CN104535583A - Automatic optical detection equipment and method - Google Patents
Automatic optical detection equipment and method Download PDFInfo
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- CN104535583A CN104535583A CN201410831526.4A CN201410831526A CN104535583A CN 104535583 A CN104535583 A CN 104535583A CN 201410831526 A CN201410831526 A CN 201410831526A CN 104535583 A CN104535583 A CN 104535583A
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Abstract
The invention discloses automatic optical detection equipment, and relates to the technical field of optical detection. The equipment comprises a movement module, a movement control module, an image collecting module installed on the movement module, a light source illumination module and an image processing module, the movement control module is used for controlling the movement manner of the image collecting module on the movement module, the movement manner is that the image collecting module sequentially passes by set target positions according to a set non-zero speed, and the image collecting module collects images when passing by the target positions; the light source illumination module provides a light source for the image collecting module; the image processing module is used for processing and comparing the collected images of a workpiece to be detected; the invention further discloses an automatic optical detection method, and the image collecting module collects the images at the non-zero speed. The automatic optical detection equipment and the method disclosed by the invention can be used for solving the problems of low CPU utilization rate and low detection efficiency of the original image processing modules.
Description
Technical field
The present invention relates to technical field of optical detection, particularly relate to a kind of automated optical detection equipment and method.
Background technology
Automated optical detection equipment (Automatic Optical Inspection, hereinafter referred to as AOI) be based on simulation human eye, run machine vision technique, in welding technology is produced, replace people, detect the efficient smart machine of one of the common deficiency in PCBA.
AOI module comprises the image capture module etc. of computing machine, motion-control module based on XY platform, source illumination module, industrial camera.AOI principle is: by XY platform, industrial camera and light source are moved to assigned address wait on PCB and come to a complete stop, then light source is opened, light is radiated on pcb board and reflexes to industrial camera, the sensitive chip of industrial camera obtains according to the power of reflected light the image reflecting element characteristics, obtains testing result after then adopting image processing techniques to carry out process comparison to image by computing machine.The detection efficiency of AOI and the movement velocity of XY platform, the picking rate of industrial camera, the processing speed of computing machine etc. are closely bound up.
After image shot by camera by image pick-up card by image transmitting in calculator memory, then computing machine obtains image and carries out analyzing and processing from internal memory, and under multithreading, these steps are all synchronous operation.If motion is taken pictures, process is than very fast, and the slow-footed words of computer disposal, and in internal memory, image will be deposited more and more, when interior being filled with time, motion process will stop wait for computer disposal fall a part of image free time go out internal memory after continue motion again; Slow and the fireballing words of computer disposal if motion is taken pictures, computing machine is just in idle condition after complete for image procossing in internal memory, and wait for that image pick-up card transmits image to internal memory, the CPU usage of this computer-chronograph is very low.Early stage when computer disposal speed is lower, often can image processing speed not catch up with, after causing in internal memory image completely, XY platform needs to wait for that computer disposal is complete and could continue motion and take pictures.Along with the continuous lifting of computing power, the processing speed of CPU is more and more faster, often occur that computing machine waits for that image pick-up card transmits image to internal memory at present, computer CPU utilization rate is lower, waiting for the image that XY Platform movement is taken pictures, this just seems that the performance of computing machine is not brought into play completely, and detection efficiency also has larger room for promotion.
In prior art, motion module is in testing process, move towards target location from current location zero velocity, first accelerate to maximal rate, then in close to target location, zero is decelerated to, wait until again platform come to a complete stop just start to open the light stabilities such as light source after open camera and take pictures, transmitting image is to computer disposal.The rear platform that these processes are over moves towards next target location again from zero velocity, and to the last a detection position completes and so forth.XY platform needs to decelerate to target location again from zero accelerated motion to maximal rate at every turn to be stopped, and in this process, elapsed time is long, and the vibrations of machine are larger.Do not stop if taking pictures when finding a kind of mode of motion to make platform move to target location in testing process, so just greatly reduce the Acceleration and deceleration time in testing process, improve detection efficiency, also reduce the vibrations of machine simultaneously, improve stability and the life-span of machine.
Summary of the invention
One object of the present invention is to provide a kind of automated optical detection equipment, can improve image acquisition speed, speed up processing, improves detection efficiency.
Another object of the present invention is to provide a kind of automatic optical detection method, can improve image acquisition speed, speed up processing, improves detection efficiency.
For reaching this object, the present invention by the following technical solutions:
A kind of automated optical detection equipment, comprise motion module, motion-control module, be installed on motion module epigraph acquisition module and source illumination module and image processing module, the mode of motion of the image capture module of described motion-control module in controlled motion module, described mode of motion is that described image capture module will according to setting speed successively through the target location of setting, described setting speed is non-vanishing, is sent to signal receiving end on image capture module through the described motion-control module in described target location by gathering the signal of image; Described source illumination module provides light source for image capture module; Described image processing module for the treatment of, contrast the image of to be detected that collects, draw testing result.
Further technical scheme, described motion module is XY motion platform, and described motion-control module is XY motion platform control system.
Further technical scheme, image capture module comprises camera, and described camera is industrial camera.
Further technical scheme, described image processing module comprises computing machine.
Further technical scheme, described source illumination module is installed in described motion module, and described source illumination module comprises LED, and described LED adopts maximum current value.
A kind of automatic optical detection method utilizing described automatic optical detection device to realize comprises the following steps:
Image capture module in A, described motion module is according to described setting speed successively through the target location of setting, and through described target location, image capture module is treated detection piece and carried out image acquisition;
B, described image processing module process the image that image capture module collects to be detected, and contrast with the image of specification product, draw detection architecture.
Further technical scheme, in described steps A, before image acquisition, source illumination module adopts maximum brightness value to irradiate to be detected.
Further technical scheme, the image capture module in described steps A comprises industrial camera, and source illumination module comprises LED, and the electric current flowing through LED is adjusted to maximal value; When arriving target location, motion-control module sends one and gathers the signal of image and be sent to signal receiving end on image capture module, described industrial camera exposes instantaneously, and the sensitive chip in industrial camera obtains according to the power of reflected light the image reflecting to be detected feature.
Further technical scheme, the image processing module in described step B comprises computing machine, in image processing process, adopts image processing techniques to process described image capture module successively and passes to image in calculator memory.
Further technical scheme, in the movement velocity of the image capture module in described steps A and image acquisition speed and described step B, the image processing speed of image processing module is independent of each other.
Beneficial effect of the present invention:
A kind of automated optical detection equipment provided by the invention and method, automated optical detection equipment comprises image capture module, under the non-vanishing motion state of speed, the method that detection piece carries out gathering image is treated by making image capture module, decrease the time gathering image, thus make full use of the utilization rate of image processing module, speed up processing, improves detection efficiency.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of the automatic optical detection method that the specific embodiment of the invention provides.
Embodiment
Technical scheme of the present invention is further illustrated by embodiment below in conjunction with accompanying drawing.
A kind of automated optical detection equipment, comprise motion module, motion-control module, be installed on motion module epigraph acquisition module, source illumination module and image processing module, the mode of motion of the image capture module of motion-control module in controlled motion module, mode of motion is that described light image acquisition module will according to setting speed successively through the target location of setting, wherein setting speed is non-vanishing, through target location, the signal gathering image is sent to the signal receiving end on image capture module by described motion-control module, motion module does not need to stop in image acquisition process, decrease Acceleration and deceleration time, thus reduce the mass motion time, reach the object of rapid movement, described source illumination module provides brightness for image capture module, described image processing module for the treatment of, contrast the image of to be detected that collects, draw testing result.Because during the collection image of target location, image capture module speed is non-vanishing, equipment held stationary motion state in whole motion process, the vibration amplitude of integral device more greatly reduced, and stability and the component life of equipment greatly improve.
Preferably, motion module is XY motion platform, and motion-control module is XY motion platform control system.
Image capture module comprises camera, described camera is the industrial camera of the large pixel dimension of the high frame per second of high speed, allows camera expose in the moment receiving motion module and send signal, because motion module during camera exposure is also in motion, so the time shutter is extremely short, the image collected can not be fuzzy.
Image processing module comprises computing machine, and computing machine obtains testing result after adopting image processing techniques to carry out process comparison to image.
Source illumination module is also installed in motion module, and preferably, source illumination module is arranged on the industrial camera of image capture module, makes light source follow camera and moves, and makes to be detected to need the brightness in the region gathering image higher.Source illumination module comprises LED, and described LED adopts maximum current value in maximum current allowed band, thus increases light-source brightness, and camera so just can be enable to collect the image of qualified brightness thus normally detect.
Utilize the automatic optical detection method that above-mentioned automatic optical detection device realizes, as shown in Figure 1, comprise the following steps:
Image capture module in A, motion module is according to setting speed successively through the target location of setting, and through described target location, image capture module is treated detection piece and carried out image acquisition;
B, image processing module process the image that image capture module collects to be detected, and contrast with the image of specification product, draw detection architecture.
Image capture module in steps A comprises industrial camera, and source illumination module comprises LED, is adjusted to maximal value by what flow through the electric current of LED; When arriving target location, motion-control module sends one and gathers the signal of image and be sent to signal receiving end on image capture module, described industrial camera exposes instantaneously, and the sensitive chip in industrial camera obtains according to the power of reflected light the image reflecting to be detected feature.
Image processing module in step B comprises computing machine, in image processing process, adopts image processing techniques to process described image capture module successively and passes to image in calculator memory.
In the movement velocity of the image capture module in steps A and image acquisition speed and step B, the image processing speed of image processing module is independent of each other.Image procossing and motion control and image acquisition are distinguished and are come by the present invention, image processing speed can not because of the movement velocity of image capture module or image acquisition speed comparatively slow and wait for; The movement velocity of image capture module or image acquisition speed can not be waited for because image processing speed is slow, and steps A and step B process correspondingly task separately in time, can increase work efficiency.
Image acquisition speed greatly promotes, thus makes full use of the CPU usage of computing machine, speed up processing, improves detection efficiency.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
Claims (10)
1. an automated optical detection equipment, it is characterized in that, comprise motion module, motion-control module, be installed on motion module epigraph acquisition module and source illumination module and image processing module, the mode of motion of the image capture module of described motion-control module in controlled motion module, described mode of motion is that described image capture module will according to setting speed successively through the target location of setting, described setting speed is non-vanishing, signal receiving end on image capture module is sent to by gathering the signal of image through the described motion-control module in described target location, described source illumination module provides light source for image capture module, described image processing module for the treatment of, contrast the image of to be detected that collects, draw testing result.
2. automated optical detection equipment according to claim 1, is characterized in that, described motion module is XY motion platform, and described motion-control module is XY motion platform control system.
3. automated optical detection equipment according to claim 1, is characterized in that, image capture module comprises camera, and described camera is industrial camera.
4. automated optical detection equipment according to claim 1, is characterized in that, described image processing module comprises computing machine.
5. automated optical detection equipment according to claim 1, is characterized in that, described source illumination module is installed in described motion module, and described source illumination module comprises LED, and described LED adopts maximum current value.
6. the automatic optical detection method utilizing the arbitrary described automatic optical detection device of claim 1-5 to realize, is characterized in that, said method comprising the steps of:
Image capture module in A, described motion module is according to described setting speed successively through the target location of setting, and through described target location, image capture module is treated detection piece and carried out image acquisition;
B, described image processing module process the image that image capture module collects to be detected, and contrast with the image of specification product, draw detection architecture.
7. automatic optical detection method according to claim 6, is characterized in that, in described steps A, before image acquisition, source illumination module adopts maximum brightness value to irradiate to be detected.
8. automatic optical detection method according to claim 6, is characterized in that, the image capture module in described steps A comprises industrial camera, and source illumination module comprises LED, and the electric current flowing through LED is adjusted to maximal value; When arriving target location, motion-control module sends one and gathers the signal of image and be sent to signal receiving end on image capture module, described industrial camera exposes instantaneously, and the sensitive chip in industrial camera obtains according to the power of reflected light the image reflecting to be detected feature.
9. automatic optical detection method according to claim 6, it is characterized in that, image processing module in described step B comprises computing machine, in image processing process, adopts image processing techniques to process described image capture module successively and passes to image in calculator memory.
10. automatic optical detection method according to claim 6, is characterized in that, in the movement velocity of the image capture module in described steps A and image acquisition speed and described step B, the image processing speed of image processing module is independent of each other.
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| CN109493318A (en) * | 2018-10-09 | 2019-03-19 | 广东仙童智能机器人科技有限公司 | A kind of image parallel processing method, device and computer storage medium |
| CN112998656A (en) * | 2021-02-24 | 2021-06-22 | 广东工业大学 | Living body fluorescence imaging system capable of intelligently tracking target and control method thereof |
| CN113075233A (en) * | 2021-04-12 | 2021-07-06 | 长春光华微电子设备工程中心有限公司 | Probe mark detection method for probe station |
| CN113341873A (en) * | 2021-08-06 | 2021-09-03 | 武汉中导光电设备有限公司 | Motion platform control system and control method of optical detection equipment |
| CN114414477A (en) * | 2021-12-21 | 2022-04-29 | 苏州天准科技股份有限公司 | Multi-angle detection device for motor vehicle parts and assembly device |
| CN116934745A (en) * | 2023-09-14 | 2023-10-24 | 创新奇智(浙江)科技有限公司 | Quality detection method and detection system for electronic component plugging clip |
| CN117054446A (en) * | 2023-08-16 | 2023-11-14 | 迈沐智能科技(南京)有限公司 | Comprehensive detection device for photovoltaic cell screen plate |
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