CN109523686A - Imaging sensor - Google Patents
Imaging sensor Download PDFInfo
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- CN109523686A CN109523686A CN201811446178.3A CN201811446178A CN109523686A CN 109523686 A CN109523686 A CN 109523686A CN 201811446178 A CN201811446178 A CN 201811446178A CN 109523686 A CN109523686 A CN 109523686A
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- Prior art keywords
- magnetic field
- magnetic
- permanent magnet
- imaging sensor
- circuit board
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- 238000003384 imaging method Methods 0.000 title claims abstract description 52
- 238000009434 installation Methods 0.000 claims abstract description 15
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 10
- 238000001514 detection method Methods 0.000 claims description 10
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 239000000696 magnetic material Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims 1
- 239000010931 gold Substances 0.000 claims 1
- 229910052737 gold Inorganic materials 0.000 claims 1
- 238000009826 distribution Methods 0.000 abstract description 11
- 230000000052 comparative effect Effects 0.000 description 14
- 238000012360 testing method Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 4
- 230000005389 magnetism Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07D—HANDLING OF COINS OR VALUABLE PAPERS, e.g. TESTING, SORTING BY DENOMINATIONS, COUNTING, DISPENSING, CHANGING OR DEPOSITING
- G07D7/00—Testing specially adapted to determine the identity or genuineness of valuable papers or for segregating those which are unacceptable, e.g. banknotes that are alien to a currency
- G07D7/04—Testing magnetic properties of the materials thereof, e.g. by detection of magnetic imprint
Abstract
The present invention provides a kind of imaging sensors, comprising: framework, framework have installation cavity；Magnetic image reading part, magnetic image reading part are used to read the magnetic information on original copy, and magnetic image reading part is arranged in installation cavity, magnetic image reading part includes permanent magnet and magnetic field-intensification structure, wherein, magnetic field-intensification structure setting is in the bottom of permanent magnet, to enhance the magnetic field strength of permanent magnet generation.The present invention solves imaging sensor in the prior art and is generating the intensity that can weaken magnetic field while magnetic field carries out distribution homogenizing to permanent magnet, and the clarity for examining the magnetic information on the original copy that detects of imaging sensor is caused to be deteriorated, and then the problem of increase the subsequent difficulty to image procossing.
Description
Technical field
The present invention relates to image sensing technical fields, in particular to a kind of imaging sensor.
Background technique
For the anti-fake of the original copys such as bank note, bill or marketable securities, mainly using on imaging sensor detection original copy
The mode of magnetic information is realized, i.e., by imaging sensor caused by the extraneous factors such as magnetic field, electric current, ess-strain, temperature, light
The magnetic property of sensing element is converted into electric signal, and come on matching detection original copy by way of being analyzed and processed to electric signal
Corresponding magnetic information, to realize the authenticity to original copy.
Magnetic image reading part is arranged in existing imaging sensor usually in framework, and magnetic image reading part includes row's permanent magnetism
Body, permanent magnet can generate magnetic field, when the original copy with magnetic information passes through the surface of imaging sensor, can cause the magnetic flux in magnetic field
Amount variation, changes so as to cause the intensity in magnetic field, and such variation can pass through the magnetic chip of magnetic image reading part, control chip
It is converted into the variation of electric signal with carrying circuit board, is finally completed magnetic detection.
And in order to ensure imaging sensor is to the reading accuracy of magnetic information on original copy, the magnetic field for needing permanent magnet to generate is most
It may be evenly distributed, in the prior art, be homogenized plate by the way that magnetic field is arranged above permanent magnet, the magnetic field for realizing that permanent magnet generates exists
The intensity of horizontal direction is equal everywhere, although magnetic field is evenly distributed in the horizontal direction, but the intensity in magnetic field is big
The earth weakens, in this way, the clarity of the magnetic information on the original copy detected is caused to be deteriorated, and then increase it is subsequent to image at
The difficulty of reason.
Summary of the invention
The main purpose of the present invention is to provide a kind of imaging sensors, are existed with solving imaging sensor in the prior art
The intensity in magnetic field can be weakened by generating while magnetic field carries out distribution homogenizing to permanent magnet, and cause to examine what imaging sensor detected
The clarity of magnetic information on original copy is deteriorated, and then the problem of increase the subsequent difficulty to image procossing.
To achieve the goals above, the present invention provides a kind of imaging sensors, comprising: framework, framework have installation cavity；
Magnetic image reading part, magnetic image reading part are used to read the magnetic information on original copy, and magnetic image reading part is arranged in installation cavity, magnetic
Image reading unit includes permanent magnet and magnetic field-intensification structure, wherein magnetic field-intensification structure setting is in the bottom of permanent magnet, with enhancing
The magnetic field strength that permanent magnet generates.
Further, magnetic field-intensification structure is detachably connect with permanent magnet, and magnetic field-intensification structure is plate shaped, magnets or can
By the metal plate of permanent magnet magnetization.
Further, magnetic field-intensification structure is iron plate, and magnetic field-intensification structure is connect by fastener with permanent magnet；Or magnetic field
Reinforced structure is Nian Jie with the bottom surface of permanent magnet；Or magnetic field-intensification structure is embedded on the bottom surface of permanent magnet in such a way that interference is installed
In the mounting groove opened up.
Further, the thickness of magnetic field-intensification structure is more than or equal to 0.3mm and is less than or equal to 2mm.
Further, magnetic image reading part further includes magnetic field homogenizing plate, and magnetic field is homogenized the top of plate setting permanent magnet.
Further, the thickness of magnetic field homogenizing plate is more than or equal to 0.3mm and is less than or equal to 2mm.
Further, magnetic image reading part further includes first circuit board, magnetic chip and control chip, wherein the first circuit
The top of magnetic field homogenizing plate is arranged in plate, and magnetic chip and control chip connect with first circuit board and be located at first circuit board
Away from the side of magnetic field homogenizing plate.
Further, the top of framework has the detection opening that be connected to installation cavity, imaging sensor further include cover board with
Gasket, cover plate lid are located in framework and block detection opening, and gasket is arranged in installation cavity and supports and is arranged in cover board and first
Between circuit board, is collided when preventing original copy from passing through the upper surface of cover board with cover board and cause cover board chatter.
Further, cover board is made of stainless steel, and gasket is connect with cover board and/or first circuit board, and by non-magnetic material
Material is made.
Further, imaging sensor further includes second circuit board, and second circuit board is removably set by tightening member
Set the bottom in framework and with first circuit board by cable connection, second circuit board is used to connect with external devices.
It applies the technical scheme of the present invention, by the way that magnetic field-intensification structure, magnetic field-intensification structure is arranged in the bottom of permanent magnet
There can be magnetism, the distribution situation equivalent to increase the integral thickness of permanent magnet, in the magnetic field for not influencing permanent magnet generation
Under, the intensity in magnetic field in framework is effectively enhanced, to improve permanent magnet to the magnetizability of magnetic medium, is conducive to mention
The clarity for rising the magnetic information on the original copy that imaging sensor detects, thereby reduces the subsequent difficulty to image procossing, greatly
The earth improves imaging sensor to the resolving ability of the original copy true and false.
Detailed description of the invention
The accompanying drawings constituting a part of this application is used to provide further understanding of the present invention, and of the invention shows
Examples and descriptions thereof are used to explain the present invention for meaning property, does not constitute improper limitations of the present invention.In the accompanying drawings:
Fig. 1 shows a kind of schematic diagram of internal structure of the imaging sensor of alternative embodiment according to the present invention；
Fig. 2 shows the magnetic images having in imaging sensor in the prior art and the application there are two types of alternative embodiment
The scatter chart of magnetic field produced by the imaging sensor of reading part in the longitudinal direction；
Fig. 3, which is shown, has other two alternative embodiment in another imaging sensor in the prior art and the application
Magnetic image reading part imaging sensor produced by the scatter chart of magnetic field in the longitudinal direction.
Wherein, the above drawings include the following reference numerals:
10, framework；11, installation cavity；12, detection opening；20, magnetic image reading part；21, permanent magnet；22, magnetic field-intensification knot
Structure；23, magnetic field is homogenized plate；24, first circuit board；25, magnetic chip；26, chip is controlled；30, cover board；40, gasket；50, second
Circuit board；60, tightening member.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that the described embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.It is right below
The description only actually of at least one exemplary embodiment be it is illustrative, never as to the present invention and its application or use
Any restrictions.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
Every other embodiment obtained, shall fall within the protection scope of the present invention.
Meeting while magnetic field carries out distribution homogenizing is being generated to permanent magnet in order to solve imaging sensor in the prior art
The intensity in magnetic field is weakened, and causes the clarity for examining the magnetic information on the original copy that imaging sensor detects to be deteriorated, and then increase
The problem of subsequent difficulty to image procossing, the present invention provides a kind of imaging sensor.
As shown in Figure 1, imaging sensor includes framework 10 and magnetic image reading part 20, framework 10 has installation cavity 11, magnetic
Image reading unit 20 is used to read the magnetic information on original copy, and magnetic image reading part 20 is arranged in installation cavity 11, and magnetic image is read
Portion 20 includes permanent magnet 21 and magnetic field-intensification structure 22, wherein the bottom of permanent magnet 21 is arranged in magnetic field-intensification structure 22, to increase
The magnetic field strength that strong permanent magnet 21 generates.
By the way that magnetic field-intensification structure 22 is arranged in the bottom of permanent magnet 21, magnetic field-intensification structure 22 can have magnetism, phase
Effectively increase when in the integral thickness for increasing permanent magnet 21 in the case where not influencing the distribution situation in magnetic field of the generation of permanent magnet 21
The intensity in magnetic field is conducive to promote image to improve permanent magnet 21 to the magnetizability of magnetic medium in strong framework 10
The clarity for the magnetic information on original copy that sensor detects thereby reduces the subsequent difficulty to image procossing, greatly mentions
High resolving ability of the imaging sensor to the original copy true and false.
For the ease of replacing the magnetic field-intensification structure 22 of different structure size consequently facilitating adjusting the magnetic field of imaging sensor
Intensity, optionally, magnetic field-intensification structure 22 are detachably connect with permanent magnet 21.
And can equally be equivalent to increase permanent magnet 21 thickness with have the function that strengthen imaging sensor internal magnetic field,
Magnetic field-intensification structure 22 is plate shaped, magnets or can be by the magnetized metal plate of permanent magnet 21.
In the alternative embodiment of the application, it is contemplated that iron plate can efficiently be magnetized by permanent magnet 21, and have excellent
Economy, optionally, magnetic field-intensification structure 22 be iron plate.Present invention also provides a variety of permanent magnets 21 and magnetic field-intensification structure
22 mounting means can ensure the stable connection of the two, and be conveniently replaceable magnetic field-intensification structure 22；Specifically, magnetic field
Reinforced structure 22 can be connect by fastener with permanent magnet 21；Or magnetic field-intensification structure 22 is Nian Jie with the bottom surface of permanent magnet 21；
Or magnetic field-intensification structure 22 is embedded in the mounting groove opened up on the bottom surface of permanent magnet 21 in such a way that interference is installed.
Optionally, the optimization thickness as a kind of magnetic field-intensification structure 22, in the magnetic for ensuring to generate permanent magnet 21
Effectively strengthen and under the premise of meeting requirement, it is contemplated that installation and imaging sensor convenient for magnetic field-intensification structure 22
Light-weight design, the thickness of magnetic field-intensification structure 22 is more than or equal to 0.3mm and is less than or equal to 2mm.
As shown in Figure 1, magnetic image reading part 20 further includes magnetic field homogenizing plate 23, magnetic field is homogenized plate 23 and permanent magnet 21 is arranged
Top.The main function of magnetic field homogenizing plate 23 is the homogenization that the non-uniform magnetic field of power that permanent magnet 21 is generated becomes, so that
Imaging sensor provides a stable magnetic field environment.
Optionally, the thickness of magnetic field homogenizing plate 23 is more than or equal to 0.3mm and is less than or equal to 2mm.
Optionally, homogenizing plate 23 in magnetic field is iron plate.
As shown, magnetic image reading part 20 further includes first circuit board 24, magnetic chip 25 and control chip 26, wherein
The top of magnetic field homogenizing plate 23 is arranged in first circuit board 24, and magnetic chip 25 and control chip 26 are connect with first circuit board 24
And it is located at the side away from magnetic field homogenizing plate 23 of first circuit board 24.Magnetic chip 25 can detect magnetic by the change in magnetic field
The change of signal, control chip 26 are then the magnetic signals for controlling generation, are carried out at data output by first circuit board 24
Reason.
As shown in Figure 1, the top of framework 10 has the detection opening 12 being connected to installation cavity 11, imaging sensor further includes
Cover board 30 and gasket 40, the lid of cover board 30 are located in framework 10 and block detection opening 12, and gasket 40 is arranged in installation cavity 11 simultaneously
Support is arranged between cover board 30 and first circuit board 24, collides when preventing original copy from passing through the upper surface of cover board 30 with cover board 30
And cause 30 chatter of cover board.
By the way that gasket 40 is arranged between cover board 30 and first circuit board 24, since gasket 40 and the lower surface of cover board 30 connect
Touching, to play the supporting role to cover board 30, increase the structural strength of cover board 30, avoid due to cover board 30 is excessively thin
There is a phenomenon where chatter generation when being hit, prevent because being covered caused by being collided when original copy passes through the upper surface of cover board 30 with cover board 30
30 chatter of plate and signal that the noise generated generates magnetic image reading part 20 interfere, and improve the output performance of signal,
It also can increase magnetic induction intensity simultaneously, and then ensure that imaging sensor to the accuracy of the testing result of original copy, improves figure
As the functional reliability of sensor.
Optionally, cover board 30 is made of stainless steel, in this way, improving the wear-resisting property of cover board 30, avoids cover board 30 long-term
It directly contacts and is worn with original copy, and influence the aesthetic appearance of imaging sensor.
It should be noted that the static elimination that can will be generated on cover board 30 by way of being grounded cover board 30, increases
Signal output.
In order to avoid the magnetic field that gasket 40 generates permanent magnet 21 interferes, optionally, gasket 40 is by un-conducted magnetic material
It is made.
In order to improve the mounting stability of gasket 40, gasket 40 is connect with cover board 30 and/or first circuit board 24.
As shown in Figure 1, imaging sensor further includes second circuit board 50, second circuit board 50 is removable by tightening member 60
The bottom of framework 10 is set with unloading and with first circuit board 24 by cable connection, second circuit board 50 is used for and external equipment
Connection.Pass through the Design Orientation mounting structure on second circuit board 50, moreover it is possible to realize the connection of imaging sensor and external equipment
The fine tuning of 10 flatness of framework also may be implemented by correcting the flatness of second circuit board 50 in combination.Framework 10 and the second electricity
Road plate 50 is connected together by tightening member 60.
Illustratively below with reference to Fig. 2 and Fig. 3, magnetic field strength survey is carried out by implementing technical solution provided by the present application
Examination, institute it is attainable to permanent magnet 21 generation magnetic field strengthening effect.
In Fig. 2, including comparative example 1, embodiments herein 1 and embodiments herein 2, the magnetic of three kinds of different structures
The scatter chart of the magnetic field of the imaging sensor of image reading unit 20 in the longitudinal direction, wherein the image in comparative example 1 passes
The magnetic field strength of the permanent magnet of the magnetic image reading part of sensor is 800GS, below not set magnetic field-intensification structure, permanent magnet
The magnetic field that 0.3mm thickness is arranged in top is homogenized plate；Interval 1mm is carried out in the longitudinal direction along the center of permanent magnet with gaussmeter
It is tested, the distribution curve of obtained magnetic field strength alongst, by the curve of the comparative example 1 in Fig. 2 it is found that magnetic field
Minimum point is distributed in 710GS or more.
And in embodiment 1, the difference with comparative example 1 is, places 0.3mm thickness in this embodiment below permanent magnet
Magnetic field-intensification structure；Remaining test condition is constant, and test result is as shown in the curve of embodiment 1 in Fig. 2, Distribution of Magnetic Field minimum point
In 740GS or more, magnetic field strength is apparently higher than comparative example 1.
And in example 2, the difference with comparative example 1 is, places 0.6mm thickness in this embodiment below permanent magnet
Magnetic field-intensification structure；Remaining test condition is constant, and test result is as shown in the curve of embodiment 1 in Fig. 2, Distribution of Magnetic Field minimum point
In 780GS or more, magnetic field strength is apparently higher than comparative example 1 and embodiment 1, it is seen then that by increasing the thickness of magnetic field-intensification structure,
It is able to ascend the magnetic field strength of imaging sensor.
In Fig. 3, including comparative example 2, embodiments herein 3 and embodiments herein 4, the magnetic of three kinds of different structures
The scatter chart of the magnetic field of the imaging sensor of image reading unit 20 in the longitudinal direction, wherein the image in comparative example 2 passes
The magnetic field strength of the permanent magnet of the magnetic image reading part of sensor is 800GS, below not set magnetic field-intensification structure, permanent magnet
The magnetic field that 0.6mm thickness is arranged in top is homogenized plate；Interval 1mm is carried out in the longitudinal direction along the center of permanent magnet with gaussmeter
It is tested, the distribution curve of obtained magnetic field strength alongst, by the curve of the comparative example 2 in Fig. 3 it is found that magnetic field
Minimum point is distributed in 670GS or more.
And in embodiment 3, the difference with comparative example 2 is, places 0.3mm thickness in this embodiment below permanent magnet
Magnetic field-intensification structure；Remaining test condition is constant, and test result is as shown in the curve of embodiment 1 in Fig. 2, Distribution of Magnetic Field minimum point
In 695GS or more, magnetic field strength is apparently higher than comparative example 2.
And in example 4, the difference with comparative example 2 is, places 0.6mm thickness in this embodiment below permanent magnet
Magnetic field-intensification structure；Remaining test condition is constant, and test result is as shown in the curve of embodiment 1 in Fig. 2, Distribution of Magnetic Field minimum point
In 730GS or more, magnetic field strength is apparently higher than comparative example 2 and embodiment 3, it is seen then that by increasing the thickness of magnetic field-intensification structure,
It is able to ascend the magnetic field strength of imaging sensor.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, operation, device, component and/or their combination.
Unless specifically stated otherwise, positioned opposite, the digital table of the component and step that otherwise illustrate in these embodiments
It is not limited the scope of the invention up to formula and numerical value.Simultaneously, it should be appreciated that for ease of description, each portion shown in attached drawing
The size divided not is to draw according to actual proportionate relationship.For technology, side known to person of ordinary skill in the relevant
Method and equipment may be not discussed in detail, but in the appropriate case, and the technology, method and apparatus should be considered as authorizing explanation
A part of book.In shown here and discussion all examples, any occurrence should be construed as merely illustratively, and
Not by way of limitation.Therefore, the other examples of exemplary embodiment can have different values.It should also be noted that similar label
Similar terms are indicated in following attached drawing with letter, therefore, once it is defined in a certain Xiang Yi attached drawing, then subsequent attached
It does not need that it is further discussed in figure.
For ease of description, spatially relative term can be used herein, as " ... on ", " ... top ",
" ... upper surface ", " above " etc., for describing such as a device shown in the figure or feature and other devices or spy
The spatial relation of sign.It should be understood that spatially relative term is intended to comprising the orientation in addition to device described in figure
Except different direction in use or operation.For example, being described as if the device in attached drawing is squeezed " in other devices
It will be positioned as " under other devices or construction after part or construction top " or the device of " on other devices or construction "
Side " or " under other devices or construction ".Thus, exemplary term " ... top " may include " ... top " and
" in ... lower section " two kinds of orientation.The device can also be positioned with other different modes and (is rotated by 90 ° or in other orientation), and
And respective explanations are made to the opposite description in space used herein above.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root
According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singular
Also it is intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet
Include " when, indicate existing characteristics, step, work, device, component and/or their combination.
It should be noted that the description and claims of this application and term " first " in above-mentioned attached drawing, "
Two " etc. be to be used to distinguish similar objects, without being used to describe a particular order or precedence order.It should be understood that using in this way
Data be interchangeable under appropriate circumstances, so that presently filed embodiment described herein can be in addition to illustrating herein
Or the sequence other than those of description is implemented.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of imaging sensor characterized by comprising
Framework (10), the framework (10) have installation cavity (11)；
Magnetic image reading part (20), the magnetic image reading part (20) are used to read the magnetic information on original copy, and the magnetic image is read
Take portion (20) setting in the installation cavity (11), the magnetic image reading part (20) includes permanent magnet (21) and magnetic field-intensification knot
Structure (22), wherein the magnetic field-intensification structure (22) is arranged in the bottom of the permanent magnet (21), to enhance the permanent magnet
(21) magnetic field strength generated.
2. imaging sensor according to claim 1, which is characterized in that the magnetic field-intensification structure (22) is detachably and institute
Permanent magnet (21) connection is stated, the magnetic field-intensification structure (22) is plate shaped, magnets or can be by the permanent magnet (21) magnetized gold
Belong to plate.
3. imaging sensor according to claim 2, which is characterized in that the magnetic field-intensification structure (22) is iron plate,
The magnetic field-intensification structure (22) is connect by fastener with the permanent magnet (21)；Or
The magnetic field-intensification structure (22) is Nian Jie with the bottom surface of the permanent magnet (21)；Or
The magnetic field-intensification structure (22) is embedded the peace opened up on the bottom surface of the permanent magnet (21) in such a way that interference is installed
In tankage.
4. imaging sensor according to claim 2 or 3, which is characterized in that the thickness of the magnetic field-intensification structure (22)
More than or equal to 0.3mm and it is less than or equal to 2mm.
5. imaging sensor according to claim 1, which is characterized in that the magnetic image reading part (20) further includes magnetic field
It is homogenized plate (23), the top of the permanent magnet (21) is arranged in magnetic field homogenizing plate (23).
6. imaging sensor according to claim 5, which is characterized in that the thickness of magnetic field homogenizing plate (23) is greater than etc.
In 0.3mm and it is less than or equal to 2mm.
7. imaging sensor according to claim 5, which is characterized in that the magnetic image reading part (20) further includes first
Circuit board (24), magnetic chip (25) and control chip (26), wherein first circuit board (24) setting is homogenized in the magnetic field
The top of plate (23), the magnetic chip (25) and the control chip (26) connect and are located at the first circuit board (24)
The side away from magnetic field homogenizing plate (23) of the first circuit board (24).
8. imaging sensor according to claim 7, which is characterized in that the top of the framework (10) has and the peace
Behave affectedly (11) connection detection opening (12), described image sensor further includes cover board (30) and gasket (40), the cover board
(30) lid is located on the framework (10) and blocks the detection opening (12), and the gasket (40) is arranged in the installation cavity
(11) in and support setting between the cover board (30) and the first circuit board (24), to prevent described in the original copy process
It is collided when the upper surface of cover board (30) with the cover board (30) and causes the cover board (30) chatter.
9. imaging sensor according to claim 8, which is characterized in that the cover board (30) is made of stainless steel, described
Gasket (40) is connect with the cover board (30) and/or the first circuit board (24), and is made of un-conducted magnetic material.
10. imaging sensor according to claim 7, which is characterized in that described image sensor further includes second circuit
Plate (50), the second circuit board (50) by tightening member (60) be removably disposed in the framework (10) bottom and with
The first circuit board (24) is used to connect with external devices by cable connection, the second circuit board (50).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446178.3A CN109523686A (en) | 2018-11-29 | 2018-11-29 | Imaging sensor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811446178.3A CN109523686A (en) | 2018-11-29 | 2018-11-29 | Imaging sensor |
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| CN109523686A true CN109523686A (en) | 2019-03-26 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031209A (en) * | 2019-12-17 | 2020-04-17 | 威海华菱光电股份有限公司 | Image processing apparatus |
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| CN209000104U (en) * | 2018-11-29 | 2019-06-18 | 威海华菱光电股份有限公司 | Imaging sensor |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111031209A (en) * | 2019-12-17 | 2020-04-17 | 威海华菱光电股份有限公司 | Image processing apparatus |
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