CN114339011A - Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source - Google Patents
Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source Download PDFInfo
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- CN114339011A CN114339011A CN202210193003.6A CN202210193003A CN114339011A CN 114339011 A CN114339011 A CN 114339011A CN 202210193003 A CN202210193003 A CN 202210193003A CN 114339011 A CN114339011 A CN 114339011A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/64—Computer-aided capture of images, e.g. transfer from script file into camera, check of taken image quality, advice or proposal for image composition or decision on when to take image
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/60—Control of cameras or camera modules
- H04N23/67—Focus control based on electronic image sensor signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/70—Circuitry for compensating brightness variation in the scene
- H04N23/74—Circuitry for compensating brightness variation in the scene by influencing the scene brightness using illuminating means
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Abstract
The invention discloses an image acquisition method and device for synchronous trigger control of a high-speed linear array camera and a high-intensity light source, belonging to the technical field of machine vision, comprising a shell and being characterized in that: the utility model discloses a high-intensity linear array camera, including shell, linear light source emitting module, self-adaptation pulse signal synchronous generation module, power conversion module and six groups of interfaces, the one end of shell is provided with a camera lens section of thick bamboo, the inside of shell is provided with the mainboard, connect gradually linear array camera, camera lens, high-intensity light source generator, linear light source emitting module, self-adaptation pulse signal synchronous generation module, power conversion module and six groups of interfaces on the mainboard, the outside of shell is connected with outside trigger sensor, the adjustable generater of pulse, light source power adjustment module and linear parameter adjustment module through the wire. The invention can realize the function of instantaneous synchronization of the light source and the camera imaging in the acquisition of the high-speed linear array camera at the shutter exposure moment, and can ensure the definition of the acquired image and the balance and consistency of histogram distribution in the acquisition of high-frame-rate images.
Description
Technical Field
The invention belongs to the technical field of machine vision, and particularly relates to an image acquisition method and an image acquisition device for synchronous trigger control of a high-speed linear array camera and a high-intensity light source.
Background
The machine vision technology is widely applied in the field of industrial detection, and the current medium-low speed image acquisition system can basically realize the acquisition of high-definition and high-quality images by using an area-array camera and a linear array camera. With the application of high-speed processing and high-speed assembly lines in large batch and the requirements of target detection and defect detection, high-speed image acquisition especially needs to acquire images with high quality, high definition and uniform illumination and imaging.
However, in the current high-speed image acquisition system, it is difficult to find a synchronous acquisition control method and device for a high-speed line camera, which is convenient for field use, has high imaging quality and can be flexibly adjusted.
Disclosure of Invention
The invention aims to provide an image acquisition method and an image acquisition device for synchronous trigger control of a high-speed linear array camera and a high-intensity light source, which aim to solve the problems in the prior art in the background technology.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides a high-speed linear array camera and high intensity light source trigger control's image acquisition device in step, includes the shell, its characterized in that: the utility model discloses a high-intensity linear array camera, including shell, linear light source emitting module, self-adaptation pulse signal synchronous generation module, power conversion module and six groups of interfaces, the one end of shell is provided with a camera lens section of thick bamboo, the inside of shell is provided with the mainboard, connect gradually linear array camera, camera lens, high-intensity light source generator, linear light source emitting module, self-adaptation pulse signal synchronous generation module, power conversion module and six groups of interfaces on the mainboard, the outside of shell is connected with outside trigger sensor, the adjustable generater of pulse, light source power adjustment module and linear parameter adjustment module through the wire.
Preferably, the other end of the shell is sequentially provided with an external trigger sensor interface, a power supply interface and a pulse adjustable generator interface, and the external trigger sensor interface, the power supply interface and the pulse adjustable generator interface correspond to the interfaces on the mainboard.
Preferably, a linear parameter adjusting interface and a light source power adjusting interface are sequentially arranged on the outer wall of one side of the shell, and the linear parameter adjusting interface and the light source power adjusting interface correspond to the interfaces on the mainboard.
Preferably, an image transmission interface is arranged on the outer wall of the other side of the shell, and the image transmission interface corresponds to an interface on the mainboard.
Preferably, the power conversion module corresponds to a power interface, the line-scan camera corresponds to a lens, and the high-intensity light source generator corresponds to the light source power adjustment interface.
Preferably, the linear light source emitting module is arranged corresponding to the linear parameter adjusting interface, and the adaptive pulse signal synchronous generating module is arranged corresponding to the pulse adjustable generator interface.
An image acquisition method for synchronous trigger control of a high-speed linear array camera and a high-intensity light source is characterized in that: the method comprises the following steps:
s1, externally connecting the integral device with a power supply through a power interface, supplying power to the linear array camera, the linear light source emitting module and the self-adaptive pulse signal synchronous generating module by using 24V, 48V, 110V, 220V, 380V or other power supply conversion modules and 5V, 12V and 24V direct current power supplies, and entering subsequent operation after the indicator lamps of the modules work normally;
s2, turning on the high-intensity light source generator, adjusting the linear light source emitting module according to the target object, accessing the related equipment through the linear parameter adjusting interface and the light source power adjusting interface, setting the light source intensity and parameters required by the site, and supplementing light to the target object;
s3, opening a linear array camera acquisition interface, connecting the linear array camera acquisition interface to a computer acquisition card through an image transmission interface, adjusting the camera angle and the lens aperture by referring to the image brightness of a software interface, focusing and imaging according to the distance of a target object, fixing the distance of an acquisition system and fixing the lens parameters;
s4, selecting an external trigger sensor or an adjustable pulse generator according to the field use requirement, and inputting a trigger pulse signal to the self-adaptive pulse signal synchronous generation module; the self-adaptive pulse signal synchronous generation module generates an input pulse signal into a self-adaptive square wave pulse, and simultaneously ensures that a rising edge pulse signal and a falling edge pulse signal triggered by the linear array camera are ensured, wherein the time of one trigger period is less than the trigger time of a light source;
s, after the whole acquisition system device is adjusted, formal linear array camera image acquisition is prepared, the position, camera parameters, lens parameters, light source parameters and the like of the device are fixed and unchanged in the period, after the image acquisition is finished, image data are stored, linear array camera software is closed, a high-intensity light source generator is closed, a power supply module is closed, and synchronous acquisition of the high-speed linear array camera is completed.
The invention has the technical effects and advantages that: compared with the prior art, the image acquisition method and the device thereof for synchronous trigger control of the high-speed linear array camera and the high-intensity light source have the following advantages:
1. the invention can realize the function of instantaneous synchronization of the light source and the camera imaging in the acquisition of the high-speed linear array camera at the shutter exposure moment, and can ensure the definition of the acquired image and the balance and consistency of histogram distribution in the acquisition of high-frame-rate images. The problem that complete synchronization of a light source and a camera cannot be guaranteed in a high-speed acquisition state in the current image acquisition can be solved, the consistency and the standard of the acquired images are guaranteed, and a foundation is provided for subsequent image processing and high-precision detection.
2. In an industrial field, in high-frame rate acquisition of a high-speed linear array camera, an external trigger sensor cannot perform high-precision pulse triggering on the high-speed linear array camera due to low coding resolution, so that the problem of image frame loss is solved, and the integrity of acquired images is ensured.
3. The self-adaptive pulse signal synchronous generation module designed by the invention has two trigger modes, provides a more flexible use mode for field use, can utilize an external trigger sensor to carry out variable speed self-adaptive image acquisition, and can also utilize user-defined parameters to get rid of the constraint of the external trigger sensor and carry out constant speed synchronous triggered image acquisition on a moving object with constant speed.
4. The high-intensity light source generator and the linear light source emitting module designed by the invention can be flexibly adjusted, and can adjust the light source intensity and linear parameters according to different field environments, so that the high-intensity light source generator and the linear light source emitting module have wider applicability and higher efficiency, can realize the function of one machine with multiple purposes, and have stronger expansibility.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic structural view of the housing of the present invention;
FIG. 3 is a schematic structural diagram of a motherboard according to the present invention;
FIG. 4 is a schematic diagram of the apparatus and method of the present invention.
In the figure: 1. a housing; 2. a lens barrel; 3. a main board; 4. a line camera; 5. a lens; 6. a high intensity light source generator; 7. a linear light source emitting module; 8. a self-adaptive pulse signal synchronous generation module; 9. a power conversion module; 10. an interface; 11. an external trigger sensor interface; 12. a power interface; 13. a pulse adjustable generator interface; 14. a linear parameter adjustment interface; 15. a light source power adjustment interface; 16. an image transmission interface.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The specific embodiments described herein are merely illustrative of the invention and do not delimit the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention provides an image acquisition device for synchronous trigger control of a high-speed linear array camera and a high-intensity light source, which comprises a shell 1 and is characterized in that: one end of the shell 1 is provided with a lens barrel 2, a mainboard 3 is arranged in the shell 1, a linear array camera 4, a lens 5, a high-intensity light source generator 6, a linear light source emitting module 7, a self-adaptive pulse signal synchronous generating module 8, a power supply conversion module 9 and six groups of interfaces 10 are sequentially connected on the mainboard 3, and an external trigger sensor, a pulse adjustable generator, a light source power adjusting module and a linear parameter adjusting module are connected outside the shell 1 through leads.
The other end of the shell 1 is sequentially provided with an external trigger sensor interface 11, a power supply interface 12 and a pulse adjustable generator interface 13, and the external trigger sensor interface 11, the power supply interface 12 and the pulse adjustable generator interface 13 correspond to the interface 10 on the mainboard 3.
The outer wall of one side of the shell 1 is sequentially provided with a linear parameter adjusting interface 14 and a light source power adjusting interface 15, and the linear parameter adjusting interface 14 and the light source power adjusting interface 15 correspond to the interface 10 on the mainboard 3.
An image transmission interface 16 is arranged on the outer wall of the other side of the shell 1, and the image transmission interface 16 corresponds to the interface 10 on the mainboard 3.
The power conversion module 9 corresponds to the power interface 12, the linear array camera 4 corresponds to the lens 5, and the high-intensity light source generator 6 corresponds to the light source power adjusting interface 15.
The linear light source emitting module 7 is arranged corresponding to the linear parameter adjusting interface 14, and the adaptive pulse signal synchronous generating module 8 is arranged corresponding to the pulse adjustable generator interface 13.
An image acquisition method for synchronous trigger control of a high-speed linear array camera and a high-intensity light source is characterized in that: the method comprises the following steps:
s1, externally connecting a power supply to the whole device through a power supply interface 12, transforming or inverting the voltage of 24V, 48V, 110V, 220V, 380V or other voltage into 5V, 12V and 24V direct current power supply through a power supply conversion module 9, supplying power to the linear array camera 4, the linear light source emitting module 7 and the self-adaptive pulse signal synchronous generating module 8, and entering subsequent operation after the indicator lamps of the modules work normally;
s2, turning on the high-intensity light source generator 8, adjusting the linear light source emitting module 7 according to the target object, accessing the relevant equipment through the linear parameter adjusting interface 14 and the light source power adjusting interface 15, setting the light source intensity and parameters required by the site, and supplementing light to the target object;
s3, opening a linear array camera 4 acquisition interface, connecting the acquisition interface to a computer acquisition card through an image transmission interface 16, adjusting the camera angle and the lens aperture by referring to the image brightness of a software interface, focusing and imaging according to the distance of a target object, fixing the distance of an acquisition system and fixing the lens parameters;
s4, selecting an external trigger sensor or an adjustable pulse generator according to the field use requirement, and inputting a trigger pulse signal to the self-adaptive pulse signal synchronous generation module 8; the self-adaptive pulse signal synchronous generation module 8 is used for generating self-adaptive square wave pulses from the input pulse signals and simultaneously ensuring that the linear array camera 4 triggers a rising edge pulse signal and a falling edge pulse signal, and the time of one triggering period is less than the triggering time of a light source;
s5, after the integral acquisition system device is adjusted, the formal linear array camera 4 is prepared for image acquisition, the position, camera parameters, lens parameters, light source parameters and the like of the device are fixed and unchanged in the period, after the image acquisition is finished, image data are stored, the linear array camera 4 software is closed, the high-intensity light source generator 6 is closed, the power supply module is closed, and the synchronous acquisition of the high-speed linear array camera is completed.
Example 1
And S1, acquiring an image by using the high-speed linear array camera 4, wherein the target is scanning type high-speed image acquisition aiming at a high-speed moving object. In order to ensure the instantaneous image acquisition of the high-speed moving target, the high-speed linear array camera 4 above 10KHz is required to be selected, namely the instantaneous camera exposure imaging within 0.1ms is required to be performed, and the image is acquired. Because a large target surface high-speed linear array photosensitive chip is selected, a large-aperture lens 5 is matched for optical imaging.
S2, because the high-speed linear array camera 4 needs to collect images within 0.1ms or even shorter time, and the instantaneous light flux is small, the high-intensity linear light source is designed to supplement light synchronously, and the definition and the histogram distribution uniformity of the images collected by the linear array camera 4 are ensured.
S3, the high-speed linear array camera 4 generally needs pulse signals to trigger and acquire linear array images, and then the linear array images are spliced into two-dimensional images, so that an external trigger sensor and a pulse adjustable generator are designed in the triggering mode of the invention in consideration of actual requirements. The linear array camera 4 and the linear light source are synchronously triggered, so that high-quality images are acquired while instant light supplement is guaranteed.
And S4, the image data collected by the high-speed linear array camera 4 is transmitted and stored through the designed image transmission interface 16.
Example 2
And S1, the high-intensity linear light source generator 6 is used for synchronously supplementing light to the target moving at high speed and is used for matching with the high-speed linear array camera 4 to acquire a clear high-quality image. The invention designs a high-intensity light source generator 6 and a linear light source emitting module 7, wherein the high-intensity light source generator 6 is used for generating a 0-50W strong light source (even higher), and the invention takes a laser light source as an example to ensure that sufficient illumination is provided within 0.1ms or even shorter moment. Because the required instantaneous light flux amount is different due to different scene light rays and different acquisition speeds, the light source power adjusting module 15 is designed for flexibly adjusting the power of the light source, and is convenient to use on site. The problem that the strength of the current laser generator cannot be adjusted due to the fact that the power is fixed is solved.
S2, the high-intensity light source generator 6 sends the generated high-power light source to the linear light source emitting module 7, the module generates high-intensity light bands with different widths and different angle ranges and covers the target object to be detected, and the illuminance of the target imaging area in the urban and rural range of the high-speed linear array camera meets the requirement of the high-speed linear array camera above 10 KHz. The linear light source emitting module 7 can be controlled by the linear parameter adjusting module to adjust light sources with different angles and different widths, so that the problem that the linear parameters cannot be adjusted by the conventional laser generator is solved.
S3, a light source power adjusting module and a linear parameter adjusting module, which can be packaged together with the camera and the light source for integral control; and the remote control can be realized through a signal wire, so that the flexible installation and use of field equipment are facilitated.
Example 3
S1, the main function of the self-adaptive pulse signal synchronous generation module 8 is to control the synchronous triggering of the high-speed linear array camera and the linear light source, and ensure that high-quality image acquisition is realized within 0.1ms or even shorter moment. Particularly, the two pulse signals generated by the module ensure that the triggering time of the linear array camera 4 is less than the instant emitting time of the light source, so that the light source with enough intensity is supplemented at the moment of camera imaging. To achieve this, the adaptive pulse signal synchronization generation module 8 has two trigger modes:
(1) and synchronous trigger control of the external trigger sensor. The design is suitable for the condition of variable speed acquisition, such as belt transmission equipment, when the equipment is driven by a motor, an axle encoder is arranged on a shaft head of an electric appliance, the encoder generates a periodically-changed pulse signal along with the rotation of the motor, the periodically-changed pulse signal is input into a self-adaptive pulse signal synchronous generation module, and the two square wave pulse signals are generated and used for synchronously controlling a linear array camera and a linear light source.
(2) The pulses may regulate synchronous trigger control of the generator. The design is suitable for manual parameter setting control or image acquisition of uniform motion. When the movement of the target object is continuous and uniform, the use of an encoder can be omitted, and the two square wave pulse signals are generated by utilizing the synchronous triggering of the pulse adjustable generator of the invention and are used for synchronously controlling the linear array camera and the linear light source.
And S2, the self-adaptive pulse signal synchronous generation module 8 can perform frequency division or frequency multiplication processing on the trigger signal through a board card chip program to generate a plurality of paths or encrypted pulse signals for synchronous triggering of the high-speed linear array camera and the light source.
As shown in fig. 1-4:
a visual system consisting of a high-speed linear array camera 4 and a lens 5 is utilized to match with a high-intensity linear light source, the linear light source covers the whole target detection area, and the linear array camera 4 collects a target object through the lens 5. The high-speed linear array camera and the high-intensity light source are controlled by the self-adaptive pulse signal synchronous generation module 8, so that the high-speed linear array camera is synchronously triggered to carry out exposure imaging and image data acquisition in a shorter time within a short time of transmitting of the high-intensity linear light source, and an instant dynamic image of a high-speed moving target is acquired.
The imaging method and the imaging device can also generate an outgoing signal through an external trigger sensor, such as a rotary encoder, input the outgoing signal into the adaptive pulse signal synchronous generator, perform frequency division or frequency multiplication processing to generate a multi-channel trigger signal or a pulse signal with higher density, perform instant synchronous trigger on the high-speed linear array camera 4 and the high-intensity light source generator 6, and acquire images of high-speed moving targets.
The imaging method and device of the invention can also set pulse signals according to the camera trigger frequency required by the user through a pulse adjustable generator, such as a PCI board card or an embedded module, input the pulse signals to the adaptive pulse signal synchronous generation module 8 to perform frequency division or frequency multiplication processing to generate multi-path trigger signals or pulse signals with higher density, and perform instantaneous synchronous triggering on the high-speed linear array camera 4 and the high-intensity light source generator 6 for acquiring images of high-speed moving targets.
In the method and apparatus of the present invention, the designed light source power adjusting module 15 can perform power adjustment control on the high-intensity light source generator 6 according to different ambient brightness, for example, perform power adjustment of 0-50W on the high-power laser light source, so as to meet the field light requirement.
In the method and apparatus of the present invention, the designed linear parameter adjusting module can adjust the parameters emitted by the light source according to the imaging range requirement of the target object, for example: the width of the linear light source, the angle range of the linear light source and the like are more convenient for the linear array camera 4 to image and collect high-quality images.
The method and the device can be used for integral packaging, and the linear array camera 4, the lens 5, the high-intensity light source generator 6, the linear light source emitting module 7, the self-adaptive pulse signal synchronous generating module 8, the power supply conversion module 9 and the interface 10 are packaged in a box for dustproof and waterproof design. Meanwhile, an external trigger sensor interface 11, a pulse adjustable generator interface 13, a power supply interface 12, a linear parameter adjusting interface 14, a light source power adjusting interface 15 and an image transmission interface 16 are designed for more flexible field adjustment and use.
The invention designs two modes of synchronous triggering of a camera and a light source, flexible adjustment of the high-intensity light source, external triggering and pulse self-generation triggering, and is finally used for realizing the synchronous acquisition control of the high-speed linear array camera, aiming at the problems that in the acquisition of the high-speed linear array camera, the light supplement is instantly and continuously emitted by the high-intensity light source, the acquisition of the linear array camera cannot be adaptively and synchronously controlled, and the use limitation of an external trigger sensor is limited.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a high-speed linear array camera and high intensity light source trigger control's image acquisition device in step, includes shell (1), its characterized in that: the utility model discloses a camera module, including shell (1), mainboard (3), linear array camera (4), camera lens (5), high intensity light source generator (6), linear light source emission module (7), self-adaptation pulse signal synchronous generation module (8), power conversion module (9) and six group interfaces (10) have connected gradually on mainboard (3), the outside of shell (1) is connected with outside trigger sensor, the adjustable generater of pulse, light source power adjustment module and linear parameter adjustment module through the wire.
2. The image acquisition device synchronously triggered and controlled by the high-speed linear array camera and the high-intensity light source as claimed in claim 1, wherein: the other end of the shell (1) is sequentially provided with an external trigger sensor interface (11), a power supply interface (12) and an adjustable pulse generator interface (13), and the external trigger sensor interface (11), the power supply interface (12) and the adjustable pulse generator interface (13) correspond to the interface (10) on the mainboard (3).
3. The image acquisition device synchronously triggered and controlled by the high-speed linear array camera and the high-intensity light source as claimed in claim 2, wherein: the LED lamp is characterized in that a linear parameter adjusting interface (14) and a light source power adjusting interface (15) are sequentially arranged on the outer wall of one side of the shell (1), and the linear parameter adjusting interface (14) and the light source power adjusting interface (15) correspond to the interface (10) on the mainboard (3).
4. The image acquisition device synchronously triggered and controlled by the high-speed linear array camera and the high-intensity light source as claimed in claim 3, wherein: an image transmission interface (16) is arranged on the outer wall of the other side of the shell (1), and the image transmission interface (16) corresponds to the interface (10) on the mainboard (3).
5. The image acquisition device synchronously triggered and controlled by the high-speed linear array camera and the high-intensity light source as claimed in claim 4, wherein: the power conversion module (9) corresponds to the power interface (12), the linear array camera (4) corresponds to the lens (5), and the high-intensity light source generator (6) corresponds to the light source power adjusting interface (15).
6. The image acquisition device synchronously triggered and controlled by the high-speed linear array camera and the high-intensity light source as claimed in claim 5, wherein: the linear light source emitting module (7) is arranged corresponding to the linear parameter adjusting interface (14), and the self-adaptive pulse signal synchronous generating module (8) is arranged corresponding to the pulse adjustable generator interface (13).
7. An image acquisition method for synchronous trigger control of a high-speed linear array camera and a high-intensity light source is characterized in that: the method comprises the following steps:
s1, externally connecting a power supply to the whole device through a power supply interface (12), transforming or inverting the voltage of 24V, 48V, 110V, 220V, 380V or other voltage into 5V, 12V and 24V direct current power supply through a power supply conversion module (9), supplying power to a linear array camera (4), a linear light source emitting module (7) and a self-adaptive pulse signal synchronous generation module (8), and entering subsequent operation after indicator lamps of the modules work normally;
s2, turning on the high-intensity light source generator (6), adjusting the linear light source emitting module (7) according to the target object, accessing the relevant equipment through the linear parameter adjusting interface (14) and the light source power adjusting interface (15), setting the light source intensity and parameters required by the site, and supplementing light to the target object;
s3, opening a linear array camera (4) acquisition interface, connecting the acquisition interface to a computer acquisition card through an image transmission interface (16), adjusting the camera angle and the lens aperture by referring to the image brightness of a software interface, focusing and imaging according to the distance of a target object, fixing the acquisition system distance and fixing the lens parameters;
s4, selecting an external trigger sensor or an adjustable pulse generator according to the field use requirement, inputting a trigger pulse signal to the adaptive pulse signal synchronous generation module (8), generating an adaptive square wave pulse by the adaptive pulse signal synchronous generation module (8) according to the input pulse signal, and simultaneously ensuring that the time of one trigger period is less than the light source trigger time when a rising edge pulse signal and a falling edge pulse signal are triggered by the linear array camera (4);
s5, after the integral acquisition system device is adjusted, the formal linear array camera (4) is prepared for image acquisition, the position, camera parameters, lens parameters, light source parameters and the like of the device are fixed and unchanged in the period, after the image acquisition is finished, image data are stored, the linear array camera (4) software is closed, the high-intensity light source generator (6) is closed, the power supply module is closed, and the high-speed linear array camera synchronous acquisition is completed.
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|---|---|---|---|
| CN2021107428829 | 2021-07-01 | ||
| CN202110742882.9A CN113472988A (en) | 2021-07-01 | 2021-07-01 | Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source |
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| CN114339011A true CN114339011A (en) | 2022-04-12 |
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| CN202210193003.6A Withdrawn CN114339011A (en) | 2021-07-01 | 2022-03-01 | Image acquisition method and device for synchronous trigger control of high-speed linear array camera and high-intensity light source |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115334219A (en) * | 2022-08-08 | 2022-11-11 | 南京航空航天大学 | High-speed photographing system and method based on active and passive illumination |
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2021
- 2021-07-01 CN CN202110742882.9A patent/CN113472988A/en not_active Withdrawn
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2022
- 2022-03-01 CN CN202210193003.6A patent/CN114339011A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115334219A (en) * | 2022-08-08 | 2022-11-11 | 南京航空航天大学 | High-speed photographing system and method based on active and passive illumination |
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