CN104634270B - A kind of deformation detecting device and its method for super-pressure balloon - Google Patents
A kind of deformation detecting device and its method for super-pressure balloon Download PDFInfo
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- CN104634270B CN104634270B CN201510069561.1A CN201510069561A CN104634270B CN 104634270 B CN104634270 B CN 104634270B CN 201510069561 A CN201510069561 A CN 201510069561A CN 104634270 B CN104634270 B CN 104634270B
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Abstract
The invention provides a kind of deformation detecting device and its method for super-pressure balloon, including：Vacuum tank, toss module, image-forming module and data processing module；Described deformation detecting device in vacuum tank by setting toss module, super-pressure balloon is thrown to aerial, move up to super-pressure balloon and detection of taking pictures is carried out in the field range of image-forming module, overcome using existing spheroid detection technique when detecting yielding balloon, secondary deformation error is produced due to the influence of examined equipment, so as to reduce the technical problem of accuracy of detection；So as to realize under the influence of without the extraneous factor such as supporter or fixture and air, to the high precision test of super-pressure balloon deformation parameter.
Description
Technical field
The present invention relates to precise detection technology field, more particularly to a kind of deformation detecting device for super-pressure balloon and its
Method.
Background technology
Generally there are three kinds for the detection method of spheroid deformation：Contact, laser scan type and common imaging type.These sides
Method needs spheroid being placed on some supporter or fixture, it is adaptable to hard, do not allow to be also easy to produce the spheroid of deformation or right
The shape changing detection of the not high balloon of required precision.The balloon of deformation is produced for thing or fixture influence easily supported, is used
New error can be introduced after above method detection；Therefore, the high precision test to balloon self-deformation is realized, using above-mentioned
Each detection method is not applied to.
The content of the invention
It is an object of the present invention in order to overcome using existing spheroid detection technique when detecting yielding balloon,
Secondary deformation error is produced due to the influence of examined equipment, so as to reduce the technical problem of accuracy of detection；The present invention is carried
For a kind of shape changing detection device and method thereof for super-pressure balloon, it can be realized to superpressure using the detection device of the present invention
The high precision test of (air pressure is more than external pressure in ball) balloon self-deformation.
To achieve these goals, the invention provides a kind of deformation detecting device for super-pressure balloon.The detection is filled
Put including vacuum tank, toss module, image-forming module and data processing module.Wherein, described vacuum tank is used to be placed in its tank
Interior super-pressure balloon provides vacuum or hypobaric, to reduce the influence of atmospheric drag and buoyancy to balloon deformation；Described
Toss module is located in vacuum tank, for super-pressure balloon to be thrown to aerial, super-pressure balloon is moved up to regarding for image-forming module
In the range of；Described image-forming module is used to shoot photo for super-pressure balloon, and imaging data is transmitted to processing module；It is described
Data processing module is used to handle the contour images that super-pressure balloon is obtained after the imaging data inputted from image-forming module, and calculating is obtained
Take the deformation parameter of super-pressure balloon.
As the further improvement of above-mentioned technical proposal, the optical window that described image-forming module is provided with by vacuum tank
Progress is taken pictures imaging.
As the further improvement of above-mentioned technical proposal, described image-forming module is using the camera lens of low distortion and with the overall situation
The camera of shutter is taken pictures.
As the further improvement of above-mentioned technical proposal, lens focus f and camera photo-sensitive cell in the image-forming module
Relation is met between maximum inscribed circle diameter d：
Wherein, D is super-pressure balloon diameter, and S is super-pressure balloon and the spacing of the equivalent entrance pupil position of camera lens.
As the further improvement of above-mentioned technical proposal, the diameter L of the optical window of the vacuum tank meets relation：
Wherein, s is optical window and the spacing of the equivalent entrance pupil position of camera lens.
Present invention also offers what is realized based on the described area source for being used for time delay integration imaging load detection
Detection method, this method includes：
Step 1) super-pressure balloon is placed in vacuum tank；
Step 2) super-pressure balloon is thrown to aerial and tactile to image-forming module transmission using toss module by toss module
Signal；
Step 3) described in image-forming module super-pressure balloon is taken pictures by trigger signal triggering, and imaging data is transmitted
To processing module；
Step 4) handled using data processing module after the view data inputted from image-forming module, obtain the wheel of super-pressure balloon
Contour image, and calculate deformation parameter of the super-pressure balloon on shooting face.
It is used as the further improvement of above-mentioned technical proposal, described step 4) specifically include：
Step 401) imaging data inputted from image-forming module is subjected to distortion correction, correct due to image caused by light path
Distortion；
Step 402) will be through step 401) imaging data after distortion correction carries out appearance profile identification, utilizes gradient calculation
Method identification obtains the contour images of super-pressure balloon；
Step 403) using least square method to step 402) in obtain contour images carry out justify fitting；
Step 404) by counting the difference between contour images and fitting circle, calculate the deformation ginseng of super-pressure balloon
Number.
As the further improvement of above-mentioned technical proposal, the deformation parameter of described super-pressure balloon includes：Radius difference is put down
Average, radius difference maximum, radius difference minimum value and radius difference standard deviation.
A kind of deformation detecting device and its method advantage for super-pressure balloon of the present invention is：
By setting toss module in vacuum tank, super-pressure balloon is thrown to aerial, super-pressure balloon is moved up into
As module field range in take pictures detection, overcome using existing spheroid detection technique in the yielding balloon of detection
When, secondary deformation error is produced due to the influence of examined equipment, so as to reduce the technical problem of accuracy of detection；So as to real
Now without the extraneous factor such as supporter or fixture and air under the influence of, to super-pressure balloon deformation parameter high accuracy examine
Survey.
Brief description of the drawings
Fig. 1 is a kind of deformation detecting device structural representation for super-pressure balloon in the embodiment of the present invention.
Fig. 2 is a kind of application scenarios schematic diagram of deformation detecting device for super-pressure balloon in the embodiment of the present invention.
Fig. 3 is the method flow diagram for utilizing the deformation detecting device for super-pressure balloon of the present invention to realize detection.
Fig. 4 is the flow chart that data processing is carried out using the data processing module of the present invention.
Embodiment
With reference to the accompanying drawings and examples to a kind of deformation detecting device for super-pressure balloon of the present invention and its
Method is described in detail.
As shown in figure 1, a kind of deformation detecting device for super-pressure balloon of the present invention, including：Vacuum tank, toss mould
Block, image-forming module and data processing module.
Wherein, the super-pressure balloon that described vacuum tank is used to be placed in its tank provides vacuum or hypobaric, to drop
The influence of low atmospheric drag and buoyancy to balloon deformation；Described toss module is located in vacuum tank, for super-pressure balloon to be thrown
To aerial, super-pressure balloon is set to move up in the field range of image-forming module；Described image-forming module is used to be super-pressure balloon
Photo is shot, and imaging data is transmitted to processing module；The data processing module is used to handle what is inputted from image-forming module
The contour images of super-pressure balloon are obtained after imaging data, and calculate the deformation parameter for obtaining super-pressure balloon.
Deformation detecting device based on said structure, also has smooth optical window on described vacuum tank, described
Image-forming module super-pressure balloon can be carried out by the optical window taking pictures imaging.And using low distortion camera lens and with the overall situation
The camera of shutter is taken pictures.
Described toss module makes super-pressure balloon when image-forming module is taken pictures by the upward velocity initial to super-pressure balloon
Motion state in low speed, complete agravity.
Initial velocity V after stress effect of the super-pressure balloon through toss module0Relation is between its lifting height H：
Wherein, g is the acceleration of gravity of super-pressure balloon position.
As shown from the above formula, by adjusting the initial velocity of super-pressure balloon, the lifting height of balloon is can control, makes balloon
Rise summit to be located in the field range of image-forming module.
Above-mentioned toss module sends trigger signal after the completion of toss action to image-forming module.When taking pictures of image-forming module
Between controlled by the trigger signal of toss module, the delay of trigger signal refers to balloon rise time t：
T=V0/g
In addition, as shown in Fig. 2 in order that super-pressure balloon is completely in the visual field of image-forming module, and the figure of super-pressure balloon
Lens focus f and camera photo-sensitive cell maximum inscribed circle in most of area as occupying photo-sensitive cell, the image-forming module
Relation is met between diameter d：
Wherein, D is super-pressure balloon diameter, and S is balloon and the spacing of the equivalent entrance pupil position of camera lens.
Meanwhile, the optical window diameter L of the vacuum tank meets imaging viewing field requirement, that is, meets relation：
Wherein, s is optical window and the spacing of the equivalent entrance pupil position of camera lens.
As shown in figure 3, present invention also offers the inspection realized based on the above-mentioned deformation detecting device for super-pressure balloon
Survey method, this method includes：
Step 1) super-pressure balloon is placed in vacuum tank；Step 2) super-pressure balloon is thrown to aerial by toss module,
And send trigger signal to image-forming module using toss module；
Step 3) described in image-forming module super-pressure balloon is taken pictures by trigger signal triggering, and imaging data is transmitted
To processing module；
Step 4) handled using data processing module after the view data inputted from image-forming module, obtain the wheel of super-pressure balloon
Contour image, and calculate deformation parameter of the super-pressure balloon on shooting face.
Described data processing module can be calculated the profile for obtaining balloon by computer according to the imaging data of super-pressure balloon
Parameter, and calculating provides balloon shape changing detection result.The specific processing method of above-mentioned imaging data includes：
Step 401) imaging data inputted from image-forming module is subjected to distortion correction, correct due to image caused by light path
Distortion；Wherein, distortion correction parameter can take pictures acquisition by advance to the waffle slab that is placed in vacuum tank.
Step 402) will be through step 401) imaging data after distortion correction carries out appearance profile identification, utilizes gradient calculation
Method identification obtains the contour image of super-pressure balloon；
Step 403) using least square method to step 402) in obtain contour images carry out justify fitting；
Step 404) by counting the difference between contour images and fitting circle, calculate the deformation ginseng of super-pressure balloon
Number, the deformation parameter specifically may include：Radius difference average value, radius difference maximum, radius difference minimum value and semidiameter
Different standard deviation.
The deformation parameter directly obtained by image is relative value (unit is number of pixels), can pass through equal proportion conversion method
Or the method for throwing the demarcation of hard standard ball, using the absolute value that obtains deformation parameter, (unit is long measure rice m, centimetre cm or in the least
Rice mm).Equal proportion transformational relation is：
Wherein, n is pixel number, and l is pixel spot size, and D ' is the length after equal proportion is changed.
Carried out in addition, the face that also by rotating super-pressure balloon its can be made different is respectively in the field range of image-forming module
Multiple detection of taking pictures, to obtain the deformation parameter of the different facial contours of super-pressure balloon.
It should be noted last that, the above embodiments are merely illustrative of the technical solutions of the present invention and it is unrestricted.Although ginseng
The present invention is described in detail according to embodiment, it will be understood by those within the art that, to the technical side of the present invention
Case is modified or equivalent substitution, and without departure from the spirit and scope of technical solution of the present invention, it all should cover in the present invention
Right among.
Claims (3)
1. a kind of detection method of deformation detecting device for super-pressure balloon, it is characterised in that described deformation detecting device
Including：Vacuum tank, toss module, image-forming module and data processing module；Described vacuum tank is used for super in its tank to be placed in
Ball of calming the anger provides vacuum or hypobaric；Described toss module is arranged in vacuum tank, for super-pressure balloon to be thrown to sky
In, super-pressure balloon is moved up in the field range of image-forming module；Described image-forming module is used to take pictures for super-pressure balloon,
And transmit imaging data to processing module；Described data processing module is used to handle the imaging data inputted from image-forming module
The contour images of super-pressure balloon are obtained afterwards, and calculate the deformation parameter of super-pressure balloon；
This method includes：
Step 1) super-pressure balloon is placed in vacuum tank；
Step 2) super-pressure balloon is thrown to aerial by toss module, and sent and trigger to image-forming module using the toss module
Signal；
Step 3) described in image-forming module super-pressure balloon is taken pictures by trigger signal triggering, and imaging data is transmitted to place
Manage module；
Step 4) handled using data processing module after the imaging data inputted from image-forming module, obtain the profile diagram of super-pressure balloon
Picture, and calculate deformation parameter of the super-pressure balloon on shooting face.
2. it is used for the detection method of the deformation detecting device of super-pressure balloon according to claim 1, it is characterised in that described
Step 4) specifically include：
Step 401) imaging data inputted from image-forming module is subjected to distortion correction, correct because image is abnormal caused by light path
Become；
Step 402) will be through step 401) imaging data after distortion correction carries out appearance profile identification, utilizes gradient calculation method
Identification obtains the contour images of super-pressure balloon；
Step 403) using least square method to step 402) in obtain contour images carry out justify fitting；
Step 404) by counting the difference between contour images and fitting circle, calculate the deformation parameter of super-pressure balloon.
3. it is used for the detection method of the deformation detecting device of super-pressure balloon according to claim 2, it is characterised in that described
The deformation parameter of super-pressure balloon includes：Radius difference average value, radius difference maximum, radius difference minimum value and radius difference
Standard deviation.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241515A (en) * | 1998-07-10 | 2000-01-19 | 宇宙科学研究所长 | Super-pressure balloon and method of manufacturing the same |
| CN101672749A (en) * | 2009-09-28 | 2010-03-17 | 北京航空航天大学 | Test device for surface deformation and material and test method thereof |
| CN202947939U (en) * | 2012-12-05 | 2013-05-22 | 北京理工大学 | Striking equivalent underwater explosion impact loading experiment testing device system |
| CN103487270A (en) * | 2013-09-18 | 2014-01-01 | 浙江工商大学 | Torsion experiment testing device under hot vacuum environment |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6717681B1 (en) * | 1999-03-31 | 2004-04-06 | Benjamin A. Bard | Portable real-time high-resolution digital phase-stepping shearography with integrated excitation mechanisms |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1241515A (en) * | 1998-07-10 | 2000-01-19 | 宇宙科学研究所长 | Super-pressure balloon and method of manufacturing the same |
| CN101672749A (en) * | 2009-09-28 | 2010-03-17 | 北京航空航天大学 | Test device for surface deformation and material and test method thereof |
| CN202947939U (en) * | 2012-12-05 | 2013-05-22 | 北京理工大学 | Striking equivalent underwater explosion impact loading experiment testing device system |
| CN103487270A (en) * | 2013-09-18 | 2014-01-01 | 浙江工商大学 | Torsion experiment testing device under hot vacuum environment |
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Address after: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee after: NATIONAL SPACE SCIENCE CENTER, CAS Address before: 100190 No. two south of Zhongguancun, Haidian District, Beijing 1 Patentee before: Space Science & Applied Research Centre, Chinese Academy of Sciences |