CN102362140A - Light based projectile detection system for a virtual firearms training simulator - Google Patents

Light based projectile detection system for a virtual firearms training simulator Download PDF

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Publication number
CN102362140A
CN102362140A CN201080013474XA CN201080013474A CN102362140A CN 102362140 A CN102362140 A CN 102362140A CN 201080013474X A CN201080013474X A CN 201080013474XA CN 201080013474 A CN201080013474 A CN 201080013474A CN 102362140 A CN102362140 A CN 102362140A
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CN
China
Prior art keywords
screen
light source
light
projectile
gun
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Pending
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CN201080013474XA
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Chinese (zh)
Inventor
B·H·钟
B·R·威克路克
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Inveris Training Solutions Inc
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Meggitt Training Systems Inc
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Publication date
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Publication of CN102362140A publication Critical patent/CN102362140A/en
Pending legal-status Critical Current

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41JTARGETS; TARGET RANGES; BULLET CATCHERS
    • F41J5/00Target indicating systems; Target-hit or score detecting systems
    • F41J5/10Cinematographic hit-indicating systems
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41WEAPONS
    • F41GWEAPON SIGHTS; AIMING
    • F41G3/00Aiming or laying means
    • F41G3/26Teaching or practice apparatus for gun-aiming or gun-laying
    • F41G3/2616Teaching or practice apparatus for gun-aiming or gun-laying using a light emitting device
    • F41G3/2694Teaching or practice apparatus for gun-aiming or gun-laying using a light emitting device for simulating a target

Abstract

A light based projectile detection system for use with a firearm and a virtual firearms training simulator includes a self-sealing screen having a proximal side and a distal side. A scenario projector transmits a simulation onto the proximal side, and a light source faces the distal side. The light source selectively projects light onto the distal side of the screen when the firearm is shot, such that light from the source traverses the screen after contact by a projectile. A camera monitors the light traversing the aperture created by the projectile to determine and associate the position of impact and transmit that information to a scenario computer. The system may include an audio detection circuit to monitor the sound generated by the firearm and transmit a signal to a flash controller to cause the light source to illuminate. The screen will then re-seal around the hole so that the light no longer traverses the screen.

Description

The projectile detection system that is used for the virtual gun training simulators based on light
CROSS-REFERENCE TO RELATED PATENT
That the application requires to submit on March 23rd, 2009, from the priority of co-pending U.S. Provisional Application sequence number 61/162,498, this application is the application's basis and merges among the application by reference.
Technical field
The present invention relates to be used for confirm the actual coordinate of screen struck by projectile and with rum point and gun (firearms) training simulation system associated and method.
Background technology
Typical virtual gun training simulators use and simulated weapons training of students in the real life scene of simulation of the actual bullet that holds one's fire is operated weapon rightly.The training scene comprises video, digital cartoon, or has the requirement user fast and other virtual scenes of one or more conditions of making a response decidedly, such as hostage's scene, terrorist attacks or common malfeasance.This scene is projected on the screen by video projector, and wherein, this scene is controlled by simulation computer, and this simulation computer also detects aiming point when the student spurs the trigger of simulated weapons.Simulated weapons is equipped with at the trigger invisible or visible laser of " shooting " laser pulse when pulled.With this light pulse of machine testing mutually of simulation computer telecommunication, and to simulation computer transmission bump coordinate.Afterwards, simulation computer is through mating to confirm the hit location with respect to the scene of just being play with the coordinate system of camera and by the coordinate system of the image of projection or target.
The shortcoming of this system is, is used to imitate the laser pulse of weapon-shooting by common only generation of the simulated weapons of user's operation, but does not produce the real experiences to the user.That is to say that this simulated weapons does not have the sensation of actual gun usually, therefore do not produce the kick action usually, perhaps, credible thereby this simulation lacks the user for the user produces unpractiaca kick action.Therefore, the trainee who carries out a large amount of gunnery practices when actual gun of no use possibly be in a disadvantageous position when in combat environment, being asked to operate gun.
The modification of these virtual gun training simulators is the actual bullets that detect from real actual weapon-shooting.Because bullet is not light pulse, so above-described camera detection method perhaps seems and be impracticable.On the contrary, developed the optional feature of some interchangeable detection methods as the laser detection system of existing simulator.They comprise when the detection of bullet visual image of bullet during through sensor array, detection, or the detection in bullet hole when bullet passes the screen material such as paper of detection, the sound wave that generated by bullet during through sound transducer when bullet of the heat signature of bullet when bullet passes screen.Though these all methods can be worked to a certain extent, they all do not have in the parameter (such as low financial cost and have high accuracy) of expectation, to be performed.
Summary of the invention
This paper has described projectile detection system and the virtual gun training simulators based on light that are used for gun.Should comprise self sealss screen based on the projectile detection system of light with nearside and distally.The scene projecting apparatus is sent to simulation on the nearside, and light source (such as flash lamp) is towards the distally.Light source optionally projects to light on the distally of screen when gun are shot, thereby after the contact screen of projectile, travels through screen from the light of light source.Phase machine monitoring traversal is by the light in the aperture of projectile establishment, to confirm with related impingement position and to send this information to the scene computer.
This system can comprise audio detection circuit, and this audio detection circuit is used to monitor the signal that is used to make light illumination by the sound of gun generation and to the photoflash controller transmission.Afterwards, screen will seal in the hole on every side again, thereby light no longer travels through screen.
This system can additionally comprise the housing that is used for support screen, and wherein, light source is surrounded by this housing and screen is used to control the distribution from the light of light source.In this embodiment, reflecting plate (such as the paper that has paper tinsel on the side) can be installed in the housing diagonally, and wherein, light source is between reflecting plate and screen.This layout directly projects to light on the distally of screen and projects on the reflecting plate, and this will help equably light to be projected on the distally of screen.
Description of drawings
Fig. 1 is the block diagram based on the projectile detection system of light that is used for the virtual gun training simulators;
Fig. 2 is second block diagram based on the projectile detection system of light that is used for the virtual gun training simulators of Fig. 1, the figure shows the bump of projectile and screen; And
Fig. 3 is the perspective view that is incorporated into screen and the light assembling in the system shown in Fig. 1 and 2.
The specific embodiment
With reference to Fig. 1-3, show projectile detection system 10 based on light.Projectile detection system 10 based on light can be monitored the bump of projectile 18 on self sealss screen 14 by actual gun 16 shootings through employed similar laser detection system 12 in use and the above-described and commonly known in the art typical virtual gun training simulators based on laser.
Particularly, laser detection system 12 comprises all the scene projecting apparatus 20 and camera 22 with simulation or hit detection computer 24 telecommunications.Projecting apparatus 20 can comprise the image forming apparatus of any kind, and receives the simulated scenario from hit detection computer 24.To on one or more self sealss screens 14, play this scene after the projecting apparatus 20.On the contrary, camera 22 is monitored self sealss screen 14 to light or laser pulse, and this will be equivalent to the rum point of the projectile 18 that quilt is penetrated during the simulation that is projected on the screen 14.That is to say that laser detection system 12 will be during the simulated scenario that is projected on the screen 14, the real ball firing that spreads all over screen 14 monitoring weapons 16 is to confirm the impingement position of the projectile 18 (such as bullet or bullet) that quilt is penetrated.In case detect light pulse, camera 22 just sends the coordinate of bump to hit detection computer 24.This computer 24 comprise can calculate with about by the software of the relevant bump coordinate of the predetermined screen coordinate of the target of projection.
For the projectile impact position that utilizes laser detection system 12 to confirm on the screen 14, bullet 18 must generate light pulse at ad-hoc location L1 place, and at this ad-hoc location L1 place, bullet 18 clashes into screen 14 after by weapon 16 emissions.In order to generate this light pulse, the projection screen 14 of bullet detection system 10 is processed by self sealss elastomeric material (such as natural rubber or other similar substances well known in the art).Screen 14 has nearside 14p and opposed distally 14d.Nearside 14p is towards laser detection system 12 and the most approaching with laser detection system 12, and with the opposed distally 14d of nearside 14p towards light source 26 and the most approaching with light source 26.Light source 26 outputs can be by the wavelength of same camera 22 detected light 28.
(see figure 1) when L1 passes at the place screen 14 surperficial in the position in projectile 18, it will create hole H1 in the L1 place in the position, and this hole H1 has created the light valve (see figure 2) that allows light 28 to pass screen 14.After a period of time, the self-sealing material of screen 14 is closed hole H1 once more, so that camera 22 will no longer monitor any light 28 through screen 14.As a result, the of short duration exposure of the light 28 through the light valve H1 in the screen 14 is with the simulated light pulse.Because interim hole H1 is the position L1 of bullet 18 bumps, so it is identical to detect (as described above) with laser pulse by the precision of camera 22 monitoring through the light of light valve H1.Be used for any calibration algorithm that the coordinate system by the simulation of projection by projecting apparatus 20 projections with the coordinate system of camera 22 and hit detection computer 24 is complementary by hit detection computer 24, in native system, can use; That is to say; No matter be to use the laser pulse in the existing simulation system still in the training scene of native system, to launch real bullet 18, be used for the coordinate system of camera 22 all will be kept identical with the calibration algorithm that the coordinate system by the simulation of projection of hit detection computer 24 is complementary by simulation hit detection computer 24.
With the mutually integrated prototype of typical virtual miniweapon training simulators shown in Fig. 1.To the precision that contact and scene with bullet 18 are complementary, this prototype is tested, and the result is that precision is positioned at 1 to 3mm that this is with very similar based on the system of laser.The best mode that acquisition makes camera 22 can detect most of light 28 of the bullet 18 through screen is to use the xenon flash lamp 26 of the distally 14d of screen-oriented 14, the light source that this xenon flash lamp 26 is optionally illuminated rather than continuous.Selecting the reason of xenon flash lamp is its desirable characteristic, promptly has high light intensity and generates lower heat relatively simultaneously.Therefore, flash lamp triggering system 30 is connected to light source 26, to guarantee the appropriate sequential in the shooting incident time 28 of weapon 16.
Flash lamp triggering system 30 comprises the audio detection circuit 32 with flash lamp/trigger controller 34 telecommunications.Audio detection circuit 32 can be any known form in the prior art, such as comprising the micropkonic circuit that is used for audio power (sound wave) is converted to the signal of telecommunication.Similarly, flash lamp/trigger controller 34 can be the conventional microcontroller with audio detection circuit 32 and light source 26 telecommunications.Audio detection circuit 32 is positioned near the weapon 16, and the sound that is associated when initially shooting of detection and weapon 16.Thereby audio detection circuit 32 transmits the corresponding signal of being shot with weapon 16 of the moment to photoflash controller 34.
To use the signal that transmits from audio detection circuit 32 to come further to send to be used to the signal of row's light of the distally 14d that triggers screen-oriented 14 with the photoflash controller 34 of light source 26 telecommunications.Therefore, xenon flash lamp bubble 26 will be illuminated passing the akin moment of self sealss rubber front surface 14p with bullet 18.This realizes through making controller 34 open flashbulb 26 after postponing at the fixed time, can detect or see light 28 when guaranteeing that camera 22 exists shell hole H1 in screen 14.This time delay will be according to the speed of employed bullet 18 and gun 16 apart from the distance of screen 14 and change.
Please see Fig. 3, screen 14 can be installed in (side of housing 36 is removed to see screen 14) in housing or the framework 36.Housing 36 and screen 14 define the shell of ambient light source 26, thereby housing 36 will hold all light that produced by light source 26 with screen 14, pierced through by bullet 18 up to screen 14.Though show rectangular housing 36, as the user was desired, housing 36 may be implemented as other frameworks.In addition, reflecting plate 38 can be installed in the housing 36 diagonally and be positioned at light source 26 tops, thereby light source 26 is between reflecting plate 38 and screen 14.Reflecting plate 38 can be by processing at some other similar materials that approach most to have the scraps of paper of paper tinsel on the side of light source 26 or have high reflectance, with the light that reflects effectively and distribute and produced by light source 26.Therefore, light source 26 will make light directly project on screen 14 and the reflecting plate 38, equably light is projected on the distally 14d of screen 14.
As stated, development& testing use the prototype of xenon flash lamp bubble 26, its operating accuracy is positioned at 1 to 3mm.
Under the situation of the attribute of not knowing rubber screen 14 (such as elasticity and hardness), suppose to depend on the distance and the breakdown point that stretch in the screen 14, self is sealed (turning back to its original-shape) at screen 14 again and exist limited time quantum before.Further hypothesis to worst case is to be zero (that is to say that screen 14 is desirable material, can seal at once again) the self sealss time.In other words, screen 14 sealing at once after bullet or bullet 18 pass screen 14.Suppose that also the unique time that allows " light " 28 to pass screen 14 is when bullet 18 passes screen 14 (that is, when bullet 18 passed through, the initial apertures H1 that bullet 18 forms passed through to allow light 28 greater than bullet 18).For confirm many a spot of light 28 directly related with the speed of bullet 18 and " light valve " how long retain (that is, how long light can pass through screen 14 before screen 14 self sealss), should use following formula:
Light valve exist time=[speed of (distance that the thickness of the length+screen of bullet+screen stretches before initial breakthrough)/bullet]+[in case bullet 18 through after the time of sealing again], thereby confirmed following measurement result.
The minimum range of supposing the stretching, extension of screen 14 be bullet 18 diameter half the (but most probable is more) and depend on the speed of bullet 18 and the material properties of screen 14; Screen thickness is 5mm; In case the time of sealing again after bullet passes is 0 second (this depends on degree and screen material attribute that material is stretched to a certain extent), then carries out following calculating:
The ideal format of 9mm NATO ball is: the speed of bullet changes to 1300ft/s from 950ft/s, and bullet length is 0.610 " or 15.5mm.
5.56mm the typical specification of ball is: the speed of bullet is 3250ft/s, and bullet length is 19.3mm to 23mm.
So for the 9mm bullet, the minimum time that light valve exists is (15.5+5+4.5)/(1300*304.8)=63.1 μ s, and the minimum time that light valve exists for 5.56mm is (19.3+5+2.28)/(3250*304.8)=26.8 μ s.
In the charge-coupled device (CCD) of the camera 22 that is used for catching image, the transmission range that exists photosensitive area (epitaxial loayer of silicon) and form by shift register.Image is projected on the array of capacitors (photosensitive area) by camera lens, thereby makes the proportional electric charge of light intensity of each capacitor accumulation and that location.The time for exposure of light valve H1 is calculated as from 26.8 to 63.1 μ s (based on the calculating to above-described hypothesis) at least.Therefore, as long as the noise level in the ccd sensor is not more than charge level, just can when intensity is enough big, use ccd sensor to detect said electric charge.Because this is actually the bare minimum in the desirable perfect situation, so light valve H1 will be longer with the real time of opening, if not obvious longer words.
In addition, between the displacement of the data of exporting from register, exist the blanking time, in the meantime, ccd sensor can not stored charge.This blanking needs as much as possible little.Current camera 22 has the blanking time of about 2ms.The function that this is normally confirmed by camera manufacturer.For example, the current camera of being assessed to system 10 22 has the extraordinary blanking time between the frame of 35 μ s, and can be controlled lower.
This calculate to support such theory, i.e. the bullet 18 of the resealable rubber screen of the ability of the ccd sensor light source 26 that can allow its detection to pass to have backlit.
Use as rubber ball firing screen, some incandescent lamp bulbs of thought proof, have standard and hit the standard 100D-P (miniweapon virtual system) and the TV watch-dog of camera 22 and wave filter (being used to monitor the infrared filter of the light of expectation) and come the design above the initial testing.The dorsal part of screen 14 or distally 14d are with the bulb illumination of about two 100W, and its postmedian rubber screen is removed so that only anterior rubber screen separates light 26 with rifle.It is the same as sensing screen 14 as usually to hit camera 22, and the TV watch-dog is connected to and hits camera 22 hits camera 22 with " watching " output.This design is tested with the pistol (rounds) 18 of 9mm and 5.56mm.In all situation, the user can both visually see bullet 18 through after screen 14 will seal again before light 28 pass screen 14 at once.
5.56mm bullet 18 stayed pin hole really and be not similar to 9mm bullet 18 that kind and sealed fully again.One small pieces screen 14 has been torn off from dorsal part or distally 14d when the bullet 18 of 5.56mm is launched, and this takes place in the situation of 9mm.The moment low light level that appears on the TV watch-dog shows bullet 18 where passing from screen 14; This shows that detection can realize; And, can be designed for the system of the evanescent light pulse 28 that detection causes by passing of bullet 18 through adopting the appropriate combination of wave filter, camera, screen material and light source.
In case the bullet of 9mm has passed screen 14, also use high speed camera 22 to confirm approximately the opening the time of material (how long light valve H1 has opened).The frame per second of camera 22 is approximately per second 8000 frames.Hole H1 seems to have opened at least 4 frames or 4/8000 or 0.5ms, and this is than having grown 9 times to the worst scene institute result calculated.These test results show that also the equipment that proposed will operate as that kind of expectation.
The illustrative embodiments of the description like this through adopting " the projectile detection system that is used for the virtual gun training simulators " based on light; Those skilled in the art will recognize that; These descriptions in the disclosure only are exemplary, and in the scope of the present disclosure, can make various other replacement, reorganization and modifications.Therefore, the specific implementations shown in the present invention is not limited to here, but only limit appended claims.

Claims (18)

1. one kind is used for the projectile detection system based on light used with the gun of shooting projectile and the virtual gun training simulators with scene projecting apparatus, camera and scene computer, and this projectile detection system comprises:
The self sealss screen, this self sealss screen has nearside and distally, and said scene projecting apparatus is sent to simulation on the said nearside; And
Light source, said surface of light source are to the said distally of said screen, optionally light is projected on the said distally of said screen;
Wherein passing from the light of said light source will be by the said self sealss screen at the contact point place of projectile said phase machine monitoring, said and said self sealss screen.
2. projectile according to claim 1 detection system, this projectile detection system also comprises:
Be positioned near the audio detection circuit the said gun, said audio detection circuit has the loudspeaker of the shooting sound that is used to monitor said gun; And
Photoflash controller, this photoflash controller and said audio detection circuit and said light source telecommunication are to illuminate said light source corresponding to the shooting of said gun.
3. projectile according to claim 1 detection system, this projectile detection system also comprises the housing that supports said screen, said housing control is from the distribution of the light of the said light source of contiguous said screen.
4. projectile according to claim 3 detection system, wherein, said light source comprises xenon flash lamp.
5. projectile according to claim 3 detection system, this projectile detection system also comprises the reflecting plate that is installed in the said housing, said light source is between said reflecting plate and said screen.
6. training system that is used to detect by the bump coordinate of one or more projectiles of one or more gun shootings, this system comprises:
The self sealss screen, this self sealss screen has nearside and distally;
Light source, said surface of light source are to the said distally of said screen, optionally light is projected on the said distally of said screen;
Simulation computer is used for generating simulation;
With the projecting apparatus that said computer-electrical is communicated by letter, said projecting apparatus is play simulation on the said nearside of said screen;
Camera, this camera is communicated by letter with said computer-electrical, to detect the light pulse on the said screen;
When wherein passing said screen from the bump of light in said projectile of said light source, pass will by said phase machine monitoring, at the said self sealss screen at the contact point place of said projectile and said self sealss screen.
7. training system according to claim 6, this training system also comprises:
Be used to generate device corresponding to the signal of the shooting of said gun; And
Be used for controlling the device of the illumination of said light source corresponding to said signal.
8. training system according to claim 7, wherein, said signal generating apparatus comprises near the audio detection circuit that is positioned at the said gun, said audio detection circuit comprises the loudspeaker of the shooting sound that is used to monitor said gun.
9. training system according to claim 7; Wherein, Said control device comprises photoflash controller, and this photoflash controller and said audio detection circuit and said light source telecommunication are to illuminate said light source corresponding to the said signal that is generated by said audio detection circuit.
10. training system according to claim 7, this training system also comprises the housing that supports said screen, said housing control is from the distribution of the light of the said light source of contiguous said screen.
11. training system according to claim 10, this training system also comprises the reflecting plate that is installed in the said housing, and said light source is between said reflecting plate and said screen.
12. training system according to claim 7, wherein, said light source comprises xenon flash lamp.
13. one kind is used for confirming that this method may further comprise the steps by the method for the impingement position on the target of the projectile of gun emission:
A) the self sealss screen with nearside and distally is provided;
B) use generates target with the projecting apparatus of simulation computer telecommunication on the nearside of said screen;
C) use with the camera of said simulation computer telecommunication and monitor the light pulse on the said nearside of said screen;
D) optionally illuminate the said distally of said screen with light source;
E) when said screen is passed in said projectile, in said screen, generate light pulse with said light source; And
F) use the said camera that is connected to said simulation computer to write down the contact point of said projectile and said screen.
14. method according to claim 13, wherein, step d) is further comprising the steps of:
Generate with said projectile and launch corresponding signal from said gun; And
Send said signal to said light source, optionally to illuminate the said distally of said screen.
15. method according to claim 14, this method also comprise the step of using audio detection circuit to monitor the emission sound of said gun.
16. method according to claim 13, this method is further comprising the steps of:
In housing, support said screen and said light source, with the distribution of control from the light of the said light source of contiguous said screen.
17. method according to claim 16, this method is further comprising the steps of:
Reflecting plate with being installed in the said housing to distribute from the light of said light source along the said distally of said screen, and said light source is between said reflecting plate and said screen.
18. projectile according to claim 13 detection system is further comprising the steps of:
For said light source provides xenon flash lamp.
CN201080013474XA 2009-03-23 2010-03-23 Light based projectile detection system for a virtual firearms training simulator Pending CN102362140A (en)

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US16249809P 2009-03-23 2009-03-23
US61/162,498 2009-03-23
US12/729,981 2010-03-23
US12/729,981 US20100240015A1 (en) 2009-03-23 2010-03-23 Light Based Projectile Detection System for a Virtual Firearms Training Simulator
PCT/US2010/028331 WO2010111277A1 (en) 2009-03-23 2010-03-23 Light based projectile detection system for a virtual firearms training simulator

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EP (1) EP2411757A1 (en)
CN (1) CN102362140A (en)
AU (1) AU2010230058A1 (en)
CA (1) CA2756660A1 (en)
SG (1) SG174888A1 (en)
WO (1) WO2010111277A1 (en)

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SG174888A1 (en) 2011-11-28
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Application publication date: 20120222