CN111412796A - Detection and calibration device and method for dynamic response performance of backdrop target - Google Patents
Detection and calibration device and method for dynamic response performance of backdrop target Download PDFInfo
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- CN111412796A CN111412796A CN202010227850.0A CN202010227850A CN111412796A CN 111412796 A CN111412796 A CN 111412796A CN 202010227850 A CN202010227850 A CN 202010227850A CN 111412796 A CN111412796 A CN 111412796A
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- 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
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- General Engineering & Computer Science (AREA)
- Aiming, Guidance, Guns With A Light Source, Armor, Camouflage, And Targets (AREA)
- Photometry And Measurement Of Optical Pulse Characteristics (AREA)
Abstract
The invention relates to a sky screen target dynamic response performance detection calibrating device and a method thereof, the device comprises a collimated light source, the collimated light source is arranged on an incident light path of a right-angle prism, a beam expanding lens is arranged on an emergent light path of the right-angle prism, the device also comprises a time mark unthreaded hole and a time mark light source, a rotating tube is in a cylindrical shape with one closed end, the closed end is an inwards concave base, the base is made of an opaque material, a high-speed motor is connected with the central position of the bottom of the closed end of the rotating tube through a coupler, a pair of time mark unthreaded holes are arranged on an annular side wall of the base along the diameter direction, an opaque hollow tube is horizontally arranged between the pair of time mark unthreaded holes, a rotating gap is arranged between the hollow; the high-speed photoelectric probe is arranged outside the glass rotating tube and is positioned on the axis of the hollow tube; the device and the method can finish the high-efficiency and accurate detection of the dynamic response characteristic of the dome target without disassembling an instrument during detection.
Description
Technical Field
The invention relates to the technical field of target range testing, in particular to a dynamic response performance detection and calibration device and method for a backdrop target.
Background
The backdrop target is a photoelectric instrument for testing the time when a flying target reaches a preset space position, and a commonly used backdrop target consists of an optical system, a photoelectric detector, a signal processing circuit and a supporting structure.
In the light weapon and artillery performance live-fire test, the speed of the projectile flying over a predetermined point is often required to be accurately measured, and the method of 'sky screen target + time measuring instrument' is one of the commonly adopted modes in weapon shooting ranges and bases at home and abroad. Two canopy targets with the same performance are placed on a trajectory line, the time of the trajectory over the two targets is measured by using a time measuring instrument, and the average speed of the projectile over the two canopy targets can be measured by combining the distance between the two targets.
The field of view of the backdrop target is called the backdrop, sometimes also referred to as the light curtain. Since the actual light curtain is always thick and the projectile has a certain length, it takes a while for the projectile to pass through the light curtain, so that the output of the backdrop target always has a pulse signal of a certain width. Because the parameters of the components constituting the sky-screen targets have inevitable dispersion, even if the same flight target is detected, the output pulses of different sky-screen targets have certain differences, including output delay, pulse width and the like, which is one of the important reasons for generating test errors. In order to detect the difference of the dynamic output performance of the target of the verification awning, the corresponding relation between a certain moment of the output pulse and the position of the detected target relative to the light awning must be detected.
Disclosure of Invention
The invention provides a detection and calibration device for dynamic response performance of a backdrop target, aiming at the problems that the backdrop target has time delay in the target detection and signal processing processes and cannot give the position of a moving target relative to a light curtain at a certain moment on a pulse signal.
In order to achieve the purpose, the technical scheme provided by the invention is as follows:
a detection and calibration device for dynamic response performance of a sky-screen target comprises a high-speed motor, a coupler, a sheath, a beam expanding lens, a rotating pipe, a collimating light source, a right-angle prism, a high-speed photoelectric probe, a time mark light hole and a time mark light source, wherein the collimating light source is arranged on an incident light path of the right-angle prism, the beam expanding lens is arranged on an emergent light path of the right-angle prism, the rotating pipe is cylindrical with one closed end, the closed end is an inwards concave base, the base is made of light-tight materials, an upper annular glass pipe is connected with the closed end at the lower part, the high-speed motor is connected with the central position of the bottom of the closed end of the rotating pipe through a coupler, a pair of time mark unthreaded holes are formed in the annular side wall of the base along the diameter direction, a light-tight hollow pipe is horizontally arranged between the pair of time mark unthreaded holes, a rotating gap is formed between the hollow pipe and the inner wall of the rotating pipe base, and the time mark light source is fixedly arranged in the hollow; the high-speed photoelectric probe is arranged outside the glass rotating pipe, and the probe is positioned on the axis of the hollow pipe.
The detection and verification method comprises the following steps:
the method is characterized in that narrow time scale pulses output by a high-speed photoelectric probe are used as reference time, bullet-shaped pulses output by a backdrop target are contrastively analyzed, and the time-space corresponding relation between the bullet-shaped pulses output by the backdrop target and the position of a tested target penetrating through a light curtain can be obtained, so that the time-space performance detection and verification of a backdrop target output signal are completed.
Compared with the prior art, the invention has the beneficial results that:
1. the operation is simple: the device can finish the high-efficiency and accurate detection of the dynamic response characteristic of the dome target without disassembling an instrument during detection.
2. The narrow time scale pulse output by the high-speed photoelectric probe on the device is used as a reference moment, and the bullet-shaped pulse output by the backdrop target can be contrastively analyzed, so that a feasible technical approach is provided for obtaining the time-space corresponding relation between the bullet-shaped pulse signal of the backdrop target and the position of the measured target passing through the light curtain in the thickness direction of the light curtain.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings that should be used will be briefly described below.
FIG. 1 is a structural composition diagram of a dynamic response performance detection and calibration device for a sky-screen target;
FIG. 2 is a schematic diagram of a dynamic response performance detection and calibration device for a backdrop target;
in the figure, 1-high-speed motor, 2-coupler, 3-sheath, 4-beam expanding lens, 5-rotating tube, 6-collimation light source, 7-right angle prism, 8-high-speed photoelectric probe, 9-time scale light hole and 10-time scale light source.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Referring to fig. 1, a sky-screen target dynamic response performance detection and calibration device comprises a high-speed motor 1, a coupler 2, a sheath 3, a beam expanding lens 4, a rotating tube 5, a collimated light source 6, a right-angle prism 7 and a high-speed photoelectric probe 8, wherein the collimated light source 6 is arranged on an incident light path of the right-angle prism 7, the beam expanding lens 4 is arranged on an emergent light path of the right-angle prism 7, the sky-screen target dynamic response performance detection and calibration device further comprises a time scale light hole 9 and a time scale light source 10, the rotating tube 5 is cylindrical with one closed end sealed, the closed end is a concave base, the base is made of a light-tight material, an upper annular glass tube is connected with a lower closed end, the high-speed motor 1 is connected with the central position of the bottom of the closed end of the rotating tube 5 through the coupler 2, a pair of time scale light holes 9 are arranged on an annular side, the time scale light source 1O is fixedly arranged in the hollow tube; the high-speed photoelectric probe 8 is arranged outside the glass rotating pipe, and the probe is positioned on the axis of the hollow pipe.
The time-scaled light source 10 is a point light source.
The timing mark light hole 9 is a hole formed in the side wall of the base of the rotating tube 5, and the light emitted by the timing mark light source 10 can pass through the timing mark light hole.
The outer sides of the beam expanding lens 4, the rotating tube 5, the collimating light source 6 and the right-angle prism 7 can be provided with a sheath 3 so as to avoid collision and damage to corresponding parts during carrying and moving.
The beam expanding lens 4, the collimating light source 6, the right-angle prism 7 and the high-speed photoelectric probe 8 are all fixed by a fixing bracket and the like, and the structure capable of fixing the positions can be adopted.
A gap is arranged between the hollow pipe and the inner wall of the rotating pipe 5 to ensure that the rotating pipe 5 and the rotating pipe are not contacted when rotating, and the hollow pipe does not rotate along with the rotating pipe 5. The hollow pipe can be fixed by a connecting rod fixed on the upper part and other structures.
The verification principle, the detection and the verification method of the device are as follows:
the method comprises the following steps of (1) imprinting a lighttight image of a bullet (or other target) with a reduced ratio (or deformation) on a glass rotating tube 5, wherein the glass rotating tube 5 can rotate under the drive of a high-speed motor 1; two timing light holes 9 are arranged on a base fixedly connected with the glass rotating tube 5, the two holes are coaxial, the axis of the two holes is vertically intersected with the axis of the glass rotating tube 5, and the base is light-proof and rotates together with the glass rotating tube 5. The time scale light source 10 is arranged in the rotating tube and is fixed, only when the time scale light hole 9 rotates to coincide with the detection optical axis of the high-speed photoelectric probe 8, the high-speed photoelectric probe 8 can receive the light emitted by the time scale light source 10, and a series of time scale pulse signals can be formed during rotation; meanwhile, the light collected by the collimation light source 6 is converted into the light source of the backdrop target by the right-angle prism 7, the emitted light forms projection light and irradiates a projection screen after penetrating through the glass rotary tube 5, when the high-speed motor 1 drives the glass rotary tube 4 for printing and engraving a shot (or other target) image with a reduction ratio (or deformation) to rotate, a shadow image moving at high speed is formed on the projection screen, the luminous flux change is caused, and the backdrop target can output a bullet pulse in a pulse signal mode.
Referring to fig. 2, because the position of the target image on the glass rotary tube 5 and the time scale light aperture 9 maintain an accurate positional relationship, that is, the plain line where the characteristic point of the target image on the glass rotary tube 5 is located coincides with the plain line where the time scale line is located. If the time for the time scale light source 1O to reach the projection screen from the glass rotating tube 5 is neglected, the overlapping form of the shadow image on the screen and the sky screen target detection light curtain can be exactly known while the high-speed photoelectric probe 8 outputs the time scale pulse.
The narrow time scale pulse output by the high-speed photoelectric probe 8 on the device is used as a reference moment, and the bullet-shaped pulse output by the backdrop target is contrastively analyzed, so that the space-time corresponding relation between the bullet-shaped pulse output by the backdrop target and the position of the tested target penetrating through the light curtain can be obtained, and the space-time performance detection and verification of the output signal of the backdrop target are completed.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (2)
1. The utility model provides a sky curtain target dynamic response performance detects calibrating installation, includes high-speed motor (1), shaft coupling (2), sheath (3), beam expanding lens (4), changes pipe (5), collimated light source (6), right angle prism (7), high-speed photoelectric probe (8), and collimated light source (6) set up in the incident light path of right angle prism (7), and beam expanding lens (4) set up on the emergent light path of right angle prism (7), its characterized in that: the timing mark device is characterized by further comprising timing mark unthreaded holes (9) and timing mark light sources (10), the rotating pipe (5) is cylindrical, one end of the rotating pipe is closed, the closed end of the rotating pipe is an inwards concave base, the base is made of light-tight materials, an upper annular glass pipe is connected with the closed end of the lower portion of the rotating pipe, the high-speed motor (1) is connected with the center of the bottom of the closed end of the rotating pipe (5) through a coupler (2), a pair of timing mark unthreaded holes (9) are formed in the annular side wall of the base in the diameter direction, a light hollow pipe is horizontally arranged between the pair of timing mark unthreaded holes (9), a rotating gap is formed between the hollow pipe and the inner wall of the base of the; the high-speed photoelectric probe (8) is arranged outside the glass rotating pipe, and the probe is positioned on the axis of the hollow pipe.
2. The backdrop target dynamic response performance detection and assay device of claim 1, wherein: the detection and verification method comprises the following steps:
the narrow time scale pulse output by the high-speed photoelectric probe (8) is used as a reference moment, and the bullet-shaped pulse output by the backdrop target is contrastively analyzed, so that the time-space corresponding relation between the bullet-shaped pulse output by the backdrop target and the position of the tested target penetrating through the light curtain can be obtained, and the time-space performance detection and verification of the output signal of the backdrop target are completed.
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| CN202010227850.0A CN111412796B (en) | 2020-03-27 | 2020-03-27 | Detection and calibration device and method for dynamic response performance of backdrop target |
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| CN202010227850.0A CN111412796B (en) | 2020-03-27 | 2020-03-27 | Detection and calibration device and method for dynamic response performance of backdrop target |
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| US6414747B1 (en) * | 2000-01-14 | 2002-07-02 | Charles E. Hardy | Infrared photodetector apparatus for measuring projectile velocity |
| RU2005100996A (en) * | 2005-01-18 | 2006-06-20 | Институт прикладной механики УрО РАН (RU) | DEVICE FOR DETERMINING EXTERNAL BALLISTIC PARAMETERS OF THE THROWING ELEMENT USING PHOTO LINE AND LIGHT SCREENS |
| CN2833499Y (en) * | 2005-09-23 | 2006-11-01 | 西安工业学院 | Light screen target light energy detector |
| US7278290B1 (en) * | 2006-07-17 | 2007-10-09 | The United States Of America As Represented By Secretary Of The Navy | Projectile impact energy and location measurement system |
| CN101957183A (en) * | 2010-09-26 | 2011-01-26 | 深圳大学 | Structured light projection-based high-speed three-dimensional measurement system |
| CN102944698A (en) * | 2012-11-29 | 2013-02-27 | 西安工业大学 | Sky-screen target light curtain parameter calibrating device and method |
| CN108731555A (en) * | 2018-05-25 | 2018-11-02 | 西安工业大学 | A kind of projectile measurement system canopy of the heavens trigger device and its triggering method |
| CN110645848A (en) * | 2019-09-03 | 2020-01-03 | 西安工业大学 | Pellet landing coordinate and speed measuring device |
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2020
- 2020-03-27 CN CN202010227850.0A patent/CN111412796B/en active Active
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| US6414747B1 (en) * | 2000-01-14 | 2002-07-02 | Charles E. Hardy | Infrared photodetector apparatus for measuring projectile velocity |
| RU2005100996A (en) * | 2005-01-18 | 2006-06-20 | Институт прикладной механики УрО РАН (RU) | DEVICE FOR DETERMINING EXTERNAL BALLISTIC PARAMETERS OF THE THROWING ELEMENT USING PHOTO LINE AND LIGHT SCREENS |
| CN2833499Y (en) * | 2005-09-23 | 2006-11-01 | 西安工业学院 | Light screen target light energy detector |
| US7278290B1 (en) * | 2006-07-17 | 2007-10-09 | The United States Of America As Represented By Secretary Of The Navy | Projectile impact energy and location measurement system |
| CN101957183A (en) * | 2010-09-26 | 2011-01-26 | 深圳大学 | Structured light projection-based high-speed three-dimensional measurement system |
| CN102944698A (en) * | 2012-11-29 | 2013-02-27 | 西安工业大学 | Sky-screen target light curtain parameter calibrating device and method |
| CN108731555A (en) * | 2018-05-25 | 2018-11-02 | 西安工业大学 | A kind of projectile measurement system canopy of the heavens trigger device and its triggering method |
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Effective date of registration: 20221226 Address after: 710011 Room 1907, Building 1, Aerospace City Center Square, southeast corner of the intersection of Shenzhou Fifth Road and East Chang'an Street, Xi'an National Civil Aerospace Industry Base, Shaanxi Province Patentee after: Xi'an Jinge Information Technology Co.,Ltd. Address before: 710032 No. 2 Xuefu Middle Road, Weiyang District, Xi'an City, Shaanxi Province Patentee before: XI'AN TECHNOLOGICAL University |
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