CN205610785U - Device and image scanning system are erased to image - Google Patents
Device and image scanning system are erased to image Download PDFInfo
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- CN205610785U CN205610785U CN201620193359.XU CN201620193359U CN205610785U CN 205610785 U CN205610785 U CN 205610785U CN 201620193359 U CN201620193359 U CN 201620193359U CN 205610785 U CN205610785 U CN 205610785U
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Abstract
This application embodiment provides a device and image scanning system are erased to image, and wherein the device includes: a NM the same light source, the quantity of N for going, M is the quantity of row, and the luminescence centre of i arbitrary two adjacent light sources in capable is the same apart from di, N >= 1, M >= 2. Compared with the prior art, the utility model discloses a light source area array that comprises a plurality of light sources that have the same luminescence properties for all regions of image board can receive even light intensity and shine, have improved the work efficiency that the device was erased to irradiant homogeneity and image, have obtained the complete and unanimous effect of erasing.
Description
Technical field
This utility model belongs to X ray computer photographic imagery field, the device especially Image Plate wiped with
And image-scanning system.
Background technology
When using X-ray production apparatus row computer X-ray photography (Computed Radiology, CR), when X-ray penetrates into
As object, incide on the Image Plate (Imaging Plate, IP) containing Optical-excitation fluorescent powder, a frame latent image can be produced
(Latent Image) is also stored in Image Plate.With the laser pumping Image Plate of certain wavelength, Image Plate can launch intensity
The fluorescence consistent with latent image Energy distribution, these fluorescence are collected, are converted into the signal of telecommunication digitized, thus are converted into by latent image
The two-dimensional digital image that can transmit and store.
After normal image read work completes, Image Plate is inevitably present remaining image, in order to ensure
Image Plate can quickly be reused, and needs to wipe remaining image artificially.
Image erasing generally uses more efficient red-light LED light source, but single source light intensity is limited, and lighting angle
Can not be too big, therefore, it is difficult to ensure that having all regions on the Image Plate of certain area can obtain enough and uniform light intensity shines
Penetrate.The most how to improve light intensity and improve large area light irradiate uniformity with improve image erasing apparatus work efficiency, be
Key issue to be solved.
Utility model content
The purpose of this utility model is to provide a kind of image erasing apparatus and scanning system, to improve the uniformity of illumination
Work efficiency with image erasing apparatus, it is thus achieved that complete and consistent erasing effect.
For achieving the above object, on the one hand this utility model embodiment provides a kind of image erasing apparatus, and described image is wiped
Except device includes: N × M identical light source, described N is the quantity of row, and described M is the quantity of row, and arbitrary neighborhood in the i-th row
Centre of luminescence distance d of two light sourcesiIdentical；Described N >=1, described M >=2.
Preferably, centre of luminescence distance d of two light sources of arbitrary neighborhood in all rowiIdentical.
Preferably, centre of luminescence distance d of two light sources of arbitrary neighborhood in described same a linei≥d0, described d0It is two light sources
Minimum centre of luminescence distance.
Preferably, described N >=2, and the straight line at the often row place of the straight line at each column place of described light source and described light source
For non-perpendicular relation.
Preferably, centre of luminescence distance d of two light sources of arbitrary neighborhood in every stringij≥d0, wherein said dijFor same
The centre of luminescence distance of the i-th row and jth line light source in row, and described j=i+1.
Preferably, di=N × d`0, d`0For the centre of luminescence distance projection in the row direction of two light sources in same string away from
From minima.
Preferably, L0=(1/N+M 2) di,
Described L0Length for optical power detection region；
Described Image Plate is at the width w≤L being perpendicular in its direction of motion0。
On the other hand this utility model additionally provides a kind of image-scanning system, and described image-scanning system, including image
Plate and described Image Plate is scanned obtaining the device of image scanning of image；
Described device of image scanning includes: image erasing apparatus described above, central control module and with described central authorities
Image Plate transmission module, image scanning module and the image processing module that control module is all electrically connected with；
Described Image Plate transmission module includes position detection unit and Image Plate gear unit, described image processing module bag
Include image just locating module, image pinpoint module and image rotation module；
Described position detection unit obtains primary importance testing result also for the position of described Image Plate is carried out detection
The laser position of described image scanning module is carried out detection acquisition second position testing result；
Described Image Plate gear unit enters institute for determining described Image Plate according to described primary importance testing result
Described Image Plate is driven to move to the outlet of described image scanning module after stating the CD feeding port of image scanning module；
Described central control module enters described for determining described Image Plate according to described primary importance testing result
Control described image scanning module during the CD feeding port of image scanning module and open image scanning；
Described image scanning module is used for utilizing laser rotary mode that described Image Plate is entered line scans, it is thus achieved that often go
Digital signal streams also flow to described image processing module by the described central control module described digital signal of transmission；
Described image just locating module for according to described primary importance testing result, described second position testing result and
Described digital signal streams carries out image initial location, generates initial pictures matrix；
Whether described image pinpoint module exists signal also for often row, each column that judge described initial pictures matrix
Generating exact image matrix according to judged result, described exact image matrix is the minimum matrix comprising effective image-region；
Described image rotation module calculates image inclination angle Φ for the apex coordinate according to described exact image matrix,
If Φ ≠ 0, then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
Preferably, described position detection unit includes position sensor R and position sensor A；
Described position sensor R is positioned at the CD feeding port of described image scanning module, is used for whether detecting described Image Plate
Arrive described CD feeding port；
Described position sensor A is for detecting the position of the laser that described image scanning module is launched, described position sensing
Device A be positioned at described image scanning module and be positioned at described Image Plate row region outside；
Described image just locating module, for when determining described Image Plate and arriving pre-starting position, opening at next line
Dynamic digital signal acquiring and record, when determining described laser and arriving described position sensor A, start the numeral letter of current line
Number record, when determining described laser and arriving row end position, terminates the digital signal record of current line, described determining
When Image Plate arrives pre-end position, at next line end number signals collecting and record,
Described pre-starting position is the position of described position sensor R or is positioned at described position sensor R and described laser
The plane of scanning motion between, described pre-end position be positioned at described laser scanning plane and described image scanning module piece mouth it
Between, described row end position is positioned at described image scanning module and lays respectively at described Image Plate with described position sensor A
The both sides in row region and do not blocked by described Image Plate, and described laser first scans position when performing a line scanning and passes
Sensor A scans row end position again.
Preferably, described position detection unit also includes position sensor P, Q, B；
Wherein said position sensor P is positioned at described pre-starting position, and described position sensor Q is positioned at described pre-end
Position, described position sensor B is positioned at described row end position.
Preferably, described position sensor R, P, Q are all made up of least one set light source and receptor, described position sensor
A, B are made up of laser pickoff.
Preferably, described device of image scanning also includes that at least one intervalometer is for timing；The time of described timing is long
Short it is adjusted according to Image Plate translational speed and/or laser scanning speed；
According to the timing results of described intervalometer, described image just locating module, for judging whether described Image Plate arrives
Described pre-starting position, pre-end position also judge whether described laser arrives row end position.
Preferably, described device of image scanning also includes that module wiped by image, for erasing from described image scanning module
The latent image of Image Plate out.
Preferably, the LED light source of described image erasing apparatus uses HONGGUANG, and optical wavelength peak value is 600nm-700nm.
Preferably, described Image Plate is flexible Image Plate, and described Image Plate gear unit includes for making institute by extruding
Stating flexible Image Plate and curve the regulating wheel of circular arc, described laser to described Image Plate is identical with the distance of a line each position.
Preferably, described image-scanning system also includes computer, for receiving the figure of described device of image scanning output
Picture, and according to user's request by described graphical analysis, preserve or show.
Preferably, described image-scanning system is applied in dentistry.
This utility model also provides for a kind of device of image scanning as described in the claims.
This utility model also provides for a kind of image scanning method, is applied in above-mentioned image-scanning system, described image
Scan method includes:
Described position detection unit carries out detection and obtains primary importance testing result and to institute the position of described Image Plate
The laser position stating image scanning module carries out detection acquisition second position testing result；
Described Image Plate gear unit determines described Image Plate according to described primary importance testing result and enters described shadow
As driving described Image Plate to move to the outlet of described image scanning module after the CD feeding port of scan module；
Described central control module determines described Image Plate according to described primary importance testing result and enters described image
Control described image scanning module during the CD feeding port of scan module and open image scanning；
Described image scanning module utilizes laser rotary mode that described Image Plate is entered line scans, it is thus achieved that the numeral often gone
Signal stream also flow to described image processing module by the described central control module described digital signal of transmission；
Described image just locating module is according to described primary importance testing result, described second position testing result and described
Digital signal streams carries out image initial location, generates initial pictures matrix；
Described image pinpoint module judges whether often row, each column of described initial pictures matrix exists signal basis
Judged result generates exact image matrix, and described exact image matrix is the minimum matrix comprising effective image-region；
Described image rotation module calculates image inclination angle Φ according to the apex coordinate of described exact image matrix, if Φ
≠ 0, then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
Preferably, described position detection unit includes position sensor R and position sensor A；
Described position sensor R detects whether described Image Plate arrives described CD feeding port, and described position sensor R is positioned at institute
State at the CD feeding port of image scanning module；
Described position sensor A detects the position of the laser that described image scanning module is launched, described position sensor A position
In described image scanning module and be positioned at outside the row region of described Image Plate；
Described image just locating module, when determining described Image Plate and being positioned at pre-starting position, starts number at next line
Word signals collecting and record, when determining described laser and arriving described position sensor A, start the digital signal note of current line
Record, when determining described laser and arriving row end position, terminates the digital signal record of current line, is determining described image
When plate is positioned at pre-end position, at next line end number signals collecting and record,
Described pre-starting position is the position of described position sensor R or is positioned at described position sensor R and described laser
The plane of scanning motion between, described pre-end position be positioned at described laser scanning plane and described image scanning module piece mouth it
Between, described row end position is positioned at described image scanning module and lays respectively at described Image Plate with described position sensor A
The both sides in row region and do not blocked by described Image Plate, and the most first scanning when performing a line scanning of described laser puts in place
Put sensors A and scan row end position again.
Preferably, described device of image scanning also includes that at least one intervalometer is to be timed；The time of described timing
Length is adjusted according to Image Plate translational speed and/or laser scanning speed；Described image just locating module is according to described
The timing results of intervalometer judges whether described Image Plate arrives described pre-starting position, pre-end position and judge described laser
Whether arrive row end position.
Preferably, described Image Plate is flexible Image Plate, and described Image Plate gear unit includes for making institute by extruding
Stating flexible Image Plate and complete the regulating wheel of circular arc, described laser to described Image Plate is identical with the distance of a line each position.
Preferably, described image-scanning system also includes computer；
Described computer receives the image of described device of image scanning output, and is divided by described image according to user's request
Analyse, preserve or show.
Preferably, described image scanning method is applied in dentistry.
This utility model is by providing a kind of surface of light source battle array being made up of multiple light sources with the identical characteristics of luminescence so that
All regions of Image Plate by uniform light intense irradiation, can improve uniformity and the work of image erasing apparatus of illumination
Efficiency, it is thus achieved that complete and consistent erasing effect.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present application or technical scheme of the prior art, below will be to embodiment or existing
In having technology to describe, the required accompanying drawing used is briefly described, it should be apparent that, the accompanying drawing in describing below is only this
Some embodiments described in application, for those of ordinary skill in the art, on the premise of not paying creative work,
Other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is Image Plate scale diagrams；
Fig. 2 A is the lighting angle schematic diagram of single led light source；
Fig. 2 B is the irradiation light distribution schematic diagram of single led light source；
Fig. 3 is the image erasing surface of light source battle array structural representation of row's LED light source composition；
Fig. 4 A is that row's LED light source irradiates Image Plate front schematic view；
Fig. 4 B is that row's LED light source irradiates Image Plate side schematic view；
Fig. 5 is each LED light source intensity of illumination distribution situation schematic diagram on Image Plate in row's LED light source linear array；
Fig. 6 is the synthetic effect schematic diagram of the light distribution of row's LED light source linear array；
Fig. 7 is that surface of light source battle array (N × M) structural representation wiped by image；
Fig. 8 is the dimension constraint schematic diagram of N × M surface of light source battle array structure；
Fig. 9 is that N × M surface of light source battle array is at the light source position distribution schematic diagram being perpendicular in the Image Plate direction of motion；
Figure 10 is that two row's LED light source face battle arrays are shown at the irradiation equivalent power resultant curve being perpendicular in the Image Plate direction of motion
It is intended to；
Figure 11 A, 11B are two kinds of layout structure schematic diagrams that two row's LED light source face battle arrays exist；
Figure 12 is scanning system structure chart；
Figure 13 is device of image scanning structure chart；
Figure 14 is image transmission module structure chart；
Figure 15 is image scanning module structure chart；
Figure 16 is central control module and other module connection diagrams；
Figure 17 is image scan process chart；
Figure 18 is position sensor R, P, Q installation site schematic diagram；
Figure 19 A, 19B are this utility model laser scanning floor map；
Figure 20 is image just positioning embodiment one flow chart；
Figure 21 is image just positioning embodiment two flow chart；
Figure 22 be at the beginning of image location after obtain image array；
Figure 23 A, 23B, 24 26 it is that image is accurately positioned schematic diagram；
Figure 27 is the image array after image is accurately positioned；
Figure 28 is the image array after image rotation；
Figure 29 is that image is accurately positioned flow chart.
Detailed description of the invention
For the technical scheme making those skilled in the art be more fully understood that in the application, real below in conjunction with the application
Execute the accompanying drawing in example, the technical scheme in the embodiment of the present application is clearly and completely described, it is clear that described enforcement
Example is only some embodiments of the present application rather than whole embodiments.Based on the embodiment in the application, this area is common
The every other embodiment that technical staff is obtained under not making creative work premise, all should belong to the application protection
Scope.
The image erasing apparatus that this utility model relates to, the certain power of main offer and light distribution uniform HONGGUANG light
Source, for wiping the ghost information on CR Image Plate.Described Image Plate is the flexible board with certain size, as it is shown in figure 1,
We assume that Image Plate is h along the length dimension of the direction of motion, the width dimensions being perpendicularly to the direction of movement is w.
Described red-light source is presented in modular assembly.Described Image Plate under the drive of drive mechanism, with
The form of uniform motion slow transits through this image erasing apparatus.In the process, red-light source is persistently lighted so that Image Plate
All regions obtain sufficient and uniform light intense irradiation, so that ghost is completely eliminated.
The image erasing apparatus that this utility model relates to is made up of some red-light LED light sources.The glow peak of each LED light source
Value wavelength is 600～700nm, and representative value is 620nm, it is ensured that ghost efficiency of erasing is higher.Multiple LED light sources must use unified
Specification, unified power controls, and unified switch time controls, it is ensured that each LED light source rises in the ghost of Image Plate is wiped
Same effect.
The light distribution of LED light source has typical angular distribution feature, meanwhile, is irradiated on Image Plate also need to consider ball
Face diffusion characteristic.Without loss of generality, it will be assumed that the lighting angle of single led light source and irradiation light distribution below figure 2A, 2B
Shown in.
Wherein, I0Obtain for light intensity peak, the typically normal direction at LED exiting surface；θ is lighting angle.Visible difference
Under angle, luminous light intensity is the most different, and off-normal orientation angle is the biggest, and light intensity is the least.In theory, for guaranteeing to have in unit are
Enough light intensity, should select the LED light source that lighting angle is less.
In view of Image Plate, there is certain area (w × h), and LED light source has lighting angle distribution character, if only
Image Plate is irradiated, it is difficult to obtain the uniform light intensity of larger area, it is therefore necessary to consider multiple LED light source with a LED light source
Form array, be applied in combination.This array of source being perpendicular in the Image Plate direction of motion formation or equivalence must can form light
Source equidistantly arranges.The array of source of this utility model offer the following two kinds form:
(1) one dimensional linear array light source
Multiple LED light source array that this embodiment relates to are one dimensional linear array, it may be assumed that use multiple LED light source, are being perpendicular to shadow
As being arranged to a linear array in the plate direction of motion, layout (comprises D101～D106 totally 6 as shown in Fig. 3 and Fig. 4 A, 4B in figure
Individual LED light source, number of light sources is only signal).Require that the characteristics of luminescence of all LED light sources is consistent, and the LED of arbitrary neighborhood position
The distance at light source luminescent center is consistent, is set to d1.If light source linear array total length is set to L1, represent in light source linear array two of two ends
The centre of luminescence distance of LED light source.Assume that light source linear array is made up of N number of LED light source, then have a relational expression:
L1=(N-1) d1
One row's LED light source linear array is being perpendicular in the Image Plate direction of motion light distribution effect such as Fig. 5 and Fig. 6 institute of producing
Show.Wherein, show in Fig. 5 is single led light source intensity of illumination distribution situation on Image Plate in this linear array, each
In the normal direction of LED light source, light intensity is maximum, for I0.In figure, d1Be still arbitrary neighborhood position the LED light source centre of luminescence away from
From, L1Still represent the centre-to-centre spacing of two LED light sources at head and the tail two ends in light source linear array.Fig. 6 is that this LED light source linear array is being perpendicular to
The synthetic effect of the light distribution produced in the Image Plate direction of motion, has the periodic law of spatial distribution.Owing to light intensity is folded
Adding so that define relatively uniform irradiation light intensity in the range of certain space, this is advantageously implemented the erasing of uniform image.
Being not difficult to draw, the space length in optical power detection region should be equal to linear array length L1, close on light intensity peak valley it
Between distance should be equal to closing on space between light sources d1.Assume that the light intensity maximum in optical power detection region is Iup,1, light intensity is minimum
Value is Idn,1, should have Iup,1>Idn,1, and Iup,1≥I0, wherein I0It it is still the largest light intensity of single source.
As seen from Figure 6, as long as Image Plate is at the width w≤L being perpendicular in its direction of motion1, can realize on Image Plate
Ghost uniformly wipe.
In addition, it is assumed that the ratio of light intensity minima in optical power detection region and light intensity maximum is R1, then have:
R1=Idn,1/Iup,1
Preferably in the case of optical power detection, R1Should level off to 1, this just requires spacing d of two adjacent LEDs light source1To the greatest extent
Measure little.But actual it is limited to the restrictive conditions such as LED light source size, one dimensional linear array layout, light source heat radiation, d1It is difficult to very
Little.Assume, for specific LED light source, structure design to exist space between light sources minima d0, during actual design, should have d1≥d0。
Accordingly, it would be desirable to be considered as multiple rows of array of source design, with guarantee be perpendicular in the Image Plate direction of motion etc.
Effect distribution of light sources is equidistant, and can effectively break through light source minimum spacing d0Restriction.
(2) multiple rows of array of source
Use multiple rows of array of source designing image erasing apparatus, it is therefore an objective to break through one dimensional linear array to space between light sources d0Limit
System so that light intensity ratio RiMore level off to 1, reach the effect of approaches uniformity distribution.
Without loss of generality, this utility model design N × M surface of light source battle array as shown in Figure 7, N >=2 herein, M >=2, this light
Face, source battle array has the following characteristics that
It is perpendicular in the Image Plate direction of motion arrange that N arranges LED light source linear array at image erasing apparatus, often arranges and all have M LED
Light source forms.As it is shown in fig. 7, first row light source numbering is followed successively by D11, D12, D13 ... D1M；Second row light source numbering is followed successively by
D21、D22、D23、…D2M；3rd row's light source numbering is followed successively by D31, D32, D33 ... D3M；... N row's light source is numbered successively
For DN1, DN2, DN3 ... DNM.
Require that light intensity and the angular distribution characteristic thereof of each LED light source are the most identical；
In array, each LED light source position is staggeredly placed, but defers to certain layout rule.Concrete such as Fig. 7 and Fig. 8 institute
Show.In Fig. 7, first LED light source of second row is placed relative to first LED light source of first row, indentation a certain distance, is located at
Being perpendicular to the distance of indentation in the Image Plate direction of motion is d'0；3rd ranked first a LED light source relative to second row first
LED light source, same indentation distance d'0Place；... by that analogy, N ranked first a LED light source and ranked first relative to N-1
Individual LED light source, indentation distance d'0Place；And second LED light source of first row ranked first a LED light source relative to N, still
Indentation distance d'0Place；Second LED light source of second row is relative to second LED light source of first row, same indentation distance d'0Put
Put；... and so forth, until completing the layout of all LED light sources.The straight line at each column place of the most described light source and described light
The straight line at the often row place in source is non-perpendicular relation.LED light source face battle array designed by this utility model, is being perpendicular to Image Plate
Equivalent one-dimensional equidistant linear array distribution as shown in Figure 8 can be formed in the direction of motion.
LED light source face battle array is being perpendicular in the Image Plate direction of motion exist the one-dimensional equidistant linear array row of above-mentioned equivalence just
Cloth, just ensure that and is formed in the direction than more uniform light distribution feature.
Requirement based on LED light source position each in above-mentioned surface of light source battle array, it is easy to draw and be perpendicular to the Image Plate direction of motion
On, in M LED light source of each winding displacement battle array, the centre-to-centre spacing of two LED light sources of arbitrary neighborhood is identical.Assume first row adjacent two
The centre-to-centre spacing of individual LED light source is d1, the centre-to-centre spacing of second row two adjacent LEDs light source is d2, the 3rd row's two adjacent LEDs light source
Centre-to-centre spacing be d3... the centre-to-centre spacing of i-th row's two adjacent LEDs light source is di, the centre-to-centre spacing of N row's two adjacent LEDs light source is
dN；But assume that belonging to adjacent LED linear array is respectively d apart from two closest LED light source centre-to-centre spacing simultaneously12、d23、
d34、…dI, j (j=i+1) ...dN-1,N, then have relationship below to set up:
d1=d2=d3=...=dN=N × d'0≥d0
d12≥d0, d23≥d0, d34≥d0..., dN-1,N≥d0
It is not required that d12=d23=d34=...=dN-1,N.In above formula, d0It it is still LED light source spacing minimum limit value.
Based on relational expression above, it can be deduced that:
d'0=d1/N
Determined the required distance of each row's LED light source indentation by above formula, establish indentation distance d'0With often arrange adjacent LED
Light source center is away from d1Between contact.
Assume that each linear array length is respectively L1、L2、L3、…LN, the most easily draw: L1=L2=L3=...=LN=(M-1)
d1, the length of the most each winding displacement battle array is equal.
LED light source array described in the utility model, divides in the light intensity being perpendicular in the Image Plate direction of motion to be formed
Butut is as shown in Figure 10.Assume that the light intensity maximum in optical power detection region is Iup,1, light intensity minima is Idn,1, light intensity
Minima is R with the ratio of light intensity maximumN, RN=Idn,N/Iup,N, should have Iup,N>Idn,N, Iup,N≥I0, and R1≤RN≤ 1, its
Middle I0For the largest light intensity of single source, R1Light intensity ratio for aforementioned row's LED light source linear array.Preferably optical power detection
In the case of, RNShould level off to 1, this just requires spacing d of two adjacent LEDs light source1The least.
In Figure 10, it will again be assumed that a length of L in optical power detection region0, then L can be derived0LED light source with this N × M
The relational expression of array layout is:
L0=(1/N+M 2) d1
Similarly, as long as ensureing that Image Plate is at the width w≤L being perpendicular in its direction of motion0, can realize on Image Plate
Ghost uniformly wipe.
It should be understood that
The LED light source array layout designs of above-mentioned N × M, the particular design for one dimensional linear array is equally applicable, for above-mentioned
Process prescription, if N=1.
The above-mentioned requirement for each row's distributing order, is not unalterable, and the order of each row can adjust, it is only necessary to
Each row's LED light source linear array remains to the equivalent light source linear array lined up shown in Fig. 6, and meets in two LED light sources of arbitrary neighborhood
The heart is away from not less than restrictive condition d0?.Arranging LED light source array for the N in Fig. 8, the most any one row, such as N arranges LED
Light source linear array can adjust its position, can be placed on first row, it is also possible to is placed on second row, the 3rd row ... N 1 row；Its
The light source linear array of he row is similar to.Therefore, in theory for N arrange array of source, have N × (N-1) × (N-2) × ... × 2 × a kind of row
Row mode.Such as when row N=3, LED light source face battle array can have 6 kinds of layout structures；And when row N=2, still have two kinds
Layout structure, as shown in figure 11.In figure, either first row indentation or second row indentation, the distance of indentation is d1/ 2, its
Middle d1For the centre-to-centre spacing of adjacent LED light source in any one row's light source linear array.
This utility model, by optimizing the topology layout of LED light source array, arranges LED light source at bigger two-dimensional space,
Make multiple LED light sources same or analogous for the characteristics of luminescence, acquisition light intensity can be perpendicular in the Image Plate direction of motion
More uniform light area, and light intensity is increased, it is possible to effectively break through one dimensional linear array limit in each LED light source spacing
System, is also beneficial to improve the speed of image erasing and the heat radiation of image erasing apparatus.
This utility model relates to a kind of image-scanning system for computer X-ray.As shown in figure 12, this system includes
Record to have and expose the Image Plate (Imaging Plate, also referred to as IP plate) of sub-image, by using laser the most quickly to scan this shadow
As plate, the fluorescence excited is collected, opto-electronic conversion, A/D conversion record sub-image on Image Plate is converted into numeral
The device of image scanning of a width two dimensional image is synthesized and for receiving the work of the image of device of image scanning output after information
Platform.
This workbench can be man-machine interactive platform, by the support of software, can be scanned object registration, start shadow
As scanning, browse, analyze, preserve the functions such as image.Concrete, this workbench can be with scanning means by wired (such as serial ports
Line, USB line, RJ45 netting twine etc.) or the mode of wireless (such as bluetooth, wifi, 3G/4G etc.) be attached.Certainly this workbench
Device of image scanning is controlled by the instruction that can also accept user.
As shown in figure 13, above-mentioned device of image scanning is mainly by Image Plate transmission module, image scanning module, image
Reason module, network driver block, power module and central control module composition.
It should be noted that the organic component of the not device of image scanning of the Image Plate in Figure 13, be intended only as inserting
The object to be scanned entered is for illustrating.
Above-mentioned Image Plate transmission module includes position detection unit and Image Plate gear unit, and image processing module includes
Image just locating module, image pinpoint module and image rotation module.
Above-mentioned position detection unit obtains primary importance testing result and to shadow for the position of Image Plate carries out detection
Second position testing result is obtained as the laser position of scan module carries out detection.
Image Plate gear unit enters image scanning module for determining Image Plate according to primary importance testing result
Image Plate is driven to move to the outlet of image scanning module after CD feeding port.
Central control module enters entering of image scanning module for determining Image Plate according to primary importance testing result
Control image scanning module during sheet mouth and open image scanning.
Image scanning module is used for utilizing laser rotary mode that Image Plate is entered line scans, it is thus achieved that the digital signal often gone
Flow and send digital signal by central control module and flow to image processing module.
Image just locating module is for flowing to according to primary importance testing result, second position testing result and digital signal
Row image initial positions, and generates initial pictures matrix.
Whether image pinpoint module exists signal and according to judgement for often row, each column that judge initial pictures matrix
Result generates exact image matrix, and exact image matrix is the minimum matrix comprising effective image-region.
Image rotation module calculates image inclination angle Φ for the apex coordinate according to exact image matrix, if Φ ≠ 0,
Then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
As shown in figure 14, for image transmission module structural representation, wherein image gear unit includes conveyer belt, actively
Wheel, driven pulley, regulating wheel, supporting construction, motor #1, and motor drive and control circuit #1.Wherein, wherein, drivewheel, from
Driving wheel, regulating wheel are used for driving and fastening conveyer belt；Image Plate regulating wheel is used for fastening Image Plate and Image Plate cambered surface is moulding (soft
Property Image Plate).Motor #1 works together with conveyer belt, drives Image Plate persistently to move forward.Described motor drives and controls
Circuit #1, is used for driving motor #1 to run, and provides velocity accuracy control.
Position detection unit includes position sensor and position detecting circuit.Described position sensor by organizing photoelectricity more
Pipe or light sensitive diode are constituted, can not only detect whether Image Plate inserts (primary importance testing result) or removal
Scan module, moreover it is possible to often row image scan is carried out initial zero location (second position testing result).Described position detection electricity
Road, for activation point working sensor, and carries out useful signal detection.
Image scanning module major function is, starts laser instrument and extremely exports the laser beam of firm power, and the light velocity is through poly-
Burnt to certain spot size, impinge perpendicularly on the region that on Image Plate, certain is the least, inspire and sub-image in this region
The fluorescence signal of the proportional relation of gray value.The fluorescence signal excited is collected through light path, and through opto-electronic conversion, A/D conversion
Etc. step, be converted to digital signal streams by equal proportion.Described laser beam is necessarily through a specular-reflection unit, this device
Meeting high speed rotating under driven by motor, it is achieved that the scanning in all regions on Image Plate.As shown in figure 15, image scan mould
Block at least includes following assembly:
Laser instrument and drive circuit for laser.Described laser instrument provides light source for image scan.Laser instrument output is red
Light, optical wavelength, between 600nm～700nm, may select and uses helium neon laser or the semiconductor laser of specific wavelength.Institute
The drive circuit for laser stated, provides constant-current driving for laser instrument, and guarantees the temperature stability of laser instrument.
Laser adjusts light path.It is made up of one group of lens and supporting construction thereof, the output light source of laser instrument is adjusted, really
Protecting and project the spot size on Image Plate continually and steadily in required scope, such as hot spot should be less than 50 microns.
Motor #2, and motor drive and control circuit #2.Motor #2, is used for driving laser to adjust light path, especially carries
Dynamic light reflection mirror therein rotates so that laser can continue, the most circumferentially be scanned.Described motor drives and control
Circuit #2 processed, is used for driving motor #2 to run, and provides velocity accuracy control.
Phosphor collection light path.Laser facula projects on Image Plate relevant position, moment can inspire a wavelength range
Fluorescence, on the intensity of fluorescence and Image Plate there is proportionate relationship in the sub-image information of record.Fluorescence is according to certain angular distribution
Rule outwards scatters, phosphor collection light path be collected.One group of lens of phosphor collection optical routing or reflecting mirror composition, purpose
It is that the fluorescence scattered out is focused, and in the light collection window of the electrooptical device projecting correspondence.
Electrooptical device.For collecting through over-focusing fluorescence signal, and amplify, and be converted into some strength in proportion
Current signal.Typically, laser scanning device uses photomultiplier tube (PMT) to carry out the work of optical signal amplification and opto-electronic conversion
Make.
Signals collecting control circuit.On the one hand provide for electrooptical device and drive and control, on the other hand realize telecommunications
Number A/D sampling, current signal is converted to digital signal.Sample rate is set by central controller.
Above-mentioned image processing module, mainly under the scheduling of central control module, completing will from the signal stream gathered
Image Plate latent image information extracts, and is combined into a width two-dimensional rectangular image like clockwork.
Described image processing module can integrate with central control module, it is also possible to by single hardware structure
Become, such as FPGA, DSP etc..
Described image processing module, for positioning at the beginning of image, be accurately positioned and image rotation:
Position at the beginning of image, sensor based on fixed position, such as photoelectric tube or photodiode, or combine sensing
Device and intervalometer, it is achieved Image Plate column locations is primarily determined that.Image is accurately positioned.Based on the image information gathered, logical
Cross signal strength analysis, accurately determine the border of Image Plate.Image rotation.The image caused owing to Image Plate is out of alignment is inclined
Tiltedly, such as turned clockwise by image rotation and be corrected.
Above-mentioned network driver block is for realizing central control module and workbench or other control of scanning means
Interconnection between platform, it is simple to workbench sends to scanning means and controls parameter and control instruction, and scanning means is to work
Platform transmission view data, work state information and abnormal information.
In this utility model, network driver block includes but not limited to:
(1) USB drives module.For realizing the usb communication of workbench and scanning means.
(2) Ethernet drives module.For realizing gigabit or the 100 m ethernet communication of workbench and scanning means.
(3) wifi drives module.For realizing the short-distance wireless communication between moving bolster and scanning means.
(4) bluetooth module.For realizing moving bolster and scanning means short-distance wireless communication.
(5) 3G/4G communication module.For realizing moving bolster or remote platform and scanning means mobile communication.
Above-mentioned power module is powered for each functional module of whole scanning means, and voltage is less than 24V.Controlled by central authorities
Molding block is powered controlling.
As shown in figure 16, it is connected figure for central control module with other modules.Central control module for connect and
Control peripheral each and perform functional module, control the orderly function of whole scanning means.Central control unit can be ARM+
FPGA platform, can be FPGA+DSP platform, it is also possible to be single FPGA module.
Device of image scanning of the present utility model also includes image erasing apparatus mentioned above.
Through the Image Plate of laser traverse scanning, it is possible to containing remaining latent image information.In order to ensure Image Plate energy
Enough reuse, and Multiple-Scan image will not interfere with each other, need to wipe out remaining latent image.
To passing through the Image Plate region of above-mentioned laser scanning, use the LED light source face battle array of foregoing description, to Image Plate
The latent image of upper remnants is wiped.Described LED light source uses HONGGUANG, and optical wavelength peak value is 600nm-700nm.By wiping
Removing so that resetted completely by the electronics of excitation of X-rays, Image Plate can reuse.
Figure 17 is the whole handling process of image scan:
Scanning means process to as if Image Plate after x-ray bombardment, this Image Plate remains with x-ray bombardment portion
The latent image information of position, such as the tooth of patient, thoracic cavity, extremity etc..Described Image Plate must be inserted into scanning means through manually
CD feeding port.
Generally, holding state is i.e. entered after scanning means start.In the standby state, position detecting circuit can be held
Reforwarding row, after detecting that Image Plate is already inserted into CD feeding port, can be started Image Plate scanning process by central control module.
The first step, starts motor #2 drive circuit, drives laser to adjust light path high speed rotating, Negotiation speed by motor #2
Precision controlling, it is ensured that motor is uniform motion under setting speed；
Second step, starts motor #1 drive circuit, makes motor #1 uniform motion at lower speeds, by conveyer belt transmission
Image Plate enters scanning area evenly.By the squeezing action of regulating wheel, make Image Plate curve circular arc, designed by structure
Guarantee that the center of circle of circular arc overlaps with the axis of rotation of motor #2；
3rd step, starts drive circuit for laser, lights laser instrument and make its power stability.Adjust light path through laser to gather
Burnt small size hot spot, can be normally incident on Image Plate, and under motor #2 drives, hot spot meeting one circle is another encloses the land
On Image Plate inswept, formed continuous print scan line.Under the synergism of motor #1 and motor #2, it is possible to realize scan line traversal
Whole Image Plate；
4th step, is collected by phosphor collection light path, collects the fluorescence of scattering and is focused.The fluorescence focused on is sent to
The light inlet of electrooptical device；
5th step, carries out clutter by electrooptical device to fluorescence and filters, be amplified useful fluorescence signal, and
It is converted into current signal output；
6th step, by signals collecting control circuit, is amplified the current signal exported through electrooptical device
Change with A/D, form digitized signal stream.
7th step, by image processing module, and binding site sensor information, in above-mentioned digitized signal stream,
Carry out location, image at the beginning of image to be accurately positioned and image rotation step, it is thus achieved that efficient 2-d image information；
8th step, by central control module, encapsulates two-dimensional image information, and will figure by specific network driver block
As being sent to workbench, carry out showing and achieving.
Hereinafter the first location of the image in above-mentioned flow process is described in detail:
Position detection unit includes position sensor R and position sensor A；
Described position sensor R is positioned at the CD feeding port of described image scanning module, is used for whether detecting described Image Plate
Arrive described CD feeding port；
Described position sensor A is for detecting the position of the laser that described image scanning module is launched, described position sensing
Device A be positioned at described image scanning module and be positioned at described Image Plate row region outside；
Described image just locating module, for when determining described Image Plate and being positioned at pre-starting position, opens at next line
Dynamic digital signal acquiring and record, when determining described laser and arriving described position sensor A, start the numeral letter of current line
Number record, when determining described laser and arriving row end position, terminates the digital signal record of current line, described determining
When Image Plate is positioned at pre-end position, at next line end number signals collecting and record,
Described pre-starting position, between described position sensor R and the plane of scanning motion of described laser, described to be terminated
Position is between described laser scanning plane and the piece mouth of described image scanning module, and described row end position is positioned at described
The both sides in the row region of described Image Plate in image scanning module and are laid respectively at described position sensor A.
Below for two specific embodiments of image initial location, the most most position sensors and minimum position sensing
The situation of device:
Embodiment one
Position at the beginning of lower edges
Position at the beginning of image, mainly the location to Image Plate.In order to position Image Plate, image transmission module can wrap
Include R, P, Q position sensor shown in lower Figure 18.
Position sensor R, is positioned at CD feeding port, is used for detecting whether Image Plate inserts CD feeding port；Position sensor P, is positioned at
The lower section of sensor R, the top of laser scanning plane ACDB, for determining the lower edge of Image Plate, instruction Image Plate will enter
Enter scanning area, as the original position of image acquisitions；Position sensor Q, is positioned at the lower section of sensor R, and is also swashing
The lower section of photoscanning plane, upper edge during for determining Image Plate removal scanning area, instruction Image Plate will be fully removed
Scanning area, as the end position of image acquisitions.
Above-mentioned described lower section is a kind of it is assumed that i.e. suppose that conveyer belt is vertically placed in scanning means, and Image Plate is from upper
And lower insertion CD feeding port.In any case, when Image Plate advances, sensor P is in the front of sensor R, and sensor Q is at sensor
The front of P.
R, P, Q sensor should use light source and the optical receiver of pairing, and light source and receptor are discretely located, such as photoelectric tube
Deng.Each position sensor can be made up of one or more groups light source and receptor.
Described light source, the light sent should be able to direct projection on optical receiver.Described receptor should be able to be according to whether feel
Light should be arrived and export the level state of correspondence.Such as, after the light that light source is not luminous or light source sends is blocked by Image Plate,
Receptor output low level；And when the light direct beam that light source sends to receptor, receptor output high level.Vice versa.
Position at the beginning of edge, left and right
The schematic diagram of the plane of scanning motion ACDB of Figure 19 A, 19B reflection, laser scanning line only high speed rotating in this plane.Figure
In, r is sweep radius, and θ is the scanning angle that Image Plate is corresponding.Owing to the crooked radian of Image Plate is limited, therefore r can not be too
Little, the most just determine θ not too large.Laser scanning being described one week, the most of the time is in sky and sweeps state.In order to determine that often row is swept
The position of Image Plate during retouching, position sensor to be arranged in the plane of scanning motion, to determine that often row scans valid data
Original position and end position.
As shown below, position sensor A and B it is set, and arranges laser scanning line and swept to B by A.The installation site of A, B
Through optimizing design, following condition must be met:
(1) must be positioned in the plane of scanning motion, it is possible to be irradiated to by laser scanning line；
(2) sensors A range image plate left side edge, sensor B range image plate right edge are along all there being rational distance,
Distance can not can not be blocked by Image Plate too far.This is applicable to the Image Plate of all dimensions.Such as Figure 19 B, Ying You
θ 1 > 0, θ 2 > 0.
Above-mentioned described left side and right side, be a kind of position it is assumed that can also reversely state.In any case, work as laser
When scan line persistently scans, always before scanning Image Plate, first scan sensors A；After scanning Image Plate,
Sensor B can be scanned.
A and B is only made up of laser pickoff, can scan laser facula with actual induction, and export instruction level, permissible
For high level, it is also possible to for low level.
Laser scanning line is high speed rotating under the drive of motor #2, often rotates a circle, and all can flow serially through position sensing
Device A and B, laser intensity can be sensed by A and B.When through A, starting Imagery Data Recording, initiateing as picturedeep evidence
End.When through B, stopping Imagery Data Recording, as the end of picturedeep evidence.Sensors A, B level signal collection with
Laser scanning signal (picturedeep evidence) gathers and answers stringent synchronization.
The idiographic flow of this embodiment is as shown in Figure 20.
Embodiment 2
Position at the beginning of lower edges
If the sensor P in above-mentioned Figure 18 or Q one do not exist, or P and Q does not exists, then can pass through
Specific distance relation i.e. combines the timing of intervalometer and calculates original position and the end position obtaining image collection.Such as Figure 18 institute
Showing, the distance of design attitude sensor R to P is h1, and the distance to laser scanning plane is h1+h2, and the distance to Q is h1+h2+
H3, and assume that the size of Image Plate is h × w (long × wide), the speed that Image Plate transmits is v, laser scanning line angular velocity of rotation
For ω, then after sensor P senses that Image Plate inserts,
After the t1 time of interval, i.e. Image Plate lower edge should reach the position of position sensor P in theory, now should open
Dynamic image data gathers.Actual due to the existence of kinematic error with control time delay, it is difficult to the time of advent accurately estimate.Described
T1 computing formula is:
T1=h1/v
After the t2 time of interval, Image Plate lower edge should arrive the plane of scanning motion in theory.Described t2 computing formula is:
T2=(h1+h2)/v
After the t3 time of interval, Image Plate upper edge should arrive the plane of scanning motion in theory.Described t3 computing formula is:
T3=(h1+h2+h)/v
After the t4 time of interval, Image Plate upper edge answers the position at sensor Q place, in-position in theory, now should stop
Only image acquisitions.Described t4 computing formula is:
T4=(h1+h2+h3+h)/v
Position at the beginning of edge, left and right
Sensor B can not be tangible material object, it is also possible to obtains equivalently by distance estimations, as at laser scanning line
It is irradiated to startup picturedeep during sensors A and, according to record, as laser scanning line scanning angle θ+θ 1+ θ 2 again, i.e. arrives virtual biography
Behind the position of sensor B, the record of picturedeep evidence can be stopped, completing Primary Location and the collection of a line view data equally.By A
Time interval t5 to B is represented by:
T5=(θ+θ 1+ θ 2)/ω
Flow chart is as indicated at 21
In above-described embodiment 2, its essence is that by means of intervalometer estimates Image Plate or whether laser reaches the position of setting
Put.
By the image picturedeep evidence that just position fixing process is obtained, recombinating through inverted order, the image array of formation is as follows
Shown in Figure 23.
This image may include bigger white space around effective imaging region EFGH, defines image array
JKLM.During real image is analyzed, these white spaces are useless, it is also possible to form interference.Meanwhile, clear area is comprised
The picture size in territory is relatively big, Image Processing and transmission speed.Therefore, it is necessary to all removed by white space, this relates to
To image exact localization operation.
Image is accurately positioned each step included shown in Figure 29.
According to shown in Figure 23 A order (L1, L2, L3, L4, L5 ...), image array JKLM is gone sweep from top to bottom
Retouch, and line by line signal intensity is analyzed, it is judged that whether current line is with the presence of signal, it may be assumed that whether there is continuous print, range value
There is (Figure 23 B) in the picture signal that deviation noise figure is bigger, the S point such as L4 is judged to signal to T point, and the U point of L5 is judged to letter to W point
Number, remaining is noise.
Owing to judging with the presence of signal in line number L4, can be using L4 as effective image beginning-of-line, i.e. upper edge.
According to shown in Figure 24 order (L1, L2, L3, L4, L5 ...), image array JKLM is gone sweep from down to up
Retouch, and line by line signal intensity is analyzed, it is judged that whether current line is with the presence of picture signal.Rule of judgment is that picture signal is strong
Degree, much larger than background noise, can find picture signal border by the way of setting threshold value.The first row of picture signal will be found
As the end point of effective image row, i.e. lower edge.
According to shown in Figure 25 order (L1, L2, L3, L4, L5 ...), image array JKLM carried out row swept by left-to-right
Retouch, and by column signal intensity is analyzed, it is judged that when whether prostatitis is with the presence of signal.Using the first row of discovery signal as figure
As the starting point of row, i.e. left side edge.
According to shown in Figure 26 order (L1, L2, L3, L4, L5 ...), to a left side by the right side image array JKLM carried out row sweep
Retouch, and by column signal intensity is analyzed, it is judged that when whether prostatitis is with the presence of signal.Using the first row of discovery signal as figure
As the end point of row, i.e. right edge edge.
Being accurately positioned by image, the image array obtained is J ' K ' L ' M ', is to comprise effective image-region EFGH
Minor matrix.As shown in figure 27.
Further, if before search graph image signal, base line or column signal are carried out smothing filtering, the most favourable
In the precision improving image edge detection.
Further, if having employed frequency more much higher than the sample rate required by Nyquist law when sampling and entering
Row image pixel is sampled, then it is more accurate to obtain image edge detection.
It is not easily achieved when inserting CD feeding port in view of Image Plate and the most vertically places, the effective image therefore collected
Region EFGH is difficult to overlap with above-mentioned pinpoint image array J ' K ' L ' M ', needs to carry out image rotation.
By the coordinate of E, F, G, H point in image array J ' K ' L ' M ', calculate image inclination angle Φ.Use general figure
As Rotation Algorithm, by image clockwise anglec of rotation Φ, thus obtain final image array E ' F ' G ' H '.As shown in figure 28.
Through above-mentioned steps, it is possible to obtain the latent image of Image Plate record.
It should be noted that said system specifically can be applicable in dentistry.
Corresponding said system, this utility model additionally provides a kind of device of image scanning and scan method, and related content can
See components of system as directed to describe.
Although depicting the application by embodiment, it will be appreciated by the skilled addressee that the application have many deformation and
Change is without deviating from spirit herein, it is desirable to appended claim includes that these deformation and change are without deviating from the application's
Spirit.
Claims (13)
1. an image erasing apparatus, it is characterised in that described image erasing apparatus includes: N × M identical light source, described N
For the quantity of row, described M is the quantity of row, and centre of luminescence distance d of two light sources of arbitrary neighborhood in the i-th rowiIdentical；Described
N >=1, described M >=2.
2. image erasing apparatus as claimed in claim 1, it is characterised in that the luminescence of two light sources of arbitrary neighborhood in all row
Centre distance diIdentical.
3. image erasing apparatus as claimed in claim 1, it is characterised in that two light sources of arbitrary neighborhood in described same a line
Centre of luminescence distance di≥d0, described d0It it is the minimum centre of luminescence distance of two light sources.
4. image erasing apparatus as claimed in claim 1, it is characterised in that described N >=2, and each column place of described light source
The straight line at often row place of straight line and described light source be non-perpendicular relation.
5. image erasing apparatus as claimed in claim 4, it is characterised in that the luminescence of two light sources of arbitrary neighborhood in every string
Centre distance dij≥d0, wherein said dijFor the centre of luminescence distance of the i-th row and jth line light source in same string, and described j=i+
1。
6. image erasing apparatus as claimed in claim 4, it is characterised in that di=N × d`0, d`0For two light in same string
The minima of the centre of luminescence distance in source projector distance in the row direction.
7. image erasing apparatus as claimed in claim 1, it is characterised in that
L0=(1/N+M 2) di,
Described L0Length for optical power detection region；
Described Image Plate is at the width w≤L being perpendicular in its direction of motion0。
8. an image-scanning system, it is characterised in that described image-scanning system, enters including Image Plate with to described Image Plate
Row scanning is to obtain the device of image scanning of image；
Described device of image scanning includes: the image erasing apparatus as according to any one of claim 1-6, central control module
And Image Plate transmission module, image scanning module and the image procossing mould being all electrically connected with described central control module
Block；
Described Image Plate transmission module includes position detection unit and Image Plate gear unit, and described image processing module includes figure
As first locating module, image pinpoint module and image rotation module；
Described position detection unit obtains primary importance testing result and to institute for the position of described Image Plate carries out detection
The laser position stating image scanning module carries out detection acquisition second position testing result；
Described Image Plate gear unit enters described shadow for determining described Image Plate according to described primary importance testing result
As driving described Image Plate to move to the outlet of described image scanning module after the CD feeding port of scan module；
Described central control module enters described image for determining described Image Plate according to described primary importance testing result
Control described image scanning module during the CD feeding port of scan module and open image scanning；
Described image scanning module is used for utilizing laser rotary mode that described Image Plate is entered line scans, it is thus achieved that the numeral often gone
Signal stream also flow to described image processing module by the described central control module described digital signal of transmission；
Described image just locating module is for according to described primary importance testing result, described second position testing result and described
Digital signal streams carries out image initial location, generates initial pictures matrix；
Whether described image pinpoint module exists signal basis for often row, each column that judge described initial pictures matrix
Judged result generates exact image matrix, and described exact image matrix is the minimum matrix comprising effective image-region；
Described image rotation module calculates image inclination angle Φ for the apex coordinate according to described exact image matrix, if Φ
≠ 0, then by image rotation algorithm by image clockwise or rotated counterclockwise by angle Φ to generate final image matrix.
9. image-scanning system as claimed in claim 8, it is characterised in that described position detection unit includes position sensor
R and position sensor A；
Described position sensor R is positioned at the CD feeding port of described image scanning module, is used for detecting whether described Image Plate arrives
Described CD feeding port；
Described position sensor A is for detecting the position of the laser that described image scanning module is launched, described position sensor A position
In described image scanning module and be positioned at outside the row region of described Image Plate；
Described image just locating module, for when determining described Image Plate and arriving pre-starting position, starting number at next line
Word signals collecting and record, when determining described laser and arriving described position sensor A, start the digital signal note of current line
Record, when determining described laser and arriving row end position, terminates the digital signal record of current line, is determining described image
When plate arrives pre-end position, at next line end number signals collecting and record,
Described pre-starting position is the position of described position sensor R or is positioned at sweeping of described position sensor R and described laser
Retouch between plane, described pre-end position between described laser scanning plane and the piece mouth of described image scanning module,
Described row end position is positioned at described image scanning module and lays respectively at the row of described Image Plate with described position sensor A
The both sides in region and not blocked by described Image Plate, and described laser first scans position sensor when performing a line scanning
A scans row end position again.
10. image-scanning system as claimed in claim 9, it is characterised in that described position detection unit also includes that position passes
Sensor P, Q, B；
Wherein said position sensor P is positioned at described pre-starting position, and described position sensor Q is positioned at described pre-end position
Place, described position sensor B is positioned at described row end position.
11. image-scanning systems as claimed in claim 10, it is characterised in that described position sensor R, P, Q all have at least
One group of light source and receptor composition, described position sensor A, B are made up of laser pickoff.
12. image-scanning systems as claimed in claim 9, it is characterised in that described device of image scanning also includes at least one
Individual intervalometer is for timing；The time length of described timing is carried out according to Image Plate translational speed and/or laser scanning speed
Regulation；
Described image just locating module, described for judging whether described Image Plate arrives according to the timing results of described intervalometer
Pre-starting position, pre-end position also judge whether described laser arrives row end position.
13. image-scanning systems as claimed in claim 8, it is characterised in that described Image Plate is flexible Image Plate, described shadow
As plate gear unit includes that described laser is to described for making described flexible Image Plate curve the regulating wheel of circular arc by extruding
Image Plate is identical with the distance of a line each position.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620193359.XU CN205610785U (en) | 2016-03-14 | 2016-03-14 | Device and image scanning system are erased to image |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763817A (en) * | 2016-03-14 | 2016-07-13 | 天逸瑞狮（苏州）口腔医疗科技股份有限公司 | Image erasing device and method, and image scanning system |
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2016
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105763817A (en) * | 2016-03-14 | 2016-07-13 | 天逸瑞狮（苏州）口腔医疗科技股份有限公司 | Image erasing device and method, and image scanning system |
| CN105763817B (en) * | 2016-03-14 | 2020-01-14 | 天逸瑞狮（苏州）口腔医疗科技股份有限公司 | Image scanning system |
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