CN207050843U - A kind of gun muzzle vibration test system - Google Patents

Abstract

The utility model discloses a kind of gun muzzle vibration test system, specifically including lower section optical path system, side optical path system and the collection of twin-line array ccd signal and processing unit, lower section optical path system includes the first laser line generator, the first cylindrical lens, the first plane mirror, the first optical filter, the first imaging system, the first line array CCD；Side optical path system includes：Second laser line generator, the second cylindrical lens, the second plane mirror, the second optical filter, the second imaging system, the second line array CCD；The utility model installs cannon gun muzzle simple, safe and suitable for different structure, especially is not easy to very much install in hyper firing rate tube cannon etc. or pastes the occasion of various measurement adminiclies.

Description

A kind of gun muzzle vibration test system

Technical field

It the utility model is related to a kind of barrage weapon gun muzzle vibration-testing apparatus and its method of testing, more particularly to a kind of big gun Mouth vibration test system and method for testing.

Background technology

In recent years, with the precision guided weapons such as guided missile penetration ability continuous improvement, to enter to precision guided weapon The effective defence of row, the barrage weapon for precision guided weapon short range defense also achieve tremendous development.More famous has The MK-15 " Phalanx " of Ray Thcon of the U.S., " goalkeeper " of Holland, " Metal Storm " of Australia, Russia " CADS-N-1 ", " Ka Shitan ", and the multitube small caliber piece short range such as " 632 " in China, " 732 ", " 1132 ", " land shield " are low Empty defensive weapon system, naval vessel is antiaircraft, the field such as important fixed target air-defense on vehicle-mounted motor-driven air defense and ground all It is widely used^[1].Combat duty is intercepted for effective short-range air-defense of fulfiling, the dispersion of barrage weapon is required and normal It is otherwise varied to advise weapon.Require that shooting point of impact is concentrated on the contrary, it is required that bullet is spread into certain area with traditional cannon Barrage, the barrage with certain area are advantageous to covering to attack the possible ballistic trajectory of target；Secondly it is intercepted to avoid the occurrence of Though guided missile through barrage but situation about not intercepted effectively yet, it is desirable to there is the bullet of certain dispersion density, i.e. barrage weapon Ball relatively uniform distribution in the area of fire, just can guarantee that the interception probability of success^[2].The dispersion situation of barrage weapon is shadow An important factor for ringing its interdiction capability.

Due to barrage weapon have bullet area of dispersion is big, short time transmitting bullet quantity is more, between front and rear bullet between Every the time is short the features such as, the dispersion contact method of testing such as common target plate is after the shooting of a large amount of bullets, it is difficult to effective again Differentiate shell hole, it is difficult to realize the reliable test spread to barrage arms projectiles^[3].With technology development and it is military compel It is essential and asks, the radio frequency of barrage weapon is also being improved constantly, and new problem is brought to dispersion measuring technology.For Validity Test Barrage arms projectiles are spread, and there is an urgent need to a kind of effectively target surface is big, measurement sensitivity and precision are high, simple and practical non-connects Touch method of testing, it is desirable to which test system must have higher measurement accuracy, sensitivity and high speed signal to receive and processing energy Power, while the test needs for the bullet that adapts at a high speed or fly at low speed, have the target surface of large area and are easy to target range installation and debugging.

Meanwhile during shooting, violent chemical action occurs in gun barrel for propellant powder, in complex external force and ring Under the effect of border, barrel will necessarily produce vibration, influence the dispersion of cannon.The osculum of barrage weapon generally use multitube form Footpath gatling gun, because radio frequency is fast, front and rear impact shock is influenced each other during shooting, and the Vibration Condition shot between different barrels is handed over Fork influences, and its gun muzzle Vibration Condition is more increasingly complex than conventional cannon.Test environment during due to artillery shooting is severe, vibrational excitation The features such as source is complicated, acceleration is big, Oscillation Amplitude and frequency are various, lacks effective gun muzzle vibration-testing means.

Since the nineties in last century, domestic and foreign scholars have carried out deep theory to the relation of gun vibration and dispersion Analysis and experimental study.Result of study shows that reel cage and barrel vibration can all have an impact to closeness, when shell goes out gun muzzle The dispersion of gun muzzle dynamic firing angle and cannon it is in close relations, be one of the major reason for influenceing cannon dispersion.Therefore, Complicated gun muzzle vibration is to influence one of major reason that barrage arms projectiles are spread.Research is tested the vibration of its gun muzzle and dissipated with projectile The method of testing of cloth, it can be vibrated for gun muzzle and provide practice support with dispersion correlation research.Study related art method The vibration characteristics of the distribution of barrage arms projectiles and gun muzzle is measured, technical support is provided for barrage weapon vibration control, for obtaining Rational barrage arms projectiles spread parameter, and it is significant to improve Weapon Combat efficiency.Big gun during to barrage weapon-shooting Mouth vibration is spread with bullet to be tested, and analysis gun muzzle vibration is set to the influence degree of bullet distribution to barrage armament systems Meter also has directive significance with linguistic term.

Gun muzzle vibration has a major impact to dispersion, is always target range because test environment is severe, Vibration Condition is complicated One of Research Challenges of testing field, existing means of testing mainly have following several.

(1) accelerometer

Accelerometer measures method needs to use the aided measurement devices such as gun muzzle hoop, by aided measurement device by sensor It is fixed on gun muzzle, conditioned circuit measures the voltage of the change of reaction vibration acceleration, then carries out signal transacting, you can Obtain the vibration parameters of gun muzzle.

(2) photoelectric displacement follower

Photoelectric displacement follower measuring principle is mainly realized to mesh by tracking the interface of black and white mark on target Mark the measurement of vibration.The motion of black and white interface causes the imaging of image dissector to change, caused voltage change and object position It is directly proportional to move change, the misalignment of target in one direction can be measured.

(3) eddy current displacement sensor

Gun barrel is vibrated in the induction range of its inductance coil, and induced electricity is produced due to electromagnetic induction principle There is certain relation in the parameter of buckling, induced voltage and barrel vibration, so as to obtain gun vibration parameter.

Due to the limitation in principle, the range of current vortex sensor is determined by the sectional area of its induction coil, to ensure Coil correctly responds the vibration displacement of barrel, and tested gun barrel section should be bigger than sensor section diameter more than twice, Installed in test process relatively difficult.And the big sensor requirements reflecting surface of range, with regard to bigger, such sensor measures Be exactly that the vibration information of whole reflecting surface is averaged, rather than the vibrational state in a single point region, so must be used during measurement The sensor of small bore, press close to barrel test, and so in Canon launching, the displacement of gun tube, which is easily patted, arrives sensor, prevents It is big to protect difficulty.In addition, ground vibration caused by barrel recoil, will directly affect the ground support of fixed sensor, causes to measure Failure.

(4) high-speed photography

High-speed photography equipment mainly includes high-speed CCD sensor, high-speed processing circuits and optical device.By analyzing gun muzzle Video image, extract gun muzzle movable information, or video file resolved into multiple image, entered using digital image processing techniques Row extraction.Due to lacking effective vibration performance appraisal procedure, its measurement accuracy is difficult to ensure that.And in order to take into account high-resolution With high shooting speed, the usual very little of visual field of high-speed photography camera, there is strict demand to the width spacing of gun muzzle athletic posture, such as APX-RS types high speed camera is maximum no more than 100mm.And high-speed photography equipment uses high speed face array CCD, to ensure scanning speed Degree, it causes measurement accuracy low as number of elements is generally less, and during high-speed photography survey running fire artillery shooting gun muzzle vibration processes, Need the amount of images that gathers very huge, image processing process is complicated, and result influences measuring accuracy.

(5) gun muzzle method for testing vibration based on PSD displacement transducers

Speculum is fixed on gun muzzle position by aided measurement device, and laser, PSD sensors and camera lens are at gun muzzle rear The angled arrangement in relative reflection mirror plane.During measurement, laser sends spot light and is radiated in mirror plane, speculum With the vibration of gun muzzle, by movement of the dynamic respons of gun muzzle to spot light on PSD surfaces, PSD is produced and launching spot position Corresponding current signal, then after the processing of PSD sensor signals process plate, with reference to gun muzzle dynamic firing angle and PSD hot spot coordinates Between detection model, you can obtain the measurement result of gun muzzle Vibration Parameter.

(6) CCD laser triangle displacement sensors

CCD laser displacement sensors are mainly made up of laser, optical lens group and CCD.Reflection light point on CCD into Picture, picture point responds the Vibration Condition of speculum, and speculum vibrates with gun muzzle.Based on the spot displacement variable quantity of CCD outputs, and With reference to the vibration displacement situation of mathematical modeling can measurement target between the two.

The above analysis can be seen that artillery shooting site environment is severe, and the complicated factor of gun muzzle vibration measurement is more, energy Meet that the means of testing of barrage weapon gun muzzle vibration lacks.The shortcomings that existing gun muzzle vibration-testing means are present mainly has：

(1) the method for testing measuring principle of touch sensor is simple, easy to operate, but can change gun muzzle vibrational state, Influenceed particularly with small caliber piece gun muzzle vibration-testing big.Because barrel vibration frequency is various, the different impacts of different frequency Vibration is also easily damaged the sensor in non-corresponding range section, and for tube cannon, touch sensor installation difficulty is very Greatly.

(2) non-contact measurement.The problem of existing contactless measurement is present, which is summed up, mainly to be had：

1) measurement distance is excessively near, easily by barrel recoil or gun muzzle impact failure；

2) interference performance such as anti-muzzle flash and smog is poor；

3) can not tracking measurement gun muzzle two-dimension vibration, later data processing is difficult；

4) need to install subsidiary equipment additional on barrel, influence the vibration characteristics of cannon in itself, and for using tube For the barrage weapon of form, it is difficult to complete installation.

Utility model content

The purpose of this utility model is based on line laser technology, CCD imaging techniques etc., research line laser beam gun muzzle into As and with gun muzzle vibration characteristic, with reference to area array CCD and Output Signal of Linear CCD's frequency feature, twin-line array CCD detection lines are proposed Laser gun muzzle method for testing vibration；Principle；Analysis measurement principle, analysis of test system layout, studies associated arguments optical projection Transformational relation, systematic parameter Synthetical Optimization is carried out, derive test result conversion mathematical modeling, realize muzzle vibration displacement Two dimension solves.

The technical solution of the utility model is the provision of a kind of gun muzzle vibration test system, specifically includes lower section measurement light Road system, side optical path system and the collection of twin-line array ccd signal and processing unit, it is characterised in that：

Lower section optical path system includes the first laser line generator, the first cylindrical lens, the first plane mirror, the first optical filtering Piece, the first imaging system, the first line array CCD；

Lower section optical path system is arranged in immediately below barrel to be measured, and the first laser line generator is being installed close to gun muzzle side, First cylindrical lens is installed above the first laser line generator, the laser of the first laser line generator transmitting passes through the first cylindrical lens First Line lasing area is formed afterwards, and is irradiated on barrel to be measured, forms First Line laser projection, in this process line laser beam Optical plane the first plane mirror should be then installed perpendicular to the radial direction vertical cross-section of barrel, for the reflected beams project；

First plane mirror is installed in the right side of the first laser line generator, while the first plane mirror and barrel to be measured It is angled so that the picture after reflection can be delivered to the first imaging system；

First optical filter is placed between the first plane mirror and the camera lens of the first imaging system；Then in the first optical filter Rear the first imaging system and the first line array CCD are installed successively；

Side optical path system includes：Second laser line generator, the second cylindrical lens, the second plane mirror, the second filter Mating plate, the second imaging system, the second line array CCD；

The second laser line generator is being installed close to gun muzzle side, the second cylindrical lens is installed at the rear of the second laser line generator, The laser of second laser line generator transmitting forms the second line laser face after passing through the second cylindrical lens, and is irradiated on barrel to be measured, Formed the second line laser projection, in this process the optical plane of line laser beam should perpendicular to the axial horizontal cross-section of barrel, Second plane mirror is then installed, projected for the reflected beams；

Second plane mirror is installed on the right side of the second laser line generator, at the same the second plane mirror and barrel to be measured into Certain angle so that the picture after reflection can be delivered to the second imaging system, and the second optical filter is placed on the second plane mirror And second imaging system camera lens between, the second imaging system and the second linear array are then installed successively at the rear of the second optical filter CCD；

Further, in addition to synchronous circuit, its effect are exactly when barrel to be measured is activated to vibrate, and make lower section Optical path system and side optical path system can be tested simultaneously, and passed the signal along to twin-line array ccd signal and adopted In collection and processing unit, and then realize the synchro measure of gun muzzle vibration.

Further, connection line on the first line array CCD, the first line array CCD is made to gather and handle with twin-line array ccd signal Device connects the collection and processing for measure signal；Connection line on second line array CCD, make the second line array CCD and twin-line array CCD Signal acquiring and processings device connects, and measure the collection and processing of signal.

The beneficial effects of the utility model are：

(1) using projection of the laser on barrel as imaging object, laser light wave monochromaticjty is good, energy is concentrated, and is easy to filter Except ambient light interferences such as gun muzzle astigmatism, signal to noise ratio is improved；

(2) line laser is a laser plane in three dimensions, and the line laser beam with certain length can ensure to penetrate When hitting, gun muzzle is during high vibration all the time in laser light curtain；

(3) scan frequency of line array CCD is higher, can use the more CCD devices of pixel element, can realize very high frequency Rate and displacement measurement accuracy；

(4) without adding subtest equipment on barrel, the vibration characteristics of gun muzzle in itself is not changed.Installation is simple, safety Property high and suitable for different structure cannon gun muzzle, be especially not easy to very much install or paste respectively in hyper firing rate tube cannon etc. The occasion of kind measurement adminicle.

Brief description of the drawings

Fig. 1 is vibration displacement test philosophy schematic diagram in laser emitting direction along single linear CCD cannon；

Fig. 2 is twin-line array CCD detection lines laser test system composition figure substantially；

Fig. 3 is twin-line array CCD detection line laser gun muzzles vibration test system layout front view；

Fig. 4 is twin-line array CCD detection line laser gun muzzle vibration test system schematic layout patterns；

Fig. 5 is twin-line array CCD detection line laser gun muzzles vibration test system layout side view

Fig. 6 is the Vibration Condition figure in the online laser light curtain of gun muzzle in barrel section；

Fig. 7 is that line laser is projecting situation map in barrel in gun muzzle vibration processes.

Wherein：1- barrels to be measured, 2- gun muzzles, the projection of 3- line lasers, 4- laser line generators, 5- cylindrical lenses, 6- line lasers face, 7- plane mirrors, 8- optical filters, 9- imaging systems, 10- line array CCDs, 11- single linear CCD Signal acquiring and processings device, Optical path system, 13- sides optical path system, the laser line generators of 14- first, the cylindrical lenses of 15- first, 16- below 12- First Line lasing area, 17- First Lines laser projection, the plane mirrors of 18- first, the optical filters of 19- first, the imagings of 20- first system System, the line array CCDs of 21- first, 22- synchronous circuits, 23- twin-line arrays ccd signal collection with processing unit, the laser line generators of 24- second, The cylindrical lenses of 25- second, the second line lasers of 26- face, the projection of the line lasers of 27- second, the plane mirrors of 28- second, 29- second Optical filter, the imaging systems of 30- second, the line array CCDs of 31- second, 32- earthquake isolating equipments.

Embodiment

The technical scheme of the utility model is described in detail below with reference to accompanying drawing 1-7.

Herein in order to effectively illustrate concrete function of the present utility model, single linear CCD cannon is gone out along line laser first Penetrate direction vibration displacement test device composition and operation principle illustrates.

As shown in figure 1, the laser emitting direction vibration displacement test device along single linear CCD cannon, in barrel 1 to be measured Side selects correct position installation laser line generator 4 at gun muzzle 2, in order to meet that testing requirement and later stage calculate needs, In installation process the axis of laser 4 should be located in the horizontal plane of barrel axial direction, and with barrel radial direction vertical direction Plane is vertical, then places a cylindrical lens 5 in the front of laser line generator 4, for forming the triangular laser face 6 of a line style, when When it is irradiated on barrel 1 to be measured, the light beam projecting 3 of one of high brightness can be formed on the surface of barrel 1 to be measured.Then installation one is flat Face speculum 7, projected for the reflected beams.In orientation shown in Fig. 1, the plane mirror 7 is installed in laser line generator 4 Right side, while the plane mirror 7 and barrel angled 1 so that the picture after reflection can be delivered to imaging system 9.And An optical filter 8 is placed between plane mirror 7 and the camera lens of imaging system 9, for filtering out available light, with reduce it is extraneous because Element influence to caused by measurement result.Then imaging system 9 and line array CCD 10 are installed successively at the rear of optical filter 8, its center line Battle array CCD10 needs are angled with barrel, and making pixel line, this is to carry out data point to be follow-up perpendicular to the picture of line laser beam 3 During analysis, the mathematical modeling of data conversion between measuring coordinate value and actual coordinate value can be set up.Final online battle array CCD10 Upper connection line, the collection, transmission and place of signal are realized with the formation of single linear CCD Signal acquiring and processing device 11 signalling channel Reason.So far laser emitting direction vibration displacement test device just builds completion along a complete single linear CCD cannon.

When laser emitting direction vibration displacement test device works along single linear CCD cannon, laser 4 is saturating by cylinder Mirror 5 forms the triangular laser face 6 of line style, and the line laser face 6 is irradiated on tested barrel 1, is formed in target surface highlighted together The light beam projecting 3 of degree, the light beam projecting 3 can appear in the optical lens of imaging system 9 by the reflection of plane mirror 7 On, changed by imaging system 9 and be imaged and then on linear array CCD10.And according to the performance characteristics of line array CCD 10, when by outer When boundary's optical signalling stimulates, illuminated position can produce corresponding signal, and then the signal will be adopted by single linear CCD signal Collection and processing unit 11 are delivered to host computer up, realize the acquisition of data.By the system, light beam projecting 3 can be obtained The initial position of picture, when barrel 1 to be measured produces vibration, the position of gun muzzle 2 changes so that sends out therewith the position of light beam projecting 3 Raw to change, caused signal also changes on corresponding line array CCD 10, and passes through single linear CCD Signal sampling and processing Device 11 is converted to intuitively data.During due to test system building in the early stage, the placement location of test device has been manually set And angle, therefore coordinate system can be each established on barrel 1 to be measured and the plane of line array CCD 10, pass through barrel 1 to be measured and linear array Position relationship between CCD10 planes, the conversion mathematical modeling between coordinate on two coordinate systems can be obtained, and then by line The conversion of image plane coordinate value on battle array CCD10, tries to achieve the displacement actually occurred when barrel 1 to be measured vibrates, so as to reach test mesh 's.

Cannon is in shooting course, and cannon mainly does the horizontal, disturbance of vertical direction, and the bending of barrel

It can be ignored relative to horizontal and vertical disturbance.Gun muzzle vibration can be regarded as barrel using breech as the center of circle, Disturbance on the circle of a length of radius of barrel, therefore area array CCD can be selected to be measured as test device, and then obtain gun muzzle Plane vibration situation.But by CCD performance characteristics it is recognised that line array CCD compared to area array CCD there is higher frequency to ring Should, and in the equally long testing time, subsequently need data volume to be processed much less, therefore imitated using the test of line array CCD Fruit can be more preferable.But because line array CCD can only export one-dimensional signal, therefore line array CCD can only survey phase in the online laser plane of barrel Motion for Laser emission direction.

Already mentioned above, gun muzzle vibration can be regarded as barrel using breech as the center of circle, on the circle of a length of radius of barrel Disturbance, now, this disturbance can be decomposed in horizontal, vertical both direction, therefore in the embodiment, utilize two lines Battle array CCD tests misalignment of the gun muzzle in horizontal and vertical directions, and a line array CCD imaging system is arranged in into cannon Side, the lower section of the cannon of another arrangement, both are carried out with time synchronized, form twin-line array CCD test systems.

The layout of twin-line array CCD detection line laser test systems is illustrated below, because single width view can not understand Intuitively show whole layout, therefore employ the mode of three-view diagram herein, to twin-line array CCD detection line laser test systems Space layout illustrate.Herein it should be noted that：Front view is built on the basis of the axially vertical plane of barrel, is bowed View is built on the basis of the horizontal plane of barrel axial direction, what side view was built on the basis of gun muzzle section.

Due to as viewed from front view direction, side optical path system 13 is placed exactly in the front of barrel 1 to be measured, if by its table Reveal and, view can be made to seem excessively in disorder, therefore side optical path system 13 is simplified, therefore, Fig. 3 is mainly presented The composition of lower section optical path system 12.Because lower section optical path system 12 is located at the lower section of barrel 1 to be measured, it is not easy to scheming In show, therefore lower section optical path system 12 is simplified, the figure mainly enters to side optical path system 13 Row is introduced.It can be seen that side optical path system 13 is arranged in the side of barrel 1 to be measured, positioned at gun tube as viewed from depression angle Front.

As Figure 2-3, twin-line array CCD detection lines laser gun muzzle vibration test system, including lower section optical path system 12nd, side optical path system 13 and the collection of twin-line array ccd signal and processing unit 23；

Lower section optical path system 12 includes：First laser line generator 14, the first cylindrical lens 15, the first plane mirror 18th, the first optical filter 19, the first imaging system 20, the first linear array CCD21, it is arranged in immediately below barrel 1 to be measured, close to big gun The first laser line generator 14 is installed in 2 sides of mouth, is provided with the first cylindrical lens 15 in the top of the first laser line generator 14, First Line swashs The laser that light device 14 is launched forms First Line lasing area 16 after the first cylindrical lens 15, and is irradiated on barrel 1 to be measured, shape Into First Line laser projection 17, in this process the optical plane of line laser beam should perpendicular to the radial direction vertical cross-section of barrel, First plane mirror 18 is then installed, projected for the reflected beams.

In orientation shown in Fig. 3, the first plane mirror 18 is installed in the right side of the first laser line generator 14, while first Plane mirror 18 and barrel 1 to be measured are angled so that the picture after reflection can be delivered to the first imaging system 20.

First optical filter 19 is placed between the first plane mirror 18 and the camera lens of the first imaging system 20, for filtering out certainly Right light, influenceed with reducing extraneous factor to caused by measurement result.Then is installed successively at the rear of the first optical filter 19 One imaging system 20 and the first linear array CCD21, the first linear array CCD21 will be with 1 angled α of barrel to be measured, while First Lines Battle array CCD21 pixel line should perpendicular to the picture of First Line laser projection 17, this be in order to subsequently carry out data analysis when, energy Enough set up the mathematical modeling of data conversion between measuring coordinate value and actual coordinate value.

The finally connection line on the first linear array CCD21, it is gathered with twin-line array ccd signal and be connected with processing unit 23 Measure the collection and processing of signal, while the data that measure of side optical path system 13 are also by being transferred to twin-line array In ccd signal collection and processing unit 23, the wherein effect of synchronous circuit 22 is exactly to be activated to vibrate in barrel 1 to be measured When, lower section optical path system 12 and side optical path system 13 is tested simultaneously, and pass the signal along to double In Linear Array CCD Signal collection and processing unit 23, and then realize the synchro measure that gun muzzle 2 vibrates.

As shown in figure 4, side optical path system 13 is flat including the second laser line generator 24, the second cylindrical lens 25, second Face speculum 28, the second optical filter 29, the second imaging system 30, the second line array CCD 31, it is arranged in the side of barrel 1 to be measured.

Second laser line generator 24 is being installed close to the side of gun muzzle 2, second cylinder is installed at the rear of the second laser line generator 24 Lens 25, the laser that the second laser line generator 24 is launched forms the second line laser face 26 after passing through the second cylindrical lens 25, and irradiates Onto barrel 1 to be measured, the second line laser projection 27 is formed, the optical plane of line laser beam should be perpendicular to barrel in this process Axial horizontal cross-section, the second plane mirror 28 is then installed, for the reflected beams project.

In orientation shown in Fig. 4, the second plane mirror 28 is installed in the right side of the second laser line generator 24, while second is flat Face speculum 28 and barrel 1 to be measured are angled so that the picture after reflection can be delivered to the second imaging system 30, the second filter Mating plate 29 is placed between the second plane mirror 28 and the camera lens of the second imaging system 30, for filtering out available light, to reduce Extraneous factor influences to caused by measurement result.Then the He of second imaging system 30 is installed successively at the rear of the second optical filter 29 Second line array CCD 31, the second line array CCD 31 will be with 1 angled α of barrel to be measured, while the pixel lines of the second line array CCD 31 27 picture should be projected perpendicular to the second line laser, this be for it is follow-up carry out data analysis when, can set up measuring coordinate value and The mathematical modeling of data conversion between actual coordinate value.The finally connection line on the second line array CCD 31, makes itself and twin-line array CCD Signal acquiring and processings device 23 connects, and measure the collection and processing of signal, and then realizes the survey that gun muzzle 2 vibrates Amount.

According to line laser in gun muzzle projection, the position relationship between line array CCD imaging system and line laser plane three, Founding mathematical models, you can try to achieve muzzle vibration displacement.

Observed as shown in figure 5, being looked to gun muzzle cross-wise direction, mainly show lower section optical path system in this figure 12nd, the spatial relation between side optical path system 13 and barrel to be measured.It can be seen that lower section optical path system 12 Positioned at the underface of barrel 1 to be measured, side optical path system 13 is located at the front-right of barrel 1 to be measured, two systems in Figure 5 Lower section is equipped with earthquake isolating equipment 32, in case in shooting, caused earth shock impacts to test result, the two and two-wire The 23 connected synchro measure realized in measurement process of battle array CCD Signal acquiring and processings device.

During gun vibration, misalignment of the gun muzzle 1 in laser light curtain is as shown in Figure 6.With the vertical face of barrel section Direction is Y-axis, establishes rectangular coordinate system OXY by X-axis of barrel section horizontal direction, circle P is cannon initial position, and circle P ' is to shake Gun muzzle position after dynamic, point J is line laser launch point, the light curtain of its transmitting as shown in phantom in FIG., the online laser light curtain of gun muzzle One section of light can be intercepted in region.

From the rectilinear propagation law of light, line laser beam is equal to gun muzzle in the length for being projected in Y direction of gun muzzle Diameter.Then PA is gun muzzle horizontal direction offset, and P ' A are gun muzzle vertical direction offset.When line laser light curtain region is in gun muzzle When the overlay length at place is more than the maximum position up and down of gun muzzle vibration, it is ensured that gun muzzle is in vibration processes, on barrel all the time There is complete line laser beam to project.

Gun muzzle on the premise of barrel Bending Influence is not considered, can regard gun muzzle as with big gun in perturbation process is shot Tail is origin, and gun barrel length is to do cambered surface motion on the part circle of radius.Because the position of line laser is integrally fixed at ground , laser line generator and line laser beam position immobilize during artillery shooting.Projection of the horizontal direction line laser on barrel Situation is as shown in Fig. 7.

Wherein PA, PA ' are two positions before and after barrel vibration, and dotted line circular arc is muzzle vibration displacement track, line laser Beam J hands over gun barrel in B, B ' at 2 points, it is known that, line laser beam is in the front and rear diverse location of gun muzzle vibration, but all the time in line laser Plane where beam.In test process, BP length can be measured in advance, then BB ' value is measured by test system, then level side To dynamic firing angle can be expressed as

So as to realize the solution to horizontal direction dynamic firing angle, asking for vertical direction dynamic firing angle can also be similarly carried out Solution.

This example provides a kind of method of testing of gun muzzle vibration test system, specifically include：

Step 1, the installation for carrying out vibration abatement 32；

The step mainly serves for ensuring twin-line array CCD detection line laser gun muzzle vibration test systems will not in test process Influenceed by external shock, deviation occurs in test result；

Step 2, the face position below barrel 1 to be measured, first laser line generator 14 is installed close to the side of gun muzzle 2, for giving birth to Into line laser；First cylindrical lens 15 is installed above the first laser line generator 14 to be used to generate First Line lasing area 16, when first Line laser face 16 can form First Line laser projection 17 when being irradiated on barrel 1 to be measured at gun muzzle 2；In the first laser line generator The first plane mirror 18 is installed in 14 rear positions, for being reflected in the First Line laser projection 17 formed on barrel 1 to be measured； Formed after the reflection of first plane mirror 18 corresponding to light and the first optical filter 19 is installed in light path；Pacify at the rear of first optical filter 19 The first imaging system 20 is filled, makes the first optical filter of camera lens face 19 of the first imaging system 20, for the first plane mirror The imaging of 18 reflection lights；

First linear array CCD21 is installed at the rear of the first imaging system 20, passed over for receiving the first imaging system 20 Picture；

In the step, it should be noted that the first linear array CCD21 need to be with the angled α of barrel, and this is in order in the later stage Prepared to measuring respective coordinates value progress numerical value conversion on coordinate value and barrel to be measured 1 on the first linear array CCD21.So far lower section The installation of optical path system 12, its topology layout are as shown in Figure 4；

Step 3, in the side face position of barrel 1 to be measured, second laser line generator 24 is installed close to the side of gun muzzle 2, for giving birth to Into line laser；Second cylindrical lens 25 is installed in the front of the second laser line generator 24, for generating the second line laser face 26, when second Line laser face 26 can form the second line laser projection 27 at gun muzzle 2 when being irradiated on barrel 1 to be measured；

Second plane mirror 28 is installed in the rear correct position of the second laser line generator 24, for being reflected in barrel 1 to be measured The second line laser projection 27 of upper formation；Formed after the reflection of the second plane mirror 28 and install second in light path corresponding to light The second imaging system 30 is installed at optical filter 29, the rear of the second optical filter 29, make the camera lens face second of the second imaging system 30 into As system 30, for the imaging to the reflection light of the second plane mirror 28；Second is installed at the rear of the second plane mirror 28 Line array CCD 31, the picture passed over for connecing the second imaging system 30；

In this step, it should be noted that the second line array CCD 31 need to be with the angled α of barrel, and this is in order to rear Phase changes so far side of preparing to measuring respective coordinates value progress numerical value on coordinate value and barrel to be measured 1 on the second line array CCD 31 The square installation of optical path system 13, its topology layout are as shown in Figure 5；

Step 4, the collection of twin-line array ccd signal and the installation of processing unit 23 are carried out, by circuit by the first linear array CCD21 Gather with twin-line array ccd signal with the second line array CCD 31 and be attached with processing unit 23；

Step 5, switch on power, whole test system is debugged, it is met presumptive test demand；Debugging was completed Afterwards, test system is in running status, barrel 1 to be measured is applied and encouraged, is tested；

Step 6, it is acquired, transmitted with handling to measuring signal in test process, obtains First Line laser projection respectively 17 on the first linear array CCD21 the coordinate of picture and the second line laser project the coordinate of picture on 27 second line array CCDs 31；

Step 7, the Treatment Analysis for carrying out data measured, due to the first linear array CCD21 and the second line array CCD 31 image plane All formed an angle α with barrel 1 to be measured, therefore can be each on barrel 1 to be measured, the first linear array CCD21 and the second line array CCD 31 A coordinate system is established, then will measure signal on the first linear array CCD21 and the second line array CCD 31 is changed into coordinate value, then By coordinate conversion matrix, the coordinate value on the first linear array CCD21 and the second line array CCD 31 is converted to the coordinate value of gun muzzle.

And evolution relation of the gun muzzle in vibration processes can obtain from Fig. 6 and Fig. 7, so as to set up big gun Relational expression between mouthful diverse location coordinate value, brings the coordinate value for measuring different gun muzzle positions into relational expression, so as in the hope of Shift value both horizontally and vertically when gun muzzle vibrates, and dynamic firing angle horizontally and vertically are obtained, is entered And the plane vibration situation in its section of gun muzzle is determined, realize the measurement to gun muzzle vibration.

Above-mentioned flow, realizes the installation of right twin-line array CCD detection lines laser gun muzzle vibration test system, and then can lead to Cross the test system and realize the test to gun muzzle vibration.

Technical scheme provided by the utility model is described in detail above, it will be appreciated that, these are retouched State and only principle and embodiment are set forth with specific example, be not used for limiting answering for the utility model patent With.The protection domain of the utility model patent may include do not departing from the utility model patent by appended claims Various modifications, remodeling and the equivalents made in the case of protection domain and spirit for utility model patent.

Claims (3)

1. a kind of gun muzzle vibration test system, specifically include lower section optical path system (12), side optical path system (13) With the collection of twin-line array ccd signal and processing unit (23), it is characterised in that：

Lower section optical path system (12) includes the first laser line generator (14), the first cylindrical lens (15), the first plane mirror (18), the first optical filter (19), the first imaging system (20), the first line array CCD (21)；

Lower section optical path system (12) is arranged in immediately below barrel to be measured (1), is swashed close to gun muzzle (2) side installation First Line Light device (14), the first cylindrical lens (15), the first laser line generator (14) transmitting are installed above the first laser line generator (14) Laser First Line lasing area (16) is formed after the first cylindrical lens (15), and be irradiated on barrel to be measured (1), form the One line laser projects (17), and the optical plane of line laser beam should connect perpendicular to the radial direction vertical cross-section of barrel in this process The first plane mirror of installation (18), is projected for the reflected beams；

First plane mirror (18) is installed in the right side of the first laser line generator (14), at the same the first plane mirror (18) with Barrel (1) to be measured is angled so that the picture after reflection can be delivered to the first imaging system (20)；

First optical filter (19) is placed between the first plane mirror (18) and the camera lens of the first imaging system (20)；Then The rear of one optical filter (19) is installed by the first imaging system (20) and the first line array CCD (21) successively；

Side optical path system (13) includes：Second laser line generator (24), the second cylindrical lens (25), the second plane mirror (28), the second optical filter (29), the second imaging system (30), the second line array CCD (31)；

The second laser line generator (24) is being installed close to gun muzzle (2) side, the second post is installed at the rear of the second laser line generator (24) Face lens (25), the laser of the second laser line generator (24) transmitting form the second line laser face afterwards through the second cylindrical lens (25) (26), and it is irradiated on barrel to be measured (1), forms the second line laser projection (27)；

Second plane mirror (28) is installed on the right side of the second laser line generator (24), while the second plane mirror (28) is with treating It is angled to survey barrel (1) so that the picture after reflection can be delivered to the second imaging system (30), and the second optical filter (29) is put Put between the second plane mirror (28) and the camera lens of the second imaging system (30), then the rear of the second optical filter (29) according to The second imaging system of secondary installation (30) and the second line array CCD (31).

2. gun muzzle vibration test system according to claim 1, it is characterised in that：Also include synchronous circuit (22), it is made With being exactly when barrel to be measured (1) is activated to vibrate, make lower section optical path system (12) and side optical path system System (13) can be tested simultaneously, and pass the signal along in the collection of twin-line array ccd signal and processing unit (23), Jin Ershi The synchro measure of existing gun muzzle (2) vibration.

3. gun muzzle vibration test system according to claim 1, it is characterised in that：Connecting line on first line array CCD (21) Road, make the first line array CCD (21) and twin-line array ccd signal gather be connected with processing unit (23) collection that carries out measuring signal and Processing；Connection line on second line array CCD (31), make the second line array CCD (31) and the collection of twin-line array ccd signal and processing unit (23) connect, measure the collection and processing of signal.