CN206341307U - Micro-imaging autofocus system based on FPGA and NIOS II - Google Patents
Micro-imaging autofocus system based on FPGA and NIOS II Download PDFInfo
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- CN206341307U CN206341307U CN201621363117.7U CN201621363117U CN206341307U CN 206341307 U CN206341307 U CN 206341307U CN 201621363117 U CN201621363117 U CN 201621363117U CN 206341307 U CN206341307 U CN 206341307U
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- auto
- focusing
- fpga
- nios
- imaging
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Abstract
The utility model discloses a kind of micro-imaging autofocus system based on FPGA and NIOS II, micro-imaging autofocus system based on FPGA and NIOS II, view data is stored in synchronous DRAM, internal insertion computing device auto-focusing algorithm routine is handled view data, and control servomotor to move by servo controller according to result, servomotor drives optical lens motion, so that being located at by the image of camera lens imaging on CCD photosurface, thus obtain clearly image, the view data being stored in SDRAM is converted into image under FPGA controls and shown by the LCD display in system, by display screen it is observed that autofocus system realizes image by obscuring clearly change procedure, the system focusing time is fast, it can be achieved to focus for 0.3 0.8 seconds（50 times of object lens）, high precision of focusing（± 1/3 depth of field）, focusing stabilization.
Description
Technical field
The utility model is related to Autofocus Technology field, more particularly to a kind of micro-imaging based on FPGA and NIOS II
Autofocus system.
Background technology
Auto-focusing（Auto Focus）It is the principle reflected using object light, by the light of reflection by the sensor on camera
CCD receives, and by computer disposal, the mode that driving electric focusing mechanism is focused is auto-focusing, Autofocus Technology
Various imaging systems are more and more applied to, and apply the automatic autofocus system on microscope seldom, it is existing
It is long that micro- autofocus system has a focusing time, low precision of focusing, the problems such as focusing unstable.
The content of the invention
In order to overcome drawbacks described above, it is automatically right that the utility model provides a kind of micro-imaging based on FPGA and NIOS II
Burnt system.
The utility model is to solve the technical scheme that its technical problem is used：It is a kind of based on FPGA's and NIOS II
Micro-imaging autofocus system, including graticle, imaging sensor, optical lens, CCD camera, auto-focusing controller, with
And message handler, the graticle is provided with encoder, and the encoder feeds back to signal on auto-focusing controller
I/O sensors on, and signal is received by auto-focusing controller, the graticle is imaged on cmos image by optical lens
On the photosurface of sensor, and the I/O sensors that initial information is sent on auto-focusing controller are entered by imaging sensor
Row is received, and the CCD camera inputs image information to auto-focusing controller after being imaged by optical lens, described automatic right
At the signal output connection capture card and display screen of burnt controller, the pci bus mouthful link information of auto-focusing controller
Device is managed, the control system of the auto-focusing controller is the control system based on FPGA and NIOS II
As further improvement of the utility model, a servomotor and a servo controller, the servo electricity are additionally provided with
Machine drives optical lens motion, servo controller control servomotor motion, the auto-focusing controller output control information
To servo controller.
The beneficial effects of the utility model are：The utility model is the micro-imaging auto-focusing based on FPGA and NIOS II
System, view data is stored in synchronous DRAM, internal insertion computing device auto-focusing algorithm journey
Ordered pair view data is handled, and controls servomotor to move by servo controller according to result, servomotor band
Dynamic optical lens motion so that be located at by the image of camera lens imaging on CCD photosurface, thus obtain clearly image,
The view data being stored in SDRAM is converted into image under FPGA controls and shown by the LCD display in system, is passed through
Display screen is observed that autofocus system realizes image by obscuring clearly change procedure, and the system focusing time is fast,
It can be achieved to focus for 0.3-0.8 seconds（50 times of object lens）, high precision of focusing（± 1/3 depth of field）, focusing stabilization.
Brief description of the drawings
Fig. 1 is the utility model structural principle block diagram；
Indicated in figure：1- graticles；2- imaging sensors；3- optical lens；4- CCD cameras；5- servomotors；6- is watched
Take controller；7- auto-focusing controllers；8- message handlers；9- encoders；10-I/O sensors；11- capture cards；12- shows
Display screen curtain；13-PCI buses mouthful.
Embodiment
In order to deepen to understand of the present utility model, further is made to the utility model below in conjunction with embodiment and accompanying drawing
It is described in detail, the embodiment is only used for explaining the utility model, does not constitute the restriction to the utility model protection domain.
One kind that Fig. 1 illustrates a kind of micro-imaging autofocus system based on FPGA and NIOS II of the utility model is real
Apply at mode, including graticle 1, imaging sensor 2, optical lens 3, CCD camera 4, auto-focusing controller 7 and information
Device 8 is managed, the graticle 1 is provided with encoder 9, the I/ that the encoder 9 feeds back to signal on auto-focusing controller 7
On O sensors 10, and signal is received by auto-focusing controller 7, the graticle 1 is imaged on image by optical lens 3 and passed
On the photosurface of sensor 2, and initial information is sent to by imaging sensor 2 the I/O sensors 10 on auto-focusing controller 7
Received, the CCD camera 4 inputs image information to auto-focusing controller 7 after being imaged by optical lens 3, described
The signal output connection capture card 11 and display screen 12 of auto-focusing controller 7, the pci bus of auto-focusing controller 7
13 link information processors 8 of mouth, the control system of the auto-focusing controller 7 is the control system based on FPGA and NIOS II
System.A servomotor 5 and a servo controller 6 are additionally provided with, the servomotor 5 drives optical lens 3 to move, servo controller
6 control servomotors 5 are moved, the output control information of auto-focusing controller 7 to servo controller 6.
In such a system, FPGA controls liquid crystal display and imaging sensor work to obtain view data, then image
Data storage is in synchronous DRAM, the insertion computing device auto-focusing algorithm routines of NIOS II inside FPGA
View data is handled, and controls servomotor to move by servo controller according to result, servomotor drives
Optical lens is moved so that is located at by the image of camera lens imaging on CCD photosurface, thus is obtained clearly image systems
The view data being stored in SDRAM is converted into image under FPGA controls and shown by the LCD display in system, by aobvious
Display screen is observed that autofocus system realizes image by obscuring clearly change procedure.
IMAQ, storage and display realization be built upon graticle, optical lens, CMOS imaging sensors,
On the hardware foundation that FPGA, SDRAM and LCD display are constituted.Graticle is imaged on cmos image by optical lens
On the photosurface of sensor, the output image data conversion storage of imaging sensor is read into SDRAM, then from SDRAM by FPGA
Go out view data and send LCD display to, the image that finally image sensor is generated on LCD display, image is adopted
Certain hardware foundation has been established in collection, storage and the realization for being designed as auto-focusing of display system.Due to view data
It is stored in SDRAM, at this moment, embeded processor NIOS II reads these data by configuration processor first, then calls certainly
Dynamic focusing evaluation function program and search by hill climbing program.On the result obtained in program operation process, with reference to FPGA with watching
The motion of motor driver Interface Controller servomotor is taken, drives microscope constantly to move forward and backward so that imaging is located at image sensing
On the photosurface of device.
Claims (2)
1. a kind of micro-imaging autofocus system based on FPGA and NIOS II, it is characterised in that：Including graticle (1), figure
As sensor (2), optical lens (3), CCD camera (4), auto-focusing controller (7) and message handler (8), described point
Draw plate (1) and be provided with encoder (9), the I/O that the encoder (9) feeds back to signal on auto-focusing controller (7) is passed
On sensor (10), and signal is received by auto-focusing controller (7), the graticle (1) is imaged on figure by optical lens (3)
On the photosurface of picture sensor (2), and initial information is sent on auto-focusing controller (7) by imaging sensor (2)
I/O sensors (10) are received, and the CCD camera (4) inputs image information to automatic after being imaged by optical lens (3)
Focusing controller (7), the signal output connection capture card (11) and display screen (12) of the auto-focusing controller (7),
Pci bus mouthful (13) link information processor (8) of auto-focusing controller (7), the control of the auto-focusing controller (7)
System is the control system based on FPGA and NIOS II.
2. the micro-imaging autofocus system according to claim 1 based on FPGA and NIOS II, it is characterised in that：Also
Provided with a servomotor (5) and a servo controller (6), the servomotor (5) drives optical lens (3) motion, servo control
Device (6) control servomotor (5) motion processed, auto-focusing controller (7) the output control information to servo controller (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621363117.7U CN206341307U (en) | 2016-12-13 | 2016-12-13 | Micro-imaging autofocus system based on FPGA and NIOS II |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621363117.7U CN206341307U (en) | 2016-12-13 | 2016-12-13 | Micro-imaging autofocus system based on FPGA and NIOS II |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206341307U true CN206341307U (en) | 2017-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621363117.7U Expired - Fee Related CN206341307U (en) | 2016-12-13 | 2016-12-13 | Micro-imaging autofocus system based on FPGA and NIOS II |
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| Country | Link |
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| CN (1) | CN206341307U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488138A (en) * | 2016-12-13 | 2017-03-08 | 苏州坤镥光电科技有限公司 | Micro-imaging autofocus system based on FPGA and NIOS II |
-
2016
- 2016-12-13 CN CN201621363117.7U patent/CN206341307U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106488138A (en) * | 2016-12-13 | 2017-03-08 | 苏州坤镥光电科技有限公司 | Micro-imaging autofocus system based on FPGA and NIOS II |
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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: 20170718 Termination date: 20211213 |