A cylindrical light curtain speed measuring device and its speed measuring method

Abstract

The invention discloses a cylindrical surface light curtain speed-measuring device. The cylindrical surface light curtain speed-measuring device is formed by an inner side annular light source, an outer side annular light source, an inner side annular receiving device, and an outer side annular receiving device. The inner and outer side annular light sources and the inner and outer side annular receiving devices are fixed on the upper and lower horizontal planes through connecting rods. The outer side annular light source and the outer side annular receiving device are oppositely installed through the connecting rods. A light ray emitted by a light source is received in a space by the corresponding receiving device so as to form inner and outer side cylindrical light curtain surfaces. While an explosive placed on a concentrical axis is exploded, fragments are generated, and the fragments pass through the inner and outer side cylindrical light curtain surfaces successively. After a distance between two light curtain surfaces is known, a time measuring instrument is cooperated. The device is capable of realizing the measurement of a flight speed of the fragments, and solving the technical problem that a current plane light curtain speed-measuring device cannot measure the speed of the fragments in arbitrary flight directions.

Description

technical field [0001] The invention relates to the technical field of shooting range testing, in particular to a cylindrical light curtain speed measuring device and a speed measuring method thereof. Background technique [0002] In the development and production of various barrel weapons, bullets, propellants and warheads, in order to effectively judge the effectiveness of such weapons, it is necessary to accurately measure the flight speed of projectiles or fragments. At present, the more commonly used speed measurement method in the weapon production verification shooting range is the method of the section device speed measurement device combined with the time measuring instrument, that is, two speed measurement devices are placed at a certain distance along the projectile flight speed direction, and the projectile passes through the two measurement devices. The time of the output signal is calculated to calculate the average flight speed of the projectile. At present, ...

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the speed of fragments flying in any direction cannot be measured, the present invention provides a cylindrical light curtain speed measuring device and its speed measuring method, which effectively detects that the target surface is cylindrical, and is formed by arranging concentric light sources and receiving devices. Inner and outer cylindrical light curtain surfaces, so as to realize the measurement of the flight speed of prefabricated fragments flying in any direction

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