CN202649229U - Laser reflection-type large-target surface velocity-measurement light-screen target - Google Patents
Laser reflection-type large-target surface velocity-measurement light-screen target Download PDFInfo
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- CN202649229U CN202649229U CN 201220261478 CN201220261478U CN202649229U CN 202649229 U CN202649229 U CN 202649229U CN 201220261478 CN201220261478 CN 201220261478 CN 201220261478 U CN201220261478 U CN 201220261478U CN 202649229 U CN202649229 U CN 202649229U
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Abstract
The utility model belongs to the technical field of target range testing equipment, in particular to a laser reflection-type large-target surface velocity-measurement light-screen target. In order to solve the problems of incapability of manufacturing a large target surface and measuring flying velocity of a high-speed small target object in the prior art, the utility model provides the following technical schemes: the laser reflection-type large-target surface velocity-measurement light-screen target comprises two parallelly-arranged light-screen targets; each of the light-screen target consists of an emitting/receiving device and an L-shaped light screen reflecting device, wherein the emitting/receiving device is composed of a lens-type photoelectric detector and two linear lasers; the L-shaped light screen reflecting device is composed of two symmetrical portions, wherein each portion is spliced by a plurality of segments of arc-shaped retro-reflecting films, and the connecting line of the center of each segment of arc-shaped retro-reflecting film and the center of the lens of the lens-type photoelectric detector is perpendicular to the tangent line of the center of each retro-reflecting film; and two segments on the L-shaped light screen reflecting device are provided with two laser indicators. The target surface of the light-screen target provided by the utility model can be manufactured to a large surface so as to measure the flying velocity of the high-speed small target object.
Description
Technical field:
The utility model belongs to the shooting range measurment equipment technical field, refers in particular to the large target surface light screen target for velocity measurement of a kind of laser reflection formula.
Background technology:
In the production of weaponry and development, projectile flight speed is to estimate the key parameter of weapon performance, also is must survey project in the examination and test of products.
The measuring method of common measurement projectile flight speed mainly is that the district cuts velocimetry, and the measurement mechanism that the district cuts in the velocimetry mainly contains contact and contactless two class testing devices.Contact measuring apparatus mainly contains copper wire target, steel sheet target, tinfoil paper target etc., but because this measurement all needs bullet and proving installation generation mechanical effect could produce the mistake target signal of bullet, but so the reusing of this test target is not high and workload is large, measuring error is large; Along with the development of photoelectric technology, non-contact measurement apparatus has substituted contact measuring apparatus gradually, and non-contact measurement apparatus mainly contains coil target, sky, light curtain target etc.Wherein coil target can not be measured the bullet of non-metallic material, and is disturbed by external electromagnetic field easily, and therefore stability and reliability are relatively poor; Sky is as light source take sky background, therefore be only applicable to the outdoor target range test, and the light curtain target automatic light source, therefore not only can be used for the outdoor test that can also be used for indoor velocity of shot, in addition, light curtain target also has the characteristics such as detection sensitivity height, fast response time, principle are simple, so light curtain target has become main force's equipment of velocity of shot test at present.
Light curtain target mainly is comprised of light source and receiving trap, when bullet passes the light curtain, block the part light that enters receiving trap, the photo-signal that changes, excessively target signal through signal processing circuit output bullet, start the time interval that (or stopping) time-measuring gauge record bullet passes two targets, calculate the average flight speed that bullet is crossed target according to range.Along with improving constantly of photoelectric device performance, light curtain velocity measuring technique is also at development, but the realization of large target surface light screen target for velocity measurement is a problems to be solved always.Domestic research unit to light screen target for velocity measurement mainly contains at present: Xi'an Technological University, Northcentral University, University Of Tianjin etc., wherein the employing LED of Xi'an Technological University's development is that the detection target surface of the XGK-2002 type light curtain target of light source is 1m * 1m, the employing laser of Northcentral University's development is that the detection target surface of the JGM-K500 type light curtain target of light source is 1m * 1m, and the employing laser of University Of Tianjin's development is that the detection target surface of the light curtain target of light source is 980mm * 980mm; The detection target surface of the B471 type light curtain target of external HPI company development is 600mm * 800mm.
The detection target surface of the above-mentioned light curtain target of having realized is 1m * 1m to the maximum, although also there are research and the report of Veiling target with big target face or sky in this area, but in the design of these large target surfaces, just increase simply the quantity of light source and receiving device, or the distance that increases between light source and the receiving trap increases target surface, then along with the progressively increase of target surface, the luminous energy that receiving device receives weakens gradually, cause the sensitivity of test macro to reduce gradually, the frequency response characteristic of system reduces, thus the flying speed that causes testing the high speed small target object.
Above several light curtain targets of carrying are subjected to himself light curtain to form the restriction of principle, and target surface can't be done greatly, thereby can't realize the measurement to high speed small target object flying speed.
The utility model content:
The utility model will provide a kind of laser reflection formula large target surface light screen target for velocity measurement, can't make greatly the problem that can't measure high speed small target object flying speed to overcome the target surface that prior art exists.
For achieving the above object, the technical scheme that provides of the utility model is:
The large target surface light screen target for velocity measurement of a kind of laser reflection formula comprises two light curtain targets that be arranged in parallel, it is characterized in that: described light curtain target is comprised of sending and receiving apparatus and L shaped veiling reflection device two parts,
Described sending and receiving apparatus is made of lens type photodetector and two word laser line generators, and two word laser line generators are symmetricly set in the both sides of lens type photodetector;
Described L shaped veiling reflection device is comprised of two parts of symmetry, and every part is spliced by multistage arc retroreflector film, and the center of every section arc retroreflector film is vertical with the tangent line at retroreflector center membrane place with the optical center line of lens type photodetector; Be provided with two laser designator on two sections of L shaped veiling reflection device.
The large target surface light screen target for velocity measurement of above-mentioned a kind of laser reflection formula also comprises target holder, and described sending and receiving apparatus and L shaped veiling reflection device are fixedly installed on the target holder respectively.
Correspondence is provided with aiming point-like laser instrument on above-mentioned two target holders.
Compared with prior art, the utility model has the advantages that:
1, the principle that forms according to laser light curtain, and adopt a high-power word laser line generator strengthens so that enter the luminous energy of lens type photodetector, thus target surface can do greatly, thereby can measure high speed small target object flying speed.
2, only adopt a word laser line generator as light source, the L shaped veiling reflection device of selecting simultaneously the retroreflector membrane array to consist of has been saved design cost, and has in use been saved electric energy.
3, the utility model can be used for realizing the accurate measurement of high speed small-size object flying speed, is scientific research, production, the verification of Conventional Weapon and shellproof equipment and aeronautical material such as are checked at the conventional equipment that carries out velocity survey.
Description of drawings:
Fig. 1 is the structural representation of embodiment 1;
Fig. 2 is the structural representation of sending and receiving apparatus;
Fig. 3 is the structural representation of embodiment 2;
Fig. 4 is the cloth target synoptic diagram of target holder;
Wherein, 1-sending and receiving apparatus, 2-L shape veiling reflection device, 3-one word laser line generator, 4-laser designator, 5-target holder, 6-arc retroreflector film, 7-lens type photodetector, 8-Center Line Marking, 9-aiming point-like laser instrument.
Embodiment:
Now elaborate by reference to the accompanying drawings the utility model.
Embodiment 1:
Referring to Fig. 1 and Fig. 2, the large target surface light screen target for velocity measurement of a kind of laser reflection formula comprises two light curtain targets that be arranged in parallel, and described light curtain target is comprised of sending and receiving apparatus 1 and L shaped veiling reflection device 2 two parts,
Described sending and receiving apparatus 1 is made of lens type photodetector 7 and two word laser line generators 3, and two word laser line generators 3 are symmetricly set in the both sides of lens type photodetector 7;
Described L shaped veiling reflection device 2 is comprised of two parts of symmetry, every part is spliced by multistage arc retroreflector film 6, and the center of every section arc retroreflector film 6 is vertical with the tangent line of retroreflector film 6 centers with the optical center line of lens type photodetector 7; Be provided with two laser designator 4 on two sections of L shaped veiling reflection device 2.
Two light curtain targets are respectively initial target and cut-off target according to succession.In order to determine more accurately the position, design centre graticule 8 on sending and receiving apparatus 1 is for the center of mark lens type photodetector 7 and a word laser line generator 3.
During testing ground cloth target, regulating indication laser 4 makes its word line laser that sends overlap with the Center Line Marking 8 of sending and receiving apparatus 1, regulate again sending and receiving apparatus 1, so that the word line laser that a word laser line generator 3 sends on the sending and receiving apparatus 1 and the center superposition of indication laser 4, guaranteed that so just the light that the word laser line generator 3 on the sending and receiving apparatus 1 is launched is just received by lens type photodetector 7, forms large tracts of land and surveys the light curtain in the space after L shaped veiling reflection device 2 reflections.
In the present embodiment, L shaped veiling reflection device 2 hangs on the indoor body of wall, sending and receiving apparatus 1 and L shaped veiling reflection device 2 are relative and put installation on the ground, wherein lens type photodetector 7 adopts the XGK-350 type wide-angle sky of 90 ° of visual fields, it is 650nm that one word laser line generator 3 adopts wavelength, power is the word laser line generator of 100mW, can construct the detection target surface of 10m * 10m this moment in the space, if want to make up the light curtain of larger target surface, can realize by a word laser line generator 3 that adopts larger luminous power.During concrete cloth target, utilize transit and laser level to assist and regulate, be parallel to each other with two light curtain faces that guarantee initial target and cut-off target, improve measuring accuracy.
Embodiment 2:
Referring to Fig. 3 and Fig. 4, the structure of described sending and receiving apparatus 1 and L shaped veiling reflection device 2 is with embodiment 1, and different places are, they are fixedly installed on respectively on the diagonal angle of target holder 5 of rectangle.Be separately installed with eight in twos corresponding settings of aiming point-like laser instruments 9 on 9, two target holders 5 of an aiming point-like laser instrument on four jiaos of target holder 5.
In the present embodiment, lens type photodetector 7 adopts the XGK-350 type wide-angle sky of 90 ° of visual fields, when testing the speed, two light curtain targets (i.e. a cut-off of initial target target), spacing 5m places, during the cloth target, open four aiming point-like laser instruments 9 on the integrated target holder, according to the alignment case of corresponding laser instrument on initial target and the cut-off target, regulate two target holders, 5 positions, be parallel to each other with the light curtain face that guarantees initial target and cut-off target.After adopting aiming point laser instrument 9, so that the cloth target is simple, fast, and reduced the measuring error of range.
The embodiment of the above is preferred embodiment of the present utility model only, is not to limit practical range of the present utility model with this, so the equivalence that all shapes according to the utility model, structure and principle are done changes, all should be covered by protection domain of the present utility model.
Claims (3)
1. the large target surface light screen target for velocity measurement of laser reflection formula comprises two light curtain targets that be arranged in parallel, it is characterized in that: described light curtain target is comprised of sending and receiving apparatus (1) and L shaped veiling reflection device (2) two parts,
Described sending and receiving apparatus (1) is made of lens type photodetector (7) and two word laser line generators (3), and two word laser line generators (3) are symmetricly set in the both sides of lens type photodetector (7);
Described L shaped veiling reflection device (2) is comprised of two parts of symmetry, every part is spliced by multistage arc retroreflector film (6), and the center of every section arc retroreflector film (6) is vertical with the tangent line of retroreflector film (6) center with the optical center line of lens type photodetector (7); Be provided with two laser designator (4) on two sections of L shaped veiling reflection device (2).
2. the large target surface light screen target for velocity measurement of a kind of laser reflection formula as claimed in claim 1, it is characterized in that: also comprise target holder (5), described sending and receiving apparatus (1) and L shaped veiling reflection device (2) are fixedly installed on respectively on the target holder (5).
3. the large target surface light screen target for velocity measurement of a kind of laser reflection formula as claimed in claim 2 is characterized in that: the upper correspondence of described two target holders (5) is provided with aiming point-like laser instrument (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220261478 CN202649229U (en) | 2012-06-05 | 2012-06-05 | Laser reflection-type large-target surface velocity-measurement light-screen target |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220261478 CN202649229U (en) | 2012-06-05 | 2012-06-05 | Laser reflection-type large-target surface velocity-measurement light-screen target |
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| CN202649229U true CN202649229U (en) | 2013-01-02 |
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| CN 201220261478 Expired - Fee Related CN202649229U (en) | 2012-06-05 | 2012-06-05 | Laser reflection-type large-target surface velocity-measurement light-screen target |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363926A (en) * | 2013-08-01 | 2013-10-23 | 西安工业大学 | Device and method for detecting light-screen parameters of light-screen targets |
| CN104655016A (en) * | 2015-02-15 | 2015-05-27 | 中北大学 | Projectile target hitting coordinate testing method based on retro-reflection type laser curtain |
| CN109116370A (en) * | 2018-07-17 | 2019-01-01 | 北京盖博瑞尔科技发展有限公司 | A kind of object detection method and system |
| CN110702938A (en) * | 2019-10-18 | 2020-01-17 | 西安工业大学 | Device and method for measuring initial speed of array gun barrel projectile by wedge-shaped light curtain array |
| CN111024987A (en) * | 2019-11-28 | 2020-04-17 | 内蒙古北方重工业集团有限公司 | Device for enlarging light curtain area based on spherical reflection and using method thereof |
| CN112762770A (en) * | 2020-12-30 | 2021-05-07 | 西安工业大学 | Active double-laser wide-angle light curtain target |
-
2012
- 2012-06-05 CN CN 201220261478 patent/CN202649229U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103363926A (en) * | 2013-08-01 | 2013-10-23 | 西安工业大学 | Device and method for detecting light-screen parameters of light-screen targets |
| CN103363926B (en) * | 2013-08-01 | 2016-04-06 | 西安工业大学 | The pick-up unit of light screen target for velocity measurement light curtain parameter and method |
| CN104655016A (en) * | 2015-02-15 | 2015-05-27 | 中北大学 | Projectile target hitting coordinate testing method based on retro-reflection type laser curtain |
| CN104655016B (en) * | 2015-02-15 | 2017-10-27 | 中北大学 | A kind of pill impacting coordinate method of testing based on laser retroreflector formula light curtain |
| CN109116370A (en) * | 2018-07-17 | 2019-01-01 | 北京盖博瑞尔科技发展有限公司 | A kind of object detection method and system |
| CN110702938A (en) * | 2019-10-18 | 2020-01-17 | 西安工业大学 | Device and method for measuring initial speed of array gun barrel projectile by wedge-shaped light curtain array |
| CN110702938B (en) * | 2019-10-18 | 2022-05-20 | 西安工业大学 | Device and method for measuring initial speed of array gun barrel projectile by wedge-shaped light curtain array |
| CN111024987A (en) * | 2019-11-28 | 2020-04-17 | 内蒙古北方重工业集团有限公司 | Device for enlarging light curtain area based on spherical reflection and using method thereof |
| CN112762770A (en) * | 2020-12-30 | 2021-05-07 | 西安工业大学 | Active double-laser wide-angle light curtain target |
| CN112762770B (en) * | 2020-12-30 | 2023-12-22 | 西安工业大学 | Active double-laser wide-angle light curtain target |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20140605 |