CN202092660U - Scenery simulator applicable to TDI (Transport Driver Interface) camera - Google Patents
Scenery simulator applicable to TDI (Transport Driver Interface) camera Download PDFInfo
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- CN202092660U CN202092660U CN2011202112130U CN201120211213U CN202092660U CN 202092660 U CN202092660 U CN 202092660U CN 2011202112130 U CN2011202112130 U CN 2011202112130U CN 201120211213 U CN201120211213 U CN 201120211213U CN 202092660 U CN202092660 U CN 202092660U
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Abstract
The utility model relates to a scenery simulator applicable to a TDI camera, which comprises a lens, a collimator tube, a roller, a light source and a roller controller, wherein the collimator tube is arranged between the lens and the roller; the lens is a matched lens of the TDI camera and is arranged at the output end of the collimator tube; the lens, the collimator tube and the light source are on the same optical axis; a central axis of the roller is vertical to the optical axis and connected with the roller controller; an euphotic belt is annularly arranged on the lateral surface of the roller around the central axis of the roller; a target to be imaged is adhered onto the euphotic belt; and the light source is arranged in the roller and faces towards the input end of the collimator tube through the euphotic belt. The scenery simulator can realize the object imaging function of the TDI camera, meets the requirements of dynamic imaging performance of the TDI camera for precise testing, and has the advantages of simple structure and low cost.
Description
Technical field
The utility model relates to a kind of object simulation device, particularly a kind ofly is applied to the object simulation device that the airborne remote sensing field is applicable to the TDI camera.
Background technology
When utilizing aerial remote sens ing technique to carry out ground detection, need in advance camera accurately to be detected.TDI (Time Delay Integration, time delay integration) camera is owing to have the high sensitivity characteristic, obtain application more and more widely in the airborne remote sensing field, the TDI camera is a kind of line-scan digital camera, compare with common line-scan digital camera, because it has adopted multirow TDI pattern to expose, and makes the common linear array aerial camera of its remolding sensitivity much higher.Exactly because but also this TDI pattern, make its use sequential require than common linear array aerial camera strictness many.Concerning common linear array aerial camera, when its line frequency and fast height ratio did not match, just image had corresponding compression on ratio, but concerning the TDI camera, unmatched consequence is that picture quality seriously descends, and resolution reduces greatly.Concerning 96 grades of TDI cameras, if departing from desirable line frequency, its line frequency surpasses 1%, it pushes away sweeps directional image resolution and may be reduced to 1/96 of former resolution.
Existing camera detection method normally adopt parallel light tube and can the geocyclic high precision turntable of emulation etc. price costliness and environmental baseline require harsh optical detection apparatus to build to produce the simulation scenery of relative motion, in case detecting on-the-spot condition is restricted, just can't implement to detect, so there is the problem of building complexity, performance difficulty.Produced thus and a kind ofly swept camera and implement to detect pushing away, the object simulation device of specific (special) requirements is not arranged again to detecting the scene, as the patent No. is 201020115860.7, the patentee is an Xian Inst. of Optics and Precision Mechanics, Chinese Academy of Sciences, name is called and is applicable to dynamically to push away and sweeps and the utility model patent of the infinite distance object scene simulator of quiescent imaging camera, this object simulation device comprises optical lens, mobile reticule assembly and light source, mobile reticule assembly is arranged between optical lens and the light source, light source and optical lens are on same optical axis, mobile reticule assembly comprises translation stage and graticule, it is at the uniform velocity mobile according to certain speed that translation stage drives graticule, simulate the at the uniform velocity mobile of infinite distance target, this moving target promptly can be used as the simulation scenery that pushes away when sweeping the phase machine testing, this object simulation device at only be the common detection of sweeping camera that pushes away.Because graticule is done rectilinear motion along the focal plane of optical lens, can influence the camera test performance if be slightly offset then, can't satisfy the dynamic imaging performance demands of the highly sensitive TDI camera of accurate test, the special-purpose object simulation device of the high synchronization accuracy of therefore essential development.
The utility model content
The utility model at the object simulation device of existing employing parallel light tube and high precision turntable cost an arm and a leg, performance difficulty, and the object simulation device that adopts mobile reticule assembly can't satisfy the problem of the dynamic imaging performance demands of the highly sensitive TDI camera of accurate test, a kind of novel object simulation device that is applicable to the TDI camera is provided, can realize of the imaging of TDI camera to object, satisfy the accurately dynamic imaging performance demands of test TDI camera, have advantage simple in structure, with low cost simultaneously.
The technical solution of the utility model is as follows:
A kind of object simulation device that is applicable to the TDI camera, it is characterized in that, comprise camera lens, parallel light tube, cylinder, light source and cylinder controller, described parallel light tube is arranged between camera lens and the cylinder, described camera lens is the supporting camera lens of TDI camera, described camera lens is arranged at the output terminal of parallel light tube, camera lens, parallel light tube and light source are on same optical axis, the central shaft of cylinder and central shaft vertical with optical axis links to each other with the cylinder controller, on the cylinder side surface, be provided with euphotic zone around the drum central axis annular, post the target for the treatment of imaging on the described euphotic zone, it is inner and by the input end of euphotic zone towards parallel light tube that described light source is arranged at cylinder.
The central shaft of described cylinder is outside by fixing tube-shaped shaft of bearing socket, and described light source is arranged on the tube-shaped shaft.
Described cylinder is horizontally disposed with or vertically is provided with.
Described euphotic zone is that organic glass or plastic material are made.
Described light source is annular LED source, and described light-source brightness is adjustable.
Described cylinder controller comprises control motor and CPLD, and described control motor links to each other with the central shaft of cylinder.
Described cylinder controller also comprises single-chip microcomputer, and described single-chip microcomputer links to each other with CPLD.
Technique effect of the present utility model is as follows:
The object simulation device that the utility model relates to, comprise camera lens, parallel light tube, cylinder, light source and cylinder controller, adopt parallel light tube as main light transform component, TDI camera and the supporting camera lens of TDI camera are fixed in the output terminal of parallel light tube, owing to treat that the target of imaging is affixed on the euphotic zone of cylinder, it is inner and by the input end of euphotic zone towards parallel light tube that light source is arranged at cylinder, so treat that the target of imaging scans by the input end of parallel light tube and in the focal plane of parallel light tube, export camera lens to through parallel light tube, thereby at the TDI camera imaging, realized that the TDI camera is treated as the imaging of picture target, cylinder rotates around central shaft under the effect of cylinder controller, treat the target movement therewith of imaging, realize the dynamic imaging of TDI camera to object, so can satisfy the highly sensitive TDI camera of accurate test dynamic imaging performance demands, the object simulation device that has solved the mobile reticule assembly of existing employing only can be swept camera and tests pushing away, can't satisfy the problem of dynamic imaging performance demands of the TDI camera of accurate test high sensitivity, and need not to be provided with expensive can the geocyclic high precision turntable of emulation, reduced cost, and it is simple in structure, easy to assembly.
Description of drawings
Fig. 1 is the plan structure synoptic diagram of the utility model object simulation device embodiment one.
Fig. 2 is the main TV structure synoptic diagram of the utility model object simulation device embodiment one.
Fig. 3 is the perspective view of the utility model object simulation device embodiment two.
Fig. 4 is CPLD and the single-chip microcomputer associated working schematic diagram in the cylinder controller.
Each label lists as follows among the figure:
1-TDI camera target surface; The 2-camera lens; The 3-parallel light tube; The 4-cylinder; The 5-euphotic zone; The 6-light source; 7-cylinder controller.
Embodiment
Below in conjunction with accompanying drawing the utility model is described.
Fig. 1 and Fig. 2 are respectively overlooking of the utility model object simulation device embodiment one and main TV structure synoptic diagram, this object simulation device comprises camera lens 2, parallel light tube 3, cylinder 4, light source 6 and cylinder controller 7, cylinder controller 7 comprises control motor, CPLD (Complex Programmable Logic Device, CPLD) and the single-chip microcomputer that connects successively.Parallel light tube 3 is arranged between camera lens 2 and the cylinder 4, camera lens 2 is arranged at the output terminal of parallel light tube 3, camera lens 2, parallel light tube 3 and light source 6 are on same optical axis, the central shaft of cylinder 4 and its central shaft vertical with optical axis links to each other with the control motor, central shaft annular around cylinder 4 on cylinder 4 side surfaces is provided with euphotic zone 5, on euphotic zone 5, post treat imaging object as target, this target can be distributed in the inboard or the outside of the euphotic zone 5 on the cylinder 4, in order to strengthen the contrast of imaging object, do not adopt the reflection source mode, and the mode of delivery of employing cylinder 4 built-in light sources 6, promptly form cylinder 4 inner modes of giving light, it is inner also by the input end of euphotic zone 5 towards parallel light tube 3 that light source 6 is arranged at cylinder 4.
Object simulation device embodiment one illustrated in figures 1 and 2 is the cylinder 4 that vertically is provided with, and cylinder 4 can also be horizontally disposed with, the perspective view of object simulation device embodiment two as shown in Figure 3.The processing of cylinder 4 can be divided into two parts, and the central shaft of a part is connected with the control motor with axle sleeve, as rotating drive, the central shaft of another part outside with one in the tube-shaped shaft of sky pass through the bearing socket, these two parts link into an integrated entity by four plastic rods.Light source 6 is arranged on the tube-shaped shaft, light source 6 is preferably annular LED source, and light-source brightness is adjustable, and light source 6 inserts cylinder 4 inside by tube-shaped shaft, light source 6 and tube-shaped shaft do not rotate with cylinder 4 in the rotation process of cylinder 4, and the light of light source 6 is the direction of directive parallel light tube 3 all the time.The part that cylinder connects by four plastic rods can be provided with organic glass or plastic material etc. and be made into euphotic zone 5.
The related object simulation device of the utility model is applicable to the TDI camera, and as selecting TDI CCD remote sensing camera, camera lens 2 is the supporting camera lens of TDI camera, and TDI camera and supporting camera lens 2 are fixed in the output terminal of parallel light tube 3.Parallel light tube 3 is as main light mapping device, the focal length of parallel light tube 3 has just determined the enlargement factor of image, less focal length, the drawdown ratio of image is less, the MTF (Modulation Transfer Function, modulation transfer function) that tests TDI CCD camera carries out the contrast of image and tests the target analysis just needing the line of less spacing right; And bigger focal length, the drawdown ratio of image is bigger, for blur-free imaging, requires also bigger to the diameter of the cylinder 4 that pastes target.The target for the treatment of imaging by parallel light tube 3 input end and scan the finally imaging that realizes object by camera lens 2 and TDI camera target surface 1 in the focal plane position of parallel light tube 3.Cylinder 4 at the uniform velocity rotates around central shaft under the effect of cylinder controller 7, treats that the object of imaging carries out uniform circular motion thereupon, realizes the dynamic imaging of TDI camera to object.
Each device principle of work is to realize the uniform rotation of cylinder 4 by the feedback control system of control motor speed in the cylinder controller 7, adopt encoders monitor control rotating speed of motor, on the euphotic zone 5 of cylinder 4, stamp lines and form optical code disk by the equipotential mode, 4 rotations of control motor-driven cylinder, optical code disk rotates synchronously, lines resistance light, space printing opacity between two lines, thereby output pulse number, certain pulse number is as scale-value, and feeds back to TDI camera target surface 1 as code device signal.TDI camera target surface 1 is formed by TDI CCD camera focal plane component, and Fig. 1 left end direction of arrow is row pixel moving direction.Come the capable pixel of synchronous TDI CCD camera to shift by code device signal, the fluctuation of control rotating speed of motor can not influence the sharpness of image, only can influence the shading value between image line and the row, and the control accuracy of therefore controlling the velocity of rotation of motor does not need too high.Can adopt cheaply permanent-magnet DC brush motor as dynamical element for this reason.DC motor speed-regulating can be divided into the single closed-loop drive of speed, current double closed-loop speed governing.Because in the application of panorama project, the control accuracy of control motor requires little, and does not require the motion of control electrical motor gearshift when operate as normal, therefore do not adopt complicated double loop speed-regulating system, and adopt comparatively simple speed monocycle governing system.The simplest implementation method at the monocycle governing system of speed control is the PWM speed governing, promptly recently realizes controlling the speed governing of motor by the duty that changes the PWM ripple, and then the rotating speed of index drum 4.
Fig. 4 is CPLD and single-chip microcomputer associated working schematic diagram in the cylinder controller 7: adopt CPLD that encoder pulse is carried out high-frequency count and converts out the control motor rotation speed; CPLD links to each other with the SPI mouth of single-chip microcomputer, and the real-time velocity of rotation of control motor is passed to single-chip microcomputer; PI controller of single-chip microcomputer indoor design is input with the real-time velocity of rotation of setting rotating speed and control motor, calculates the PWM dutycycle of control motor, and is defeated by CPLD by the SPI oral instructions; CPLD is according to this dutycycle output control corresponding PWM.
The object simulation device that the utility model relates to is mainly used in the imaging of TDI camera and dynamically MTF test.This object simulation utensil has two kinds of imaging patterns: single TDI camera imaging and double T DI camera imaging.Single TDI camera imaging pattern is mainly used in the image quality of checking the TDI camera, and double T DI camera imaging pattern promptly adopts two TDI cameras that are arranged side by side simultaneously, is mainly used in and determines imaging delay time between two TDI cameras.
Should be pointed out that the above embodiment can make those skilled in the art more fully understand the invention, but do not limit the present invention in any way creation.Therefore; although this instructions has been described in detail the invention with reference to drawings and Examples; but; those skilled in the art are to be understood that; still can make amendment or be equal to replacement the invention; in a word, all do not break away from the technical scheme and the improvement thereof of the spirit and scope of the invention, and it all should be encompassed in the middle of the protection domain of the invention patent.
Claims (7)
1. object simulation device that is applicable to the TDI camera, it is characterized in that, comprise camera lens, parallel light tube, cylinder, light source and cylinder controller, described parallel light tube is arranged between camera lens and the cylinder, described camera lens is the supporting camera lens of TDI camera, described camera lens is arranged at the output terminal of parallel light tube, camera lens, parallel light tube and light source are on same optical axis, the central shaft of cylinder and central shaft vertical with optical axis links to each other with the cylinder controller, on the cylinder side surface, be provided with euphotic zone around the drum central axis annular, post the target for the treatment of imaging on the described euphotic zone, it is inner and by the input end of euphotic zone towards parallel light tube that described light source is arranged at cylinder.
2. object simulation device according to claim 1 is characterized in that, the central shaft of described cylinder is outside by fixing tube-shaped shaft of bearing socket, and described light source is arranged on the tube-shaped shaft.
3. object simulation device according to claim 1 and 2 is characterized in that, described cylinder is horizontally disposed with or vertically is provided with.
4. object simulation device according to claim 3 is characterized in that, described euphotic zone is that organic glass or plastic material are made.
5. object simulation device according to claim 1 is characterized in that, described light source is annular LED source, and described light-source brightness is adjustable.
6. object simulation device according to claim 1 is characterized in that, described cylinder controller comprises control motor and CPLD, and described control motor links to each other with the central shaft of cylinder.
7. object simulation device according to claim 6 is characterized in that, described cylinder controller also comprises single-chip microcomputer, and described single-chip microcomputer links to each other with CPLD.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202112130U CN202092660U (en) | 2011-06-21 | 2011-06-21 | Scenery simulator applicable to TDI (Transport Driver Interface) camera |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202112130U CN202092660U (en) | 2011-06-21 | 2011-06-21 | Scenery simulator applicable to TDI (Transport Driver Interface) camera |
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| CN202092660U true CN202092660U (en) | 2011-12-28 |
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| CN2011202112130U Expired - Lifetime CN202092660U (en) | 2011-06-21 | 2011-06-21 | Scenery simulator applicable to TDI (Transport Driver Interface) camera |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780849A (en) * | 2014-01-21 | 2014-05-07 | 北京空间机电研究所 | Focal plane time schedule controller for synchronous electric charge transfer of TDICCD |
| CN106767907A (en) * | 2016-11-29 | 2017-05-31 | 上海卫星工程研究所 | Optical camera geometry imaging model high-precision calibrating and apparatus for evaluating and method |
| CN108896279A (en) * | 2018-06-07 | 2018-11-27 | 北京空间机电研究所 | A kind of autonomous matching test system of super quick dynamic middle imaging space camera integration time |
| CN110261072A (en) * | 2019-07-12 | 2019-09-20 | 北京空间机电研究所 | The dynamic target being imaged during a kind of analog is dynamic |
| CN113281014A (en) * | 2021-05-31 | 2021-08-20 | 中科院南京耐尔思光电仪器有限公司 | Dynamic scene simulation system and method for space camera test |
-
2011
- 2011-06-21 CN CN2011202112130U patent/CN202092660U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103780849A (en) * | 2014-01-21 | 2014-05-07 | 北京空间机电研究所 | Focal plane time schedule controller for synchronous electric charge transfer of TDICCD |
| CN106767907A (en) * | 2016-11-29 | 2017-05-31 | 上海卫星工程研究所 | Optical camera geometry imaging model high-precision calibrating and apparatus for evaluating and method |
| CN106767907B (en) * | 2016-11-29 | 2019-11-08 | 上海卫星工程研究所 | Optical camera geometry imaging model high-precision calibrating and assessment device and method |
| CN108896279A (en) * | 2018-06-07 | 2018-11-27 | 北京空间机电研究所 | A kind of autonomous matching test system of super quick dynamic middle imaging space camera integration time |
| CN110261072A (en) * | 2019-07-12 | 2019-09-20 | 北京空间机电研究所 | The dynamic target being imaged during a kind of analog is dynamic |
| CN113281014A (en) * | 2021-05-31 | 2021-08-20 | 中科院南京耐尔思光电仪器有限公司 | Dynamic scene simulation system and method for space camera test |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 100094 Beijing, Haidian District Cui Yuan Road No. 13, building 7, room 7, floor 701 Patentee after: LUSTER LIGHTTECH GROUP Co.,Ltd. Address before: 100195 Beijing city Haidian District xingshikou road Yiyuan cultural creative industry base in C District No. 2 Patentee before: BEIJING LUSTER LIGHTTECH Co.,Ltd. Address after: 100195 Beijing city Haidian District xingshikou road Yiyuan cultural creative industry base in C District No. 2 Patentee after: BEIJING LUSTER LIGHTTECH Co.,Ltd. Address before: 100097 Beijing city Haidian District landianchang Road No. 25 South Newton district office block 6 layer Patentee before: Beijing Luster Lightvision Co.,Ltd. |
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| CP03 | Change of name, title or address | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190202 Address after: Room 501, 5th floor, 7th building, No. 13 Courtyard, Cuihunan Ring Road, Haidian District, Beijing 100094 Patentee after: Beijing Lingyun Photon Technology Co.,Ltd. Address before: 100094 701, 7 floor, 7 building, 13 Cui Hunan Ring Road, Haidian District, Beijing. Patentee before: LUSTER LIGHTTECH GROUP Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111228 |
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| CX01 | Expiry of patent term |