CN105403313A - Infrared area-array scanning imaging system and control method thereof - Google Patents
Infrared area-array scanning imaging system and control method thereof Download PDFInfo
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- CN105403313A CN105403313A CN201510880688.1A CN201510880688A CN105403313A CN 105403313 A CN105403313 A CN 105403313A CN 201510880688 A CN201510880688 A CN 201510880688A CN 105403313 A CN105403313 A CN 105403313A
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- scan module
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- 238000003384 imaging method Methods 0.000 title claims abstract description 22
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000003287 optical effect Effects 0.000 claims abstract description 31
- 230000033001 locomotion Effects 0.000 claims abstract description 16
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 238000010408 sweeping Methods 0.000 claims description 10
- 230000011664 signaling Effects 0.000 claims description 8
- 230000008054 signal transmission Effects 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
- G01J5/00—Radiation pyrometry, e.g. infrared or optical thermometry
- G01J5/02—Constructional details
- G01J5/026—Control of working procedures of a pyrometer, other than calibration; Bandwidth calculation; Gain control
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
- Radiation Pyrometers (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention relates to an infrared area-array scanning imaging system and a control method thereof. The scanning system is composed of an area-array detector, a rotary table, and a scanning mechanism. The scanning mechanism includes a scanning motor, an optical lens, and a drive module; the scanning mechanism and the area-array detector are installed on the rotary table; and the scanning mechanism is arranged in front of a focal plane of the area-array detector. The scanning mechanism is driven by the rotary table to make circular-scanning motion and collects a position pulse signal of the rotary table, and the speed of the rotary table is calculated; according to integral time of the area-array detector, calculation is carried out to obtain a rotation speed and scanning linear zone time of the scanning motor; on the basis of an obtained control parameter, the rotating speed of the scanning motor is changed in real time; and then an obtained position signal of the scanning motor and a generated corresponding scanning zone time signal are transmitted to a detector together to output an image. According to the invention, a scanning speed is compensated by using a rotating speed of the rotary table and an integral sequence of the detector, thereby realizing clear imaging during a rapid scanning process.
Description
Technical field
The present invention relates to infrared surface battle array scanning imaging system and control method thereof, belong to the technical field that scanning mechanism controls.
Background technology
In all-directional infrared Search/Track warning system, thermal infrared imager many employings linear array detector, coordinates optical mechaical scanning mechanism, realizes the scanning imagery of 360 °.Infrared eye many employings linear array detector in abroad of infrared search warning system, possesses comprehensive scanning imagery function, its sweep velocity needs and detector integrates time, signal simultaneously match readout time, to possess following function, then needs to add planar array detector in addition.Because planar array detector can produce relative motion between focal plane and scenery within integral time, if carry out velocity compensation not in time, with regard to easily causing detector image-forming that fuzzy problem occurs, cause the decline of image quality.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, propose infrared surface battle array scanning imaging system and control method thereof, solve due to can relative motion be produced between focal plane and scenery within the detector integrates time, cause detector output image that fuzzy problem occurs.
The present invention is achieved by following scheme:
1. infrared surface battle array scanning imaging system, is characterized in that, this system comprises scanning mechanism, planar array detector and turntable, and described scanning mechanism is made up of scan module, optical mirror slip and driver module; Scanning mechanism and planar array detector are arranged on turntable, before scanning mechanism is arranged on planar array detector focal plane; Also be provided with scanning monitor in scanning mechanism, this scanning monitor is joint face array detector, turntable and driver module respectively, and wherein, driver module drives scan module to drive optical mirror slip motion;
Scanning monitor, for gathering the position pulse signal of turntable, calculates the rotating speed v of turntable
0, according to obtain planar array detector integral time T size, calculate the rotating speed v of scan module
1with scanning linearity district time T
1.
Further, scanning monitor and all carry out Signal transmissions by low-voltage differential signal (LVDS) transmission mode between planar array detector and turntable; SPI serial communication mode signal transmission is adopted between scanning monitor and driver module.
Further, the rotating speed v of described scan module
1(°/ms) be:
θ
0＝v
0×T
Wherein, θ
0for the movement angle of turntable; v
0(°/ms) for the week of turntable sweeping speed; T (ms) is the detector integrates time; θ
1for after optical system compression, scanning mechanism needs backwards rotation angle; N is optical system ratio of compression.
Further, described scanning linearity district time T
1be greater than T integral time of planar array detector.
2., based on the infrared surface battle array scan control method of infrared surface battle array scanning imaging system, step is as follows:
After step 1. scanning mechanism powers on, scan module carries out small change work, and by motor-locking at optical null place;
After step 2. scanning mechanism completes and powers on, start infrared surface battle array scanning imaging system, turntable rotates and drives scanning mechanism to carry out week sweeping motion, and scanning mechanism gathers the position pulse signal of turntable, calculates the speed v of turntable
0, according to planar array detector integral time T size, calculate the rotating speed v of scan module
1with scanning linearity district time T
1;
Step 3. scanning mechanism obtains the position signalling of scan module and and the scanning district time signal T that produces according to this position signalling
2be transferred to detector together as external synchronization signal, detector is according to the external synchronization signal output image received.
Further, the rotating speed expression formula v of the scan module described in step 3
1(°/ms) be:
θ
0＝v
0×T
Wherein, θ
0for the movement angle of turntable; v
0(°/ms) for the week of turntable sweeping speed; T (ms) is the detector integrates time; θ
1for after optical system compression, scanning mechanism needs backwards rotation angle; N is optical system ratio of compression.
Further, the scanning linearity district time T of the scan module described in step 3
1be greater than T integral time of planar array detector.
Further, step 1 is when scan module carries out small change work, and the scanning machinery angular range of scan module is-12.5 ° ~+12.5 °, and the optical angle scope of corresponding optical mirror slip is-25 ° ~+25 °.
The present invention's beneficial effect is compared to the prior art:
In prior art, because infrared surface battle array imaging system is when carrying out sweeping in week, when the rotating speed of turntable is increased to a certain degree, because planar array detector can produce relative motion between focal plane and scenery within integral time, the image that detector is collected occurs fuzzy, reduces picture quality.The present invention proposes a kind of infrared surface battle array scan control method, and devise a set of infrared surface battle array scanning imaging system.The present invention is by gathering the speed of turntable, and the integration sequence of mating surface array detector, calculates rotating speed and the scanning linearity district time of scan module.Thus drive scan module to produce relative motion, and according to the position signalling of scan module, produce corresponding scanning property district's time signal and be transferred to detector and make its output image.When the present invention utilizes the rotating speed of turntable and detector integrates, ordered pair sweep velocity compensates, and realizes the blur-free imaging in rapid scanning process.
Accompanying drawing explanation
Fig. 1 is the object construction schematic diagram of the embodiment of the present invention;
Fig. 2 is the scanning mechanism schematic diagram of the embodiment of the present invention;
Fig. 3 is the scanning mechanism Control timing sequence figure of the embodiment of the present invention;
Fig. 4 is the scanning mechanism control flow chart of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention will be further described in detail.
The present invention proposes a kind of infrared surface battle array scanning imaging system, this system comprises: planar array detector, turntable and scanning mechanism, and scanning mechanism is made up of driver module, scan module and optical mirror slip; Wherein, scanning mechanism and planar array detector are arranged on turntable, before scanning mechanism is arranged on planar array detector focal plane, make external scene light at the uniform velocity pass through focal plane.
The collection that scanning monitor realizes signal is also provided with in scanning mechanism, transmission and process, the scanning monitor adopted in the present embodiment is CPLD module, CPLD module and adopt LVDS signal mode to carry out data transmission between planar array detector and turntable, carries out Signal transmissions by SPI communication modes between CPLD module and driver module; Driver module drives scan module to drive optical mirror slip motion.
Planar array detector in the present embodiment adopts corrugated battle array gazing type infrared eye in 640 × 512, and bin size is 25um, and the typical integration time is 3ms.
Scan module in the present embodiment selects finite angle voice coil motor, has response time and higher positional precision faster.
Optical mirror slip in the present embodiment adopts the optical mirror slip of silicon carbide substrate, surface gold-plating, effectively ensure that the surface figure accuracy of higher dynamic and static state and medium wave is reached to the reflectivity requirements of more than 90%.
The model of the able to programme extensive logical device (CPLD) adopted in the present embodiment is EPM7128STI100, as process core devices, there is the feature such as high impedance, electric erasable, wherein, available gate cell is 2500, and between pin, maximum-delay is 5ns.
The invention allows for a kind of scan control method of infrared surface battle array scanning imaging system, step is as follows:
Step (one), arrange scan module scanning machinery angular range be-12.5 ° ~+12.5 °, the optical angle scope of corresponding optical mirror slip is-25 ° ~+25 °.After infrared surface battle array scanning imaging system powers on, scan module is under the control of driver module, and scan module carries out small change work by self-inspection, and by motor-locking at optical null place.
Step (two), complete small change work after, start infrared surface battle array scanning imaging system, turntable rotates and drives scanning mechanism to carry out week sweeping motion, under the effect of driving circuit, scan module drives optical mirror slip, moves back and forth according to the track while scan of setting.
Open timer, setting timing is 1ms, when reaching timing, and the CPLD module acquires revolving table position pulse signal in scanning mechanism, and calculate the rotating speed v of turntable
0, and according to the detector integrates time T obtained, calculate the rotating speed v of scan module
1, and the scanning linearity district time T of scan module
1, concrete mode is as follows:
(1) the rotating speed v of scan module
1:
First, the movement angle of turntable is:
θ
0＝v
0×T
Wherein, the week speed of sweeping of turntable is v
0(°/ms), the detector integrates time is T (ms)
Then, after optical system compression, scanning mechanism needs backwards rotation angle to be:
Wherein, optical system ratio of compression is N.
Finally, the rotary speed calculating scan module is v
1(°/ms):
(2) the scanning linearity district time T of scan module
1:
Because the rotating speed of scan module is relevant with sweeping speed the week of turntable, and have nothing to do with the integral time of detector, when the detector integrates time changes, as long as ensure that the scanning linearity district time is greater than the detector integrates time.
Step (three), optical mirror slip are according to the rotating speed v of scan module
1move, the position signalling of CPLD module acquires scan module, and according to the scanning linearity district time signal T that this position signalling obtains
2, by the position signalling of scan module and scanning linearity district time signal T
2be transferred to the image-forming module of detector in the lump as external synchronization signal, planar array detector completes image according to this external synchronization signal and exports.
What the scanning monitor in the present embodiment was selected is programmable logic device (CPLD), mainly considers that it has the feature such as high impedance, electric erasable.As other embodiments, the controller component of other kinds can be chosen equally, as FPGA etc.
Under the thinking that the present invention provides; the mode easily expected to those skilled in the art is adopted to convert the technological means in above-described embodiment, replace, revise; and the effect played goal of the invention that is substantially identical with the relevant art means in the present invention, that realize is also substantially identical; the technical scheme of such formation is carried out fine setting to above-described embodiment and is formed, and this technical scheme still falls within the scope of protection of the present invention.
Claims (8)
1. infrared surface battle array scanning imaging system, is characterized in that, this system comprises scanning mechanism, planar array detector and turntable, and described scanning mechanism is made up of scan module, optical mirror slip and driver module; Scanning mechanism and planar array detector are arranged on turntable, before scanning mechanism is arranged on planar array detector focal plane; Also be provided with scanning monitor in scanning mechanism, this scanning monitor is joint face array detector, turntable and driver module respectively, and wherein, driver module drives scan module to drive optical mirror slip motion;
Scanning monitor, for gathering the position pulse signal of turntable, calculates the rotating speed v of turntable
0, according to obtain planar array detector integral time T size, calculate the rotating speed v of scan module
1with scanning linearity district time T
1.
2. infrared surface battle array scanning imaging system according to claim 1, is characterized in that, scanning monitor and all carry out Signal transmissions by low-voltage differential signal (LVDS) transmission mode between planar array detector and turntable; SPI serial communication mode signal transmission is adopted between scanning monitor and driver module.
3. infrared surface battle array scanning imaging system according to claim 1, is characterized in that, the rotating speed v of described scan module
1(°/ms) be:
θ
0＝v
0×T
Wherein, θ
0for the movement angle of turntable; v
0(°/ms) for the week of turntable sweeping speed; T (ms) is the detector integrates time; θ
1for after optical system compression, scanning mechanism needs backwards rotation angle; N is optical system ratio of compression.
4. infrared surface battle array scanning imaging system according to claim 1, is characterized in that, described scanning linearity district time T
1be greater than T integral time of planar array detector.
5., based on the infrared surface battle array scan control method of infrared surface battle array scanning imaging system according to claim 1, it is characterized in that, step is as follows:
After step 1. scanning mechanism powers on, scan module carries out small change work, and by motor-locking at optical null place;
After step 2. scanning mechanism completes and powers on, start infrared surface battle array scanning imaging system, turntable rotates and drives scanning mechanism to carry out week sweeping motion, and scanning mechanism gathers the position pulse signal of turntable, calculates the speed v of turntable
0, according to planar array detector integral time T size, calculate the rotating speed v of scan module
1with scanning linearity district time T
1;
Step 3. scanning mechanism obtains the position signalling of scan module and and the scanning district time signal T that produces according to this position signalling
2be transferred to detector together as external synchronization signal, detector is according to the external synchronization signal output image received.
6. infrared surface battle array scan control method according to claim 5, is characterized in that, the rotating speed expression formula v of the scan module described in step 3
1(°/ms) be:
θ
0＝v
0×T
Wherein, θ
0for the movement angle of turntable; v
0(°/ms) for the week of turntable sweeping speed; T (ms) is the detector integrates time; θ
1for after optical system compression, scanning mechanism needs backwards rotation angle; N is optical system ratio of compression.
7. infrared surface battle array scan control method according to claim 5, is characterized in that, the scanning linearity district time T of the scan module described in step 3
1be greater than T integral time of planar array detector.
8. infrared surface battle array scan control method according to claim 5, it is characterized in that, step 1 is when scan module carries out small change work, and the scanning machinery angular range of scan module is-12.5 ° ~+12.5 °, and the optical angle scope of corresponding optical mirror slip is-25 ° ~+25 °.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510880688.1A CN105403313A (en) | 2015-12-05 | 2015-12-05 | Infrared area-array scanning imaging system and control method thereof |
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|---|---|---|---|
| CN201510880688.1A CN105403313A (en) | 2015-12-05 | 2015-12-05 | Infrared area-array scanning imaging system and control method thereof |
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| CN105403313A true CN105403313A (en) | 2016-03-16 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060146A (en) * | 2018-06-28 | 2018-12-21 | 湖北久之洋红外***股份有限公司 | A kind of scanning galvanometer control system for the infrared wide area imaging of face battle array |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321302A (en) * | 2008-07-08 | 2008-12-10 | 浙江大学 | Three-dimensional real-time acquisition system based on camera array |
| CN201653553U (en) * | 2010-01-06 | 2010-11-24 | 中国电子科技集团公司第十一研究所 | Infrared panoramic imaging device |
| US20100321752A1 (en) * | 2005-10-01 | 2010-12-23 | Carl Zeiss Microimaging Gmbh | Method for correcting a control of an optical scanner and the optical scanner |
| WO2012002893A1 (en) * | 2010-06-30 | 2012-01-05 | Ge Healthcare Bio-Sciences Corp | A system for synchronization in a line scanning imaging microscope |
| CN102354053A (en) * | 2011-10-31 | 2012-02-15 | 四川九洲电器集团有限责任公司 | Flyback optical system and method for eliminating image blurring |
| CN104539829A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Optical-mechanical structure based on infrared area array detector scanning imaging |
-
2015
- 2015-12-05 CN CN201510880688.1A patent/CN105403313A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100321752A1 (en) * | 2005-10-01 | 2010-12-23 | Carl Zeiss Microimaging Gmbh | Method for correcting a control of an optical scanner and the optical scanner |
| CN101321302A (en) * | 2008-07-08 | 2008-12-10 | 浙江大学 | Three-dimensional real-time acquisition system based on camera array |
| CN201653553U (en) * | 2010-01-06 | 2010-11-24 | 中国电子科技集团公司第十一研究所 | Infrared panoramic imaging device |
| WO2012002893A1 (en) * | 2010-06-30 | 2012-01-05 | Ge Healthcare Bio-Sciences Corp | A system for synchronization in a line scanning imaging microscope |
| CN102354053A (en) * | 2011-10-31 | 2012-02-15 | 四川九洲电器集团有限责任公司 | Flyback optical system and method for eliminating image blurring |
| CN104539829A (en) * | 2014-12-09 | 2015-04-22 | 中国科学院上海技术物理研究所 | Optical-mechanical structure based on infrared area array detector scanning imaging |
Non-Patent Citations (1)
| Title |
|---|
| 朱保安 等: "《转台自动控制仪设计》", 《电子测试》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109060146A (en) * | 2018-06-28 | 2018-12-21 | 湖北久之洋红外***股份有限公司 | A kind of scanning galvanometer control system for the infrared wide area imaging of face battle array |
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Application publication date: 20160316 |