Laser multi-target vertical target measuring device and measuring method

Abstract

The invention discloses a laser multi-target vertical target measuring device and measuring method. The device comprises a plurality of detecting light curtain units and a power supplying and signal processing unit. Each detecting light curtain unit is correspondingly composed of a laser, a photoelectric detecting array and a narrowband filter. The lasers and the photoelectric detecting arrays are in one-to-one correspondence and form a plurality of detecting light curtain surfaces. A plurality of narrowband filters are located at one side, close to the lasers, of the plurality of photoelectric detecting arrays. The method comprises the steps of: processing signals of projectile projection output by the plurality of photoelectric detecting arrays, recognizing the position of the projectile projection, and solving a projectile landing coordinate according to a coordinate measuring model of the measuring device. The laser multi-target vertical target measuring device and measuring method have the advantages that the coordinate measurement in the case of any number of projectiles landing simultaneously is realized without a high speed camera, the anti-interference capability is high, the measuring theory is simple, the manufacturing cost is low, the application range is wide, and the device can be used both indoors and outdoors.

Description

technical field [0001] The invention belongs to the technical field of ballistic parameter testing in shooting ranges, and in particular relates to a laser multi-target vertical target measuring device and a measuring method. Background technique [0002] In the development and production of guns, cannons, and ammunition, the shooting accuracy and vertical target density of bullets are key parameters that need to be tested frequently. Usually, the test of dispersion parameters such as shooting density and vertical target accuracy is by measuring the projectile Or the target coordinates of fragments, etc., further adopt the mathematical statistics method and calculate according to the corresponding formula. Therefore, in general, to measure the dispersion parameters such as the shooting density of weapons, the X and Y coordinates of the projectile’s target should be measured first. [0003] The development and production of new weapon systems pose new challenges to the testin...

AI Technical Summary

Problems solved by technology

When fragments fly by, the three cameras will successively take pictures of the flight attitude of the fragment group according to a certain time interval (40-80μs), and finally through image analysis of two or more adjacent pictures, the predetermined area can be calculated quantitatively The flight speed and dispersion trend of the projectile, this method also has the disadvantages that the sensitivity is greatly affected by the environment, it is easy to miss, the system is complicated, the equipment is expensive, and it depends on imports.

[0005] In view of the situation where two projectiles hit the target at the same time, the article "Research on the Method of Testing the Vertical Target Density of Double-barreled Weapons with Seven Light Curtain Arrays" by Ni Jinping of Xi'an Technological University proposed to use seven detection light curtain arrays to detect the double-barreled weapons. The target coordinates of the projectile are measured. This scheme uses seven light curtains to detect the time information of the projectile flying over the predetermined area, and judges and removes false projectile signals through a certain logical relationship. However, the scheme and algorithm are complicated, especially the seven detection light curtains The realization of the actual project is more complicated

[0006] Existing patents also propose some coordinate measurement methods for simultaneous landing of two or three projectiles, but there are certain problems. For example, the patent "Measuring Device and Method for Projectile Velocity and Target Coordinates of Multi-barreled Salvo Weapons" proposes to use Based on the measurement principle of six light curtains, each light curtain is subdivided into multiple small light curtains to measure the coordinates of multiple projectiles landing at the same time. When the target lands at the same time and the target position is in the same light curtain interval, the system also cannot distinguish, which eventually leads to the inability to measure

For example, the patent "Measurement Method and Device for Projectile Flight Velocity and Target Coordinates of Double-barreled Salvo Weapons" proposes to use eight detection light curtain arrays to measure the projectile target coordinates of double-barreled weapons. The system device and algorithm are complex and practical. Engineering is more difficult to achieve

The patent "Coordinate Measuring Device and Measuring Method for Simultaneous Targeting of 2-3 Projectiles" proposes a measuring device and method based on a high-speed color line array CCD camera combined with a line laser light source. The high-speed line array used in this scheme The color camera is expensive and depends on imports, so the price of the system is relatively expensive, and this method cannot be used for the situation where 4 or more projectiles hit the target at the same time

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