CN202188830U - Single camera multi-measuring point dynamic displacement measuring apparatus - Google Patents
Single camera multi-measuring point dynamic displacement measuring apparatus Download PDFInfo
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- CN202188830U CN202188830U CN2011202817080U CN201120281708U CN202188830U CN 202188830 U CN202188830 U CN 202188830U CN 2011202817080 U CN2011202817080 U CN 2011202817080U CN 201120281708 U CN201120281708 U CN 201120281708U CN 202188830 U CN202188830 U CN 202188830U
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- displacement measuring
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Abstract
The utility model relates to a single camera multi-measuring point dynamic displacement measuring apparatus. A sign of a certain shape is fixed on the surface of an object to be measured; the center of the shape of the sign is used as an observation point on the surface of the object to be measured. A high speed camera is utilized to shoot a series of photographs of the sign in movement processes and a program independently developed based on a LabVIEW software visual sense and movement module is employed to successively read and analyze the photographs, record movement locus pf sign points and meanwhile draft corresponding displacement-time curves. A series of different observation points are arranged to realize accurate measurement of the multi-measuring point dynamic displacement.
Description
Technical field
The utility model relates to the moving displacement measuring device of a kind of one camera multi-measuring point.
Background technology
The existing camera that utilizes moves the displacement measurement patent; 201010184619), and the polyphaser dynamic photogrammtry method (application number/patent No.: 200910305434) in the Zhang Zhengyu vibration environment of applying in 2009 mainly contain Xue of Xi'an Communications University and build people such as scholar in the one camera Measuring Object three-dimensional position of application in 2010 and the method for attitude (application number/patent No.:.These methods have been carried out effective trial on the moving displacement measurement of camera, but all do not solve two key issues that survey crew is paid close attention to most in the practical applications: accuracy and economy.Therefore, provide a kind of economical and practical and device that can accurately measure the multi-measuring point dynamic displacement to be very important.
Summary of the invention
The purpose of the utility model provides the moving displacement measuring device of a kind of one camera multi-measuring point, is the basis with this hardware structure, can realize the accurate measurement to the multi-measuring point dynamic displacement.
The one camera multi-measuring point of the utility model moves displacement measuring device; Comprise testee; It is characterized in that: the sign that described testee surface fixing has definite shape; Said measured object the place ahead is provided with the high speed camera that is fixed on the tripod, and described high speed camera is provided with wide-angle lens, and described high speed camera links to each other with the computing machine that 1394 data collecting cards and have the image analysis processing function through 1394 data connecting lines successively.
In the utility model one embodiment, described definite shape comprises square, rectangle, rhombus or circle.
In the utility model one embodiment, described computing machine is a portable computer or a panel computer.
The beneficial effect of the utility model is; The utility model framework is simple; Each parts Turin work can be unloaded; Be easy to carry, it cooperates software not only can improve the accuracy and the precision of moving displacement measurement, and with market on like product compare and have easy to use, cheap and can realize the simultaneously-measured advantage of multi-measuring point.
Description of drawings
Fig. 1 is the system architecture synoptic diagram of the utility model embodiment.
Fig. 2 is the utility model method flow synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
As shown in Figure 1; The one camera multi-measuring point of present embodiment moves displacement measuring device; Comprise testee 8, it is characterized in that: the sign 7 that described testee 8 surfaces fixing have definite shape, said measured object the place ahead are provided with the high speed camera 1 that is fixed on the tripod 3; Described high speed camera 1 is provided with wide-angle lens 2, and described high speed camera links to each other with the computing machine 4 that 1394 data collecting cards 5 and have the image analysis processing function through 1394 data connecting lines 6 successively.In the present embodiment, said definite shape can be circle, triangle, quadrilateral or pentagon etc.; Described computing machine can be desktop computer, laptop computer or panel computer.
Here be noted that; What the utility model was protected is the hardware configuration of device; Do not require protection as for software, but in order to let those skilled in the art better understand the utility model, below we combine software that the principle of work of the utility model structure is further specified.The hardware of the utility model is taken a series of photos of sign in motion process through high speed camera after installing; Then; The Vision Acquisition software that utilizes NI company to provide; Extract a print from said high speed camera; And, calculating the pixel size of print and the scale-up factor of fixed signal point actual size through on this print, stipulating the method for particular line segment length, this scale-up factor is used to realize the unit conversion of camera whole measuring process; At last, carry out the sampling analysis process repeatedly of the moving displacement of observation monument, and the movement locus of record mark point, corresponding displacement-time curve drawn simultaneously.
As shown in Figure 2, described sampling analysis process repeatedly is to realize through the while circulation that a continuous sampling is analyzed; Each cyclic process comprises: at first; Utilize Vision Acquisition software to read the instant photo of a fixed signal, will notice in the measuring process guaranteeing that the border of fixed signal can not surpass the field range of camera in the process of moving together along with testee from camera; Then, " Locate Edges " order that utilizes LabVIEW software to provide is carried out marginal analysis and location to the instant photo that comprises the border, and obtains the centre of form coordinate of fixed signal; At last,, be presented on the computer screen in real time, and input system is carried out the data deposit the real time position of this centre of form coordinate as testee.This sampling analysis process repeats always, finishes sampling analysis until " STOP " button of clicking on the control panel.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.
Claims (3)
1. an one camera multi-measuring point moves displacement measuring device; Comprise testee; It is characterized in that: the sign that described testee surface fixing has definite shape; Said measured object the place ahead is provided with the high speed camera that is fixed on the tripod, and described high speed camera is provided with wide-angle lens, and described high speed camera links to each other with the computing machine that 1394 data collecting cards and have the image analysis processing function through 1394 data connecting lines successively.
2. one camera multi-measuring point according to claim 1 moves displacement measuring device, and it is characterized in that: described definite shape comprises circle, triangle, quadrilateral or pentagon.
3. one camera multi-measuring point according to claim 1 moves displacement measuring device, it is characterized in that: described computing machine is a portable computer, panel computer or desktop computer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202817080U CN202188830U (en) | 2011-08-04 | 2011-08-04 | Single camera multi-measuring point dynamic displacement measuring apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202817080U CN202188830U (en) | 2011-08-04 | 2011-08-04 | Single camera multi-measuring point dynamic displacement measuring apparatus |
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| Publication Number | Publication Date |
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| CN202188830U true CN202188830U (en) | 2012-04-11 |
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| CN2011202817080U Expired - Fee Related CN202188830U (en) | 2011-08-04 | 2011-08-04 | Single camera multi-measuring point dynamic displacement measuring apparatus |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200364A (en) * | 2013-03-11 | 2013-07-10 | 太仓中科信息技术研究院 | Camera lifting upgrading-degrading special-effect shooting method based on marking characteristics |
| CN103791891A (en) * | 2014-03-07 | 2014-05-14 | 福州大学 | Device and method for testing electric appliance three-dimensional dynamic characteristics based on one camera |
| CN106121627A (en) * | 2016-06-03 | 2016-11-16 | 山东天工石油装备有限公司 | A kind of oil pumper displacement acquisition method based on image recognition |
| CN106840110A (en) * | 2017-03-17 | 2017-06-13 | 大连理工大学 | A kind of motion measuring method and device for being applied to large-scale many Lamb wave wave simulation systems |
| CN107702787A (en) * | 2017-09-29 | 2018-02-16 | 福州大学 | Visual vibrating displacement four-dimension measuring method based on common picture pick-up device |
| US9898833B1 (en) | 2016-07-15 | 2018-02-20 | Northrop Grumman Systems Corporation | Apparatus and method for determining the dimensions of a package while in motion |
-
2011
- 2011-08-04 CN CN2011202817080U patent/CN202188830U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103200364A (en) * | 2013-03-11 | 2013-07-10 | 太仓中科信息技术研究院 | Camera lifting upgrading-degrading special-effect shooting method based on marking characteristics |
| CN103200364B (en) * | 2013-03-11 | 2016-03-23 | 太仓中科信息技术研究院 | Based on the camera lifting lattice special efficacy image pickup method of marker characteristic |
| CN103791891A (en) * | 2014-03-07 | 2014-05-14 | 福州大学 | Device and method for testing electric appliance three-dimensional dynamic characteristics based on one camera |
| CN103791891B (en) * | 2014-03-07 | 2015-11-18 | 福州大学 | A kind of electrical equipment Three-Dimensional Dynamic characteristic test device based on one camera and method |
| CN106121627A (en) * | 2016-06-03 | 2016-11-16 | 山东天工石油装备有限公司 | A kind of oil pumper displacement acquisition method based on image recognition |
| US9898833B1 (en) | 2016-07-15 | 2018-02-20 | Northrop Grumman Systems Corporation | Apparatus and method for determining the dimensions of a package while in motion |
| CN106840110A (en) * | 2017-03-17 | 2017-06-13 | 大连理工大学 | A kind of motion measuring method and device for being applied to large-scale many Lamb wave wave simulation systems |
| CN106840110B (en) * | 2017-03-17 | 2019-08-13 | 大连理工大学 | A kind of motion measuring method and device applied to large-scale more Lamb wave wave simulation systems |
| CN107702787A (en) * | 2017-09-29 | 2018-02-16 | 福州大学 | Visual vibrating displacement four-dimension measuring method based on common picture pick-up device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120411 Termination date: 20160804 |
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| CF01 | Termination of patent right due to non-payment of annual fee |