CN101285666A - Laser targeting device based on four quadrant optical-electric detector - Google Patents
Laser targeting device based on four quadrant optical-electric detector Download PDFInfo
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- CN101285666A CN101285666A CNA2008100697640A CN200810069764A CN101285666A CN 101285666 A CN101285666 A CN 101285666A CN A2008100697640 A CNA2008100697640 A CN A2008100697640A CN 200810069764 A CN200810069764 A CN 200810069764A CN 101285666 A CN101285666 A CN 101285666A
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Abstract
The invention relates to a laser shooting device based on a four-quadrant photodetector, comprising a laser emitting system, a laser receiving system and a signal processing part. The laser receiving system consists of a substrate, a semi-permeable semi-reflective mirror, an imaging screen, a lens, a filter and the four-quadrant photodetector; after a laser beam passes the semi-permeable semi-reflective mirror, the light is divided into two paths; one path of light is transmitted onto the substrate, and the other path of light is reflected by the semi-permeable semi-reflective mirror and then forms an image on a photosensitive surface of the four-quadrant photodetector after passing the imaging screen, the lens and the filter orderly; signals of the four-quadrant photodetector are amplified via a signal processing circuit, shaped and accessed to an A/D conversion circuit; finally a computer is accessed for carrying out signal processing, the simulative display of laser impact points and the score display of shooters.
Description
Technical field
The invention belongs to laser technology field, relate in particular to a kind of laser target shooting device based on four-quadrant photo detector of practicing shooting and training that is used to simulate.
Background technology
The laser target shooting device all is widely used in amusement, military training at present, and amusement type laser target shooting device mainly contains the Nanjing thunder, Kingsoft, Shenyang two companies produce.Aspect military gunnery training, many at country's research laser target shooting device, replace traditional bullet with the laser bullet, to save the training spending. China also has indivedual units to be engaged in the research of laser target shooting device, and produce corresponding product, but because these products can't meet the military training requirement fully, so range of application and limited.Common laser target shooting device has a significant disadvantages, adopts a large amount of photodiodes to be arranged on the target surface as detector array exactly, not only cost an arm and a leg, and the subsequent treatment complexity of signal.
Summary of the invention
The present invention is directed to the deficiency that prior art exists, a kind of laser target shooting device based on four-quadrant photo detector is provided, has adopted four-quadrant photo detector, not only improved the precision and the stability of target practice device greatly as photodetector, and having reduced cost, the subsequent treatment of signal is simple.
This laser target shooting device comprises that mainly laser transmitting system, laser accepts system and signal processing, and described laser is accepted system and is made up of substrate, semi-transparent semi-reflecting lens, imaging screen, lens, filter plate and four-quadrant photo detector; Laser beam that laser transmitting system sends is through semi-transparent semi-reflecting lens, and light is divided into two-way, and one road light is transmitted on the substrate, another road light by semi-transparent semi-reflecting mirroring after, image on the four-quadrant photo detector photosurface through imaging screen, lens, filter plate successively; The signal of four-quadrant photo detector inserts the A/D change-over circuit after the amplification of signal processing circuit, shaping, insert computer at last and further handle and show.
Semi-transparent semi-reflecting lens is from the horizontal by 45 in this laser target shooting device, and imaging screen is the thin screen of the printing opacity of horizontal positioned.Detector adopts PIN four-quadrant photo detector or APD four-quadrant photo detector, and it has four to have symmetric photosurface, and photosurface is circle or rectangle.Utilization hot spot area difference on four quadrants of four-quadrant photo detector causes the difference of four quadrant output signals, determine the side-play amount of spot center at four-quadrant photo detector, and there is certain mathematical relationship with respect to the side-play amount and the spot center of four-quadrant photo detector in spot center in the target surface side-play amount, thereby sets up the Mathematical Modeling of four-quadrant output signal and hot spot deviation angle and amplitude on target surface.The four-quadrant photo detector output signal is through preposition amplification, and the master amplifies, and signal connects the A/D change-over circuit then, and the A/D conversion adopts common data collecting card to carry out.Except the pairing perpendicular of semi-transparent semi-reflecting lens, whole receiving system all is in the darkroom of sealing.This target practice device need be finished its function in conjunction with software section.Software section is to utilize the graphical programming language LABVIEW of development of virtual instrument to realize.Software section has comprised that mainly signal processing, the simulation of laser position show, ejaculator's achievement shows.
Advantage of the present invention mainly is to have adopted four-quadrant photo detector as detector, by the skew of hot spot with respect to detector photosurface center, judges the position of laser on target, thereby has improved the precision of target practice device greatly.
Description of drawings
Fig. 1 is the hardware principle block diagram of this laser target shooting device;
Fig. 2 is the software flow pattern of this laser target shooting device.
The specific embodiment
The structure of this laser target shooting device hardware components is referring to Fig. 1, comprise that mainly laser transmitting system 1, laser accepts system 2 and signal processing 3, described laser is accepted system and is made up of substrate 21, semi-transparent semi-reflecting lens 22, imaging screen 23, lens 24, filter plate 25 and four-quadrant photo detector 26; Laser beam is through semi-transparent semi-reflecting lens 22, and light is divided into two-way, and one road light is transmitted on the substrate 21, and another road light images on four-quadrant photo detector 26 photosurfaces through imaging screen 23, lens 24, filter plate 25 after being reflected by semi-transparent semi-reflecting lens 22 successively.Semi-transparent semi-reflecting lens is from the horizontal by 45 in this laser target shooting device, and imaging screen is the thin screen of the printing opacity of horizontal positioned.Detector adopts PIN four-quadrant photo detector or APD four-quadrant photo detector, and it has four to have symmetric photosurface, and photosurface can be circle or rectangle.Utilization hot spot area difference on four quadrants of four-quadrant photo detector causes the difference of four quadrant output signals, determines the side-play amount of spot center at four-quadrant photo detector
Hot spot is in the area difference of four quadrants of four-quadrant photo detector, the electric current difference that corresponding four quadrants produce, and an electric current that produces to four-quadrant is respectively: i
1, i
2, i
3, i
4Then hot spot in horizontal and vertical side-play amount is:
K in the formula is a proportionality coefficient, is a constant.When spot center is consistent with the 4 quadrant detector center, the current i that the four-quadrant negative electrode produces
1, i
2, i
3, i
4Equate that all the straightness error of both direction is zero; When both centers did not overlap, the side-play amount of both direction can be obtained the amplitude ρ of skew and angle by following formula (1)
Be respectively:
Thereby can obtain on target surface spot center with respect to the skew at target surface center, the amplitude ρ ' of skew and angle
Be respectively:
When
(k-1)d≤ρ′＜kd，k＝1，2，3，4，5 (4)
Wherein d is the every ring spacing of target surface.Then hitting number of rings n is:
n＝11-k (5)
The signal of four-quadrant photo detector is after the amplification of signal processing circuit 3, shaping, insert the A/D change-over circuit, import computer 5 at last and carry out the signal processing by software, calculate spot center deviation angle and amplitude, determine the position of hot spot, and realize that the simulation of laser position shows, ejaculator's achievement shows at target surface.
The A/D conversion adopts common data collecting card to carry out.This target practice device need be finished its function in conjunction with software section.Software section is to utilize the graphical programming language LABVIEW of development of virtual instrument to realize.Software section has comprised that mainly signal processing, the simulation of laser position show, ejaculator's achievement shows.
Software flow pattern is referring to Fig. 2, calling corresponding dynamic link in LABVIEW drives the data capture card, realize the output of data acquisition and digital quantity, calculate facula deviation angle and amplitude by the output amount of calculation, thereby judge whether to miss the target according to deviation angle and amplitude.If do not miss the target, show the position in simulation on the target surface, as miss the target and then do not show.On the interface, show simultaneously this achievement of ejaculator.
Claims (6)
1, a kind of laser target shooting device based on four-quadrant photo detector, comprise that laser transmitting system, laser accepts system and signal processing, it is characterized in that: described laser is accepted system and is made up of substrate, semi-transparent semi-reflecting lens, imaging screen, lens, filter plate and four-quadrant photo detector; Laser beam that laser transmitting system sends is through semi-transparent semi-reflecting lens, and light is divided into two-way, and one road light is transmitted on the substrate, another road light by semi-transparent semi-reflecting mirroring after, successively through imaging in behind imaging screen, lens, the filter plate on the four-quadrant photo detector photosurface; Signal on the four-quadrant photo detector inserts the A/D change-over circuit after the amplification of signal processing circuit, shaping, insert computer at last and handle, and realizes that the simulation demonstration of laser position, ejaculator's achievement show; The centre wavelength of optical filter described in the light path is 630～650nm.
2, the laser target shooting device based on four-quadrant photo detector according to claim 1 is characterized in that: semi-transparent semi-reflecting lens is from the horizontal by 45, and imaging screen is the thin screen of the printing opacity of horizontal positioned.
3, the laser target shooting device based on four-quadrant photo detector according to claim 1 and 2, it is characterized in that: detector adopts PIN four-quadrant photo detector or APD four-quadrant photo detector, it has four to have symmetric photosurface, and photosurface is circle or rectangle.
4, the laser target shooting device based on four-quadrant photo detector according to claim 3, it is characterized in that: utilization hot spot area difference on four quadrants of four-quadrant photo detector causes the difference of four quadrant output signals, determine the side-play amount of spot center at four-quadrant photo detector, and there be corresponding mathematical relationship with spot center in spot center in the target surface side-play amount with respect to the side-play amount of four-quadrant photo detector, thereby sets up the Mathematical Modeling of four-quadrant output signal and hot spot deviation angle and distance on target surface.
5, the laser target shooting device based on 4 quadrant detector according to claim 4, it is characterized in that: the four-quadrant photo detector output signal is through preposition amplification, the main amplification, then signal being carried out signal through A/D change-over circuit input computer by software handles, calculate spot center deviation angle and amplitude, determine the position of hot spot, and realize that the simulation of laser position shows, ejaculator's achievement shows at target surface.
6, according to claim 1 or 2 or 4 described laser target shooting devices based on 4 quadrant detector, it is characterized in that: except the pairing perpendicular of semi-transparent semi-reflecting lens, whole laser is accepted in the darkroom that system all is in sealing.
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| CN2008100697640A CN101285666B (en) | 2008-05-29 | 2008-05-29 | Laser targeting device based on four quadrant optical-electric detector |
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| CN2008100697640A CN101285666B (en) | 2008-05-29 | 2008-05-29 | Laser targeting device based on four quadrant optical-electric detector |
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| CN101285666B CN101285666B (en) | 2011-04-13 |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852571A (en) * | 2010-06-01 | 2010-10-06 | 陈丁丁 | Method for tracking aiming point during shooting process |
| CN101986246A (en) * | 2010-11-04 | 2011-03-16 | 浙江大学 | Light-spot positioning-based interactive screen |
| CN102323590A (en) * | 2011-05-30 | 2012-01-18 | 北京理工大学 | Device for accurately identifying semi-active laser target azimuth |
| CN103384172A (en) * | 2013-06-28 | 2013-11-06 | 中国航天科技集团公司第五研究院第五一三研究所 | Laser wireless energy transfer communication and tracking integrating system and method |
| CN103389009A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Laser automatic target shooting circuit |
| WO2014067184A1 (en) * | 2012-10-30 | 2014-05-08 | 华中科技大学 | Apparatus based on four-quadrant detector and for measuring flow field in cavity of pulsed gas laser |
| CN103884357A (en) * | 2014-03-27 | 2014-06-25 | 中国科学院西安光学精密机械研究所 | Large-view-field dual-waveband dynamic target and interference source simulation device |
| CN105004269A (en) * | 2015-07-16 | 2015-10-28 | 北京工业大学 | Four-quadrant sensor light spot deviation measurement method for laser tracker |
| CN105572836A (en) * | 2015-12-17 | 2016-05-11 | 中国工程物理研究院流体物理研究所 | High-power laser targeting optical path adjusting system and method based on LabVIEW |
| CN107102337A (en) * | 2017-05-18 | 2017-08-29 | 哈尔滨工业大学 | The field-compensation measuring method of the active azimuthal measurement apparatus of trailing type laser half |
| CN109373816A (en) * | 2018-11-12 | 2019-02-22 | 宋兵 | A kind of laser facula and echo tracking monitoring device |
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| DE4029877C2 (en) * | 1990-09-21 | 1999-01-07 | Nova Technik Tech Geraete Gmbh | Shooting training facility |
| JP3039897B2 (en) * | 1993-01-08 | 2000-05-08 | 農林水産省北海道農業試験場長 | Perishable material |
| CN1099476A (en) * | 1993-08-24 | 1995-03-01 | 北京中科半导体科技发展公司 | Multi-functional electric analog system and method for multi-gun and multi-target shooting |
| US5410815A (en) * | 1994-04-29 | 1995-05-02 | Cubic Defense Systems, Inc. | Automatic player identification small arms laser alignment system |
| CN1093253C (en) * | 2000-11-02 | 2002-10-23 | 南昌铁路局科学技术研究所 | Hit telling system with laser azimuth sensor |
| CN2623298Y (en) * | 2002-07-08 | 2004-07-07 | 北京光电技术研究所 | Analog laser shooting system based on position sensor |
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2008
- 2008-05-29 CN CN2008100697640A patent/CN101285666B/en not_active Expired - Fee Related
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852571B (en) * | 2010-06-01 | 2013-06-12 | 陈丁丁 | Method for tracking aiming point during shooting process |
| CN101852571A (en) * | 2010-06-01 | 2010-10-06 | 陈丁丁 | Method for tracking aiming point during shooting process |
| CN101986246A (en) * | 2010-11-04 | 2011-03-16 | 浙江大学 | Light-spot positioning-based interactive screen |
| CN102323590A (en) * | 2011-05-30 | 2012-01-18 | 北京理工大学 | Device for accurately identifying semi-active laser target azimuth |
| CN103389009A (en) * | 2012-05-11 | 2013-11-13 | 四川优的科技有限公司 | Laser automatic target shooting circuit |
| WO2014067184A1 (en) * | 2012-10-30 | 2014-05-08 | 华中科技大学 | Apparatus based on four-quadrant detector and for measuring flow field in cavity of pulsed gas laser |
| CN103384172A (en) * | 2013-06-28 | 2013-11-06 | 中国航天科技集团公司第五研究院第五一三研究所 | Laser wireless energy transfer communication and tracking integrating system and method |
| CN103884357A (en) * | 2014-03-27 | 2014-06-25 | 中国科学院西安光学精密机械研究所 | Large-view-field dual-waveband dynamic target and interference source simulation device |
| CN103884357B (en) * | 2014-03-27 | 2016-08-17 | 中国科学院西安光学精密机械研究所 | Large-view-field dual-waveband dynamic target and interference source simulation device |
| CN105004269A (en) * | 2015-07-16 | 2015-10-28 | 北京工业大学 | Four-quadrant sensor light spot deviation measurement method for laser tracker |
| CN105004269B (en) * | 2015-07-16 | 2017-10-10 | 北京工业大学 | Four-quadrant sensor light spot deviation measurement method for laser tracker |
| CN105572836A (en) * | 2015-12-17 | 2016-05-11 | 中国工程物理研究院流体物理研究所 | High-power laser targeting optical path adjusting system and method based on LabVIEW |
| CN107102337A (en) * | 2017-05-18 | 2017-08-29 | 哈尔滨工业大学 | The field-compensation measuring method of the active azimuthal measurement apparatus of trailing type laser half |
| CN107102337B (en) * | 2017-05-18 | 2020-02-11 | 哈尔滨工业大学 | Visual field compensation measuring method of follow-up laser semi-active azimuth measuring device |
| CN109373816A (en) * | 2018-11-12 | 2019-02-22 | 宋兵 | A kind of laser facula and echo tracking monitoring device |
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| CN101285666B (en) | 2011-04-13 |
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