CN101963696A - Night-vision device with ranging function - Google Patents
Night-vision device with ranging function Download PDFInfo
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- CN101963696A CN101963696A CN 201010257072 CN201010257072A CN101963696A CN 101963696 A CN101963696 A CN 101963696A CN 201010257072 CN201010257072 CN 201010257072 CN 201010257072 A CN201010257072 A CN 201010257072A CN 101963696 A CN101963696 A CN 101963696A
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Abstract
The invention discloses a night-vision device with ranging function, and belongs to the field of monitoring devices. The technical scheme is that: the night-vision device comprises a pulse laser and an ICCD camera with a gate, wherein the ICCD camera can realize range-gated imaging; a range-gated synchronous controller is arranged between the pulse laser and the ICCD camera; the range-gated synchronous controller can make pulses of the pulse laser and the ICCD camera correctly matched on time sequence, separate useful signals reflected by background radiation and an object due to back scattering in different ranges according to the time sequence, so that the useful signals reflected by the detected object reach the camera and are imaged just in the gate working time of the camera. The night-vision device has the advantage that: the night-vision device automatically measuring the range between the camera and the object through the pulse laser and the ICCD camera with the range-gated imaging function, and makes the monitoring more effective.
Description
Technical field
The present invention relates to a kind of watch-dog, relate in particular to a kind of night vision device with distance measurement function.
Background technology
Advantages such as laser night-vision device has low in energy consumption, and operating distance is far away, as emerging night vision technology in the market widespread use.General laser night-vision device adopts CW-laser illuminator, and laser beam enters the CCD camera behind target reflection, and target obtains imaging.This night vision device only can be found target but can't detect target range.
Summary of the invention
The present invention be directed to the existing in prior technology shortcoming, and a kind of technical scheme that can have the night vision device of distance measurement function is provided, this scheme adopts the automatic measurement of distance between pulsed laser and ICCD camera realization video camera with range gating imaging function and the target.
The present invention realizes by following technical measures: a kind of night vision device with distance measurement function, and it comprises pulsed laser and has the ICCD camera of storbing gate that described ICCD camera can be realized the range gating imaging; Be provided with the range gating isochronous controller between described pulsed laser and the ICCD camera, described range gating isochronous controller can make the pulse of pulsed laser and ICCD video camera correctly cooperate on sequential, separate the useful signal that background radiation that the back scattering on the different distance causes and target reflection return with the priority of time, make from the useful signal of detected target reflected back and just in the time of video camera gating work, arrive video camera and imaging.
Concrete characteristics of the present invention also have, and above-mentioned range gating isochronous controller is a synchronization control circuit, and synchronization control circuit comprises timing circuit, and timing circuit can make the laser radiation of camera shutter unlatching and pulsed laser synchronous.
The beneficial effect of this programme can learn that employing this programme can obtain the distance between night vision device and the target automatically according to the narration to such scheme, makes that monitoring is more effective.
Description of drawings
Fig. 1 is an imaging schematic diagram of the present invention.
The timing diagram of the ideal distance gating imaging among Fig. 2 when 1200m place target observed.
Embodiment
For clearly demonstrating the technical characterstic of this programme,, this programme is set forth below by an embodiment.
A kind of night vision device with distance measurement function, as shown in Figure 1, it comprises pulsed laser and has the ICCD camera of storbing gate that described ICCD camera can be realized the range gating imaging; Be provided with the range gating isochronous controller between described pulsed laser and the ICCD camera, described range gating isochronous controller can make the pulse of pulsed laser and ICCD video camera correctly cooperate on sequential, separate the useful signal that background radiation that the back scattering on the different distance causes and target reflection return with the priority of time, make from the useful signal of detected target reflected back and just in the time of video camera gating work, arrive video camera and imaging.The range gating isochronous controller is a synchronization control circuit, and synchronization control circuit comprises timing circuit, and timing circuit can make the laser radiation of camera shutter unlatching and pulsed laser synchronous.
Image-forming principle of the present invention is: the short pulse that pulsed laser emission is very strong, pulse laser is transferred on the target, and target is shone, and turns back to the ICCD camera by the laser of target reflection.When laser pulse was among the round figure, ICCD camera storbing gate was in closed condition, has blocked the rear orientation light that the atmosphere suspended particulates cause like this.When target reflection laser arrived the ICCD camera, storbing gate was opened, and allowed the reflected light from target enter the ICCD video camera.It is consistent with laser pulse that the ICCD video camera is opened the duration, and it is main relevant with target peripheral reflection light to form target image like this, has improved signal noise ratio (snr) of image greatly.Produce storbing gate trunon delay time τ according to pulse laser equally and can calculate target range s=τ * 3 * 10
8/ 2m.
Storbing gate trunon delay time τ is the turnaround time that laser beam arrives target, under the target range condition of unknown, the storbing gate trunon delay time is that time delay of strobe pulse is with certain interval scan, according to the locking delayed time of Image Definition.And computed range is added in the video with real-time display-object distance.Image Definition has multiple mode, and this programme adopts image outline extraction carrying out brightness summing mode.
Can the range gating isochronous controller be one of key of range gating laser imaging system, be directly connected to the gating image that obtain target.
The range gating isochronous controller mainly is that the pulse of laser instrument and ICCD video camera are correctly cooperated on sequential, separate the useful signal that background radiation that the back scattering on the different distance causes and target reflection return with the priority of time, make from the useful signal of detected target reflected back and just in the time of video camera gating work, arrive video camera and imaging.Therefore isochronous controller is the key that realizes range gating.
Isochronous controller can realize that synchronization control circuit is used for determining bright pulse and the sequential between the ICCD video camera strobe pulse and the corresponding time-delay relation of pulsed laser by the design synchronization control circuit.Synchronization control circuit is mainly by forming the synchronous timing circuit of shutter opening and laser radiation, and timing depends on that the research that laser pulse is transferred to the gating of maritime search and rescue target again imaging technique on the target reflexes to the needed time of receiver.Provided the timing diagram of the ideal distance gating imaging when 1200m place target observed among Fig. 2.Waveform A is laser pulse illumination output among the figure: waveform B is the variation of the laser illuminator pulse back scattering radiation that receives of receiver; To be laser pulse turn back to reflected radiation on the receiver by target to waveform C; Waveform D is the strobe pulse of receiver; τ is the time delay of delayed-pulse generator; t
wGate width for receiver.Because target range is 1220m, the laser beam turnaround time is about 8 μ s, so strobe pulse should send time delay 8 μ s according to bright laser pulse.Waveform D is desirable strobe pulse among the figure, and actual range gating synchronization control circuit is exactly to make the time-delay of strobe pulse accurate as much as possible, so just can obtain the desirable gating image of target.And because the velocity of propagation of laser is 3 * 10
8M/s, thus the time delay of strobe pulse be microsecond, even nanosecond order, this is a big difficult point of range gating synchro control.
The present invention can pass through or adopt existing techniques in realizing without the technical characterictic of describing; do not repeat them here; certainly; above-mentioned explanation is not to be limitation of the present invention; the present invention also is not limited in above-mentioned giving an example; variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present invention also should belong to protection scope of the present invention.
Claims (2)
1. the night vision device with distance measurement function is characterized in that, it comprises pulsed laser and have the ICCD camera of storbing gate that described ICCD camera can be realized the range gating imaging; Be provided with the range gating isochronous controller between described pulsed laser and the ICCD camera, described range gating isochronous controller can make the pulse of pulsed laser and ICCD video camera correctly cooperate on sequential, separate the useful signal that background radiation that the back scattering on the different distance causes and target reflection return with the priority of time, make from the useful signal of detected target reflected back and just in the time of video camera gating work, arrive video camera and imaging.
2. the night vision device with distance measurement function according to claim 1, it is characterized in that, described range gating isochronous controller is a synchronization control circuit, and synchronization control circuit comprises timing circuit, and timing circuit can make the laser radiation of camera shutter unlatching and pulsed laser synchronous.
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| CN 201010257072 CN101963696A (en) | 2010-08-19 | 2010-08-19 | Night-vision device with ranging function |
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Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736085A (en) * | 2012-06-21 | 2012-10-17 | 中国科学院半导体研究所 | Image target seeking laser imaging distance measurement method and device |
| CN102749625A (en) * | 2012-06-28 | 2012-10-24 | 北京航空航天大学 | Range-gating laser-imaging detection method for cat-eye effect target |
| CN102749702A (en) * | 2012-06-28 | 2012-10-24 | 北京航空航天大学 | Red exposure eliminating method of hand-held semiconductor laser active night-vision device |
| CN103905691A (en) * | 2014-03-27 | 2014-07-02 | 深圳市保千里电子有限公司 | Method for obtaining sharp image through penetration through rain, snow and fog, and photographing system |
| CN104483097A (en) * | 2014-11-10 | 2015-04-01 | 中国科学院半导体研究所 | Device and method for measuring optical gate width of gating image intensifier |
| CN105204032A (en) * | 2015-09-29 | 2015-12-30 | 中国人民解放军装备学院 | Laser detection system for three-dimensional imaging of moving object and imaging method |
| CN105991933A (en) * | 2015-02-15 | 2016-10-05 | 比亚迪股份有限公司 | Image sensor |
| CN105991934A (en) * | 2015-02-15 | 2016-10-05 | 比亚迪股份有限公司 | Imaging system |
| CN105991935A (en) * | 2015-02-15 | 2016-10-05 | 比亚迪股份有限公司 | Exposure control device and exposure control method |
| CN106094195A (en) * | 2016-06-21 | 2016-11-09 | 河南平原光电有限公司 | A kind of possess window see take aim at, the hand-held passive binoculars of camera function |
| CN106997046A (en) * | 2017-05-17 | 2017-08-01 | 成都理工大学 | Laser displacement display systems and measuring system |
| CN108120990A (en) * | 2017-12-29 | 2018-06-05 | 山东神戎电子股份有限公司 | A kind of method for improving range gating night vision device range accuracy |
| CN110609298A (en) * | 2019-09-26 | 2019-12-24 | 湖南国天电子科技有限公司 | Distance gate control method and device suitable for detecting complex scene |
| CN112040116A (en) * | 2020-07-20 | 2020-12-04 | 清华大学 | Non-vision field dynamic imaging method and device based on aperture-division gating camera |
| CN114858088A (en) * | 2022-04-06 | 2022-08-05 | 北京神网创新科技有限公司 | Industrial kiln detection method and device |
| CN115343718A (en) * | 2022-07-27 | 2022-11-15 | 中国科学院西安光学精密机械研究所 | Range gating ranging method based on streak camera |
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Cited By (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102736085B (en) * | 2012-06-21 | 2014-03-12 | 中国科学院半导体研究所 | Image target seeking laser imaging distance measurement method and device |
| CN102736085A (en) * | 2012-06-21 | 2012-10-17 | 中国科学院半导体研究所 | Image target seeking laser imaging distance measurement method and device |
| CN102749625A (en) * | 2012-06-28 | 2012-10-24 | 北京航空航天大学 | Range-gating laser-imaging detection method for cat-eye effect target |
| CN102749702A (en) * | 2012-06-28 | 2012-10-24 | 北京航空航天大学 | Red exposure eliminating method of hand-held semiconductor laser active night-vision device |
| CN102749702B (en) * | 2012-06-28 | 2014-04-16 | 北京航空航天大学 | Red exposure eliminating method of hand-held semiconductor laser active night-vision device |
| CN103905691B (en) * | 2014-03-27 | 2015-07-15 | 深圳市保千里电子有限公司 | Method for obtaining sharp image through penetration through rain, snow and fog, and photographing system |
| CN103905691A (en) * | 2014-03-27 | 2014-07-02 | 深圳市保千里电子有限公司 | Method for obtaining sharp image through penetration through rain, snow and fog, and photographing system |
| CN104483097B (en) * | 2014-11-10 | 2017-11-24 | 中国科学院半导体研究所 | The device and method of measurement gating image intensifier optics gate-width |
| CN104483097A (en) * | 2014-11-10 | 2015-04-01 | 中国科学院半导体研究所 | Device and method for measuring optical gate width of gating image intensifier |
| CN105991933B (en) * | 2015-02-15 | 2019-11-08 | 比亚迪股份有限公司 | Imaging sensor |
| CN105991933A (en) * | 2015-02-15 | 2016-10-05 | 比亚迪股份有限公司 | Image sensor |
| CN105991934A (en) * | 2015-02-15 | 2016-10-05 | 比亚迪股份有限公司 | Imaging system |
| CN105991935A (en) * | 2015-02-15 | 2016-10-05 | 比亚迪股份有限公司 | Exposure control device and exposure control method |
| CN105991934B (en) * | 2015-02-15 | 2019-11-08 | 比亚迪股份有限公司 | Imaging system |
| CN105991935B (en) * | 2015-02-15 | 2019-11-05 | 比亚迪股份有限公司 | Exposure-control device and exposal control method |
| CN105204032A (en) * | 2015-09-29 | 2015-12-30 | 中国人民解放军装备学院 | Laser detection system for three-dimensional imaging of moving object and imaging method |
| CN106094195A (en) * | 2016-06-21 | 2016-11-09 | 河南平原光电有限公司 | A kind of possess window see take aim at, the hand-held passive binoculars of camera function |
| CN106997046A (en) * | 2017-05-17 | 2017-08-01 | 成都理工大学 | Laser displacement display systems and measuring system |
| CN106997046B (en) * | 2017-05-17 | 2023-08-11 | 成都理工大学 | Laser displacement display system and measuring system |
| CN108120990A (en) * | 2017-12-29 | 2018-06-05 | 山东神戎电子股份有限公司 | A kind of method for improving range gating night vision device range accuracy |
| CN108120990B (en) * | 2017-12-29 | 2021-03-23 | 山东神戎电子股份有限公司 | Method for improving range finding precision of range gating night vision device |
| CN110609298A (en) * | 2019-09-26 | 2019-12-24 | 湖南国天电子科技有限公司 | Distance gate control method and device suitable for detecting complex scene |
| CN110609298B (en) * | 2019-09-26 | 2020-06-30 | 湖南国天电子科技有限公司 | Distance gate control method and device suitable for detecting complex scene |
| CN112040116A (en) * | 2020-07-20 | 2020-12-04 | 清华大学 | Non-vision field dynamic imaging method and device based on aperture-division gating camera |
| CN112040116B (en) * | 2020-07-20 | 2022-07-29 | 清华大学 | Non-vision field dynamic imaging method and device based on aperture-division gating camera |
| CN114858088A (en) * | 2022-04-06 | 2022-08-05 | 北京神网创新科技有限公司 | Industrial kiln detection method and device |
| CN115343718A (en) * | 2022-07-27 | 2022-11-15 | 中国科学院西安光学精密机械研究所 | Range gating ranging method based on streak camera |
| CN115343718B (en) * | 2022-07-27 | 2024-04-12 | 中国科学院西安光学精密机械研究所 | Distance control and measurement method of distance gate based on stripe camera |
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Application publication date: 20110202 |