CN1546996A - Active infrared CCD weld seam detecting device - Google Patents
Active infrared CCD weld seam detecting device Download PDFInfo
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- CN1546996A CN1546996A CNA2003101093522A CN200310109352A CN1546996A CN 1546996 A CN1546996 A CN 1546996A CN A2003101093522 A CNA2003101093522 A CN A2003101093522A CN 200310109352 A CN200310109352 A CN 200310109352A CN 1546996 A CN1546996 A CN 1546996A
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Abstract
The invention is a kind of initiative infrared CCD welded seam detecting device, which mainly includes industrial control computer, image acquiring model, input and output signal model, and gearing mechanism model. It uses the initiative infrared camera made up of CCD camera with an infrared filter piece and the infrared light source, it is connected with the industry control computer through the USB interface, each camera collimates to the welded seam needed to be detected, all the cameras are connected with USB network hub, the detecting software of the computer switches the cameras automatically, opens the infrared light source to acquire the infrared image of welded seam to carry on process analysis, and sends the piece to qualified and fault channels according to the identification result. The structure of the invention is compact; it applies to the quick detection of production line.
Description
Technical field:
What the present invention relates to is a kind of active infrared CCD weld seam detection device, and particularly a kind of automobile accessory frame weld seam detection device that passes through the active infrared CCD of usb bus can be used for the online detection of automobile accessory frame production line.Belong to image detection and control technology field.
Background technology:
In auto parts and components, the shared ratio of weldment is very high.The quality of welding quality directly influences the quality of automobile; Simultaneously also inseparable with the security performance of car load.Vehicle ' is actual to be shown, existing many automobiles are because problems of welded quality such as weldering partially, leakage weldering have produced great traffic hazard, and as seen, the control of welding quality has economic benefit and important social benefit widely.
Because the importance of weld seam detection in industry, people work out multiple welding line detector for many years, and butt welded seam detects and becomes one and develop technology fast now.Use ccd sensor and can not detect weld seam interior welds quality, but the identification by the surface weld image, can draw fully and whether leak weldering, whether weld size and shape inclined to one side, weld seam, assess welding quality on the whole.
In the mode of carrying out video and image capturing, adopt capure card usually.The capure card mode generally is applied in fields such as closed-circuit TV monitoring systems.The major advantage of this mode is can long-distance transmissions, and because the existence of switch is arranged, can monitor multipath video source simultaneously.But the matrix switcher that capure card and video source are used all costs an arm and a leg, and capure card adopts is the analog transmission mode, therefore has the loss of image, and will reach the picture quality same with camera, costs dearly.
Summary of the invention:
The objective of the invention is at the deficiencies in the prior art, a kind of active infrared CCD weld seam detection device is provided, use active infrared CCD technology and general-purpose serial bus USB technology, realize the online quick weld seam detection of subframe on the automobile component production line.
For realizing such purpose, active infrared CCD weld seam detection device of the present invention mainly comprises: industrial control computer, image collection module, input and output (I/O) signaling module and transmission control module.
The component parts of image collection module comprises: CCD camera, the USB that meets the USB2.0 standard, the hub (HUB) that has 5V voltage and 500mA electric current and the infrared light supply of GaAs infrarede emitting diode.CCD shooting headband infrared CCD dedicated optical filter links to each other with industrial control computer by USB interface.
Input and output I/O signaling module is made of I/O integrated circuit board, drive plate, alarm lamp, pneumatic valve, lifting cylinder and reducing motor.The I/O integrated circuit board is inserted in the computing machine, and alarm lamp, pneumatic valve, lifting cylinder and reducing motor link to each other with the I/O plate by drive plate.
The transmission control module comprises workpiece kinematic train, raceway, motor reducer and frame.Raceway, motor reducer and frame link to each other with the transmission system, and kinematic train links to each other with the I/O plate.
In the weld seam detection process, tested workpiece is installed on the detection frame, operation detects software on industrial computer; After detecting workpiece and put in place by the active infrared ccd sensor, open the lifting cylinder, the lifting cylinder is gone up workpiece and is made it to navigate in the active infrared CCD camera sensing range; The detection software of computing machine a plurality of cameras that automatically switch are opened infrared light supply and are obtained the weld seam infrared image, and handle infrared image, analyze recognition result.Workpiece descends then, is transported to qualified raceway and defective raceway respectively according to recognition result.
Whole apparatus structure compactness of the present invention, use simply,, draw and whether leak weldering, whether weld size and shape inclined to one side, weld seam, can monitor the welding quality of production line on the whole by the identification of surface weld image.Detection frame according to the design of the concrete structure of workpiece makes the loading and unloading of workpiece convenient; Utilize the usb bus technology not have the loss of picture quality in transmission course, USB interface is supported plug-and-play feature, and multipotency is connected into 127 USB device simultaneously, is easy to expansion.When pick-up unit of the present invention makes detection system work, sorting and warning function that the picked-up of subframe loading and unloading, weld image, subframe weld qualified unacceptable product accomplish without any letup, detect the influence that not changed by surround lighting, be suitable for the on-line quick detection of production line.Change corresponding mounting bracket, other automobile weldment that can be used for outside the automobile accessory frame detects, and also can be used for other industry weldment and detect.
Description of drawings:
Fig. 1 forms and the workflow synoptic diagram for active infrared CCD weld seam detection device one-piece construction of the present invention.
Fig. 2 is that CCD camera of the present invention connects the topological structure synoptic diagram.
Fig. 3 is the active infrared CCD weld seam detection device for mechanical construction profile figure that the present invention is based on usb bus.
Among Fig. 3,1 is active infrared, and 2 is subframe, and 3 is register pin, and 4 are the lifting cylinder, and 5 is column, and 6 for detecting frame.
Embodiment:
Below in conjunction with accompanying drawing technical scheme of the present invention is further described.
Pick-up unit one-piece construction of the present invention is formed as shown in Figure 1, mainly comprises industrial control computer, image collection module, input and output (I/O) signaling module and gear train module.Image collection module mainly comprises CCD camera and infrared light supply.Can reequip the common CCD camera, the special-purpose optical filtering of band infrared CCD, the transmission near infrared light makes it become the active infrared camera that has infrared light supply.The CCD camera links to each other with industrial control computer as management system by USB interface.Each camera is aimed at each bar weld seam of required detection respectively.For the automobile accessory frame weld seam detection, there are 21 cameras to aim at 21 weld seams of required detection on the subframe respectively.The network integration device HUB of USB has 5V voltage, can maximum provide the electric current of 500mA, so the CCD camera adopts directly USB HUB that power supply is provided in this device, and external power supply no longer.Selected USB interface meets the USB2.0 standard, so image transmission reaches as high as the speed of 480Mbps, when guaranteeing system works, and the fast and stable transmission of weld image.Infrared light supply is selected infrarede emitting diode, the special-purpose optical filtering of CCD shooting headband infrared CCD, and the transmission near infrared light, by visible light, the variation of surround lighting can not influence the image quality of infrared CCD like this.
Input and output I/O signaling module is made of I/O integrated circuit board, drive plate, alarm lamp, pneumatic valve, lifting cylinder and reducing motor.The I/O integrated circuit board is inserted in the computing machine, and alarm lamp, pneumatic valve, lifting cylinder and reducing motor link to each other with the I/O integrated circuit board by drive plate respectively.
The transmission control module comprises workpiece kinematic train, raceway, motor reducer and frame.Raceway, motor reducer and frame link to each other with the workpiece kinematic train, and the workpiece kinematic train links to each other with the I/O integrated circuit board.
Device is provided with matched auxiliaring equipments such as display, keyboard, printer and display alarm in addition.
Fig. 2 is that CCD camera of the present invention connects the topological structure synoptic diagram.
As shown in Figure 2, CCD camera of the present invention links to each other with industrial control computer by USB interface.Each camera is aimed at each bar weld seam of required detection respectively, and all cameras are expanded connection by the hub of USB.
Fig. 3 is a physical construction outside drawing of the present invention.As shown in Figure 3,1 is active infrared CCD, is made of infrared light supply and CCD, 2 is subframe, is detected workpiece, and 3 is register pin, be used for the detection and location of detected workpiece (subframe), 4 for the lifting cylinder, is used for lifting and decline subframe during work, and 5 is column, be used for fixing infrared CCD, 6 for detecting frame, is fixed in working position, and other parts all are satisfied with on the frame.
The present invention is used for detecting the geometric parameters such as length, width and position deviation of 21 main on secondary car frame weld seams, and judges the welding quality of subframe with this.
The course of work of weld seam detection is as follows:
1, subframe 2 is installed on the detection frame 6, operation detects software on industrial computer.
2, detect the signal that puts in place of subframe 4 by the I/O module, determine whether subframe 2 puts in place, after detecting subframe 2 and putting in place, by 4 motions of I/O module controls lifting cylinder, lifting cylinder 4 is gone up subframe 2, makes it to navigate in 21 active infrared CCD1 camera sensing ranges by register pin 3.
3, detect 21 cameras of software automatic switchover, and open infrared light supply, obtain the weld seam infrared image.
4, handle infrared image, analyze 21 weld seams of identification, and provide the result.
5, by 4 motions of I/O module controls lifting cylinder, drive subframe 4 and descend, at last according to recognition result, respectively subframe is transported to qualified raceway and defective raceway.The workpiece kinematic train is used for installing and unloading subframe, adopts the carrier bar transmission, and is steadily convenient when making the subframe loading and unloading.
Claims (2)
1, a kind of active infrared CCD weld seam detection device, comprise industrial control computer, image collection module, input/output signal module and transmission control module, it is characterized in that image collection module comprises the CCD camera and the infrared light supply of the special-purpose optical filtering of band infrared CCD, each camera is aimed at each bar weld seam of required detection respectively, all cameras are connected with expanding as the industrial control computer of management system by the hub of USB, the input/output signal module is by the I/O integrated circuit board, drive plate, alarm lamp, pneumatic valve, lifting cylinder and reducing motor constitute, the I/O integrated circuit board is inserted in the computing machine, alarm lamp, pneumatic valve, the lifting cylinder links to each other with the I/O integrated circuit board by drive plate respectively with reducing motor, the transmission control module comprises the workpiece kinematic train, raceway, motor reducer and frame, raceway, motor reducer links to each other with the workpiece kinematic train with frame, and the workpiece kinematic train links to each other with the I/O integrated circuit board.
2, according to the active infrared CCD weld seam detection device of claim 1, it is characterized in that described CCD camera has 21, directly adopt USB HUB that power supply is provided, selected USB interface meets the USB2.0 standard, the image transmission reaches as high as the speed of 480Mbps, and infrared light supply is selected infrarede emitting diode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101093522A CN1546996A (en) | 2003-12-12 | 2003-12-12 | Active infrared CCD weld seam detecting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2003101093522A CN1546996A (en) | 2003-12-12 | 2003-12-12 | Active infrared CCD weld seam detecting device |
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| CN1546996A true CN1546996A (en) | 2004-11-17 |
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| CNA2003101093522A Pending CN1546996A (en) | 2003-12-12 | 2003-12-12 | Active infrared CCD weld seam detecting device |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102143379A (en) * | 2011-03-25 | 2011-08-03 | 东北大学 | Reliability detection device for automatic switchover filter disc of vidicon and control method thereof |
| CN102175309A (en) * | 2011-03-01 | 2011-09-07 | 飞迅科技(苏州)有限公司 | Equipment for detecting luminance of multimedia control panel indicating lamp for automobile |
| CN102721699A (en) * | 2012-06-06 | 2012-10-10 | 朱保凌 | Non-destructive detection system for high-definition probe |
| CN103033343A (en) * | 2012-12-13 | 2013-04-10 | 京东方科技集团股份有限公司 | Method and device of detecting sub-pixel deviation in color filter |
| CN103424411A (en) * | 2013-08-12 | 2013-12-04 | 昆明理工大学 | Automatic detecting system for welding seam |
| CN104949982A (en) * | 2015-07-09 | 2015-09-30 | 广州超音速自动化科技股份有限公司 | Household appliance appearance detecting device |
| CN105044112A (en) * | 2015-08-10 | 2015-11-11 | 苏州听毅华自动化设备有限公司 | Pipe welding line detection device |
| CN104280399B (en) * | 2013-07-08 | 2017-03-22 | 珠海格力电器股份有限公司 | Pipe welding line on-line detection device |
| CN107803606A (en) * | 2017-10-13 | 2018-03-16 | 上海交通大学 | A kind of detection method for quality of welding line and device based on overall process mark |
| CN109483107A (en) * | 2018-12-29 | 2019-03-19 | 朱清 | A kind of weld seam intelligent online detection device based on Multi-source Information Fusion |
| CN112192043A (en) * | 2020-10-09 | 2021-01-08 | 吉林大学 | Automatic connecting rod grooving mechanism for machining connecting rod cracking groove |
| CN112711240A (en) * | 2021-01-08 | 2021-04-27 | 昆山福聚禄精密机械有限公司 | Error correction preventing system for part production and processing based on CCD camera |
| CN115452863A (en) * | 2022-09-16 | 2022-12-09 | 沧州北方散热器股份有限公司 | Auxiliary frame welding detection equipment and detection method |
-
2003
- 2003-12-12 CN CNA2003101093522A patent/CN1546996A/en active Pending
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102175309A (en) * | 2011-03-01 | 2011-09-07 | 飞迅科技(苏州)有限公司 | Equipment for detecting luminance of multimedia control panel indicating lamp for automobile |
| CN102143379A (en) * | 2011-03-25 | 2011-08-03 | 东北大学 | Reliability detection device for automatic switchover filter disc of vidicon and control method thereof |
| CN102143379B (en) * | 2011-03-25 | 2012-09-05 | 东北大学 | Reliability detection device for automatic switchover filter disc of vidicon and control method thereof |
| CN102721699A (en) * | 2012-06-06 | 2012-10-10 | 朱保凌 | Non-destructive detection system for high-definition probe |
| CN103033343A (en) * | 2012-12-13 | 2013-04-10 | 京东方科技集团股份有限公司 | Method and device of detecting sub-pixel deviation in color filter |
| CN104280399B (en) * | 2013-07-08 | 2017-03-22 | 珠海格力电器股份有限公司 | Pipe welding line on-line detection device |
| CN103424411B (en) * | 2013-08-12 | 2016-04-20 | 昆明理工大学 | A kind of weld seam automatic checkout system |
| CN103424411A (en) * | 2013-08-12 | 2013-12-04 | 昆明理工大学 | Automatic detecting system for welding seam |
| CN104949982A (en) * | 2015-07-09 | 2015-09-30 | 广州超音速自动化科技股份有限公司 | Household appliance appearance detecting device |
| CN105044112A (en) * | 2015-08-10 | 2015-11-11 | 苏州听毅华自动化设备有限公司 | Pipe welding line detection device |
| CN107803606A (en) * | 2017-10-13 | 2018-03-16 | 上海交通大学 | A kind of detection method for quality of welding line and device based on overall process mark |
| CN109483107A (en) * | 2018-12-29 | 2019-03-19 | 朱清 | A kind of weld seam intelligent online detection device based on Multi-source Information Fusion |
| CN112192043A (en) * | 2020-10-09 | 2021-01-08 | 吉林大学 | Automatic connecting rod grooving mechanism for machining connecting rod cracking groove |
| CN112711240A (en) * | 2021-01-08 | 2021-04-27 | 昆山福聚禄精密机械有限公司 | Error correction preventing system for part production and processing based on CCD camera |
| CN115452863A (en) * | 2022-09-16 | 2022-12-09 | 沧州北方散热器股份有限公司 | Auxiliary frame welding detection equipment and detection method |
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