CN101441065A - Tiny displacement deforming high precision and non-contact type measuring system and method - Google Patents
Tiny displacement deforming high precision and non-contact type measuring system and method Download PDFInfo
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- CN101441065A CN101441065A CNA2008100511001A CN200810051100A CN101441065A CN 101441065 A CN101441065 A CN 101441065A CN A2008100511001 A CNA2008100511001 A CN A2008100511001A CN 200810051100 A CN200810051100 A CN 200810051100A CN 101441065 A CN101441065 A CN 101441065A
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Abstract
The invention relates to a high-accuracy non-contact measurement system and method for micro displacement deformation, which are used for measuring micro deflection of a missile emission vehicle emission rack. The system is mainly composed of an object target 1, an optical lens 2, a area array CCD 3 and a treatment circuit 4. By mounting the object target 1 on the emission rack and imaging the object target to the area array CCD 3 through the optical lens 2, the micro deflection of the emission rack can be measured based on imaging position of the object target 1 on the area array CCD 3 and included angle of the emission rack 5 and an optical axis 6 obtained by treatment and calculation. The device of the present invention can real time monitor orientation deformation angle and pitching deformation angle of the emission rack. The invention can realize real time measurement and has characteristics of simple process and high precision.
Description
Technical field
The present invention relates to tiny displacement deforming high precision, contactless measuring system and measuring method, be mainly used in the microdeformation amount of measuring the car launcher launcher.Simultaneously also can be applied in commercial production and the engineering tiny displacement deforming be carried out high precision, non-contact measurement.
Background technology
Before MISSILE LAUNCHING, extremely important to the measurement of the initial position of guided missile, generally these position datas are to measure by the inertial navigation system that is installed on the launcher, do not consider the distortion of launcher self.Yet in recent years along with the MISSILE LAUNCHING precision constantly improves, the distortion of guided missile truck launcher self becomes and can not ignore, and therefore the detection of MISSILE LAUNCHING vehicle frame distortion is had higher requirement; Owing to the real-time of emission, the size that need provide deflection in real time is used for the correction of emission parameter or the data analysis after the emission simultaneously.
In addition, in the production of reality and life, usually need micro-displacement or microdeformation are carried out high-acruracy survey, for example the detection of the deformation of the distortion of the amount of deflection of bridge, dam, highway or buildings etc.Up to the present, the detection method of employing mainly contains transit three-dimensional coordinate measurement method and laser auto-collimation mensuration.It is higher that the employing transit carries out non-contact three-dimensional measurement of coordinates precision, but can only take manual measurement at present, can not realize real time automatic detection, and cost an arm and a leg; And adopt autocollimation can realize real-time detection to micro-displacement in conjunction with microprocessor method, but because the distortion meeting of collimating mirror self brings sizable error to measurement.Therefore invent and a kind ofly can either realize measuring real-time the measuring method that satisfies simultaneously high-precision requirement again and have very high practical value.
Summary of the invention
The present invention adopts area array CCD as imaging sensor, can carry out the relative position of target fast, noncontact, high-precision real-time measurement.Same existing mechanical, optical gauge are compared, and this measurement mechanism has more wide usable range and superiority.In fields such as national defense industry, construction work, have been widely used.
The technical matters that solves
At first, realize high-precision angular deformation measurement, secondly also will realize real-time automatic measuring, will have simple in structure, lower-cost characteristics in addition.
The technical scheme of invention
The inventive method realizes measuring deformation method: area array CCD is installed in support body one end, target is installed in two fulcrum places of support body to be measured respectively, target is imaged on the area array CCD image planes through optical lens, and area array CCD is converted to digital electric signal with the light signal that receives; Deform when support body during measurement, micro-displacement can take place in target, and area array CCD will be exported digital signal corresponding in real time, and the image space of the target that collects is calculated the distortion angle of support body with respect to optical axis by processing, converts deflection to.
The advantage of invention
The inventive method have can measure in real time, precision height, simple in structure, low cost and other advantages, can be widely used in industries such as national defence, building, highway.
Description of drawings
Accompanying drawing 1 is the launcher deformation measurement method block diagram of system;
Accompanying drawing 2 is a launcher deformation measuring device simplified structure diagram;
Accompanying drawing 3 is a launcher deformation measuring device structural drawing;
Accompanying drawing 4 is a launcher deformation measurement principle light path perspective view;
Accompanying drawing 5 is a launcher deformation measurement workflow diagram.
Embodiment
Below in conjunction with the drawings and specific embodiments the present invention is described in further detail.
System architecture is formed:
The system that this measuring method adopts comprises: target 1, optical lens 2, area array CCD 3, treatment circuit 4, (as shown in Figure 1).
4 pairs of image digital signals of treatment circuit are handled in real time, collection, processing and the output of finished surface battle array CCD3 view data.
Area array CCD 3 is installed in the launcher rear end, and target is installed on two fulcrums of the other end of launcher, and total system is constructed shown in Fig. 2,3.
The measuring method and the course of work:
Measuring method as shown in Figure 4, the object coordinates of two targets 1 is respectively (x
A, y
A) and (x
B, y
B), being imaged onto on the CCD3, picture side's coordinate is (x before the distortion
a, y
a) and (x
b, y
b), distortion after image side coordinate is (x
A ＇, y
A ＇) and (x
B ＇, y
B ＇) .A, B be the zero-bit position of initial demarcation, the angle of straight line AB and optical axis 6 is set at Relative Zero parallactic angle θ
0A ＇, B ＇ are the coordinate position after being out of shape, and the angle of straight line A ＇ B ＇ and optical axis 6 is θ ＇, and then pitching distortion angle is θ=θ ＇-θ
0, distortion angle, orientation is
According to calculating the distortion of pitching as can be known angle θ be:
Distortion angle, orientation
For:
Measuring method is as described below, and the hot spot of target 1 images on the area array CCD 3 through optical lens 2, according to the image space of target 1 on area array CCD 3, calculates the angle of 1 line of two targets and optical axis 6 by treatment circuit 4.When launcher deformed in the MISSILE LAUNCHING process, this angle can change, and variable quantity is distortion angle, orientation and the pitching distortion angle that launcher deforms, and exports during with this fructufy.Whole workflow as shown in Figure 5.
Claims (2)
1, tiny displacement deforming high precision, contactless measuring system is characterized in that this system comprises target (1), optical lens (2), area array CCD (3), treatment circuit (4);
Optical lens (2) is imaged on target (1) on area array CCD (3) target surface, treatment circuit (4) is handled in real time to image digital signal, finish collection, processing and the output of area array CCD (3) view data, area array CCD (3) is positioned at the launcher rear end, and target (1) is positioned on two fulcrums of the other end of launcher.
2, the measuring method of tiny displacement deforming high precision, contactless measuring system, it is characterized in that measuring method by following three the step carry out:
1) hot spot of target (1) images on the area array CCD (3) through optical lens (2);
2) according to the image space of target (1) on area array CCD (3), calculate the angle of line and optical axis (6) between two targets (1) by treatment circuit (4), promptly extrapolate the angle of launcher (5) and optical axis (6);
3) the variable angle amount is the distortion angle, orientation that launcher deforms
With pitching distortion angle θ, export in the time of will calculating fructufy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100511001A CN101441065A (en) | 2008-08-21 | 2008-08-21 | Tiny displacement deforming high precision and non-contact type measuring system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100511001A CN101441065A (en) | 2008-08-21 | 2008-08-21 | Tiny displacement deforming high precision and non-contact type measuring system and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101441065A true CN101441065A (en) | 2009-05-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNA2008100511001A Pending CN101441065A (en) | 2008-08-21 | 2008-08-21 | Tiny displacement deforming high precision and non-contact type measuring system and method |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519742A (en) * | 2011-11-21 | 2012-06-27 | 中联重科股份有限公司 | Method and system for detecting faults of cantilever as well as crane |
| CN103424082A (en) * | 2013-07-30 | 2013-12-04 | 四川华腾公路试验检测有限责任公司 | Non-contact type reinforcing steel bar deformation measurement device and measurement method thereof |
| CN103791880A (en) * | 2014-01-23 | 2014-05-14 | 中国科学院长春光学精密机械与物理研究所 | Device for accurate measurement of micro deformation of composite rod for space |
| CN103837084A (en) * | 2014-02-18 | 2014-06-04 | 浙江华东工程安全技术有限公司 | Three-direction displacement measurement method based on laser speckle imaging technology |
| CN105668419A (en) * | 2016-04-15 | 2016-06-15 | 徐州重型机械有限公司 | Sidewise bending detection method and device for crane boom and crane |
| CN111197946A (en) * | 2020-03-10 | 2020-05-26 | 成都润联科技开发有限公司 | Raining hail-suppression rocket launching device |
| CN111854526A (en) * | 2020-03-10 | 2020-10-30 | 成都润联科技开发有限公司 | Intelligent artificial precipitation enhancement and hail suppression rocket operation system and method |
-
2008
- 2008-08-21 CN CNA2008100511001A patent/CN101441065A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102519742A (en) * | 2011-11-21 | 2012-06-27 | 中联重科股份有限公司 | Method and system for detecting faults of cantilever as well as crane |
| CN103424082A (en) * | 2013-07-30 | 2013-12-04 | 四川华腾公路试验检测有限责任公司 | Non-contact type reinforcing steel bar deformation measurement device and measurement method thereof |
| CN103791880A (en) * | 2014-01-23 | 2014-05-14 | 中国科学院长春光学精密机械与物理研究所 | Device for accurate measurement of micro deformation of composite rod for space |
| CN103791880B (en) * | 2014-01-23 | 2016-08-17 | 中国科学院长春光学精密机械与物理研究所 | Device for accurate measurement space composite rod member micro-strain amount |
| CN103837084A (en) * | 2014-02-18 | 2014-06-04 | 浙江华东工程安全技术有限公司 | Three-direction displacement measurement method based on laser speckle imaging technology |
| CN103837084B (en) * | 2014-02-18 | 2017-01-04 | 浙江华东工程安全技术有限公司 | Three direction displacement method for measurement based on laser facula imaging technique |
| CN105668419A (en) * | 2016-04-15 | 2016-06-15 | 徐州重型机械有限公司 | Sidewise bending detection method and device for crane boom and crane |
| CN111197946A (en) * | 2020-03-10 | 2020-05-26 | 成都润联科技开发有限公司 | Raining hail-suppression rocket launching device |
| CN111854526A (en) * | 2020-03-10 | 2020-10-30 | 成都润联科技开发有限公司 | Intelligent artificial precipitation enhancement and hail suppression rocket operation system and method |
| CN111854526B (en) * | 2020-03-10 | 2024-01-26 | 成都润联科技开发有限公司 | Intelligent artificial precipitation hail suppression rocket operation system and method |
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Open date: 20090527 |