CN107655368A - A kind of non-contact air big gun speed measuring equipment and its method - Google Patents
A kind of non-contact air big gun speed measuring equipment and its method Download PDFInfo
- Publication number
- CN107655368A CN107655368A CN201711019863.3A CN201711019863A CN107655368A CN 107655368 A CN107655368 A CN 107655368A CN 201711019863 A CN201711019863 A CN 201711019863A CN 107655368 A CN107655368 A CN 107655368A
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- bullet
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- fluorescent dye
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- 238000012360 testing method Methods 0.000 claims abstract description 30
- 238000005259 measurement Methods 0.000 claims abstract description 14
- 238000003780 insertion Methods 0.000 claims abstract description 5
- 230000037431 insertion Effects 0.000 claims abstract description 5
- 239000007850 fluorescent dye Substances 0.000 claims description 56
- 238000001514 detection method Methods 0.000 claims description 45
- 238000006243 chemical reaction Methods 0.000 claims description 31
- 239000013307 optical fiber Substances 0.000 claims description 25
- 239000000523 sample Substances 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 16
- 230000005284 excitation Effects 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 12
- 238000013459 approach Methods 0.000 claims description 11
- 238000012545 processing Methods 0.000 claims description 9
- 239000000835 fiber Substances 0.000 claims description 7
- 239000000975 dye Substances 0.000 claims description 4
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
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- 238000007906 compression Methods 0.000 claims description 3
- 238000002347 injection Methods 0.000 claims description 3
- 239000007924 injection Substances 0.000 claims description 3
- 239000008188 pellet Substances 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- 238000010586 diagram Methods 0.000 description 5
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- HSHNITRMYYLLCV-UHFFFAOYSA-N 4-methylumbelliferone Chemical compound C1=C(O)C=CC2=C1OC(=O)C=C2C HSHNITRMYYLLCV-UHFFFAOYSA-N 0.000 description 2
- KPKZJLCSROULON-QKGLWVMZSA-N Phalloidin Chemical compound N1C(=O)[C@@H]([C@@H](O)C)NC(=O)[C@H](C)NC(=O)[C@H](C[C@@](C)(O)CO)NC(=O)[C@H](C2)NC(=O)[C@H](C)NC(=O)[C@@H]3C[C@H](O)CN3C(=O)[C@@H]1CSC1=C2C2=CC=CC=C2N1 KPKZJLCSROULON-QKGLWVMZSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
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- AUUIARVPJHGTSA-UHFFFAOYSA-N 3-(aminomethyl)chromen-2-one Chemical compound C1=CC=C2OC(=O)C(CN)=CC2=C1 AUUIARVPJHGTSA-UHFFFAOYSA-N 0.000 description 1
- QWZHDKGQKYEBKK-UHFFFAOYSA-N 3-aminochromen-2-one Chemical compound C1=CC=C2OC(=O)C(N)=CC2=C1 QWZHDKGQKYEBKK-UHFFFAOYSA-N 0.000 description 1
- XPDXVDYUQZHFPV-UHFFFAOYSA-N Dansyl Chloride Chemical compound C1=CC=C2C(N(C)C)=CC=CC2=C1S(Cl)(=O)=O XPDXVDYUQZHFPV-UHFFFAOYSA-N 0.000 description 1
- 108010009711 Phalloidine Proteins 0.000 description 1
- GYDJEQRTZSCIOI-UHFFFAOYSA-N Tranexamic acid Chemical compound NCC1CCC(C(O)=O)CC1 GYDJEQRTZSCIOI-UHFFFAOYSA-N 0.000 description 1
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- CSJXLKVNKAXFSI-UHFFFAOYSA-N n-(2-aminoethyl)-5-(dimethylamino)naphthalene-1-sulfonamide Chemical compound C1=CC=C2C(N(C)C)=CC=CC2=C1S(=O)(=O)NCCN CSJXLKVNKAXFSI-UHFFFAOYSA-N 0.000 description 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 1
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F42—AMMUNITION; BLASTING
- F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
- F42B35/00—Testing or checking of ammunition
- F42B35/02—Gauging, sorting, trimming or shortening cartridges or missiles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
- G01P3/64—Devices characterised by the determination of the time taken to traverse a fixed distance
- G01P3/68—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light
- G01P3/685—Devices characterised by the determination of the time taken to traverse a fixed distance using optical means, i.e. using infrared, visible, or ultraviolet light for projectile velocity measurements
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Investigating, Analyzing Materials By Fluorescence Or Luminescence (AREA)
Abstract
The invention discloses a kind of non-contact air big gun speed measuring equipment, including air bubble transmitting tube and bullet pitot tube；The launching trajectory of the air bubble transmitting tube and the concentric setting of the trajectory that tests the speed of bullet pitot tube, the trajectory internal diameter that tests the speed are more than the launching trajectory internal diameter；The air bubble transmitting tube includes pipe shaft and transmitting tube head, and the transmitting tube head is narrower than the pipe shaft size；The air bubble transmitting tube front end transmitting tube head insertion described in test the speed trajectory bullet entrance in；Projectile velocity measurements unit is provided with the bullet pitot tube；The structure of the present invention is simple, major diameter bullet pitot tube test the speed it is whole air bubble bullet is not contacted, the accurate measurement of velocity amplitude before being collided to air bubble target can be realized.
Description
Technical field
The invention belongs to the field of testing the speed, more particularly to a kind of non-contact air big gun speed measuring equipment and its method.
Background technology
Generally tested outside Current Domestic using air bubble to simulate the processes such as the transmitting of high-speed equipment, motion, collision.It is empty
Gas big gun High-velocity Projectiles collide before speed accurate measurement, be experimental repeatability and obtain collision rift relevant parameter and stably
The guarantee of performance evaluation, it is directly connected to the reliability of experimental result.
Widely used contact target in the prior art, using contact target scheme, it is characterized in needing to fix one on trajectory
The target surface of individual necessary being, bullet during the target surface by producing signal, with oscillograph recording jumping moment, calculating speed.The party
Case principle and simple in construction, but Shortcomings on measurement accuracy and range.
The content of the invention
Goal of the invention：In order to overcome the deficiencies in the prior art, the present invention provides a kind of to the generation of air bubble target
The non-contact air big gun speed measuring equipment and its method of velocity amplitude accurate measurement before collision.
Technical scheme：To achieve the above object, a kind of non-contact air big gun speed measuring equipment of the invention, including air bubble
Transmitting tube and bullet pitot tube；The launching trajectory of the air bubble transmitting tube with the trajectory that tests the speed of bullet pitot tube is concentric sets
Put, the trajectory internal diameter that tests the speed is more than the launching trajectory internal diameter；The air bubble transmitting tube includes pipe shaft and transmitting tube head, institute
State transmitting tube head and be narrower than the pipe shaft size；Test the speed the bullet of trajectory described in the transmitting tube head insertion of the air bubble transmitting tube front end
In ball entrance；The trajectory inwall painting of testing the speed of bullet pitot tube described in Projectile velocity measurements unit is provided with the bullet pitot tube
There is light-absorbing coating.
Further, the pipe outer wall upper end edge tube head length direction integrated setting of the transmitting tube head has bar shaped limiting stand,
The table top of the bar shaped limiting stand is additionally provided with the spacing blind hole of screw thread, the bullet entrance shape for the trajectory that tested the speed described in transmitting tube head insertion
Under state, the bar limit slot of the bullet entrance inwall upper end coordinates with the bar shaped limiting stand rotary spacing；The bullet is surveyed
Limiting through hole is provided with fast pipe outer wall, and limiting through hole is correspondingly arranged with the spacing blind hole of the screw thread；
Also include wheel disc pin, the bearing pin on the wheel disc pin can be mounted in limiting through hole and the spacing blind hole of the screw thread
In.
Further, in addition to locking spring；The loose spring housing is on the transmitting tube head, and the locking spring is in
Compression shape is arranged between bullet pitot tube and pipe shaft.
Further, spacing is provided with two detection holes to the upper wall of the trajectory that tests the speed of the bullet pitot tube in the axial direction,
Detection part in each detection hole includes ultraviolet light emission head and visible fibre-optical probe target, and the ultraviolet light emission head and
It can be seen that be provided with dividing plate between fibre-optical probe target, wherein the direction of the launch of the ultraviolet light emission head is towards the visible fibre-optical probe
Target rolls oblique.
Further, the Projectile velocity measurements unit includes ultraviolet excitation module, ultraviolet optical fiber, main frame, preceding light
Cable and rear optical cable；The main frame includes photoelectric conversion unit；It is fine that the preceding optical cable and rear cable interior are provided with visible light guide
Dimension；
The ultraviolet light-output end of the ultraviolet excitation module is connected with the ultraviolet light imports end of the ultraviolet optical fiber；
The ultraviolet light-output end of the ultraviolet optical fiber is connected with the ultraviolet light imports end of the ultraviolet light emission head；
The visible light-output end of the visible fibre-optical probe target is connected with the visible ray imports end of the visible optical fiber；
The visible light-output end of the visible optical fiber is connected with the visible ray catch end of photoelectric conversion unit in the main frame.
Further, also include data processing unit in the main frame, data processing unit include calculagraph, microprocessor and
Memory；Centered on microprocessor, calculagraph, memory transmit connect respectively data processing unit with microprocessor signals,
The signal input part of the microprocessor is connected with the signal output part of each photoelectric conversion unit.
Further, also include display and control button on the main frame, the signal input part of the display with it is described
The signal output part connection of microprocessor；The control button is arranged at below the display.
Further, in addition to air bubble bullet, the body middle part of the air bubble bullet are provided with a circle fluorescent dye groove,
Also include O shape elasticity fluorescent dye bands, ultraviolet light fluorescent dye, the elastic fluorescence dye can be adhered in the elastic fluorescent dye band
Material strip is closely sheathed in the fluorescent dye groove, and is arranged the elastic fluorescent dye band external diameter under state and is less than air bubble
Bullet main diameter.
Further, a kind of method of non-contact air big gun speed measuring equipment, is comprised the following steps that：
Step 1：It is determined that the two detection hole relative distances of the axis direction along the trajectory that tests the speed, two ultraviolet excitations
Module continuously imports ultraviolet light to the two ultraviolet optical fibers simultaneously, and then the two ultraviolet light emission heads are respectively to described in two
Ultraviolet light is continuously introduced into detection hole；
Step 2：The air bubble bullet emitted from air bubble pellet injection cylinder enters the trajectory of the bullet pitot tube
In, and along trajectory high-speed motion；
Step 3：On air bubble bullet elastic fluorescent dye band first detection hole of approach when, first inspection
Ultraviolet light derived from ultraviolet light emission head is caught by elastic fluorescent dye band in gaging hole, and elastic fluorescent dye band produces fluorescence immediately
Reaction, elastic fluorescent dye band abrupt release visible ray, visible ray is by first detection caused by elastic fluorescent dye band
The visible fibre-optical probe target in hole is caught, and the visible ray captured is passed through into the visible optical fiber in rear optical cable
It is sent on the photoelectric conversion unit in the main frame, photoelectric conversion unit sends electric signal to impulse generator, immediately arteries and veins
Rush generator and give calculagraph commencing signal；
Step 4：On air bubble bullet elastic fluorescent dye band second detection hole of approach when, second inspection
Ultraviolet light derived from ultraviolet light emission head is caught by elastic fluorescent dye band in gaging hole, and elastic fluorescent dye band produces fluorescence immediately
Reaction, elastic fluorescent dye band abrupt release visible ray again, visible ray is described in second caused by elastic fluorescent dye band
The visible fibre-optical probe target in detection hole is caught, and the visible ray captured is passed through into the visible light guide in preceding optical cable
For fiber conveying on the photoelectric conversion unit in the main frame, photoelectric conversion unit sends electric signal to impulse generator, with
I.e. impulse generator gives calculagraph end signal；
Step 5：Calculagraph sends time difference data to microprocessor, axis direction of the microprocessor along the trajectory that tests the speed
The two detection hole relative distances divided by elastic fluorescent dye band approach first detection hole and approach second successively
Time difference between the detection hole calculates air bubble average velocity of projectile, and last microprocessor sends the data drawn to aobvious
Show device and memory.
Beneficial effect：The structure of the present invention is simple, major diameter bullet pitot tube test the speed it is whole air bubble bullet is not contacted,
The accurate measurement of velocity amplitude before being collided to air bubble target can be realized, fluorescence reaction signal is caught using fibre-optical probe target
Mode is better than common light target formula in stability and accuracy and tested the speed mode, due to elastic fluorescent dye band width in theory
It is controllable very narrow, and then the spacing of two detection holes can be greatly shortened, the accuracy of spot speed measurement is improved, is overcome
Deficiency of the contact type measurement method on range and precision, also above coil target scheme in anti-interference and stability.It is comprehensive
It is described：The apparatus and method have many superiority such as simple in construction, contactless, high sensitivity, strong interference immunity, high range
Energy.
Brief description of the drawings
Accompanying drawing 1 is overall structure diagram of the present invention；
Accompanying drawing 2 is that air bubble transmitting tube separates first structure schematic diagram with bullet pitot tube；
Accompanying drawing 3 is that air bubble transmitting tube separates the second structural representation with bullet pitot tube；
Accompanying drawing 4 is bullet pitot tube partial structural diagram；
Accompanying drawing 5 is that air bubble transmitting tube separates internal structure schematic diagram with bullet pitot tube；
Accompanying drawing 6 is the detection part structural representation in detection hole；
Accompanying drawing 7 is air bubble projectile structure schematic diagram；
Accompanying drawing 8 is the electromagnetic wave spectrogram of ultraviolet light and visible ray.
Embodiment
The present invention is further described below in conjunction with the accompanying drawings.
As shown in accompanying drawing 1 to 8, a kind of non-contact air big gun speed measuring equipment, including air bubble transmitting tube 11 and bullet are surveyed
Fast pipe 2；The launching trajectory 61 of the air bubble transmitting tube 11 and the 62 concentric setting of trajectory of testing the speed of bullet pitot tube 2, it is described
The internal diameter of trajectory 62 that tests the speed is more than the internal diameter of launching trajectory 61, major diameter bullet pitot tube 11 is tested the speed whole process to air bubble bullet
Do not contact, can realize the accurate measurement of velocity amplitude before being collided to air bubble target, major diameter bullet pitot tube tests the speed whole process
Air bubble bullet is not contacted, can more really react the motion state of measured object；The air bubble transmitting tube 11 includes pipe
Body 111 and transmitting tube head 64, the transmitting tube head 64 are narrower than the size of pipe shaft 111, axial support are provided for locking spring 65；
The transmitting tube head 64 of the front end of air bubble transmitting tube 11 is inserted in the bullet entrance 79 of the trajectory 62 that tests the speed；The bullet is surveyed
Projectile velocity measurements unit is provided with fast pipe 2, the inwall of trajectory 61 that tests the speed of the bullet pitot tube 62 scribbles light-absorbing coating, had
Effect prevents interference of the extraneous visible ray to test experiments.
The pipe outer wall upper end edge tube head length direction integrated setting of the transmitting tube head 64 has bar shaped limiting stand 67, described
The table top of bar shaped limiting stand 67 is additionally provided with the spacing blind hole 68 of screw thread, and the bullet that transmitting tube head 64 inserts the trajectory 62 that tests the speed enters
Under 79 states of mouth, bar limit slot 77 and the rotary spacing of bar shaped limiting stand 67 of the inwall upper end of bullet entrance 79 are matched somebody with somebody
Close, prevent speed measuring device from rotating；Be provided with limiting through hole 51 on the outer wall of bullet pitot tube 2, and limiting through hole 51 with
The spacing blind hole 68 of screw thread is correspondingly arranged；Also include wheel disc pin 52, the bearing pin 53 on the wheel disc pin 52 can be mounted in
In limiting through hole 51 and the spacing blind hole 68 of the screw thread, make the axial limiting of bullet pitot tube 2, effectively reduce systematic error.
Also include locking spring 65；The loose spring 65 is sheathed on the transmitting tube head 64, and the locking spring 65
It is arranged in compression shape between bullet pitot tube 2 and pipe shaft 111；In the air bubble T-time, equipment can integrally produce larger
Vibration, it is easy to produce the situation of loosening, once producing loosening, it loosens situation can be more rapid, locking under compressive state
Spring 65 makes bullet pitot tube 2 remain axially loaded state, can effectively inhibit its positive feedback formula loose phenomenon.
Spacing is provided with two detection holes 43 to the upper wall of the trajectory 62 that tests the speed of the bullet pitot tube 2 in the axial direction, respectively
Detection part 63 in the detection hole 43 includes ultraviolet light emission first 58 and visible fibre-optical probe target 60, and the ultraviolet light is sent out
Penetrate between first 58 and visible fibre-optical probe target 60 and be provided with dividing plate 105, wherein the direction of the launch court of the ultraviolet light emission first 58
The visible fibre-optical probe target 60 roll tiltedly, when air bubble bullet just past when, ultraviolet light emission it is first 58 project ultraviolet light
The fluorescent dye that the visible fibre-optical probe target 60 faces is invested, caused visible ray is by described visible after making its fluorescence reaction
Fibre-optical probe target 60 is fully caught, and anti-leak-stopping mends phenomenon.
The Projectile velocity measurements unit includes ultraviolet excitation module 54, ultraviolet optical fiber 55, main frame 5, preceding optical cable 3
With rear optical cable 4；The main frame 5 includes photoelectric conversion unit；The preceding optical cable 3 and rear optical cable 4 are internally provided with visible light guide
Fiber 59；The ultraviolet light-output end of the ultraviolet excitation module 54 and the ultraviolet light imports end 56 of the ultraviolet optical fiber 55
Connection；The ultraviolet light-output end 57 of the ultraviolet optical fiber 55 connects with the ultraviolet light imports end of the ultraviolet light emission first 58
Connect；In the present embodiment, ultraviolet optical fiber 59 is silica fibre, and silica fibre transmission wavelength scope is wide (near ultraviolet near red
Outside, wavelength is from 0.3-2.1um), so silica fibre is applied to the transmission of ultraviolet wavelength signal, silica fibre numerical aperture is big,
Optical fiber core diameter is big, high mechanical strength, good bending property and is easy to and the advantages that light source couples；
The visible light-output end of the visible fibre-optical probe target 60 and the visible ray imports end of the visible optical fiber 59
Connection；The visible light-output end of the visible optical fiber 59 and the visible ray catch end of photoelectric conversion unit in the main frame 5
Connection；Also include data processing unit in the main frame 5, data processing unit includes calculagraph, microprocessor and memory；Number
According to processing unit centered on microprocessor, calculagraph, memory transmit with microprocessor signals connect respectively, the microprocessor
The signal input part of device is connected with the signal output part of each photoelectric conversion unit.
Also include display 6 and control button 7, the signal input part of the display 6 and micro- place on the main frame 5
Manage the signal output part connection of device；The control button 7 is arranged at the lower section of display 6.
Also include air bubble bullet, be provided with a circle fluorescent dye groove 32 in the middle part of the body of the air bubble bullet, also wrap
O shape elasticity fluorescent dyes band 31 is included, ultraviolet light fluorescent dye can be adhered in the elastic fluorescent dye band 31, when certain normal temperature material
Incident light (being typically ultra-violet bands) irradiation through certain wavelength, enters excitation state, and de excitation is sent out immediately after absorbing luminous energy
And send the emergent light longer than the wavelength of incident light (usual wavelength is in visible light wave range)；A part of fluorescent material once stops
Incident light, luminescence phenomenon also disappear immediately therewith, and the emergent light with this property is just referred to as fluorescence, wherein Representative fluorescence
The excitation wavelength and launch wavelength of dyestuff are as shown in the table：
| Fluorescent dye | PLE spike grows (nm) | Emission spectra spike grows (nm) |
| Dansyl chloride | 337 | 492 |
| 4-Methylumbelliferone | 385 | 502 |
| AMCA(Aminomethylcoumarin) | 345 | 425 |
| Aminocoumarin | 346 | 442 |
| Anthrocyl stearate | 381 | 446 |
| Bisbenzamide | 360 | 461 |
| Catecholamine | 410 | 470 |
| Coumarin Phalloidin | 387 | 470 |
| Dansyl Amine | 337 | 517 |
The elastic fluorescent dye band 31 is closely sheathed in the fluorescent dye groove 32, and is arranged the bullet under state
The external diameter of property fluorescent dye band 31 is less than air bubble bullet main diameter；It can effectively prevent elastic fluorescent dye band 31 from touching bullet
Road inwall, the phenomenon not just being worn up to fluorescence reaction point is avoided, while be also prevented from visible ray side caused by fluorescence reaction
Leakage interferes to detection；Because the width of elastic fluorescent dye band 31 is controllable very narrow, and then two can be greatly shortened
The spacing of individual two detection holes 43, improve the accuracy of spot speed measurement.
A kind of method of non-contact air big gun speed measuring equipment, is comprised the following steps that：
Step 1：It is determined that two relative distances of detection hole 43 of the axis direction along the trajectory 62 that tests the speed, two ultraviolet lights
Excitation module 54 continuously imports ultraviolet light, and then two first 58 points of the ultraviolet light emissions to the two ultraviolet optical fibers 55 simultaneously
Ultraviolet light is not continuously introduced into two detection holes 43；
Step 2：The air bubble bullet emitted from air bubble pellet injection cylinder 11 enters the bullet of the bullet pitot tube 2
In road, and along trajectory high-speed motion；
Step 3：During 31 first detection hole 43 of approach of elastic fluorescent dye band on air bubble bullet, first institute
State in detection hole 43 that ultraviolet light is caught by elastic fluorescent dye band 31 derived from ultraviolet light emission first 58, immediately elastic fluorescent dye
Band 31 produces fluorescence reaction, the elastic abrupt release visible ray of fluorescent dye band 31, visible ray caused by elastic fluorescent dye band 31
Caught by the visible fibre-optical probe target 60 in first detection hole 43, and the visible ray captured is passed through into rear optical cable
The visible optical fiber 59 in 4 is sent on the photoelectric conversion unit in the main frame 5, and photoelectric conversion unit is by electric signal
Send impulse generator to, impulse generator gives calculagraph commencing signal immediately；
Step 4：During 31 second detection hole 43 of approach of elastic fluorescent dye band on air bubble bullet, second institute
State in detection hole 43 that ultraviolet light is caught by elastic fluorescent dye band 31 derived from ultraviolet light emission first 58, immediately elastic fluorescent dye
Band 31 produces fluorescence reaction, elastic fluorescent dye band 31 abrupt release visible ray again, can caused by elastic fluorescent dye band 31
See that light is caught by the visible fibre-optical probe target 60 in second detection hole 43, and the visible ray captured passed through preceding
The visible optical fiber 59 in optical cable 3 is sent on the photoelectric conversion unit in the main frame 5, and photoelectric conversion unit is by electricity
Signal sends impulse generator to, and impulse generator gives calculagraph end signal immediately；
Step 5：Calculagraph sends time difference data to microprocessor, axis side of the microprocessor along the trajectory 62 that tests the speed
To two relative distances of detection hole 43 divided by elastic fluorescent dye band 31 successively the detection hole 43 of approach first and way
Time difference between the detection hole 43 of second, footpath calculates air bubble average velocity of projectile, the number that last microprocessor will be drawn
According to sending display 6 and memory to.
Described above is only the preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications also should
It is considered as protection scope of the present invention.
Claims (9)
- A kind of 1. non-contact air big gun speed measuring equipment, it is characterised in that：Including air bubble transmitting tube (11) and bullet pitot tube (2)；The launching trajectory (61) of the air bubble transmitting tube (11) with the trajectory that tests the speed (62) of bullet pitot tube (2) is concentric sets Put, the trajectory that tests the speed (62) internal diameter is more than the launching trajectory (61) internal diameter；The air bubble transmitting tube (11) includes pipe shaft (111) and transmitting tube head (64), the transmitting tube head (64) are narrower than the pipe shaft (111) size；The air bubble transmitting tube (11) front end transmitting tube head (64) insertion described in test the speed trajectory (62) bullet entrance (79) in；The bullet pitot tube (2) On be provided with Projectile velocity measurements unit, the trajectory that tests the speed (62) inwall of the bullet pitot tube (2) scribbles light-absorbing coating.
- A kind of 2. non-contact air big gun speed measuring equipment according to claim 1, it is characterised in that：The transmitting tube head (64) pipe outer wall upper end edge tube head length direction integrated setting has bar shaped limiting stand (67), the bar shaped limiting stand (67) Table top is additionally provided with the spacing blind hole of screw thread (68), bullet entrance (79) shape for the trajectory (62) that tested the speed described in transmitting tube head (64) insertion Under state, the bar limit slot (77) of bullet entrance (79) the inwall upper end is matched somebody with somebody with bar shaped limiting stand (67) rotary spacing Close；Limiting through hole (51), and limiting through hole (51) and the spacing blind hole of the screw thread are provided with bullet pitot tube (2) outer wall (68) it is correspondingly arranged；Also include wheel disc pin (52), the bearing pin (53) on the wheel disc pin (52) can be mounted in limiting through hole (51) and described In the spacing blind hole of screw thread (68).
- A kind of 3. non-contact air big gun speed measuring equipment according to claim 1, it is characterised in that：Also include locking spring (65)；The loose spring (65) is sheathed on the transmitting tube head (64), and the locking spring (65) is arranged in compression shape Between bullet pitot tube (2) and pipe shaft (111).
- A kind of 4. non-contact air big gun speed measuring equipment according to claim 1, it is characterised in that：The bullet pitot tube (2) spacing is provided with two detection holes (43) to the upper wall of the trajectory that tests the speed (62) in the axial direction, and each detection hole (43) is interior Detection part (63) include ultraviolet light emission head (58) and visible fibre-optical probe target (60), and the ultraviolet light emission head (58) Dividing plate (105) is provided between visible fibre-optical probe target (60), wherein the direction of the launch court of the ultraviolet light emission head (58) The visible fibre-optical probe target (60) rolls oblique.
- A kind of 5. non-contact air big gun speed measuring equipment according to claim 1 and 4, it is characterised in that：The bullet speed Degree measuring unit includes ultraviolet excitation module (54), ultraviolet optical fiber (55), main frame (5), preceding optical cable (3) and rear optical cable (4)；The main frame (5) includes photoelectric conversion unit；The preceding optical cable (3) and rear optical cable (4) are internally provided with visible light guide Fiber (59)；The ultraviolet light-output end of the ultraviolet excitation module (54) and the ultraviolet light imports end of the ultraviolet optical fiber (55) (56) connect；The ultraviolet light-output end (57) of the ultraviolet optical fiber (55) and the ultraviolet light of the ultraviolet light emission head (58) Imports end connects；The visible light-output end of the visible fibre-optical probe target (60) and the visible ray imports end of the visible optical fiber (59) Connection；The visible light-output end of the visible optical fiber (59) and the visible ray of photoelectric conversion unit in the main frame (5) are caught Catch end connection.
- A kind of 6. non-contact air big gun speed measuring equipment according to claim 5, it is characterised in that：In the main frame (5) Also include data processing unit, data processing unit includes calculagraph, microprocessor and memory；Data processing unit is with micro- place Manage device centered on, calculagraph, memory respectively with microprocessor signals transmit connect, the signal input part of the microprocessor with The signal output part connection of each photoelectric conversion unit.
- A kind of 7. non-contact air big gun speed measuring equipment according to claim 5, it is characterised in that：On the main frame (5) Also include display (6) and control button (7), the signal of the signal input part and the microprocessor of the display (6) is defeated Go out end connection；The control button (7) is arranged at below the display (6).
- 8. also including air bubble bullet, a circle fluorescent dye groove (32) is provided with the middle part of the body of the air bubble bullet, is also wrapped O shape elasticity fluorescent dye bands (31) are included, ultraviolet light fluorescent dye can be adhered in the elastic fluorescent dye band (31), and the elasticity is glimmering Photoinitiator dye band (31) is closely sheathed in the fluorescent dye groove (32), and is arranged the elastic fluorescent dye band under state (31) external diameter is less than air bubble bullet main diameter.
- A kind of 9. method of non-contact air big gun speed measuring equipment, it is characterised in that：Comprise the following steps that：Step 1：It is determined that two detection hole (43) relative distances of the axis direction along the trajectory (62) that tests the speed, two ultraviolet lights Excitation module (54) while continuously import ultraviolet lights, and then the two ultraviolet light emission heads to the two ultraviolet optical fibers (55) (58) it is continuously introduced into ultraviolet light into two detection holes (43) respectively；Step 2：The air bubble bullet emitted from air bubble pellet injection cylinder (11) enters the bullet of the bullet pitot tube (2) In road, and along trajectory high-speed motion；Step 3：During elastic first detection hole (43) of fluorescent dye band (31) approach on air bubble bullet, first institute Ultraviolet light derived from ultraviolet light emission head (58) in detection hole (43) is stated to be caught by elastic fluorescent dye band (31), it is elastic immediately glimmering Photoinitiator dye band (31) produces fluorescence reaction, elastic fluorescent dye band (31) abrupt release visible ray, elastic fluorescent dye band (31) Caused visible ray caught by the visible fibre-optical probe target (60) in first detection hole (43), and will capture Visible ray is sent to the photoelectric conversion unit in the main frame (5) by the visible optical fiber (59) in rear optical cable (4) On, photoelectric conversion unit sends electric signal to impulse generator, and impulse generator gives calculagraph commencing signal immediately；Step 4：During elastic second detection hole (43) of fluorescent dye band (31) approach on air bubble bullet, second institute Ultraviolet light derived from ultraviolet light emission head (58) in detection hole (43) is stated to be caught by elastic fluorescent dye band (31), it is elastic immediately glimmering Photoinitiator dye band (31) produces fluorescence reaction, elastic fluorescent dye band (31) abrupt release visible ray again, elastic fluorescent dye band (31) visible ray caused by is caught by the visible fibre-optical probe target (60) in second detection hole (43), and will be caught To visible ray be sent to by the visible optical fiber (59) in preceding optical cable (3) photoelectric conversion in the main frame (5) On unit, photoelectric conversion unit sends electric signal to impulse generator, and impulse generator gives calculagraph end signal immediately；Step 5：Calculagraph sends time difference data to microprocessor, axis direction of the microprocessor along trajectory (62) of testing the speed Two detection hole (43) relative distances divided by elastic fluorescent dye band (31) detection hole (43) of approach first successively Time difference between the detection hole (43) of approach second calculates air bubble average velocity of projectile, and last microprocessor is incited somebody to action The data gone out send display (6) and memory to.
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| CN110207542A (en) * | 2019-04-30 | 2019-09-06 | 南京航空航天大学 | A kind of Gas Gun is vented, tests the speed, chip removal integration stops rest device |
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Application publication date: 20180202 |