CN201335683Y - On-line image acquisition device - Google Patents
On-line image acquisition device Download PDFInfo
- Publication number
- CN201335683Y CN201335683Y CNU2009201132286U CN200920113228U CN201335683Y CN 201335683 Y CN201335683 Y CN 201335683Y CN U2009201132286 U CNU2009201132286 U CN U2009201132286U CN 200920113228 U CN200920113228 U CN 200920113228U CN 201335683 Y CN201335683 Y CN 201335683Y
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- China
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- ccd
- image acquisition
- photoelectric sensor
- delay circuit
- imaging lens
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Abstract
The utility model relates to an on-line image acquisition device. The prior equipment has the disadvantages of low efficiency and low precision, and can not meet the requirements of on-line total-inspection on large-scale parts. The on-line image acquisition device comprises a photoelectric sensor and an image acquisition unit which are sequentially arranged over a transport unit in the motion direction of the transport unit; and the image acquisition unit comprises a CCD (charge coupled device), an imaging lens and a light source. The photoelectric sensor is connected with a time delay circuit through a signal processing circuit; the time delay circuit is respectively connected with the CCD and a computer; and an input terminal of an image grabbing card is connected with the CCD, and an output terminal is connected with the computer. The on-line image acquisition device can acquire clear original images that are positioned accurately in a real-time and on-line manner, and can solve the problems of fast trigger, accurate positioning, motion fuzzy control, image resolution and the like of the parts in a motion state.
Description
Technical field
The utility model belongs to and relates to the acquisition technology field, relates to a kind of image collecting device, particularly a kind of online image collecting device at the parts in the motion.
Background technology
Along with the development of China's advanced manufacturing industry, ensure the parts quality, enhance productivity more and more importantly, the detection of parts quality is also had higher requirement.The detection of component surface quality as the main contents of quality testing it, mainly at present adopt following three kinds of methods.
1, manual observation and measuring method.This is the method that generally adopts at present, observes or detects by measuring appliance by the artificial vision.Have generally that labour intensity is big, efficient is low, be subjected to human factor to influence shortcomings such as big.Because efficient is low, generally take the mode inspected by random samples, be difficult to realize the full inspection of parts.
2, the automatic testing method under the stationary state.This method parts when detecting remain static, and finish automatically but detect.Can reduce the adverse effect that human factor causes, but since when measuring parts need keep stationary state, detection efficiency is difficult to improve.
3, online automatic detection method.Promptly under motion state, realize the automatic detection of component surface quality.The main employing realize based on the online measuring technique of machine vision, has generally that online, automatic, noncontact, speed are very fast, efficient is than advantages such as height, is one of main developing direction of component surface quality detection technology.But ubiquity is when tested parts movement velocity improves at present, problems such as the original image sharpness of gathering is not enough, the positional precision of measurand in image is not high, influence the raising of detection efficiency, be difficult to adapt to the demand of the online full inspection of extensive parts.
Summary of the invention
The purpose of this utility model is exactly at the deficiencies in the prior art, and a kind of online image collecting device based on asynchronous reset is provided.
The utility model comprises that the direction of motion according to conveyer is successively set on photoelectric sensor and the image acquisition units directly over the conveyer; Image acquisition units comprises CCD, imaging lens and light source, and imaging lens is vertically over against conveyer, and light source is arranged between imaging lens and the conveyer, and CCD is fixedlyed connected with imaging lens.Photoelectric sensor is connected with delay circuit by signal processing circuit, and delay circuit is connected with computing machine with CCD respectively, and the input end of image pick-up card is connected with CCD, output terminal is connected with computing machine.
Signal processing circuit comprises electrochemical capacitor C, pull-up resistor R1, output resistance R2, divider resistance R3, NPN type triode Q; The collector of NPN type triode Q is connected with+12V direct supply with the end of the end of electrochemical capacitor C, pull-up resistor R1 respectively, the base stage of NPN type triode Q is connected with the other end of pull-up resistor R1 and the positive output end of photoelectric sensor 2 respectively, and the other end of electrochemical capacitor C is connected with the public output of photoelectric sensor 2; The end of output resistance R2 is connected with the emitter of NPN type triode Q, the other end of output resistance R2 is connected with the end of divider resistance R3 and the gate-control signal positive input terminal of delay circuit 5 respectively, and the other end of divider resistance R3 is connected with the public input end of the gate-control signal of delay circuit 5.
The utility model is realized the real-time triggering of parts by photoelectric sensor, image collecting device does not contact with parts in the entire image gatherer process, can not produce wearing and tearing, be easy to safeguard, can real-time online collect accurate positioning, original image clearly, can be widely used in the online automatic detection of surface quality such as apparent size, surface imperfection of parts.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the circuit diagram of signal processing circuit among Fig. 1.
Embodiment
The structure of online image collecting device as shown in Figure 1, the direction of arrow among the figure is the direction of motion of conveyer 1.Photoelectric sensor 2 and image acquisition units are successively set on directly over the conveyer 1 according to the direction of motion of conveyer 1; Image acquisition units comprises CCD 6, imaging lens 7 and light source 8, and imaging lens 7 is vertically over against conveyer 1, and light source 8 is arranged between imaging lens 7 and the conveyer 1, and CCD 6 is fixedlyed connected with imaging lens 7.Photoelectric sensor 2 is connected with delay circuit 5 by signal processing circuit 4, and delay circuit 5 is connected with computing machine 11 with CCD 6 respectively, and the input end of image pick-up card 10 is connected with CCD 6, output terminal is connected with computing machine 11.Tested parts 3 are placed on the conveyer 1.
As Fig. 2, signal processing circuit 4 comprises electrochemical capacitor C, pull-up resistor R1, output resistance R2, divider resistance R3, NPN type triode Q; The collector of NPN type triode Q is connected with+12V direct supply with the end of the end of electrochemical capacitor C, pull-up resistor R1 respectively, the base stage of NPN type triode Q is connected with the other end of pull-up resistor R1 and the positive output end of photoelectric sensor 2 respectively, the other end of electrochemical capacitor C is connected with the public output of photoelectric sensor 2, and ground connection; The end of output resistance R2 is connected with the emitter of NPN type triode Q, the other end of output resistance R2 is connected with the end of divider resistance R3 and the gate-control signal positive input terminal of delay circuit 5 respectively, and the other end of divider resistance R3 is connected with the public input end of the gate-control signal of delay circuit 5.
Delay circuit 5 adopts ADLINK PCI 8554 Timer cards, is installed on the PCI slot of computing machine 11, cooperates software to realize delay function.The corresponding port with the asynchronous reset of CCD of the signal output part of delay circuit 5 connects.
In the work, when tested parts 3 trigger during by 9 centers, CCD visual field below the photoelectric sensor 2 under conveyer 1 drives, photoelectric sensor 2 produces an initial triggering signal, initial triggering signal is input in the signal processing circuit 4, makes initial triggering signal be transformed into the external trigger signal of Transistor-Transistor Logic level.The external trigger signal is input in the delay circuit 5, produces an asynchronous reset signal.Asynchronous reset signal is input among the CCD 6 that supports the asynchronous reset pattern.CCD 6 and imaging lens 7 vertically are installed on directly over the conveyer 1 in photoelectric sensor 2 the place aheads, with photoelectric sensor 2 be separated by one section fixing apart from d.One cover light source 8 is installed between CCD 6 and imaging lens 7 and conveyer 1, the illumination in imaging viewing field 9 scopes is provided.CCD 6 gathers a frame new images when asynchronous reset signal is effective, output in the computing machine 11 by image pick-up card 10, finishes the asynchronous reset image acquisition process that photoelectric sensor 2 triggers at random.
Claims (1)
1, a kind of online image collecting device, comprise that direction of motion according to conveyer is successively set on photoelectric sensor and the image acquisition units directly over the conveyer, it is characterized in that: image acquisition units comprises CCD, imaging lens and light source, imaging lens is vertically over against conveyer, light source is arranged between imaging lens and the conveyer, and CCD is fixedlyed connected with imaging lens; Photoelectric sensor is connected with delay circuit by signal processing circuit, and delay circuit is connected with computing machine with CCD respectively, and the input end of image pick-up card is connected with CCD, output terminal is connected with computing machine;
Described signal processing circuit comprises electrochemical capacitor C, pull-up resistor R1, output resistance R2, divider resistance R3, NPN type triode Q; The collector of NPN type triode Q is connected with+12V direct supply with the end of the end of electrochemical capacitor C, pull-up resistor R1 respectively, the base stage of NPN type triode Q is connected with the other end of pull-up resistor R1 and the positive output end of photoelectric sensor (2) respectively, and the other end of electrochemical capacitor C is connected with the public output of photoelectric sensor (2); The end of output resistance R2 is connected with the emitter of NPN type triode Q, the other end of output resistance R2 is connected with the end of divider resistance R3 and the gate-control signal positive input terminal of delay circuit (5) respectively, and the other end of divider resistance R3 is connected with the public input end of gate-control signal of delay circuit (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201132286U CN201335683Y (en) | 2009-01-22 | 2009-01-22 | On-line image acquisition device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2009201132286U CN201335683Y (en) | 2009-01-22 | 2009-01-22 | On-line image acquisition device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201335683Y true CN201335683Y (en) | 2009-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2009201132286U Expired - Lifetime CN201335683Y (en) | 2009-01-22 | 2009-01-22 | On-line image acquisition device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201335683Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398382A (en) * | 2011-11-22 | 2012-04-04 | 杭州显泽科技有限公司 | Glue-coating detection system of box pasting machine |
| CN103542810A (en) * | 2013-09-30 | 2014-01-29 | 四川虹欧显示器件有限公司 | Electrode alignment coincidence rate detector and electrode alignment coincidence rate calculation method |
-
2009
- 2009-01-22 CN CNU2009201132286U patent/CN201335683Y/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102398382A (en) * | 2011-11-22 | 2012-04-04 | 杭州显泽科技有限公司 | Glue-coating detection system of box pasting machine |
| CN103542810A (en) * | 2013-09-30 | 2014-01-29 | 四川虹欧显示器件有限公司 | Electrode alignment coincidence rate detector and electrode alignment coincidence rate calculation method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20091028 Effective date of abandoning: 20090122 |