CN207612324U - A kind of image collecting device for the encryption paper based on magnetic fibre - Google Patents
A kind of image collecting device for the encryption paper based on magnetic fibre Download PDFInfo
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- CN207612324U CN207612324U CN201721325618.0U CN201721325618U CN207612324U CN 207612324 U CN207612324 U CN 207612324U CN 201721325618 U CN201721325618 U CN 201721325618U CN 207612324 U CN207612324 U CN 207612324U
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- magnetic
- paper
- encryption
- rotating platform
- image
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Abstract
A kind of image collecting device for the encryption paper based on magnetic fibre, including rotating platform are fixed for that will encrypt paper；Stepper motor is provided on rotating platform, light supply apparatus is radiated at by rotating platform on encryption paper；Magnetizing assembly is powered by the magnetizing assembly that yoke and magnetizing coil form and generates magnetic field, and strong magnetic treatment is carried out in order to which magnetic powder adsorbs to the encryption paper on rotating platform；Magnetic powder flusher at the uniform velocity sprays black magnetic powder Fe to the encryption paper after strong magnetic3O4It carries out covering and forms magnetic trace, form magnetic fibre and encrypt paper；CCD camera is used to acquire the image of magnetic fibre encryption paper；Image pick-up card is used to receive the image data of CCD camera transmission；Main control computer is used to send instruction control micro-step motor to slave computer by host computer interface, store the data of image pick-up card and follow-up identifying processing, the utility model, which has, improves recognition efficiency, ensures to distinguish accuracy rate, paper is made to identify more intelligentized feature.
Description
Technical field
The utility model is related to image acquisition technology fields, more particularly to a kind of to be directed to the encryption paper based on magnetic fibre
Image collecting device.
Background technology
In recent years, while bill operation rapidly develops, some criminals by cloning, the gimmicks system such as adulterium bill
Counterfeit bill is made, this not only causes heavy economic losses to country, but also affects the stabilization of financial order.Therefore, it is based on magnetic
The encryption paper of property fiber generates therewith, and anti-counterfeiting performance is stronger.But since encryption information is embedded in paper fibre, so human eye
Encryption paper can not be distinguished by appearance and other characteristics.
Invention content
To solve the above-mentioned problems, the utility model provide and it is a kind of for based on magnetic fibre encryption paper figure
As harvester, solve the problems, such as that human eye can not distinguish encryption paper from the appearance, after the advance acquisition process of the device
Paper image improves recognition efficiency, ensures to distinguish accuracy rate, keeps paper identification more intelligent.
To achieve the above object, the technical solution adopted in the utility model is：
A kind of image collecting device for the encryption paper based on magnetic fibre, including,
Rotating platform 3：It is fixed for paper will to be encrypted；Micro-step motor, stepping electricity are provided on rotating platform 3
Machine rotates and turn over the offer of rotating platform 3；
Light supply apparatus：It is radiated on encryption paper by rotating platform；
Magnetizing assembly 4：The magnetizing assembly being made up of yoke and magnetizing coil, which is powered, generates magnetic field, on rotating platform 3
Encryption paper carry out strong magnetic treatment in order to which magnetic powder adsorbs；
Magnetic powder flusher 5：It is driven by micro-step motor, black magnetic powder is at the uniform velocity sprayed to the encryption paper after strong magnetic
Fe3O4It carries out covering and forms magnetic trace, form magnetic fibre and encrypt paper；
CCD camera 2：The image of paper is encrypted for acquiring magnetic fibre；
Image pick-up card 6：Image data for receiving the transmission of CCD camera 2；
Main control computer 7：For sending instruction control micro-step motor, storage figure to slave computer by host computer interface
As the data of capture card 6 are for follow-up identifying processing.
Information inside the magnetic fibre encryption paper is word, seal or bar code.
The light supply apparatus is 1 light source of bar-shaped LED, and the top of rotating platform 3 is fixedly mounted on by holder.
The CCD camera 2 is fixedly mounted on rotary flat using the auto iris fixed-focus CCD camera lenses of 600 lines by holder
The top of platform 3, the encryption paper after being covered to magnetic powder carry out Image Acquisition.
The rotating platform 3 is placed among magnetizing assembly 4.
The adjustable height of the magnetic powder flusher 5, wherein being equipped with black magnetic powder Fe3O4, pass through leakage field hole and stepping electricity
Dispersed-powder is sprinkling upon on encryption paper by machine transverse movement.
The image pick-up card 6 uses analog acquisition card.By CCD camera 2 and the master control that image pick-up card 6 is housed
Computer 7 is connected, and constitutes the hardware environment of Image Acquisition.
There is the main control computer 7 PC control interface to be convenient for human-machine operation, by serial communication modular to making
Instruction is sent for the LPC2103 of slave computer, driving micro-step motor progress magnetic powder flusher 5 at the uniform velocity moves and rotary flat
Platform 3 rotates.
The beneficial effects of the utility model：
The utility model is directed to the encryption paper based on magnetic fibre, can not be distinguished from the appearance due to its human eye and
The characteristic that can not be scanned devises the image collecting device.After can carrying out strong magnetic to paper by magnetizing assembly, black is used
Magnetic powder displays the stamp information of storage.Then light source light filling and camera carry out Image Acquisition, facilitate subsequent processing
With discrimination.
Description of the drawings
Fig. 1 is the block diagram of the utility model.
Fig. 2 is the schematic device of the utility model.
Fig. 3 is the work flow diagram of the utility model.
Fig. 4 is the slave computer power supply module circuit diagram of the utility model.
Fig. 5 is the slave computer communication module circuitry figure of the utility model.
Fig. 6 is the stepper motor driving circuit figure of the utility model.
Specific implementation mode
It elaborates below in conjunction with the accompanying drawings to the utility model.
As shown in Figure 1：A kind of image collecting device for the encryption paper based on magnetic fibre includes light source, takes the photograph
As head, rotating platform, magnetizing assembly, magnetic powder flusher, image pick-up card and main control computer etc..Image pick-up card and master control
Computer connection communication, remaining device are controlled by main control computer.
Information inside the described magnetic fibre encryption paper is word, seal or bar code, be in fiber at paper
During insertion enter.Magnetic fibre is by Cell Inner Filling or in-situ compositing by common magnetic material Fe3O4、γ-
Fe2O3、CoFe2O4Made of being added in fiber.
As shown in Figure 2：The light source uses 1 light source of bar-shaped LED suitable for larger square structure measured object, by propping up
Frame is fixedly mounted on the top of rotating platform 3, can form the imaging effect handled most beneficial for subsequent image.
The camera uses the auto iris fixed-focus CCD camera lenses of 600 lines, and rotating platform 3 is fixedly mounted on by holder
Top, to magnetic powder cover after encryption paper carry out Image Acquisition.
The rotating platform 3 is placed among magnetizing assembly, can be rotated by the stepper motor in left side, is had horizontal and vertical
Extra magnetic powder can be poured onto in the recycling box of lower section by straight two transition states, and clamping plate is placed on rotating platform 3 and is come pair
Encryption paper is fixed.
The magnetizing assembly 4 is made of yoke and magnetizing coil.The adjustable height of the magnetic powder flusher and leakage
Magnetic control size.Black magnetic powder Fe is wherein housed3O4, by leakage field hole and stepper motor transverse movement, dispersed-powder is sprinkling upon encryption
Magnetic trace is formed on paper.Magnetic trace is the image for the magnetic powder aggregation that naked eyes can see, and can also be called magnetic particle indications or referred to as aobvious
Show, magnetic particle indications have amplification to width, be actual defects width several times, so Magnetic testing can will visually it is invisible
Pattern-information show.
The image pick-up card 6 uses analog acquisition card.By CCD camera and the master control meter that image pick-up card 6 is housed
Calculation machine 7 is connected, and constitutes the hardware environment of Image Acquisition.
There is the main control computer 7 PC control interface to be convenient for human-machine operation, by serial communication modular to making
Instruction is sent for the LPC2103 of slave computer, driving micro-step motor progress magnetic powder flusher 5 at the uniform velocity moves and rotary flat
Platform 3 rotates.
As shown in Figure 3：The master operation of device has four, is divided into feeding, Qiang Ci, dusts, acquires.
System switching is opened first and is powered, 1 light source working of bar-shaped LED irradiates rotating platform 3 and carries out light filling, by paper
It is put on platform and uses clamping plate reinforcement.
Then the encryption paper being fixed on rotating platform 3 is detected, the magnetizing assembly 4 being made of yoke and magnetizing coil
It is powered and generates magnetic field, strong magnetic treatment is carried out in order to which magnetic powder is adsorbed to encryption paper therein.
Then order is sent out by the PC control interface of main control computer 7, slave computer drives micro-step motor, makes
It obtains magnetic powder flusher and at the uniform velocity sprays black magnetic powder Fe to the encryption paper after strong magnetic3O4, carry out covering and form magnetic trace.Magnetic trace is
Naked eyes it can be seen that magnetic powder aggregation image, have amplification to width, be the several times of actual defects width, can will be visual
Sightless pattern-information is shown.
Micro-step motor in the rotating platform 3 of slave computer driving at this time is rotated to plumbness is at, and is made
It obtains extra magnetic powder to be poured onto in the recycling box of lower section, then rotates and keep in the center again.Finally acquired using CCD camera 2
Image, collects image data and can be sent to main control computer 7 via image pick-up card 6 and carry out storage and follow-up identification
Processing.
As shown in Figure 4：Slave computer LPC2103 passes through dual power supply, i.e. 1.8V core voltages and 3.3V functions peripheral hardware electricity
Pressure.5V power supplys are inputted by transformer or USB power source line, circuit using SPX1117 series LDO chips SPX117M-3.3 and
For SPX1117M-1.8 by voltage stabilization to 3.3V and 1.8V, the resistance of 0 Ω is used for being isolated digital power and analog power, digitally
With simulation ground.
As shown in Figure 5：LPC2103 includes two asynchronous serial ports：UART0 and UART1.Since PC serial ports is RS-232 electricity
Flat, the high level of standard is negative logic, and low level is positive logic, and UART needs SP-232 converters with PC communication modes,
Convert a signal into RS-232 level.The ends PC are connected using DB9 connectors.
As shown in Figure 6：Since stepper motor cannot be directly connected to work on industrial frequency AC or DC power supply, and therefore directly
Using LPC2103, often pin electric current is inadequate, you must use dedicated stepper motor driver chip ULN2003 amplifications electric current
Carry out Driving Stepping Motor.
Claims (8)
1. a kind of image collecting device for the encryption paper based on magnetic fibre, which is characterized in that including,
Rotating platform (3)：It is fixed for paper will to be encrypted；Stepper motor is provided on rotating platform (3), stepper motor drives
Dynamic rotating platform (3) is rotated and turn over；
Light supply apparatus：It is radiated on encryption paper；
Magnetizing assembly (4)：It is mainly made of yoke and magnetizing coil, magnetizing assembly (4), which is powered, generates magnetic field, to rotating platform
(3) the encryption paper on carries out strong magnetic treatment in order to which magnetic powder adsorbs；
Magnetic powder flusher (5)：Top in rotating platform (3) is set, black magnetic is at the uniform velocity sprayed to the encryption paper after strong magnetic
Powder Fe3O4It carries out covering and forms magnetic trace, form magnetic fibre and encrypt paper；
CCD camera (2)：Top in rotating platform (3), the image of acquisition magnetic fibre encryption paper are set；
Image pick-up card (6)：It is connect with the CCD camera (2), receives the image data of its transmission；
Main control computer (7)：Connection described image capture card (6) receives the image data of its acquisition, is stored, for follow-up
Identifying processing.
2. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, it is word, seal or bar code that the magnetic fibre, which encrypts the information inside paper,.
3. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, the light supply apparatus is bar-shaped LED (1) light source, and the top of rotating platform (3) is fixedly mounted on by holder.
4. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, the CCD camera (2) uses the auto iris fixed-focus CCD camera lenses of 600 lines, and rotary flat is fixedly mounted on by holder
The top of platform (3), the encryption paper after being covered to magnetic powder carry out Image Acquisition.
5. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, the rotating platform (3) is placed among magnetizing assembly (4).
6. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, the adjustable height of the magnetic powder flusher (5).
7. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, the image pick-up card (6) uses analog acquisition card, by CCD camera (2) and the master that image pick-up card (6) is housed
Control computer (7) is connected.
8. a kind of image collecting device for the encryption paper based on magnetic fibre according to claim 1, feature
It is, there is the main control computer (7) PC control interface to be convenient for human-machine operation, by serial communication modular to being used as
The LPC2103 of slave computer sends instruction, and driving micro-step motor progress magnetic powder flusher (5) at the uniform velocity moves and rotating platform
(3) it rotates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721325618.0U CN207612324U (en) | 2017-10-13 | 2017-10-13 | A kind of image collecting device for the encryption paper based on magnetic fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721325618.0U CN207612324U (en) | 2017-10-13 | 2017-10-13 | A kind of image collecting device for the encryption paper based on magnetic fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207612324U true CN207612324U (en) | 2018-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721325618.0U Expired - Fee Related CN207612324U (en) | 2017-10-13 | 2017-10-13 | A kind of image collecting device for the encryption paper based on magnetic fibre |
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| CN (1) | CN207612324U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807339A (en) * | 2017-10-13 | 2018-03-16 | 陕西科技大学 | For encryption paper image harvester and its application method based on magnetic fibre |
-
2017
- 2017-10-13 CN CN201721325618.0U patent/CN207612324U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107807339A (en) * | 2017-10-13 | 2018-03-16 | 陕西科技大学 | For encryption paper image harvester and its application method based on magnetic fibre |
| CN107807339B (en) * | 2017-10-13 | 2021-02-19 | 陕西科技大学 | Encrypted paper image acquisition device based on magnetic fibers and using method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180713 Termination date: 20201013 |