CN103916609A - Infrared camera integration time sequence calibration device - Google Patents
Infrared camera integration time sequence calibration device Download PDFInfo
- Publication number
- CN103916609A CN103916609A CN201410109325.3A CN201410109325A CN103916609A CN 103916609 A CN103916609 A CN 103916609A CN 201410109325 A CN201410109325 A CN 201410109325A CN 103916609 A CN103916609 A CN 103916609A
- Authority
- CN
- China
- Prior art keywords
- infrared camera
- incremental encoder
- shutter
- motor
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
- Studio Devices (AREA)
Abstract
An infrared camera integration time sequence calibration device is applied to camera exposure time calibration and aims to solve the problem that in the prior art, an infrared camera integration time sequence cannot be accurately calibrated. According to the infrared camera integration time sequence calibration device, a motor, a shutter and an incremental encoder are connected through a transmission rod; the center line of the angular aperture of the shutter is aligned with the zero position of the incremental encoder; a control system receives a timing system external synchronization signal, a zero signal, an SIN signal and a COS signal which are provided by the incremental encoder are used as feedback elements for phase locking and speed measurement, a speed loop and a position loop are closed, and then the motor is controlled; the control system drives the motor, the motor drives the disk type shutter and the incremental encoder through the transmission rod, and the center line of the angular aperture of the shutter, the zero signal of the incremental encoder and the timing system external synchronization signal are made strictly synchronous; the time when light rays emitted from an infrared source pass through parallel light tubes and the center line of the angular aperture of the shutter and finally arrive at the target surface of an infrared camera is controlled. The infrared camera integration time sequence calibration device is high in calibration accuracy and convenient to use.
Description
Technical field
The present invention relates to infrared camera integration sequence caliberating device, be mainly used in the demarcation of infrared camera integration sequence and control, improve the quality of infrared camera output image.Also can be applied in industrial production and engineering the logical relation of camera exposure time, data output is demarcated and controlled simultaneously.Belong to infrared camera applied technical field.
Background technology
At present, infrared camera is operated under outer synchronous situation, and integration sequence has two kinds substantially, and one is to start integration after external synchronization signal arrives, and one is integration before external synchronization signal arrives, and the integration moment is uncertain.Even if, sometimes also can there is deviation in same producer, same type camera.Will impact the subsequent treatment of image like this, especially sequential be required to stricter digital picture storage, make image and the temporal information correspondence one by one of storage.
In order to address the above problem, its key technology is that the integration sequence of every infrared camera is demarcated.Traditional camera calibration method is to adopt stroboscope, time system output two-way synchronizing signal, and a road is outer synchronous as camera, and a road is as the pulse signal of lighting stroboscope.Imaging when checking that stroboscope is lighted on camera is demarcated integration sequence.But this kind of method is only applicable to visible camera, while demarcating infrared camera by this kind of method, due to the stroboscope temperature of still having a surplus after extinguishing, still can imaging on infrared camera, cannot obtain integration sequence relation accurately.Therefore invented a kind of device that can demarcate infrared camera integration sequence, to meet the requirement of the integration sequence of infrared camera being carried out to high-precision calibrating.
Summary of the invention
For solve prior art exist infrared camera integration sequence uncertain, stroboscope can only be demarcated visible camera integration sequence, cannot carry out to infrared camera integration sequence the technical problem of accurate calibration, the invention provides a kind of infrared camera integration sequence caliberating device, can carry out accurate calibration to every infrared camera integration sequence, and improve the output image quality of camera.
The technical scheme that technical solution problem of the present invention is taked is as follows:
Infrared camera integration sequence caliberating device, this device comprises motor, control system, shutter, transmission lever, parallel light tube, infrared radiation source and incremental encoder;
Motor, shutter and incremental encoder are arranged in transmission lever from left to right; Control system is connected with motor; The angular aperture center line of shutter and the zero line of incremental encoder are debug in advance, make both strictly keep alignment; The light that infrared radiation source sends is outgoing directional light after parallel light tube, and directional light is through shutter opening angle outgoing;
External synchronization signal is given control system and infrared camera by time system simultaneously; The external synchronization signal of uniting when control system receives, the zero signal providing by incremental encoder, SIN signal, COS signal carry out phase-locked and test the speed as feedback element, complete the closed loop of speed loop and position loop, realize the control to motor; Motor drives disc type shutter and incremental encoder by transmission lever, makes the zero-bit of external synchronization signal and incremental encoder strictly synchronous, and signal phase is consistent; Can control like this light that infrared camera sends at infrared radiation source finally arrives infrared camera target surface time by the shutter opening angle center line of parallel light tube and shutter.
The invention has the beneficial effects as follows: this system has realized the demarcation of infrared camera integration sequence, for the subsequent treatment of infrared image provides powerful guarantee, and improved the quality of camera output image.This system, according to infrared camera practical application, realizes the demarcation of single camera integration sequence completely, and accuracy is strong, working stability, cost are low, easy to use, compares with existing equipment, has the more wide scope of application and superiority.
Brief description of the drawings
Fig. 1 is infrared camera integration sequence caliberating device structural representation.
Fig. 2 is infrared camera integration sequence staking-out work block diagram.
Fig. 3 is infrared camera integration sequence caliberating device signal timing diagram.
Embodiment
Below in conjunction with accompanying drawing, the present invention is described in further detail.
As shown in Figure 1, infrared camera integration sequence caliberating device of the present invention comprises: motor 1, control system 2, shutter 3, transmission lever 4, parallel light tube 5, infrared radiation source 6 and incremental encoder 7.
Motor 1, shutter 3 and incremental encoder 7 are arranged in transmission lever 4 from left to right; Control system 2 is connected with motor 1; Shutter 3 and incremental encoder 7 are debug in advance, and shutter 3 angular aperture center lines are alignd with incremental encoder 7 zero-bits; The light that infrared radiation source 6 sends is outgoing directional light after parallel light tube 5, and directional light is through shutter opening angle outgoing.
As shown in Figure 2, time system is responsible for to control system 2, infrared radiation source 6 and infrared camera external synchronization signal, to ensure that caliberating device and infrared camera are operated under same sequential.
The external synchronization signal of uniting when control system 2 receives, the zero signal providing by incremental encoder 7, SIN signal, COS signal carry out phase-locked and test the speed as feedback element, complete the closed loop of speed loop and position loop, realize the control to motor 1.Motor 1 adopts direct current machine as executive component.
Motor 1, control system 2 and incremental encoder 7 form a double loop system, and interior ring is speed loop, are used for keeping the motion frequency of shutter 3 identical with outer synchronizing frequency; Outer shroud is position loop, is used for ensureing that the zero line of incremental encoder 7 strictly synchronizes with external synchronization signal.
Control system 2 drive motors 1, motor 1 drives disc type shutter 3 and incremental encoder 7 by transmission lever 4, makes the zero signal phase place of external synchronization signal and incremental encoder 7 consistent.As shown in Figure 3, when a is, system is issued the external synchronization signal of infrared camera to sequential relationship, and trailing edge is effective; When b is, system is issued the external synchronization signal of infrared radiation source 6, is used for lighting the light source of infrared radiation source; The phase pulse signal that when c is shutter opening angle maximum, incremental encoder 7 is exported; D is the infrared radiation source light source energy exemplary waveforms that reaches infrared camera target surface; Energy when e solid line part is infrared radiation source light source igniting, dotted portion is the energy while extinguishing.
Can guarantee that like this time that light that infrared camera can send at infrared radiation source 6 arrives camera target surface by the shutter opening angle center line of parallel light tube 5, shutter 3 is known, if in the imaging of camera target surface energy, illustrate that infrared energy is consistent by the time of shutter and the time of integration of camera, if the two is inconsistent, can not be in the imaging of camera target surface.
Infrared radiation source 6 adopts external extend blackbody, and temperature range is normal temperature～100 DEG C.Parallel light tube 5 bore 100mm, point-source of light when function, infrared radiation source 6 being sent converts directional light to and sends.
Claims (5)
1. infrared camera integration sequence caliberating device, is characterized in that, this device comprises motor (1), control system (2), shutter (3), transmission lever (4), parallel light tube (5), infrared radiation source (6) and incremental encoder (7);
Motor (1), shutter (3) and incremental encoder (7) are arranged in transmission lever (4) from left to right; Control system (2) is connected with motor (1); The zero line of the angular aperture center line of shutter (3) and incremental encoder (7) is debug in advance, makes both strictly keep alignment; The light that infrared radiation source (6) sends is outgoing directional light after parallel light tube (5), and directional light is through shutter opening angle outgoing;
External synchronization signal is given control system (2) and infrared camera by time system simultaneously; The external synchronization signal of uniting when control system (2) receives, the zero signal, SIN signal, the COS signal that provide by incremental encoder (7) carry out phase-locked and test the speed as feedback element, complete the closed loop of speed loop and position loop, realize the control to motor (1); Motor (1) drives disc type shutter (3) and incremental encoder (7) by transmission lever (4), makes the zero-bit of external synchronization signal and incremental encoder (7) strictly synchronous, and signal phase is consistent; Can control like this light that infrared camera sends at infrared radiation source (6) finally arrives infrared camera target surface time by the shutter opening angle center line of parallel light tube (5) and shutter (3).
2. infrared camera integration sequence caliberating device according to claim 1, motor (1), control system (2) and a double loop system of incremental encoder (7) composition, interior ring is speed loop, is used for keeping the motion frequency of shutter (3) identical with outer synchronizing frequency; Outer shroud is position loop, is used for ensureing that the zero signal of incremental encoder (7) strictly synchronizes with external synchronization signal.
3. infrared camera integration sequence caliberating device according to claim 1, parallel light tube (5) bore 100mm, function is that point-source of light that infrared radiation source (6) is sent converts directional light to and sends.
4. infrared camera integration sequence caliberating device according to claim 1, infrared radiation source (6) adopts external extend blackbody, and temperature range is normal temperature～100 DEG C.
5. infrared camera integration sequence caliberating device according to claim 1, the time external synchronization signal phase alignment of uniting of the zero signal of incremental encoder (7) and reception, and ensure that control precision is less than 3 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109325.3A CN103916609B (en) | 2014-03-21 | 2014-03-21 | Infrared camera integration sequence caliberating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410109325.3A CN103916609B (en) | 2014-03-21 | 2014-03-21 | Infrared camera integration sequence caliberating device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103916609A true CN103916609A (en) | 2014-07-09 |
| CN103916609B CN103916609B (en) | 2017-04-05 |
Family
ID=51041965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410109325.3A Expired - Fee Related CN103916609B (en) | 2014-03-21 | 2014-03-21 | Infrared camera integration sequence caliberating device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103916609B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307979A (en) * | 2017-07-28 | 2019-02-05 | 中国科学院长春光学精密机械与物理研究所 | A kind of curtain seam focal plane shutter and breadth signal detection mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006319602A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Electric Corp | Solid-state image pickup apparatus and method for detecting flicker defect |
| WO2009154533A1 (en) * | 2008-06-19 | 2009-12-23 | Flir Systems Ab | Device for imaging within the ir range |
| CN103335716A (en) * | 2013-06-21 | 2013-10-02 | 中国科学院西安光学精密机械研究所 | Area array infrared camera quick scaling and heterogeneity calibrating method based on variant integral time |
| US20130307991A1 (en) * | 2009-11-06 | 2013-11-21 | Steven Olsen | Infrared sensor control architecture |
| CN103475821A (en) * | 2013-10-11 | 2013-12-25 | 中科院微电子研究所昆山分所 | Adjustment method based on automatic integration time of near infrared camera |
-
2014
- 2014-03-21 CN CN201410109325.3A patent/CN103916609B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006319602A (en) * | 2005-05-12 | 2006-11-24 | Mitsubishi Electric Corp | Solid-state image pickup apparatus and method for detecting flicker defect |
| WO2009154533A1 (en) * | 2008-06-19 | 2009-12-23 | Flir Systems Ab | Device for imaging within the ir range |
| US20130307991A1 (en) * | 2009-11-06 | 2013-11-21 | Steven Olsen | Infrared sensor control architecture |
| CN103335716A (en) * | 2013-06-21 | 2013-10-02 | 中国科学院西安光学精密机械研究所 | Area array infrared camera quick scaling and heterogeneity calibrating method based on variant integral time |
| CN103475821A (en) * | 2013-10-11 | 2013-12-25 | 中科院微电子研究所昆山分所 | Adjustment method based on automatic integration time of near infrared camera |
Non-Patent Citations (1)
| Title |
|---|
| 孙德伟: "空间红外相机标定机构的设计与随机振动分析", 《红外与激光工程》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307979A (en) * | 2017-07-28 | 2019-02-05 | 中国科学院长春光学精密机械与物理研究所 | A kind of curtain seam focal plane shutter and breadth signal detection mechanism |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103916609B (en) | 2017-04-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103744372B (en) | The multisensor method for synchronizing time of unmanned plane electric inspection process and system | |
| CN101644887A (en) | Method and system thereof for measuring time of exposure of door-control type image intensifier | |
| CN105223762A (en) | Light source output control method, system and laser projection device | |
| CN103108125B (en) | A kind of capture Synchronizing Control Devices of multicamera system and method thereof | |
| CN102890401B (en) | Shutter delay measurement system for cameras | |
| US20130265639A1 (en) | Accurate Telescope Tracking System with a Calibrated Rotary Encoder | |
| CN105759547A (en) | Double-color wheel synchronization control method and system for light source, and laser projection equipment | |
| CN108965734A (en) | Ultrahigh speed imaging method based on synchronously control | |
| CN104965387A (en) | Exposure time, frame rate and smear test device and test method | |
| CN105354854A (en) | Camera parameter dynamic united calibration method and system based on three-dimensional digital model | |
| CN104333706A (en) | Device and method for photographing object moving at high speed | |
| CN107024830A (en) | The delay of camera mechanical shutter exposure determines device and method | |
| CN103916609A (en) | Infrared camera integration time sequence calibration device | |
| CN103943965B (en) | A kind of cable mesh reflector long adjusting device of the differential rope of deployable antenna screw thread and method of adjustment | |
| CN205229658U (en) | Compensation filter structure among multi -sequence laser shade photographic system | |
| CN104344766B (en) | HWIL simulation IR point source/imaging complex target calibrating installation and calibration steps | |
| CN103674058A (en) | Indoor detection method for angle tracking precision of swinging mirror | |
| CN204302657U (en) | A kind of device utilizing single camera to realize binocular vision three-dimensional imaging | |
| CN106657982B (en) | A kind of camera module image clarity calibration method and device | |
| CN104238259A (en) | Imaging system light path structure in multi-sequence laser shadow photographing system | |
| CN104793457B (en) | Laser timing signal scaling method for rotary mirror type framing camera high-speed photography | |
| CN109892034B (en) | A kind of multi-mode composite target simulator based on five-axis flight table | |
| Chengping et al. | A new calibration method for vision system using differential GPS | |
| CN103575510B (en) | A kind of screen optical detection method | |
| CN204514568U (en) | A kind of sagnac interferometer two-arm angular error measuring system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| 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: 20170405 Termination date: 20200321 |