CN107071221B - Platform movable type wide-width industrial scanning equipment and scanning method - Google Patents
Platform movable type wide-width industrial scanning equipment and scanning method Download PDFInfo
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- CN107071221B CN107071221B CN201710220541.9A CN201710220541A CN107071221B CN 107071221 B CN107071221 B CN 107071221B CN 201710220541 A CN201710220541 A CN 201710220541A CN 107071221 B CN107071221 B CN 107071221B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
- H04N1/1008—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces with sub-scanning by translatory movement of the picture-bearing surface
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/024—Details of scanning heads ; Means for illuminating the original
- H04N1/028—Details of scanning heads ; Means for illuminating the original for picture information pick-up
- H04N1/02815—Means for illuminating the original, not specific to a particular type of pick-up head
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
- H04N1/04—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa
- H04N1/10—Scanning arrangements, i.e. arrangements for the displacement of active reading or reproducing elements relative to the original or reproducing medium, or vice versa using flat picture-bearing surfaces
- H04N1/1061—Details relating to flat picture-bearing surfaces, e.g. transparent platen
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Abstract
The invention discloses a platform movable type wide industrial scanning device and a scanning method, wherein the device comprises a frame, an upright post, a platform, a cantilever, a linear array camera and a control device, wherein universal casters are arranged at the bottom of the frame, the upright post is fixed on the frame, and the platform is connected with the frame through a first sliding rail and is driven by a first motor to do linear motion along the horizontal direction of the frame; the cantilever is connected with the upright post through a first sliding rod and is driven by a second motor to do linear motion along the vertical direction of the upright post; the linear array camera is connected with the cantilever through a second sliding rail, the linear array camera is driven by a third motor to do linear motion along the horizontal direction of the cantilever, the central shaft of the photosensitive element of the linear array camera is driven by a rotating motor to do rotary motion, and the linear array camera, the first motor, the second motor, the third motor and the rotating motor are respectively connected with the control device. The invention can flexibly obtain the surface patterns with high precision and high color reproducibility on the surface of the scanned wide object under different visual angles.
Description
Technical Field
The invention relates to a scanning device and a scanning method, in particular to a platform moving type wide industrial scanning device and a scanning method, and belongs to the technical field of wide scanning.
Background
Scanners for obtaining high-precision patterns can be generally classified into contact type and non-contact type according to the manner of placement of the surface to be scanned. In contact scanners, the scanned surface is directly covered on a support surface, such as in general household and office scanners, and the manuscript is directly covered on a transparent glass surface; touch scanners are generally suitable for scanning document drawings and soft objects (e.g., fabrics), but generally can scan a smaller area. In a non-contact scanner, the scanned surface is not in direct contact with any support surface, for example, in-line detection scanning on a production line is typically non-contact scanning, and in principle also non-contact scanning, for example, a scanning gun for scanning bar codes.
The scanning process can be divided into a scanning element moving type and a platform moving type according to whether the scanned object moves or the scanning element moves. In general, scanners for home use and office use are configured such that a scanning element is moved, and an image is acquired by moving the scanning element after an object to be scanned is covered on a glass support plate. The scanning of on-line inspection on a production line is typically stage-mobile, with the scanning elements mounted in a fixed position.
At home, the existing scanner products have the following problems:
1) Only vertically downward. The scan angle is similar to the photographing angle. When the scanning surface has concave-convex objects, the visual and image effects are different from each other at different scanning angles. The existing domestic products only scan at a single angle vertically downwards.
2) There is no scanning preview function or scanning previews take too long. The domestic similar products have no scanning preview function, and have no function of flexibly selecting a scanning area after previewing; while scanning previews of imported products is too long, previewing a web of length x width 1500 x 1000mm takes approximately 2 minutes for wide reasons.
3) Soft articles, such as wide drawings and tissue, often fail to lay flat when placed on a platform, directly affecting the scan quality.
4) There is no autofocus.
5) The arrangement of stray light entering the lens is reduced effectively.
6) There is no temperature control of the illumination light. The light on the similar equipment is two kinds, one is an alternating current cold light lamp and the other is a direct current LED lamp. The ac cold light lamp has a disadvantage in that the electric frequency is much smaller than the scanning frequency, and the image quality is unstable due to a minute change in brightness during the power period. In order to obtain stable illumination, a direct current LED lamp is a better choice; however, the direct current LED lamp has the problem of large heat generation, and if heat dissipation is not controlled, the color temperature of light can be influenced, so that the color of an image is influenced.
Disclosure of Invention
The invention aims to solve the defects of the prior art, and provides a platform mobile type wide industrial scanning device which is reasonable in structural design and can flexibly acquire high-precision and high-color-reduction surface patterns of the surface of a scanned wide object under different visual angles.
Another object of the present invention is to provide a scanning method based on the above device.
The aim of the invention can be achieved by adopting the following technical scheme:
the platform moving type wide industrial scanning device comprises a frame, an upright post, a platform, a cantilever, a linear array camera and a control device, wherein universal casters are arranged at the bottom of the frame, the upright post is fixed on the frame, and the platform is connected with the frame through a first sliding rail and is driven by a first motor to do linear motion along the horizontal direction of the frame; the cantilever is connected with the upright post through a first sliding rod and is driven by a second motor to do linear motion along the vertical direction of the upright post; the linear array camera is connected with the cantilever through a second sliding rail, the linear array camera is driven by a third motor to do linear motion along the horizontal direction of the cantilever, the central shaft of the photosensitive element of the linear array camera is driven by a rotating motor to do rotary motion, the rotating motor is connected with the linear array camera through a speed reducer, and the linear array camera, the first motor, the second motor, the third motor and the rotating motor are respectively connected with the control device.
Further, the lens of the linear array camera is fixed on a sliding block, the sliding block is connected with the second sliding rod and driven by a fourth motor, the lens of the linear array camera is driven to stretch and retract, and the fourth motor is connected with the control device.
Further, the plane array camera is arranged on the upper portion of the upright post and connected with the control device, the position and the angle between the plane array camera and the platform at the initial position are fixed, the lens of the plane array camera faces the platform, and the field of view range of the lens of the plane array camera covers the whole platform.
Further, the lamp bracket is connected with the upright post through a third sliding rail and is driven by a fifth motor to linearly move along the vertical direction of the upright post, the lamp light supporting arm is connected with the lamp bracket through a fourth sliding rail and is driven by a sixth motor to linearly move along the horizontal direction of the lamp bracket, and the fifth motor and the sixth motor are respectively connected with the control device.
Further, two LED lamp panels and a light barrier are arranged on the lamplight supporting arm, the two LED lamp panels are respectively positioned at the left side and the right side of the lamplight supporting arm and are connected with the control device, the light barrier is positioned between the two LED lamp panels, and a gap is formed in the middle of the light barrier along the direction of a lens of the linear array camera.
Further, temperature probes are arranged on the two LED lamp panels, radiating fins are arranged on the back surfaces of the two LED lamp panels, a speed-adjustable radiating fan is arranged on the radiating fins, the temperature probes and the radiating fan are respectively connected with the control device, and the radiating fins are made of copper materials.
Further, the platform is formed by left side platform and right platform concatenation, the inside of left side platform and right platform is the cavity, and the top is put the thing board, and the bottom is the apron, put thing board of left side platform and right platform put and all open a plurality of suction holes on the thing board, a plurality of suction holes on left side platform and the right platform are the equidistance and distribute, respectively install two turbine fans that bleed on the apron of left side platform and the apron of right platform, two turbine fans that bleed are connected with controlling means respectively.
The other object of the invention can be achieved by adopting the following technical scheme:
a scanning method based on the above device, the method comprising the steps of:
s1, after equipment is started, two LED lamp panels on a lamplight supporting arm are started, a cooling fan is started, and scanning equipment automatically returns to an original position;
s2, before scanning, a user inputs scanning related parameters on a control software interface of a computer;
s3, according to parameters input by a user, the scanning equipment automatically adjusts the following positions: the height of the lamp holder, the position of the light supporting arm on the lamp holder, the height of the cantilever and the rotation angle of the linear array camera;
s4, before formal scanning, the control software judges whether the temperature is in an optimal range according to the temperature of the LED lamp panel detected by the temperature probe, and if the temperature is in the optimal range, the formal scanning is started; if the temperature is not in the optimal range, prompting a user to adjust the room temperature, waiting for the temperature of the LED lamp panel to return to the optimal range and starting formal scanning;
s5, the platform moves at a certain speed, the front part of a scanning area to be framed enters a scanning line range, the linear array camera starts scanning, the rear part of the scanning area to be framed leaves the scanning line range, and the scanning of the first area is finished;
s6, if the width of the selected scanning area is larger than the visual field of the linear array camera, the platform automatically returns to move to scan the second area, and the third area and even the fourth area are scanned by analogy;
s7, after the control software acquires all the scanned images, if more than one image is acquired, the control software automatically runs an image stitching program in the background and then outputs the complete image of the whole framed scanning area;
s8, after the scanning is finished, the platform automatically returns to the original position;
s9, exiting the control software, and automatically returning the scanning equipment to the original point position.
Further, the method further comprises:
before step S4, if the user does not need to preview, directly framing the area to be scanned on the simulated platform frame, and automatically adjusting the linear array camera to a required position along the cantilever after determining; if the user needs to preview, selecting a preview function, automatically shooting an image of a platform by using an area array camera positioned on the upper part of the upright post, automatically correcting distortion after the control software acquires the image shot by the area array camera, displaying the image on a control software interface, and automatically adjusting the linear array camera to a required position along the cantilever after the user frames an area needing to be scanned on the corrected image.
Further, the automatic return of the scanning device to the origin position means: the platform is positioned at the left extreme limit, the lamp holder is positioned at the lower extreme limit, the lamplight supporting arm is positioned in the middle of the lamp holder, the height of the cantilever is positioned at the position with the resolution of 600dpi, and the linear array camera is vertically downwards directed at the center line of the platform;
the scanning related parameters comprise the height of the scanned object, required image resolution, the opening form of the LED lamp panel and the scanning angle.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention is provided with the cantilever and the linear array camera, the cantilever is connected with the upright post through the sliding rod, the linear array camera is connected with the cantilever through the sliding rail, the cantilever can move upwards or downwards along the upright post under the drive of the motor so as to drive the linear array camera to move upwards or downwards, meanwhile, the linear array camera can move forwards or backwards along the cantilever under the drive of the motor and can rotate along the central axis of the photosensitive element of the linear array camera under the drive of the rotating motor, the shooting position and the shooting angle of the linear array camera can be changed, when the concave-convex object is arranged on the scanning surface, different shooting positions and shooting angles can be used for scanning different visual and image effects, namely, the requirements of users on the visual and image can be met by adjusting the shooting positions and the shooting angles, and the flexibility and the effect are obviously superior to those of the traditional equipment which can only vertically scan the surface of the object.
2. The lens of the linear array camera can be fixed on the sliding block, the sliding block drives the lens of the linear array camera to stretch and retract under the drive of the motor, the distance between the lens and the linear array camera can be accurately adjusted by stretching and retracting the lens, and the lens is matched with a computer, so that the accurate automatic focusing function can be realized.
3. The invention can also set up the area array camera on the pillar stand, the position and angle between the platform of the initial position and the area array camera are fixed, the lens of the area array camera faces the platform, its visual field scope covers the whole platform, the area array camera is controlled by the computer after being connected with computer in the control device, when needing preview, choose preview, the area array camera shoots a picture and outputs to the computer to the platform, then carry on the distortion correction to the picture automatically, then display the preview image after correcting on the display screen of the computer, for users to choose the concrete scanning area, if adopt the line array camera, because the imaging principle of the line array camera, users preview the scanning effect and must carry on the pre-scan first, the time spent is more, but the imaging principle of the area array camera is different from that of the line array camera, adopt the area array camera to shoot and preview can raise the scanning preview speed effectively, although the pixel value is not high enough, but already make users fast frame the area needing to scan, the operation convenience is obviously improved.
4. The invention can also be provided with the lamp holder and the lamplight supporting arm, the lamp holder is connected with the upright post through the sliding rail, the lamplight supporting arm is connected with the lamp holder through the sliding rail, the lamp holder can move upwards or downwards along the upright post under the drive of the motor so as to drive the lamplight supporting arm to move upwards or downwards, meanwhile, the lamplight supporting arm can also move leftwards or rightwards along the lamp holder under the drive of the motor, and the lamplight supporting arm and the linear camera are combined to obtain special effects of various lighting angles.
5. The light supporting arm is provided with the two LED lamp panels and the light blocking plate, the two LED lamp panels are respectively positioned at the left side and the right side of the light supporting arm, the two LED lamp panels can be selectively turned on simultaneously, the LED lamp panel on the left side is independently turned on, or the LED lamp panel on the right side is independently turned on, the light blocking plate is positioned between the two LED lamp panels, a gap is formed in the middle of the light blocking plate along the direction of the lens of the linear array camera, the gap ensures that light rays of a scanned area can completely enter the lens of the linear array camera, and meanwhile, the light blocking plate can block stray light interference of most non-scanning areas, and the quality and stability of scanned images are improved.
6. The temperature probe is arranged on the LED lamp panel, the radiating fin is arranged on the back surface of the LED lamp panel, the speed-adjustable radiating fan is arranged on the radiating fin, the temperature (color temperature) of the LED lamp panel can be monitored in real time through the temperature probe, if the temperature is not in the optimal range, the temperature of the LED lamp panel can be controlled in the optimal range by adjusting the speed of the radiating fan, and the accuracy of color reduction can be improved.
7. The platform is internally provided with the cavity, the upper object placing plate is provided with the plurality of air suction holes, the lower cover plate is provided with the air suction turbine fan, after the air suction turbine fan is started, a certain negative pressure is generated at the air suction holes on the object placing plate, when a flexible object such as paper, cloth and the like is scanned, the vacuum adsorption function can increase the flatness of the object, the scanning effect is improved, and the plurality of air suction holes are distributed at equal intervals to ensure that the suction force is uniformly distributed.
Drawings
Fig. 1 is a perspective view of a front view of a platform-moving type wide industrial scanning apparatus according to embodiment 1 of the present invention.
Fig. 2 is an enlarged schematic view at a in fig. 1.
Fig. 3 is a perspective view showing a side view angle of a platform-moving type wide industrial scanning device according to embodiment 1 of the present invention.
Fig. 4 is an enlarged schematic view at B in fig. 3.
Fig. 5 is a perspective view of a rear view angle of a platform-moving type wide industrial scanning device according to embodiment 1 of the present invention.
Fig. 6 is a front view of a construction diagram of a platform moving type wide industrial scanning apparatus according to embodiment 1 of the present invention.
Fig. 7 is a side view structural diagram of a platform moving type wide industrial scanning device of embodiment 1 of the present invention.
Fig. 8 is an enlarged schematic view at C in fig. 7.
Fig. 9 is a top view of the structure of the platform-moving type wide industrial scanning apparatus of embodiment 1 of the present invention.
Fig. 10 is a front view of a construction diagram of a platform-moving type wide industrial scanning apparatus according to embodiment 2 of the present invention.
The device comprises a 1-frame, a 2-stand column, a 3-platform, a 4-cantilever, a 5-linear array camera, a 6-lamp holder, a 7-lamplight supporting arm, 8-universal casters, 9-first slide rails, 10-first motors, 11-air suction holes, 12-air extraction turbine fans, 13-first slide rails, 14-second motors, 15-second slide rails, 16-third motors, 17-rotating motors, 18-speed reducers, 19-slide blocks, 20-second slide rails, 21-fourth motors, 22-third slide rails, 23-fifth motors, 24-fourth slide rails, 25-sixth motors, 26-LED lamp panels, 27-light blocking plates, 28-gaps, 29-cooling fans and 30-area array cameras.
Detailed Description
The present invention will be described in further detail with reference to examples and drawings, but embodiments of the present invention are not limited thereto.
Example 1:
as shown in fig. 1 to 9, the present embodiment provides a platform-moving type wide industrial scanning apparatus including a frame 1, a column 2, a platform 3, a cantilever 4, a line camera 5, a lamp stand 6, a lamp support arm 7, and a control device (not shown in the drawings).
The universal casters 8 are arranged at the bottom of the frame 1, so that a user can conveniently move the whole equipment, the upright posts 2 are fixed on the frame 1, and the control device comprises a controller (such as a Mitsubishi QX series PLC and a control module thereof, an FX series PLC and a control module thereof) and a plurality of motor drivers, and the control device is connected with a computer through data lines, so that the scanning equipment can work normally after a power supply is started.
The platform 3 is connected with the frame 1 through a first sliding rail 9, and is driven by a first motor 10 to do linear motion (left or right motion) along the horizontal direction of the frame 1, and the first motor 10 is connected with a control device; the platform 3 is formed by left side platform and right platform concatenation, the inside of left side platform and right platform is the cavity, and the top is put the thing board, and the bottom is the apron, put thing board of putting of left side platform and right platform and all open a plurality of equidistance distributed's suction holes 11 on putting the thing board, respectively install two turbine fans that bleed 12 on the apron of left side platform and right platform, two turbine fans that bleed 12 are connected with controlling means respectively, and when turbine fans that bleed 12 start, the suction hole 11 department of putting on the thing board produces certain negative pressure, with thin soft manuscript or fabric flat attachment put on the thing board, a plurality of suction holes 11 equidistance distributes and can ensure suction evenly distributed.
The cantilever 4 is connected with the upright post 2 through a first sliding rod 13 and is driven by a second motor 14 to do linear motion (upward or downward motion) along the upright post 2 in the vertical direction, and the second motor 14 is connected with a control device; the linear camera 5 is connected with the cantilever 4 through a second sliding rail 15, and can linearly move (move upwards or downwards) along the vertical direction along with the cantilever 4, the linear camera 5 can be driven by a third motor 16 to linearly move (move forwards or backwards) along the horizontal direction of the cantilever 4, the shooting position (move up and down or move forwards and backwards) of the linear camera 5 can be changed, the linear camera 5 can be driven by a rotating motor 17 to rotate along the central axis of a photosensitive element of the linear camera 5, the shooting angle of the linear camera 5 can be changed, when an uneven object exists on the scanning surface, different visual and image effects can be scanned at different shooting positions and shooting angles, the rotating motor 17 is connected with the linear camera 5 through a speed reducer 18, and the linear camera 5, the third motor 16 and the rotating motor 17 are respectively connected with a control device; in addition, the lens of the linear array camera 5 is fixed on a slide block 19, the slide block 19 is connected with a second slide bar 20 and driven by a fourth motor 21, the lens of the linear array camera 5 is driven to stretch, the distance between the lens and the linear array camera 5 can be accurately adjusted by stretching the lens, an automatic focusing function is realized by matching with an automatic focusing algorithm of computer control software, and the fourth motor 21 is connected with a control device.
The lamp holder 6 is connected with the upright post 2 through a third slide rail 22 and is driven by a fifth motor 23 to linearly move (upwards or downwards) along the upright post 2 in the vertical direction, and the fifth motor 23 is connected with a control device; the lamplight supporting arm 7 is connected with the lamp holder 6 through a fourth sliding rail 24 and is driven by a sixth motor 25 to do linear motion (left or right motion) along the horizontal direction of the lamp holder 6, and the sixth motor 25 is connected with the control device; the lamp bracket 6 moves upwards or downwards, so that the lamp supporting arm 7 can be driven to move upwards or downwards, and meanwhile, the lamp supporting arm 7 can also move leftwards or rightwards, that is to say, the lamp supporting arm 7 and the line camera 5 are combined, and special effects of various different lighting angles can be shot.
The light support arm 7 is provided with two LED lamp panels 26 and a light blocking plate 27, the two LED lamp panels 26 are respectively positioned at the left side and the right side of the light support arm 7 and are connected with the control device, the two LED lamp panels 26 can be selectively turned on at the same time, the LED lamp panel 26 on the left side is independently turned on, or the LED lamp panel 26 on the right side is independently turned on, the light blocking plate 27 is positioned between the two LED lamp panels 26, a gap 28 is formed in the middle of the light blocking plate 27 along the lens direction of the linear array camera 5, the gap 28 ensures that light in a scanned area can completely enter the lens of the linear array camera 5, meanwhile, the light blocking plate 27 can block stray light interference in most non-scanning areas, and after the shooting angle of the linear array camera 5 is adjusted, the light support arm 7 can leftwards or rightwards, so that the linear array camera 5 can collect images through the gap 28 is ensured.
The temperature probes are arranged on the two LED lamp panels 26, radiating fins are arranged on the back sides of the two LED lamp panels 26, a speed-adjustable radiating fan 29 is arranged on the radiating fins, the quantity of the radiating fans 29 can be set according to actual needs, the radiating fins can be made of copper materials, the temperature probes and the radiating fans 29 are respectively connected with a control device, the temperature of the LED lamp panels 26 can be monitored in real time through the temperature probes, and if the temperature is not in an optimal range, the temperature of the LED lamp panels 26 can be controlled in the optimal range by adjusting the speed of the radiating fans 29.
The scanning device of this embodiment operates as follows:
s1, after the equipment is started, two LED lamp panels 26 on a lamplight supporting arm 7 are started, a cooling fan 29 is started, and the scanning equipment automatically returns to the original point position: the platform 3 is located the extreme limit on the left, and lighting fixture 6 is located the extreme limit of below, and light support arm 7 is located in the middle of lighting fixture 6, and the height of cantilever 4 is located the position of resolution 600dpi, and linear array camera 5 points vertically downwards to the central line of platform 3.
S2, before scanning, a user needs to input the following parameters in a control software interface of a computer: the height of the scanned object, the required image resolution, the on-pattern of the LED light panels 26 (two lights on, LED light panel 26 on the left side alone, LED light panel 26 on the right side alone), the scan angle.
S3, according to parameters input by a user, the scanning equipment automatically adjusts the following positions: the height of the lamp holder 6, the position of the lamplight supporting arm 7 on the lamp holder 6, the height of the cantilever 4 and the rotation angle of the linear array camera 5.
S4, before formal scanning, the control software judges whether the temperature is in an optimal range according to the temperature of the LED lamp panel 26 detected by the temperature probe, and if the temperature is in the optimal range, scanning is started; if the temperature is not within the optimal range, the user is prompted to adjust the room temperature, at which time the user can adjust the speed of the cooling fan 29, wait for the temperature of the LED lamp panel 26 to return to the optimal range and start the formal scan.
S5, the platform 3 moves at a certain speed, the front part of the scanning area to be framed enters a scanning line range, the linear array camera 5 starts scanning, the rear part of the scanning area to be framed leaves the scanning line range, and the scanning of the first block area is finished.
And S6, if the width of the selected scanning area is larger than the visual field of the linear array camera 5, the platform 3 automatically returns to move to scan the second area, and the like to scan the third area and even the fourth area.
And S7, after the control software acquires all the scanned images, if more than one image is acquired, the control software automatically runs an image stitching program in the background and then outputs the complete image of the whole framed scanning area.
And S8, after the scanning is finished, the platform 3 automatically returns to the original position.
S9, exiting the control software, and automatically returning the scanning equipment to the original point position: the platform 3 is located the extreme limit on the left, and lighting fixture 6 is located the extreme limit of below, and light support arm 7 is located the centre of lighting fixture 6, and the height of cantilever 4 is located the position of resolution 600dpi, and linear array camera 5 points vertically downwards to the central line of platform 3.
Example 2:
as shown in fig. 10, the main features of this embodiment are: the scanning device further comprises an area-array camera 30, wherein the area-array camera 30 is arranged at the upper part of the upright post 2 and is connected with the control device, a lens of the area-array camera 30 faces the platform 3, a lens visual field range of the area-array camera 30 covers the whole platform 3, and a range shown by a dotted line in the figure is the visual field range of the lens; the area camera 30 is a color area camera with a flash lamp at a megapixel level, the size and shape of an object on a platform can be accurately distinguished by taking the requirement of a preview image into consideration, the megapixel level can meet the requirement, the position and angle between the area camera 30 and the platform 3 at an initial position (namely the origin position mentioned in the embodiment 1) are fixed, the area camera 30 is controlled by control software of a computer, when preview is needed, a preview button in the control software is selected, the area camera 30 shoots a picture on the platform 3 and outputs the picture to the control software, the control software then automatically corrects distortion of the picture, and then displays the corrected preview image on a control software interface for a user to select a specific scanning area.
The scanning apparatus of this embodiment is different from embodiment 1 in the operation process: before step S4, if the user does not need to preview, the area to be scanned may be directly framed on the simulated platform frame, and after the determination, the line camera 5 is automatically adjusted to the required position along the cantilever 4; if the user needs to preview, selecting a preview function, automatically shooting an image of the platform 3 by the area camera 30 positioned on the upper portion of the upright post 2, automatically correcting distortion after the control software acquires the image shot by the area camera 30, displaying the image on a control software interface, framing an area needing to be scanned on the corrected image by the user, and automatically adjusting the linear camera 5 to a required position along the cantilever 4 after determining.
In summary, the invention belongs to a non-contact platform mobility scanning device, which is a special device for certain specific industrial application scenes, and has the function of flexibly obtaining the surface patterns with high precision and high color reduction degree of the surface of a scanned wide object under different view angles, such as natural textures of scanned stone, wood and the like, and is applied to pattern development of the ceramic tile/wood grain board/wallpaper industry, which is not achieved by a contact type and general breadth scanner; for example, scanning wide documents or objects that are not suitable for direct contact (contact may damage the scanned object), scanning lossless documents suitable for Wen Bo/archives/arts institutions; for example, for the printing plate making industry, the high-precision scanning requirements of different materials of different clients can be met.
The above-mentioned embodiments are only preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make equivalent substitutions or modifications according to the technical solution and the inventive concept of the present invention within the scope of the present invention disclosed in the present invention patent, and all those skilled in the art belong to the protection scope of the present invention.
Claims (5)
1. A platform mobile wide industrial scanning device, characterized in that: the device comprises a frame, an upright post, a platform, a cantilever, a linear array camera, an area array camera, a lamp holder, a lamplight supporting arm and a control device, wherein universal casters are arranged at the bottom of the frame, the upright post is fixed on the frame, and the platform is connected with the frame through a first sliding rail and is driven by a first motor to do linear motion along the horizontal direction of the frame; the cantilever is connected with the upright post through a first sliding rod and is driven by a second motor to do linear motion along the vertical direction of the upright post; the linear array camera is connected with the cantilever through a second sliding rail, the linear array camera is driven by a third motor to do linear motion along the horizontal direction of the cantilever, the central shaft of a photosensitive element of the linear array camera is driven by a rotating motor to do rotary motion, the rotating motor is connected with the linear array camera through a speed reducer, the linear array camera, the first motor, the second motor, the third motor and the rotating motor are respectively connected with a control device, the linear array camera is arranged on the upper part of a stand column and is connected with the control device, the position and the angle between the linear array camera and a platform at the initial position are fixed, the lens of the linear array camera faces the platform, the lens visual field range of the linear array camera covers the whole platform, the linear array camera is controlled by the computer after the control device is connected with the computer, when preview is needed, the linear array camera shoots a picture on the platform and outputs the picture to the computer, then the corrected picture is automatically corrected, and the corrected preview image is displayed on a display screen of the computer for a user to select a specific scanning area;
the lamp bracket is connected with the upright post through a third sliding rail and is driven by a fifth motor to move linearly along the upright post in the vertical direction, and the fifth motor is connected with the control device; the lamplight supporting arm is connected with the lamp holder through a fourth sliding rail and is driven by a sixth motor to do linear motion along the horizontal direction of the lamp holder, and the sixth motor is connected with the control device; the lamp bracket moves upwards or downwards to drive the light supporting arm to move upwards or downwards, and meanwhile, the light supporting arm can move leftwards or rightwards;
the light supporting arm is provided with two LED lamp panels and a light blocking plate, the two LED lamp panels are respectively positioned at the left side and the right side of the light supporting arm and are connected with the control device, the two LED lamp panels can be selected to be turned on simultaneously, the LED lamp panel on the left side is turned on singly or the LED lamp panel on the right side is turned on singly, the light blocking plate is positioned between the two LED lamp panels, a gap is formed in the middle of the light blocking plate along the direction of a lens of the linear array camera, the gap ensures that light in a scanned area can completely enter the lens of the linear array camera, meanwhile, the light blocking plate can block stray light interference in most non-scanning areas, and after the shooting angle of the linear array camera is adjusted, the light supporting arm can leftwards or rightwards, so that the linear array camera can collect images through the gap is ensured;
the temperature probe is arranged on each of the two LED lamp panels, radiating fins are arranged on the back sides of the two LED lamp panels, radiating fans with adjustable speed are arranged on the radiating fins, the radiating fins are made of copper materials according to actual needs, the temperature probe and the radiating fans are respectively connected with the control device, the temperature of the LED lamp panels is monitored in real time through the temperature probe, and if the temperature is not in an optimal range, the temperature of the LED lamp panels is controlled in the optimal range through adjusting the speed of the radiating fans.
2. A platform-moving wide industrial scanning device according to claim 1, wherein: the lens of the linear array camera is fixed on a sliding block, the sliding block is connected with the second sliding rod and driven by a fourth motor, the lens of the linear array camera is driven to stretch and retract, and the fourth motor is connected with the control device.
3. A platform-moving wide industrial scanning device according to claim 1, wherein: the platform is formed by left side platform and right platform concatenation, the inside of left side platform and right platform is the cavity, and the top is put the thing board, and the bottom is the apron, put thing board of left side platform and right platform put and all open a plurality of suction holes on the thing board, a plurality of suction holes on left side platform and the right platform are the equidistance and distribute, respectively install two turbine fans that bleed on the apron of left side platform and the apron of right platform, two turbine fans that bleed are connected with controlling means respectively.
4. A scanning method based on the scanning device of any one of claims 1-3, characterized in that: the method comprises the following steps:
s1, after scanning equipment is started, two LED lamp panels on a lamplight supporting arm are started, a cooling fan is started, and the scanning equipment automatically returns to an original point position;
s2, before scanning, a user inputs scanning related parameters on a control software interface of a computer;
s3, according to parameters input by a user, the scanning equipment automatically adjusts the following positions: the height of the lamp holder, the position of the light supporting arm on the lamp holder, the height of the cantilever and the rotation angle of the linear array camera;
s4, before formal scanning, the control software judges whether the temperature is in an optimal range according to the temperature of the LED lamp panel detected by the temperature probe, and if the temperature is in the optimal range, the formal scanning is started; if the temperature is not in the optimal range, prompting a user to adjust the room temperature, waiting for the temperature of the LED lamp panel to return to the optimal range and starting formal scanning;
s5, the platform moves at a certain speed, the front part of a scanning area to be framed enters a scanning line range, the linear array camera starts scanning, the rear part of the scanning area to be framed leaves the scanning line range, and the scanning of the first area is finished;
s6, if the width of the selected scanning area is larger than the visual field of the linear array camera, the platform automatically returns to move to scan the second area, and the third area and even the fourth area are scanned by analogy;
s7, after the control software acquires all the scanned images, if more than one scanned image is obtained, the control software automatically runs an image stitching program in the background, and then outputs the complete image of the whole framed scanning area;
s8, after the scanning is finished, the platform automatically returns to the original position;
s9, exiting the control software, and automatically returning the scanning equipment to the original point position;
before step S4, if the user does not need to preview, directly framing the area to be scanned on the simulated platform frame, and automatically adjusting the linear array camera to a required position along the cantilever after determining; if the user needs to preview, selecting a preview function, automatically shooting an image of a platform by using an area array camera positioned on the upper part of the upright post, automatically correcting distortion after the control software acquires the image shot by the area array camera, displaying the image on a control software interface, and automatically adjusting the linear array camera to a required position along the cantilever after the user frames an area needing to be scanned on the corrected image.
5. The scanning method as claimed in claim 4, wherein: the automatic return of the scanning device to the origin position means that: the platform is positioned at the left extreme limit, the lamp holder is positioned at the lower extreme limit, the lamplight supporting arm is positioned in the middle of the lamp holder, the height of the cantilever is positioned at the position with the resolution of 600dpi and the linear array camera is vertically and downwards directed at the center line of the platform;
the scanning related parameters comprise the height of the scanned object, the required image resolution, the opening form of the LED lamp panel and the scanning angle.
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| CN107580187B (en) * | 2017-09-06 | 2020-07-28 | 上海微炽信息科技有限公司 | Full-optical-field 3d material scanning device and image processing method thereof |
| CN108259697A (en) * | 2018-02-06 | 2018-07-06 | 中国科学院西安光学精密机械研究所 | High-definition picture scanning means |
| WO2020152865A1 (en) * | 2019-01-25 | 2020-07-30 | タカノ株式会社 | Image inspection device |
| CN112822342B (en) * | 2021-01-09 | 2023-04-07 | 杭州佳士彩文化创意有限公司 | Large-breadth non-contact scanner |
| CN114113081A (en) * | 2021-11-09 | 2022-03-01 | 厦门聚视智创科技有限公司 | Array scanning mechanism for mobile phone backboard appearance detection equipment and working method thereof |
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