensor, a gyroscope and a memory which are arranged on the supporting table;
the infrared detection device is paved on the surface of a tested piece so that the roller is in contact with the surface of the tested piece;
controlling the thermal excitation source to carry out thermal excitation on the surface of the tested piece, and controlling the probe to capture thermal image information of the tested piece after set time;
moving the roller, and recording displacement information and angle information of the roller;
and constructing a three-dimensional structure diagram of the measured piece according to the thermal image information of the measured piece, the displacement information and the angle information of the roller.
According to the specific embodiment provided by the invention, the invention discloses the following technical effects:
the invention provides an infrared detection device and an operation method thereof, wherein the infrared detection device is contacted with the surface of a detected piece by arranging a roller, and the flexible structure characteristic of the infrared detection device is realized by arranging a hinge connecting body, so that when an airplane, an aircraft and a spacecraft are detected, the defect detection of a non-flat area is smoothly finished, and meanwhile, the three-dimensional imaging of defect positioning is finished.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.
FIG. 1 is a top view of an infrared detection device of the present invention;
FIG. 2 is a side view of an infrared detection device of the present invention;
FIG. 3 is a signal transmission diagram of each component of the infrared detection device of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide an infrared detection device and an operation method thereof, which can successfully complete the defect detection of a non-flat area and complete the three-dimensional imaging of defect positioning when detecting airplanes, aircrafts and spacecrafts.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
The invention is realized in the principle that the infrared detection device provided by the invention is composed of a plurality of spliced structures, so the infrared detection device can complete the detection task requiring multiple degrees of freedom, and in addition, the infrared detection device is different from other detection modes in structure and needs to complete detection by a specific operation method.
As shown in fig. 1 and 2, the infrared detection device includes an image processing system and a plurality of identical splicing elements, and the adjacent splicing elements are connected by a hinge link. The infrared detection device has the advantages that the infrared detection device is connected through the hinge connecting body, so that the infrared detection device has the flexible structural characteristic, the hinge connecting body can enable the infrared detection device to rotate, and the hinge connecting body can enable the infrared detection device to cover the surface of a detected piece in a matching and splicing mode.
The splicing original paper comprises a supporting table, and a roller, a thermal excitation source, a probe, a displacement sensor, a gyroscope and a memory which are arranged on the supporting table. Wherein the content of the first and second substances,
the roller is used for sliding on the surface of the tested piece when the tested piece is detected, namely contacting with the surface of the tested piece when the tested piece is detected.
The thermal excitation source is used for heating the surface of the tested piece.
The probe is used for detecting the temperature information of the tested piece, namely the thermal image information of the tested piece.
The displacement sensor is used for detecting displacement information of the roller.
The gyroscope is used for detecting angle information when the roller moves and assisting in three-dimensional modeling.
The memory is used for storing the thermal image information of the tested piece acquired by the probe, the displacement information acquired by the displacement sensor and the angle information acquired by the gyroscope.
The image processing system is connected with the memory; and the image processing system is used for splicing the acquired thermal image information of the measured piece according to the acquired displacement information and the acquired angle information so as to construct a three-dimensional structure chart of the measured piece.
Preferably, the roller is fixed to the support table by a support.
Preferably, each support table is provided with two rollers, namely a first roller and a second roller; the first roller and the second roller are correspondingly arranged at one end of the supporting platform.
Preferentially, a first thermal excitation source, a probe and a second thermal excitation source are sequentially arranged on the center line of each supporting platform; the first thermal excitation source and the roller are in a vertical relation on the support table.
Preferably, the displacement sensor and the gyroscope are disposed on the wheel.
Preferably, the infrared detection device further comprises a controller, and the controller is respectively connected to the thermal excitation source, the probe, the displacement sensor, the gyroscope, the memory and the image processing system; the controller is used for controlling the thermal excitation source, the probe, the displacement sensor, the gyroscope and the memory to be turned on and off according to a control command issued by the image processing system, and controlling the memory to upload the stored thermal image information, displacement information and angle information of the tested piece to the image processing system.
Preferably, the infrared detection device further comprises a power switch; the power switch is connected with the controller. The controller provides power for the thermal excitation source, the probe, the displacement sensor, the gyroscope and the memory.
Preferably, the infrared detection device further comprises a display stand; the display stand is connected with the image processing system; the display stand is used for displaying a three-dimensional structure diagram of the tested piece.
Fig. 3 shows communication relationships among the respective devices. The operation method of the infrared detection device comprises the following steps:
firstly, selecting the number of spliced original papers according to a detection task, and then paving the spliced infrared detection device on the surface of a detected piece, wherein the infrared detection device is adaptive to the surface of the detected piece due to the flexible structure characteristic of the infrared detection device.
And secondly, controlling the working process of the infrared detection device by the controller, when the infrared detection device is paved on the surface of a detected piece, and the controller receives a working signal, thermally exciting the surface of the detected piece by a thermal excitation source on each component infrared detection device, and simultaneously capturing a surface temperature signal by a probe on the infrared detection device. Wherein the temperature signal is captured by the probe in the form of a thermal value and converted into a 2-dimensional infrared thermal image. The thermal excitation source heats the surface, namely a preheating process, and then the probe captures infrared image signals.
And particularly, when defect detection operation is carried out on T-shaped, U-shaped and L-shaped positions, the infrared detection device is always vertical to the displacement direction.
In addition, when the detection is started, the displacement sensor immediately detects and records displacement information, the gyroscope immediately records and detects angle change information, recorded displacement and angle information and an infrared image detected by the probe, and the infrared image is stored in the memory and transmitted to the image processing system; and the image processing system splices the images according to the displacement and angle information, performs three-dimensional composition and transmits the images to a workbench for three-dimensional display. In the detection process, the information of displacement change, initial angle and angle change is captured, and the infrared detection device is 'tiled' and attached to a detected piece, so that the image is cut according to the displacement distance according to the change of the displacement, and splicing can be completed according to the captured angle information.
By adopting the scheme, the detection of the defects can be smoothly finished in the non-flat area of the aviation aircraft, and the three-dimensional accurate positioning of the defects can be finished. The invention has reasonable structure, low cost and good use effect.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The principles and embodiments of the present invention have been described herein using specific examples, which are provided only to help understand the method and the core concept of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims (9)

1. An infrared detection device is characterized by comprising an image processing system and a plurality of identical splicing original documents, wherein the adjacent splicing original documents are connected through a hinge link body;
the splicing original comprises a supporting table, and a roller, a thermal excitation source, a probe, a displacement sensor, a gyroscope and a memory which are arranged on the supporting table;
the roller is used for sliding on the surface of the detected piece when the detected piece is detected;
the thermal excitation source is used for heating the surface of the tested piece;
the probe is used for acquiring thermal image information of the piece to be detected;
the displacement sensor is used for detecting displacement information of the roller;
the gyroscope is used for detecting angle information when the roller moves;
the memory is used for storing the thermal image information of the tested piece acquired by the probe, the displacement information acquired by the displacement sensor and the angle information acquired by the gyroscope;
the image processing system is connected with the memory; and the image processing system is used for splicing the acquired thermal image information of the measured piece according to the acquired displacement information and the acquired angle information so as to construct a three-dimensional structure chart of the measured piece.
2. An infrared detection device as claimed in claim 1, wherein said roller is fixed to said support table by a support.
3. An infrared detection device as claimed in claim 1, wherein each of said supporting tables is provided with two rollers, a first roller and a second roller; the first roller and the second roller are correspondingly arranged at one end of the supporting platform.
4. An infrared detection device as claimed in claim 1, wherein a first thermal excitation source, a probe and a second thermal excitation source are sequentially disposed on the centerline of each support table; wherein the first thermal excitation source is in a perpendicular relationship with the roller on the support table.
5. An infrared detection device as claimed in claim 1, wherein said displacement sensor and said gyroscope are provided on said wheel.
6. An infrared detection device as claimed in claim 1, characterized in that the infrared detection device further comprises a controller; the controller is respectively connected with the thermal excitation source, the probe, the displacement sensor, the gyroscope, the memory and the image processing system;
the controller is used for controlling the thermal excitation source, the probe, the displacement sensor, the gyroscope and the memory to be turned on and off according to a control command issued by the image processing system, and controlling the memory to upload the stored thermal image information, displacement information and angle information of the tested piece to the image processing system.
7. The infrared detection device as claimed in claim 6, further comprising a power switch; the power switch is connected with the controller.
8. An infrared detection device as claimed in claim 1, characterized in that the infrared detection device further comprises a display stand; the display stand is connected with the image processing system; the display stand is used for displaying a three-dimensional structure diagram of the tested piece.
9. A method of operating an infrared detection device, comprising:
determining the number of spliced original sheets according to the detection task, and splicing and assembling the infrared detection devices according to the number of the spliced original sheets; the splicing original comprises a supporting table, and a roller, a thermal excitation source, a probe, a displacement sensor, a gyroscope and a memory which are arranged on the supporting table;
the infrared detection device is paved on the surface of a tested piece so that the roller is in contact with the surface of the tested piece;
controlling the thermal excitation source to carry out thermal excitation on the surface of the tested piece, and controlling the probe to capture thermal image information of the tested piece after set time;
moving the roller, and recording displacement information and angle information of the roller;
and constructing a three-dimensional structure diagram of the measured piece according to the thermal image information of the measured piece, the displacement information and the angle information of the roller.
CN202010186888.8A 2020-03-17 2020-03-17 Infrared detection device and operation method thereof Pending CN111413343A (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060162456A1 (en) * 2005-01-24 2006-07-27 Kennedy James C Non-destructive stringer inspection apparatus and method
CN101003307A (en) * 2006-01-06 2007-07-25 株式会社东芝 Airplane body checking method and device
CN102636313A (en) * 2012-04-11 2012-08-15 浙江工业大学 Leakage source detecting device based on infrared thermal imaging processing
CN205049525U (en) * 2015-10-21 2016-02-24 江苏融庆科技有限公司 Self -adaptation ultrasonic transducer module
CN106996944A (en) * 2017-05-25 2017-08-01 电子科技大学 A kind of subsurface defect Shape Reconstruction method in thermal imaging detection
CN108802173A (en) * 2018-06-21 2018-11-13 中车青岛四方机车车辆股份有限公司 A kind of device and method to carrying out automation non-destructive testing with paint crossbeam
CN110836909A (en) * 2018-08-17 2020-02-25 波音公司 Infrared thermal imaging inspection system and method for modular composite structures

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060162456A1 (en) * 2005-01-24 2006-07-27 Kennedy James C Non-destructive stringer inspection apparatus and method
CN101003307A (en) * 2006-01-06 2007-07-25 株式会社东芝 Airplane body checking method and device
CN102636313A (en) * 2012-04-11 2012-08-15 浙江工业大学 Leakage source detecting device based on infrared thermal imaging processing
CN205049525U (en) * 2015-10-21 2016-02-24 江苏融庆科技有限公司 Self -adaptation ultrasonic transducer module
CN106996944A (en) * 2017-05-25 2017-08-01 电子科技大学 A kind of subsurface defect Shape Reconstruction method in thermal imaging detection
CN108802173A (en) * 2018-06-21 2018-11-13 中车青岛四方机车车辆股份有限公司 A kind of device and method to carrying out automation non-destructive testing with paint crossbeam
CN110836909A (en) * 2018-08-17 2020-02-25 波音公司 Infrared thermal imaging inspection system and method for modular composite structures

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