CN108664825A - Scanning means and its image scanning method - Google Patents
Scanning means and its image scanning method Download PDFInfo
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- CN108664825A CN108664825A CN201710212806.0A CN201710212806A CN108664825A CN 108664825 A CN108664825 A CN 108664825A CN 201710212806 A CN201710212806 A CN 201710212806A CN 108664825 A CN108664825 A CN 108664825A
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10544—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum
- G06K7/10821—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices
- G06K7/1092—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation by scanning of the records by radiation in the optical part of the electromagnetic spectrum further details of bar or optical code scanning devices sensing by means of TV-scanning
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Abstract
The invention discloses a kind of scanning means and its image scanning method, which includes the following steps：Step A1, background value when in writing scan channel without card, with this as preset value；Step A2 judges whether the background value in scan channel is consistent with preset value, is consistent with preset value and thens follow the steps A5, be not inconsistent and then follow the steps A3 before carrying out card scan；Step A3, card move a Y distances；Step A4, judges whether the background value in scan channel is consistent with preset value, is consistent with preset value and thens follow the steps A5, is not inconsistent and thens follow the steps A8；Step A8, checks whether the card displacement distance of card displacement distance or accumulation exceeds preset displacement distance, and step A3 is then re-executed without departing from preset displacement distance, no to then follow the steps A9；Step A9, display card block；Step A5 stops detecting and carries out image calibration；Step A6 starts scanning until scanning is completed.
Description
Technical field
Relatively low, scanning that the present invention relates to a kind of scanning means and its image scanning methods more particularly to a kind of manufacturing cost
The preferable scanning means of quality and its image scanning method.
Background technology
Please refer to Fig.1 to Fig.3, it is existing the first can be to the scanning means 100' that card 200' is scanned, including one
Pedestal 10', one are covered on upper cover 20' on pedestal 10', one first idler wheel 11', one second idler wheel 12', once image sensing member
Image Sensor 21' and a motor (not shown) on part 13, one.One is offered in the middle part of the lower surfaces upper cover 20' in laterally
One is offered in the middle part of the upper surface the upper groove 22' of extension, lower cover 10' in the lower groove 14' being laterally extended, the upper image sense
Element 21' and lower Image Sensor 13' is surveyed respectively oppositely to be installed in upper groove 22' and lower groove 14'.The upper cover
It is first in upper Image Sensor 21' and lower image sensing between upper cover 20' and pedestal 10' after 20' is covered on pedestal 10'
The front of part 13' forms between a first passage 30', upper Image Sensor 21' and lower Image Sensor 13' to be formed and sweep
It retouches between channel 40', upper cover 20' and pedestal 10' in the rear rectangular of upper Image Sensor 21' and lower Image Sensor 13'
The second channel 50' being connected to outside Cheng Yiyu.First idler wheel 11' is installed on pedestal 10' and stretches to first passage 30', the
Second wheel 12' be installed on pedestal 10' and stretch to second channel 50', the first idler wheel 11' and the second idler wheel 12' idler wheels with
Motor connects, and can be rotated and reverse by motor driving.First passage 30', scan channel 40' and second channel 50' are interconnected,
One first inductor 60' is set in first passage 30', a center line for being located at the second idler wheel 12' is set in second channel 50'
A scanning read line 41', the first inductor 60' is equipped in front the second inductor 70' of 121', scan channel 40' to examine
Whether survey in first passage 30' has card 200', the second inductor 70' to be scanned to detect rising for card 200' to be scanned
Beginning position.
Existing scanning means 100' workflows are as follows：Card 200' is inserted into first passage 30', the first inductor
60' detects after having card 200' to be scanned in first passage 30' that the first idler wheel 11' and the second idler wheel 12' are rotated forward and driven
Card 200' feed-ins backward, card 200' by scan channel 40' until card 200' end edge reach second channel 50',
The end edge of card 200' be located between the center line 121' and the second inductor 70' of the second idler wheel 12' and with scanning read line
41' keeps certain distance, the first idler wheel 11' and the second idler wheel 12' to stop rotating forward, and card 200' is in stop position；When default
Between after, the first idler wheel 11' and the second idler wheel 12' are inverted and are driven card 200' to being fed forward, when card 200' touches second
After inductor 70', scanning means 100' is scanned, card 200' continue to be fed forward until scanning complete, after the completion of scanning,
Card 200' is fed out from first passage 30'.
But since to be easy to happen feed-in in feed-in backward crooked by card 200', i.e. card before causing card 200' to scan
200' is when stop position, the part masking scanning read line 41' of card 200', in addition, card 200' may also can be because of second
Idler wheel 12' skids and card 200' is caused to cover scanning read line 41' when stop position, to be sent out during scanning
The part that raw card 200' has is not scanned, and scanning is incomplete.In addition, two sensings need to be arranged in existing scanning means 100'
Device, manufacturing cost are higher.
Please refer to Fig. 3 and Fig. 4, the scanning means 300' that existing second couple of card 200' is scanned, relative to
The first existing scanning means 100', scan mode be card 200' from first passage 30' feed-ins, 40' is swept in scanned channel
It is fed out from second channel 50' after retouching, it, only need to be in first passage it is not necessary that second sensor 70' is arranged in second channel 20'
One first sensor 60' is set in 30', and when card 200' is inserted into first passage 30', first sensor 60' has sensed card
200', which enters, just proceeds by scanning.When card 200' is inserted into, the front end of card 200' is easy to surpass this scanning means 300'
Go out image read line 41', to which when scanning, part of the front ends card 200' beyond image read line 41' is not swept
It retouches, card 200' scannings are incomplete.
Therefore, it is necessary to provide, a kind of manufacturing cost is relatively low and the preferable scanning means of scanning quality and its scan method.
Invention content
The purpose of the present invention is being provided in view of the defects existing in the prior art with deficiency, a kind of manufacturing cost is relatively low and scanning
The preferable scanning means of quality and its scan method.
To achieve the goals above, the present invention provides a kind of scanning means, can be scanned to card, including a pedestal,
One upper cover, once Image Sensor, Image Sensor, at least a motor, two groups of idler wheels and a card sensing element on one；
A lower groove is offered in the middle part of base upper surface；Upper cover is articulated on pedestal, and the middle part of the upper cover lower surface corresponds to lower groove
Place offers a upper groove；Lower Image Sensor is installed in lower groove；Upper Image Sensor is installed in upper groove, institute
It states upper cover to be articulated on pedestal, after being above covered on pedestal, in upper Image Sensor and lower image sense between upper cover and pedestal
The front for surveying element forms a first passage, and a scan channel is formed between upper Image Sensor and lower Image Sensor,
Between upper cover and pedestal in the rear of upper Image Sensor and lower Image Sensor formed one be connected to outside second lead to
Road, first passage, scan channel and second channel are interconnected, and a scanning read line is equipped in scan channel；Motor is installed in
On pedestal；The one of which idler wheel of two groups of idler wheels is installed in pedestal and stretches to first passage, and another group of idler wheel is installed in pedestal
Second channel is gone up and stretches to, two groups of idler wheels are connect with motor, can be rotated and reverse by motor driving；Card sensing element fills
In first passage.
To achieve the goals above, the present invention provides a kind of image scanning method suitable on scanning means, can be to card
Piece is scanned, which includes a pedestal, a upper cover, once Image Sensor, Image Sensor on one, at least
One motor, two groups of idler wheels and a card sensing element；A lower groove is offered in the middle part of base upper surface；Upper cover is articulated in pedestal
On, the middle part of the upper cover lower surface, which corresponds to, offers a upper groove at lower groove；Lower Image Sensor is installed in lower groove；
Upper Image Sensor is installed in upper groove, and the upper cover is articulated on pedestal, after being above covered on pedestal, upper cover and pedestal
Between in the front of upper Image Sensor and lower Image Sensor form a first passage, upper Image Sensor and lower shadow
As forming a scan channel between sensing element, in upper Image Sensor and lower Image Sensor between upper cover and pedestal
Rear forms a second channel being connected to outside, and first passage, scan channel and second channel are interconnected, in scan channel
Equipped with a scanning read line；Motor is installed on pedestal；The one of which idler wheel of two groups of idler wheels is installed in pedestal and stretches to
One channel, another group of idler wheel are installed on pedestal and stretch to second channel, and two groups of idler wheels connect with motor, driven by motor
It can rotate and reverse；Card sensing element is installed in first passage；The image scanning method includes the following steps：Step A1,
Background value when in writing scan channel without card, using this as preset value as check reference range；Step A2, into
Before row card scan, upper Image Sensor and lower Image Sensor judge the background value in scan channel whether with it is default
Value is consistent, and is consistent with preset value and thens follow the steps A5, is thened follow the steps if the background value in scan channel is not inconsistent with preset value
A3；Step A3, roller group rotate and card are driven to move a Y distances；Step A4, upper Image Sensor and lower image sensing member
Part judges whether the background value in scan channel is consistent with preset value, is consistent with preset value, indicates that card is taken away scanning
Channel is consistent with preset value and thens follow the steps A5, if the background value in scan channel is not inconsistent with preset value thens follow the steps A8；
Step A8 presets a displacement distance, checks whether the card displacement distance of card displacement distance or accumulation exceeds preset movement
If distance re-executes step A3 without departing from preset displacement distance, is executed if beyond preset displacement distance
Step A9；Step A9, display card block；Step A5 stops detecting and carrying out image calibration, executes A6；Step A6 starts to sweep
It retouches until scanning completion, executes A7；Step A7 terminates to scan and exits card.
As a further improvement, the background value in the step A1 in writing scan channel when no card can go out
It obtains before factory or is obtained after scanning means booting.
As a further improvement, further comprise following steps between the step A1 and A2：Step S1, scanning means
Scan instruction is waited for after booting, when there is scan instruction, executes step S2, when no scan command continues waiting for；Step S2, card
Piece sensing element carries out card sensing and thens follow the steps S3 when card sensing element does not sense card, if card senses
Element sensing when having card to thening follow the steps A2；Step S3 is displayed without card standby signal.
As a further improvement, further comprise step S4 between the step S3 and A2, when card sensing element sense
When having measured card, two groups of idler wheels, which drive card to move an X distances to second channel, makes the rear end of card be moved to second channel
It is interior, just execute step A2 after executing the step S4.
As a further improvement, the maximum value of background value its preset value when in the scan channel without card is
B1, minimum value C1, wherein the upper Image Sensor of the step A2 and A4 and lower Image Sensor judge that scanning is logical
Whether the background value in road is consistent with preset value using following steps：Step S7-1, by current acquired background value
Maximum value and the maximum value of preset value are compared, and the maximum value for defining the background value currently obtained is B2, and definition currently takes
The minimum value of the background value obtained is C2, B2 and B1 is compared, if B2>B1 thens follow the steps A3 (corresponding step A2) or step
A8 (corresponding step A4), on the contrary then follow the steps S7-2；Step S7-2 compares C2 and C1, if C2<C1 thens follow the steps A3
(corresponding step A2) or step A8 (corresponding step A4), on the contrary then follow the steps A5.
As a further improvement, the maximum value of background value its preset value when in the scan channel without card is
B1, minimum value S1, the upper Image Sensor of the step A2 and A4 and lower Image Sensor judge in scan channel
Background value whether be consistent using following steps with preset value：Step S8-1, by the maximum of current acquired background value
Value and the maximum value of preset value are compared, and the maximum value for defining the background value currently obtained is B2, what definition currently obtained
The minimum value of background value is C2, C2 and C1 is compared, if C2<C1 thens follow the steps A3 (corresponding step A2) or step A8
(corresponding step A4), on the contrary then follow the steps S8-2；Step S8-2 compares B2 and B1, if B2>B1 thens follow the steps A3
(corresponding step A2) or step A8 (corresponding step A4), on the contrary then follow the steps A5.
As a further improvement, wherein Y distances are 1MM.
As a further improvement, wherein the preset displacement distance is 10MM.
As described above, scanning means of the present invention and its image scanning method pass through lower Image Sensor and upper image sensing
Whether the background value in element sensing scan channel is consistent with preset value, that is, senses in scan channel whether have card, when sweeping
Retouching in channel the when of having card sends a signal to motor, and card is taken away scan channel by two groups of idler wheels rotations of motor control, to
Ensure that card will not stretch into scan channel before scanning, card will not cover scanning read line, and scanning is complete, the quality of scanning compared with
It is good.A card sensing element need to be only arranged in scanning means and its image scanning method of the present invention, compare the first Xian You Ji Intraoperative
Scanning means reduce manufacturing cost, compare second of Xian You Ji Intraoperative scanning means, scanning quality it is preferable.
Description of the drawings
Fig. 1 is the diagrammatic cross-section of the first Xian You Ji Intraoperative scanning means.
Fig. 2, which is scanning means shown in Fig. 1, does not have the stereogram of upper cover.
Fig. 3 is schematic diagram when the preceding card of scanning means scanning shown in Fig. 2 rests on second channel.
Fig. 4 is the schematic diagram that second of Xian You Ji Intraoperative scanning means is inserted into before card preparation scanning.
Fig. 5 is a kind of diagrammatic cross-section of embodiment of scanning means of the present invention.
Fig. 6, which is scanning means of the present invention shown in Fig. 5, does not have the stereogram of upper cover.
Fig. 7 rests on schematic diagram when second channel for card before scanning means scanning of the present invention shown in Fig. 6.
Fig. 8 is the schematic diagram that second of embodiment of scanning means of the present invention is inserted into before card preparation scanning.
Fig. 9 is the flow diagram that the image scanning method of scanning means of the present invention is scanned.
Figure 10 is the flow diagram that the image scanning method of the first embodiment of scanning means of the present invention is scanned.
Figure 11 is the flow diagram that the image scanning method of second of embodiment of scanning means of the present invention is scanned.
Figure 12 is scanning means of the present invention and its image scanning method upper Image Sensor in step A2 and step A4
Judge whether the background value in scan channel is consistent with preset value the first embodiment of use with lower Image Sensor
Flow diagram.
Figure 13 is scanning means of the present invention and its image scanning method upper Image Sensor in step A2 and step A4
Judge whether the background value in scan channel is consistent with preset value second of embodiment of use with lower Image Sensor
Flow diagram.
It is each in figure that the reference numerals are as follows.
100 pedestal 10 of scanning means
11 upper cover 20 of lower groove
21 idler wheel 30 of upper groove
First idler wheel, 31 second idler wheel 32
Image Sensor 50 on lower Image Sensor 40
60 first passage 71 of card inductor
72 second channel 73 of scan channel
Scan 74 card 200 of read line.
Specific implementation mode
For technology contents, construction feature, the purpose realized and the technique effect that the present invention will be described in detail, below in conjunction with tool
Body embodiment simultaneously coordinates attached drawing to be described in detail.
Fig. 5 and Fig. 6 are please referred to, scanning means 100 of the present invention is covered on the upper cover on pedestal 10 including a pedestal 10, one
20, two groups of idler wheels 30, once Image Sensor 50, a card inductor 60 and a motor (figure on Image Sensor 40, one
Do not show).
Fig. 5 to Fig. 7 is please referred to, one is offered in the middle part of 10 upper surface of the pedestal in the lower groove 11 being laterally extended, institute
The middle part for stating 20 lower surface of upper cover corresponds to and offers one in the upper groove 21 that is laterally extended, the lower Image Sensor 40 and upper
Image Sensor 50 is respectively oppositely installed in lower groove 11 and upper groove 21.The upper cover 20 is covered on pedestal 10
Afterwards, logical in the front of upper Image Sensor 50 and lower Image Sensor 40 formation one first between upper cover 20 and pedestal 10
Road 71, forms a scan channel 72 between upper Image Sensor 50 and lower Image Sensor 40, upper cover 20 and pedestal 10 it
Between in the rear of upper Image Sensor 50 and lower Image Sensor 40 form the second channel 73 that is connected to outside.Two groups
The one of which idler wheel of idler wheel 30 is installed in pedestal and stretches to first passage 71, and another group of idler wheel is installed on pedestal 10 and stretches
Enter to second channel 73, two groups of idler wheels 30 are connect with motor, can be rotated and reverse by motor driving.Definition is installed in pedestal 10
It is the first idler wheel 31 to go up and stretch to the idler wheel in first passage 71, and definition is installed on pedestal 10 and stretches to second channel 73
Interior idler wheel is the second idler wheel 32.The first passage 71, scan channel 72 and second channel 73 are interconnected, the card sense
It answers device 60 to be installed in first passage 71, is equipped with a scanning read line 74 in scan channel 72, card inductor 60 is detecting
Whether to be scanned card 200 is had in first passage 71.
It please continue refering to Fig. 5 to Fig. 7, scanning means 100 of the present invention includes two kinds of embodiments, and wherein the first embodiment is swept
Imaging apparatus is that card 200 is inserted into from first passage 71, and the first idler wheel 31 and the second idler wheel 32 rotate forward and card 200 driven to pass through scanning
Channel 72 enters to second channel 73, until the rear end of card 200 enters to second channel 73.The rear end of card 200 and scanning
Read line 74 keeps certain distance, and then the first idler wheel 31 and the reversion of the second idler wheel 32 drives card 200 to pass through scan channel 73
It is scanned and is fed out from first passage 71.
Enter from first passage 71 referring to Fig. 8, the scanning means of second of embodiment is card 200, the first rolling
Wheel 31 and the second idler wheel 32, which rotate forward, drives card 200 to be scanned to card 200 across scan channel 72 and from second channel 73
It feeds out.
Fig. 5, Fig. 7 and Fig. 9 are please referred to, is the image scanning method being scanned using scanning means 100 of the present invention,
Include the following steps：
Step A1, background value when in writing scan channel 72 without card 200, using this as preset value as checking
Reference range；
Step A2, before carrying out the scanning of card 200, upper Image Sensor 50 and lower Image Sensor 40 judge that scanning is logical
Whether the background value in road 72 is consistent with preset value, is consistent with preset value and thens follow the steps A5, if the back of the body in scan channel 72
Scape numerical value be not inconsistent with preset value then follow the steps A3 (be consistent with preset value indicate card 200 do not rest in scan channel 72,
It is not consistent, indicates that card 200 is rested on or stretched in scan channel 72)；
Step A3, roller group 30 rotate and card 200 are driven to move a Y distances, execute A4；
Step A4, upper Image Sensor 50 and lower Image Sensor 40 judge that the background value in scan channel 72 is
It is no to be consistent with preset value, it is consistent with preset value, indicates that card 200 is taken away scan channel 72, be consistent with preset value, execute
Step A5, if the background value in scan channel 72 is not inconsistent with preset value thens follow the steps A8；
Step A8, preset a displacement distance, check accumulation 200 displacement distance of card whether beyond preset movement away from
From if without departing from preset displacement distance, step A3 being re-executed, if beyond executing step if preset displacement distance
Rapid A9；
Step A9, display card 200 block；
Step A5 stops detecting and carrying out image calibration, executes A6；
Step A6 starts scanning until scanning completion, executes A7；
Step A7 terminates to scan and exits card 200.Without card 200 in writing scan channel 72 in wherein step A1
When background value can be obtained before manufacture or scanning means booting after obtain.It defines in scan channel 72 without card 200
When the maximum value of background value its preset value be B1, minimum value C1.
Fig. 5, Fig. 7 and Figure 11 are please referred to, wherein further comprising following steps between the step A1 and A2：
Step S1, scanning means 100 waits for scan instruction (being triggered when being used by user) after being switched on, when there is scan instruction
When, step S2 is executed, when no scan command continues waiting for；
Step S2, card sensing element 60 carries out card sensing, when card sensing element 60 does not sense card 200,
S3 is thened follow the steps, if card sensing element 60 thens follow the steps A2 when having sensed card 200；
Step S3 is displayed without card standby signal.
Fig. 5, Fig. 7 and Figure 10 are please referred to, wherein in the first embodiment, i.e., card 200 enters from first passage 71, from
The scanning means that first passage 71 is fed out further comprises a step S4, when card sensing element 60 between step S3 and A2
When having sensed card 200, two groups of idler wheels 30, which drive card 200 to move an X distances to second channel 73, makes the rear end of card 200
In mobile second channel 73, step A2 is just executed after executing the step S4.
Fig. 5 and Figure 12 are please referred to, wherein upper Image Sensor 50 and lower image sensing in the step A2 and step A4
Element 40 judges that whether the background value in scan channel 72 is consistent the first embodiment of use with preset value, has following step
Suddenly：
The current acquired maximum value of background value and the maximum value of preset value are compared, are defined by step S7-1
The maximum value of the background value currently obtained is B2, and the minimum value for defining the background value currently obtained is C2, by B2 and B1 couples
Than if B2>B1 thens follow the steps A3 or step A8 (corresponding to step A2 and step A4 respectively), otherwise thens follow the steps S7-2；
Step S7-2 compares C2 and C1, if C2<C1 then follow the steps A3 or step A8 (correspond to respectively step A2 and
Step A4), on the contrary then follow the steps A5.
Fig. 5 and Figure 13 are please referred to, wherein upper Image Sensor 50 and lower Image Sensor in A2 the and A4 steps
Whether 40 background values for judging in scan channel 72 are consistent second of embodiment of use with preset value, have following steps：
The current acquired maximum value of background value and the maximum value of preset value are compared, are defined by step S8-1
The maximum value of the background value currently obtained is B2, and the minimum value for defining the background value currently obtained is C2, by C2 and C1 couples
Than if C2<C1 thens follow the steps A3 or step A8 (corresponding to step A2 and step A4 respectively), otherwise thens follow the steps S8-2；
Step S8-2 compares B2 and B1, if B2>B1 then follow the steps A3 or step A8 (correspond to respectively step A2 and
Step A4), on the contrary then follow the steps A5.
Fig. 5, Fig. 7, Fig. 8, Figure 10 and Figure 11 are please referred to, wherein Y distances are 1MM, the preset displacement distance is
10MM, i.e. repeatedly A3 steps 10 time.100 the first embodiment of scanning means wherein of the present invention is swept as scan method and the present invention
Second of the embodiment of imaging apparatus 100 as scan method the difference is that, the picture scan method of the first embodiment is than second
The more step S4 of the picture scan method of embodiment, the first embodiment two groups of idler wheels 30 before being scanned drive cards 200 to
Second channel 73, which moves an X distances, makes the rear end of card 200 be moved in second channel 73, and the scanning dress of second of embodiment
Set then without the step for, card 200 rests on first passage 71 before being scanned.In addition, when carrying out Y distance movements, the
A kind of embodiment is that the second idler wheel 32 drives the front movement towards card 200 to carry out adjustment, and second of embodiment is the first rolling
Wheel 31 drives the rear movement towards card 200 to carry out adjustment.
In conclusion scanning means 100 of the present invention and its image scanning method pass through lower Image Sensor 40 and upper shadow
As sensing element 50 senses whether the background value in scan channel 72 is consistent with preset value, that is, sense in scan channel 72 whether
There is card 200, motor is sent a signal to when having card 200 in scan channel 72, two groups of rotations of idler wheel 30 of motor control will card
Piece 200 takes away scan channel 72, and to ensure that card 200 will not stretch into scan channel 72 before scanning, card 200 will not hide
Scanning read line 74 is covered, scanning is complete, and the quality of scanning is preferable.A card sensing element need to be only arranged in scanning means of the present invention
60, the scanning means compared to the first Xian You Ji Intraoperative reduces manufacturing cost, compares the scanning means of second of Xian You Ji Intraoperative,
The quality of scanning is preferable.
Claims (9)
1. a kind of scanning means can be scanned card, it is characterised in that：Including a pedestal, a upper cover, once image sensing
Element, Image Sensor, at least a motor, two groups of idler wheels and a card sensing element on one；It is opened in the middle part of base upper surface
Equipped with a lower groove；
Upper cover is articulated on pedestal, and the middle part of the upper cover lower surface, which corresponds to, offers a upper groove at lower groove；Lower image sensing
Element is installed in lower groove；
Upper Image Sensor is installed in upper groove, and the upper cover is articulated on pedestal, after being above covered on pedestal, upper cover and
Between pedestal in the front of upper Image Sensor and lower Image Sensor formed a first passage, upper Image Sensor and
A scan channel is formed between lower Image Sensor, in upper Image Sensor and lower image sensing member between upper cover and pedestal
The rear of part forms a second channel being connected to outside, and first passage, scan channel and second channel are interconnected, and scanning is logical
A scanning read line is equipped in road；
Motor is installed on pedestal；The one of which idler wheel of two groups of idler wheels is installed in pedestal and stretches to first passage, another group
Idler wheel is installed on pedestal and stretches to second channel, and two groups of idler wheels are connect with motor, can be rotated and reverse by motor driving；
Card sensing element is installed in first passage.
2. a kind of image scanning method suitable on scanning means can be scanned card, it is characterised in that：
The scanning means include a pedestal, a upper cover, once Image Sensor, Image Sensor on one, an at least motor,
Two groups of idler wheels and a card sensing element；
A lower groove is offered in the middle part of base upper surface；
Upper cover is articulated on pedestal, and the middle part of the upper cover lower surface, which corresponds to, offers a upper groove at lower groove；Lower image sensing
Element is installed in lower groove；
Upper Image Sensor is installed in upper groove, and the upper cover is articulated on pedestal, after being above covered on pedestal, upper cover and
Between pedestal in the front of upper Image Sensor and lower Image Sensor formed a first passage, upper Image Sensor and
A scan channel is formed between lower Image Sensor, in upper Image Sensor and lower image sensing member between upper cover and pedestal
The rear of part forms a second channel being connected to outside, and first passage, scan channel and second channel are interconnected, and scanning is logical
A scanning read line is equipped in road；Motor is installed on pedestal；
The one of which idler wheel of two groups of idler wheels is installed in pedestal and stretches to first passage, and another group of idler wheel is installed on pedestal simultaneously
Second channel is stretched to, two groups of idler wheels are connect with motor, can be rotated and reverse by motor driving；
Card sensing element is installed in first passage；The image scanning method includes the following steps：Step A1, writing scan are logical
Background value when in road without card, using this as preset value as check reference range；
Step A2, before carrying out card scan, upper Image Sensor and lower Image Sensor judge the background in scan channel
Whether numerical value is consistent with preset value, is consistent with preset value and thens follow the steps A5, if the background value in scan channel and preset value
It is not inconsistent and thens follow the steps A3；Step A3, roller group rotate and card are driven to move a Y distances；
Step A4, upper Image Sensor and lower Image Sensor judge the background value in scan channel whether with preset value
It is consistent, is consistent with preset value, indicate that card is taken away scan channel, be consistent with preset value and then follow the steps A5, if scanning is logical
Background value in road is not inconsistent with preset value thens follow the steps A8；
Whether the card displacement distance of step A8, a default displacement distance, inspection card displacement distance or accumulation is beyond preset
If displacement distance re-executes step A3 without departing from preset displacement distance, if beyond preset displacement distance
Execute step A9；
Step A9, display card block；
Step A5 stops detecting and carrying out image calibration, executes A6；
Step A6 starts scanning until scanning completion, executes A7；
Step A7 terminates to scan and exits card.
3. image scanning method as claimed in claim 2, it is characterised in that：In the wherein described step A1 in writing scan channel
There is no background value when card that can obtain before manufacture or be obtained after scanning means booting.
4. image scanning method as claimed in claim 2, it is characterised in that：Further comprise between the step A1 and A2 as
Lower step：Step S1 waits for scan instruction after scanning means booting, when there is scan instruction, executes step S2, does not scan life
It is continued waiting for when enabling；
Step S2, card sensing element carry out card sensing and are thened follow the steps when card sensing element does not sense card
S3, if card sensing element thens follow the steps A2 when having sensed card；
Step S3 is displayed without card standby signal.
5. image scanning method as claimed in claim 4, it is characterised in that：Further comprise walking between the step S3 and A2
Rapid S4, when card sensing element has sensed card, two groups of idler wheels, which drive card to move an X distances to second channel, makes card
Rear end be moved in second channel, just execute step A2 after executing the step S4.
6. image scanning method as claimed in claim 2, it is characterised in that：Background when in the scan channel without card
The maximum value of its preset value of numerical value is B1, minimum value C1, wherein the upper Image Sensor of the step A2 and A4 is under
Image Sensor judges whether the background value in scan channel is consistent with preset value using following steps：Step S7-1, will
The current acquired maximum value of background value and the maximum value of preset value are compared, and the background value currently obtained is defined
Maximum value is B2, and the minimum value for defining the background value currently obtained is C2, B2 and B1 is compared, if B2>B1 then executes step
Rapid A3 (corresponding step A2) or step A8 (corresponding step A4), on the contrary then follow the steps S7-2；Step S7-2, by C2 and C1 couples
Than if C2<C1 thens follow the steps A3 (corresponding step A2) or step A8 (corresponding step A4), otherwise thens follow the steps A5.
7. image scanning method as claimed in claim 2, it is characterised in that：Background when in the scan channel without card
The maximum value of its preset value of numerical value is B1, minimum value S1, the upper Image Sensor of the step A2 and A4 and lower image
Sensing element judges whether the background value in scan channel is consistent with preset value using following steps：Step S8-1, will be current
The maximum value of acquired background value and the maximum value of preset value are compared, and the maximum of the background value currently obtained is defined
Value is B2, and the minimum value for defining the background value currently obtained is C2, C2 and C1 is compared, if C2<C1 thens follow the steps A3
(corresponding step A2) or step A8 (corresponding step A4), on the contrary then follow the steps S8-2；
Step S8-2 compares B2 and B1, if B2>B1 thens follow the steps A3 (corresponding step A2) or step A8 (corresponding steps
A4), otherwise A5 is thened follow the steps.
8. image scanning method as claimed in claim 2, it is characterised in that：The wherein described Y distances are 1MM.
9. image scanning method as claimed in claim 2, it is characterised in that：The wherein described preset displacement distance is 10MM.
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| US8036465B2 (en) * | 2003-09-26 | 2011-10-11 | Khomo Malome T | Method of text interaction using chirographic techniques |
| TWI416939B (en) * | 2005-11-02 | 2013-11-21 | Visioneer Inc | Combination document and card reader scanner |
| CN102065198A (en) * | 2010-06-24 | 2011-05-18 | 苏州佳世达电通有限公司 | Scanning device |
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| TWM524597U (en) * | 2015-12-21 | 2016-06-21 | 崴強科技股份有限公司 | Adjustable contact image sensor scanner |
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