CN100405010C - Realtime deformation measuring device based on video image - Google Patents
Realtime deformation measuring device based on video image Download PDFInfo
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- CN100405010C CN100405010C CNB2005100170643A CN200510017064A CN100405010C CN 100405010 C CN100405010 C CN 100405010C CN B2005100170643 A CNB2005100170643 A CN B2005100170643A CN 200510017064 A CN200510017064 A CN 200510017064A CN 100405010 C CN100405010 C CN 100405010C
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Abstract
A measurement device for the real-time distortion value based on the video image belongs to the measurement technology region. It includes the image collecting module, the management module, the data communication module; the image output end of the image collecting module is connected to the image output end of the management module. The data input/output end of the data communication module is all connected to the external digital communication system. The invention explores the applying software which is the multithreading program technique to do the process of the collection, the treatment and the communication at the same time, so it can collect the image with the external equipment or the device in-phase and treat the image. At the same time, it transfers the results to the external device to compensate the data for the external device dynamically.
Description
Technical field
The invention belongs to field of measuring technique, relate to a kind of device of measurement target deflection, specifically a kind of realtime deformation measuring device based on video image.
Background technology
In scientific experimentation or measuring process, need sometimes real-time dynamic monitoring is carried out in the distortion of instrument or equipment.By the optical alignment imaging method can be quantitative contactless acquisition target distortion amount data, the optical alignment imaging system mainly is made up of autocollimation theodolite, reflex light-tube, pentaprism, support, its optical texture more complicated, and can not utilize the data of acquisition that surveying instrument or equipment are carried out compensation data.
Summary of the invention
The present invention is on the basis of constructed in hardware, Application and Development software, purpose provides a kind of realtime deformation measuring device based on video image, by the view data that collects and the processing of externally measured data are realized real-time measurement target deflection, provides the result line data compensation of going forward side by side.
The present invention includes image capture module 1, management control module 2, data communication module 3; The view data output terminal of image capture module 1 links to each other with management control module 2 view data input ends, the data I/O end of management control module 2 links to each other with the data I/O end of data communication module 3, and the data I/O end of data communication module 3 links to each other with external digital communication subsystem.
For task of making system under the control of management control module 2 programmed instruction, finish management control image acquisition, outbound data communication and result is handled and provided to the view data and the externally measured data of acquisition, work out primary control program in advance, and it is deposited in the memory of management control module 2.
A. start;
B. image capture module 1, data communication module 3, program correlation parameter are carried out the initialization setting, start thread;
C. select the initialization system mode of operation according to the user;
D. judging whether the vedio data collection is finished, is that then program changes step e over to, otherwise waits for the vedio data signal;
E. the video image of gathering is carried out interpretation, according to the deflection of the position measurement target of image;
F. gather the external time measurement data;
G. store target distortion amount data and external time measurement data, carry out data processing, and with result by data communication module 3 output;
H. judging whether interpretation finishes, be EOP (end of program) then, otherwise program is returned steps d.
The course of work of the present invention: the video image of camera acquisition is gathered and is dumped in the management control module 2 through image capture module 1, management control module 2 carries out data communication by data communication module 3 and digital communication subsystem simultaneously, synchronously receiving system external instrument or device measuring data; Management control module 2 is mainly used in management control image acquisition, outbound data communication and result is handled and provided to the view data and the externally measured data that obtain; Management control module 2 result data pass to instrument or external unit by data communication module 3 and digital communication subsystem, realize external instrument or equipment are carried out the real-time dynamic data compensation.
The present invention is on the basis of constructed in hardware, and Application and Development software, software adopt the multi-thread programming technology, and make collection, processing and communication walk abreast and carry out, and then the raising system effectiveness; Utilize sliding window treatment technology to reduce data processing amount, and then improved processing speed, can realization and external instrument or device synchronization gather video image, and in real time the image that collects is handled, simultaneously, result after the calculation process is fed back to external unit, realize external instrument or equipment are carried out the real-time dynamic data compensation.
Description of drawings
Fig. 1 is a structural representation of the present invention, also is the specification digest accompanying drawing.1 is image capture module, 2 management control modules, 3 data communication modules among the figure.
Fig. 2 is management control module 2 primary control program process flow diagrams of the present invention.
Embodiment
Native system is based on the cover system on the PC system architecture.Each block configuration is as follows:
Image capture module 1: adopt in the homemade good perseverance from the OK of company image series capture card.
Management control module 2: adopt any PC framework computing machine of existing market main flow all can meet design requirement.CPU frequency is not less than 800MHz, and internal memory is not less than 512MB.System adopts WIN2000 operating system, and the software programming platform adopts VC++6.0.
Data communication module 3: the CP132 asynchronous serial communication card that adopts Taiwan MOXA company.
Image pick-up card 1 links to each other with computing machine by pci bus, and computing machine is by pci bus and asynchronous
The serial communication card links to each other, and the asynchronous serial communication cartoon is crossed serial line interface and linked to each other with the digital communication subsystem.
For task of making system under computer program instructions control, finish management control image acquisition, outbound data communication and result is handled and provided to the view data and the externally measured data of acquisition, work out primary control program in advance, and it is deposited in the memory of computing machine.
Computing machine primary control program step is as follows:
A. start;
B. image pick-up card, asynchronous serial communication card, program correlation parameter are carried out the initialization setting, start thread;
C. select the initialization system mode of operation according to the user;
D. judging whether the vedio data collection is finished, is that then program changes step e over to, otherwise waits for the vedio data signal;
E. the video image of gathering is carried out interpretation, according to the deflection of the position measurement target of image;
F. gather the external time measurement data;
G. store target distortion amount data and external time measurement data, carry out data processing, and result exported by the asynchronous serial communication card;
H. judging whether interpretation finishes, be EOP (end of program) then, otherwise program is returned steps d.
Claims (2)
1. the realtime deformation measuring device based on video image comprises image capture module (1), management control module (2), data communication module (3); The view data output terminal of image capture module (1) links to each other with management control module (2) view data input end, the data I/O end of management control module (2) links to each other with the data I/O end of data communication module (3), and the data I/O end of data communication module (3) links to each other with external digital communication subsystem; It is characterized in that working out in advance and deposit in the memory of management control module (2), make system under management control module (2) programmed instruction, finish management control image acquisition, outbound data communication and the primary control program that the task of result was handled and provided to the view data that obtains and externally measured data is comprised the following steps:
A. start;
B. image capture module (1), data communication module (3), program correlation parameter are carried out the initialization setting, start thread;
C. select the initialization system mode of operation according to the user;
D. judging whether the vedio data collection is finished, is that then program changes step e over to, otherwise waits for the vedio data signal;
E. the video image of gathering is carried out interpretation, according to the deflection of the position measurement target of image;
F. gather the external time measurement data;
G. store target distortion amount data and external time measurement data, carry out data processing, and with result by data communication module (3) output;
H. judging whether interpretation finishes, be EOP (end of program) then, otherwise program is returned steps d.
2. the realtime deformation measuring device based on video image according to claim 1 is characterized in that image capture module (1) adopts image pick-up card, and management control module (2) adopts computing machine, and data communication module (3) adopts the asynchronous serial communication card; Image pick-up card links to each other with computing machine by pci bus, and computing machine links to each other with the asynchronous serial communication card by pci bus, and the asynchronous serial communication cartoon is crossed serial line interface and linked to each other with the digital communication subsystem.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100170643A CN100405010C (en) | 2005-08-22 | 2005-08-22 | Realtime deformation measuring device based on video image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100170643A CN100405010C (en) | 2005-08-22 | 2005-08-22 | Realtime deformation measuring device based on video image |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1896683A CN1896683A (en) | 2007-01-17 |
| CN100405010C true CN100405010C (en) | 2008-07-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2005100170643A Expired - Fee Related CN100405010C (en) | 2005-08-22 | 2005-08-22 | Realtime deformation measuring device based on video image |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003945B (en) * | 2010-10-28 | 2013-05-22 | 汪远银 | Virtual optical extensometer and measurement method thereof |
| CN108387579B (en) * | 2018-03-05 | 2021-06-22 | 长春理工大学 | Testing device for oxide film deformation of pipe fitting sample |
| CN108731611B (en) * | 2018-05-30 | 2020-08-07 | 成都天仁民防科技有限公司 | System and method for detecting deformation state of civil air defense gantry crane angle |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290028Y (en) * | 1997-04-15 | 1998-09-02 | 董伟 | Automatic trace monitoring device for arch dam three-dimentional out-ff shape |
| JPH11132731A (en) * | 1997-10-31 | 1999-05-21 | Shimadzu Corp | Video type noncontact extensometer |
| CN1361513A (en) * | 2000-12-27 | 2002-07-31 | 中国科学院长春光学精密机械与物理研究所 | Opened color video display function detecting system and method |
-
2005
- 2005-08-22 CN CNB2005100170643A patent/CN100405010C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2290028Y (en) * | 1997-04-15 | 1998-09-02 | 董伟 | Automatic trace monitoring device for arch dam three-dimentional out-ff shape |
| JPH11132731A (en) * | 1997-10-31 | 1999-05-21 | Shimadzu Corp | Video type noncontact extensometer |
| CN1361513A (en) * | 2000-12-27 | 2002-07-31 | 中国科学院长春光学精密机械与物理研究所 | Opened color video display function detecting system and method |
Non-Patent Citations (3)
| Title |
|---|
| 基于视频图像的实时测量技术的实现. 张明慧等.微计算机信息（测控自动化），第20卷第3期. 2004 * |
| 视频图像判读技术在实时测量系统中的应用. 张明慧等.测控技术，第23卷第5期. 2004 * |
| 角变形实时测量系统中计算机控制系统的实现. 张明慧等.计算机测量与控制，第13卷第4期. 2005 * |
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| CN1896683A (en) | 2007-01-17 |
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Granted publication date: 20080723 Termination date: 20100822 |