阅读说明：本技术 一种楔形光幕阵列测量阵列炮管弹丸初速的装置及方法 (Device and method for measuring initial speed of array gun barrel projectile by wedge-shaped light curtain array ) 是由 倪晋平 田会 刘建兵 郑倩瑛 卢红伟 于 2019-10-18 设计创作，主要内容包括：本发明公开了一种楔形光幕阵列测量阵列炮管初速的装置与方法,所述装置由楔形光幕阵列、信号处理与放大模块及连接杆组成。楔形光幕阵列由两个或两个以上的楔形光幕组成,楔形光幕由光源和光电二极管接收模块组成。所述两套相同的测量装置距离一定间隔布放,配备相应的测试仪或信号采集装置,当弹丸先后穿过两套测量装置时,各楔形光幕输出弹丸的过幕信号,根据区截测速原理及楔形光幕阵列的空间位置关系,可以实现阵列炮管初速的测量。本发明结构形式简单,布靶方便,适用于阵列炮管齐射连发弹丸初速的测试。(The invention discloses a device and a method for measuring the initial speed of an array gun barrel by a wedge-shaped light curtain array. The wedge-shaped light curtain array consists of two or more wedge-shaped light curtains, and each wedge-shaped light curtain consists of a light source and a photodiode receiving module. The two sets of same measuring devices are arranged at certain intervals, corresponding testers or signal acquisition devices are arranged, when the projectile successively passes through the two sets of measuring devices, the wedge-shaped light screens output a projectile passing screen signal, and the initial speed of the array gun barrel can be measured according to the zone interception speed measurement principle and the spatial position relation of the wedge-shaped light screen array. The invention has simple structure and convenient target distribution, and is suitable for the initial speed test of the simultaneous-firing continuous-shooting projectile of the array gun barrel.)

1. The utility model provides a wedge light curtain array measures device of array gun tube initial velocity, includes wedge light curtain array, signal processing and amplifier module (3) and connecting rod (4), the light curtain array comprises two or more wedge light curtains, and the wedge light curtain comprises light source ()1 and more than two photodiode receiving module ()2, photodiode receiving module (2) more than two all set up perpendicularly in the light path of light source (1), and the perpendicular bisector of every photodiode receiving module (2) passes through light source (1) position, and the visual field edge of each wedge light curtain that forms all is provided with a pair of column laser standard indicator, and signal processing more than two corresponds photodiode receiving module (2) respectively with amplifier module (3).

2. The device for measuring the initial velocity of the array gun barrel by the wedge-shaped light curtain array according to claim 1, wherein the number of the photodiode receiving modules (2) and the number of the signal processing and amplifying modules (3) are four respectively.

3. The device for measuring the initial velocity of the array gun barrel by the wedge-shaped light curtain array according to the claim 1 or 2, characterized in that the light source (1) is a linear laser.

4. A method of measuring the initial velocity of an array gun barrel by the apparatus according to claim 1, comprising the steps of:

1) measuring the distance S between two sets of same devices;

2) when the array gun barrel projectile passes through the light curtain array areas of the two sets of devices, the first set of devices outputs the target passing signal t of the projectile_A1、t_B1、t_C1、t_D1…, the second set of devices outputs the passing target signal t of the projectile_A2、t_B2、t_C2、t_D2…

3) The flight speed of each projectile was calculated according to the following equation:

V_A＝S/(t_A2-t_A1)

V_B＝S/(t_B2-t_B1)

V_C＝S/(t_C2-t_C1)

V_D＝S/(t_D2-t_D1)

…。

Technical Field

The invention belongs to the technical field of target range testing, mainly relates to measurement of initial velocity of a plurality of bullets when shooting at the same time by adopting a light curtain array technology, in particular to a device and a method for measuring the initial velocity of the bullets and identifying the bullet sequence when two-door or four-door gun array gun barrels fire at the same time, and particularly relates to a device and a method for measuring the initial velocity of the bullets of the array gun barrels by using a wedge-shaped light curtain array.

Background

The multi-shot gun or the array gun barrel weapon has high shooting speed, and the multi-shot can form a bullet screen in space, can effectively destroy an attacking missile or unmanned aerial vehicle group, and is key equipment of a ship-borne low-altitude defense system. The dynamic bullet screen parameters of the projectile, particularly the flight parameters (including speed, landing position, attitude and the like) of the projectile, are the key for directly evaluating the weapon system performance, and need to be measured in the process of demonstration, development, production, verification and the like of the weapon, and the measurement of the projectile flight parameters can effectively accelerate the development and development of the multi-barrel gun or array barrel weapon.

The prior measuring device and method for the flying speed of the projectile mainly comprise a coil target, a canopy target, a light curtain target, a linear array CCD, a high-speed photography speed measuring device and the like, wherein the coil target is the earliest non-contact measuring device, and the coil target can not be used for the flying speed of the projectile made of non-metal materials due to the fact that the coil target takes electromagnetic induction as a measuring principle, and is easy to be interfered by external electromagnetic waves, so that the stability and the reliability are poor; the sky screen target and the light screen target are two types of measuring devices which are widely used based on the photoelectric principle, measuring devices with various structures, such as a horizontal sky screen target, an elevation angle sky screen target, a four-light-screen light screen target, a six-light-screen light screen target and the like, have been developed at present, have simple structures, higher measuring precision and low cost, and have been successfully used for testing single shot shots; the linear array CCD and the high-speed shooting and speed measuring device have high measurement accuracy, but the device is expensive in cost and has high requirements on subsequent processing circuits. The speed measuring device provided above has been successfully used for testing the speed of the shot launched by the single-tube gun, but when a plurality of gun tubes are launched simultaneously, a plurality of shots are launched, and the existing device cannot complete the measurement because the existing device cannot distinguish more than two shots which simultaneously pass through the detection field of view, so that the speed measurement of the shot launched by the array gun tubes cannot be realized.

Disclosure of Invention

The invention provides a device and a method for measuring the initial speed of an array gun barrel by a wedge-shaped light curtain array, which aim to solve the problem that the conventional speed measuring device cannot measure the flight speeds of a plurality of bullets when an array gun barrel weapon is fired at the same time.

The utility model provides a device that wedge light curtain array measured array gun barrel initial velocity, includes wedge light curtain array, signal processing and enlargies module and connecting rod, the light curtain array comprises two or more wedge light curtains, and the wedge light curtain comprises light source and the photodiode receiving module more than two, the equal perpendicular setting of photodiode receiving module more than two sets up in the light path of light source, and every photodiode receiving module's perpendicular bisector passes through the light source position, and the visual field edge of each wedge light curtain that forms all is provided with a pair of column laser standard indicator, and the signal processing more than two corresponds a photodiode receiving module respectively with the module of enlargiing.

Furthermore, the number of the photodiode receiving modules 2 and the number of the signal processing and amplifying modules 3 are four respectively.

Further, the light source 1 is a linear laser.

The method for measuring the initial speed of the array gun barrel by the device comprises the following steps:

1) measuring the distance S between two sets of same devices;

2) when the array gun barrel projectile passes through the light curtain array areas of the two sets of devices, the first set of devices outputs the target passing signal t of the projectile_A1、t_B1、t_C1、t_D1…, the second set of devices outputs the passing target signal t of the projectile_A2、t_B2、t_C2、t_D2…

3) The flight speed of each projectile was calculated according to the following equation:

V_A＝S/(t_A2-t_A1)

V_B＝S/(t_B2-t_B1)

V_C＝S/(t_C2-t_C1)

V_D＝S/(t_D2-t_D1)

…。

compared with the prior art, the invention has the advantages that:

1. the speed measuring light curtain is a light curtain array, the light curtain array is composed of a light source and two or more photodiode receiving modules, each photodiode receiving module corresponds to an independent signal amplification module, namely, a plurality of wedge-shaped light curtains are integrated, the space area division of a detection view field of the measuring device is realized, the time signals when a plurality of projectile signals pass through a target simultaneously are further distinguished, two sets of array gun tube initial speed measuring devices are arranged in front and at the back to form a zone-cut speed measuring device, and the speed measurement when a plurality of projectiles pass through the target simultaneously is easily realized.

2. Because the light collecting screens are arrayed integrally, the measuring device has simple structure and convenient target distribution during field test.

3. The measuring device can be used as a signal trigger device when being used independently, so that the device has various functions, multiple purposes, flexible combination and convenient assembly.

Drawings

FIG. 1 is a schematic view of a four-door gun barrel;

FIG. 2 is a schematic illustration of the composition of a single wedge-shaped light curtain;

FIG. 3 is a schematic view of a wedge-shaped four-light-curtain array measurement 2X 2 array gun barrel;

FIG. 4 is a schematic external dimension diagram of a wedge-shaped four-light-curtain array measuring device;

FIG. 5 is a schematic view of a wedge-shaped four-light-curtain array measuring 1X 4 array gun barrel;

FIG. 6 is a schematic view of a wedge-shaped two-light-curtain array measuring 1X 2 array gun barrel;

in the figure, 1-light source, 2-photodiode receiving module, 3-signal processing and amplifying module, 4-connecting rod, 5-light source structure frame, 6-receiving device structure frame and 7 laser standard indicator.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings.