Initial velocity measuring device for X-ray light screen

Abstract

The invention discloses an initial velocity measuring device for an X-ray light screen. The device comprises a front X-ray light screen, a rear X-ray light screen, a probe, a front X-ray processing circuit, a rear X-ray processing circuit, a front X-ray light screen velocity processing module, a rear X-ray light screen velocity processing module and an average velocity calculation module. The probe is arranged on a gun barrel; the front X-ray light screen and the rear X-ray light screen are arranged on a projectile firing line; the front X-ray light screen is connected with the front X-ray processing circuit; the front X-ray light screen velocity processing module is connected with the front X-ray processing circuit and the average velocity calculation module; the rear X-ray light screen is connected with the rear X-ray processing circuit; and the rear X-ray light screen velocity processing module is connected with the rear X-ray processing circuit and the average velocity calculation module. An effective target-passing signal of the projectile can be captured accurately in an aftereffect region of bouche firing; and an instantaneous velocity of the projectile flying past two front and rear light screen targets as well as an average velocity of the projectile passing through the centers of the two light screen targets can be calculated based on the effective target-passing signal obtained by measurement.

Description

technical field [0001] The invention belongs to the field of test and measurement, and in particular relates to an X-ray light curtain muzzle velocity measuring device. Background technique [0002] The muzzle velocity is one of the important index parameters to characterize conventional weapons, ammunition and ballistic characteristics. In the research, production and product testing process of shooting weapons and ammunition products, the detection of muzzle velocity parameters is essential. There are two types of speed measurement methods currently used: the first type is the contact type. Although the contact type area target interception is reliable and easy to implement, it has disadvantages of low efficiency and affecting the flight of the projectile, and cannot be used for high-precision, high-speed required measurement, so contact zone intercepts are gradually replaced by non-contact zone intercepts. The second type is non-contact, but because the muzzle will prod...

AI Technical Summary

Problems solved by technology

There are two types of speed measurement methods currently used: the first type is the contact type. Although the contact type area target interception is reliable and easy to implement, it has disadvantages of low efficiency and affecting the flight of the projectile, and cannot be used for high-precision, high-speed required measurements, so contact zone intercepts are gradually replaced by non-contact zone intercepts

The second type is non-contact, but because the muzzle will produce a large amount of muzzle smoke and strong light radiation during the launch process, the muzzle will also generate a large amount of plasma when the electromagnetic gun is fired, which makes it impossible for general coil targets and photoelectric targets. It works normally on the muzzle of the gun and can only be placed outside the aftereffect area of ​​the projectile running

In "X-ray Intermediate Ballistic Instrument" (Nuclear Electronics and Detection Technology), Yang Bo disclosed a test system that uses X-rays to measure the velocity of the projectile at the muzzle, and uses the section technology to record the time difference between the two X-ray light curtain targets, so as to calculate The average speed of the projectile flight, but this method requires the X-ray machine to be turned on and off manually, which will make the device open for a long time and affect the life of the device. The subsequent processing circuit of the signal cannot filter out the interference signal very well, and can only measure the movement of the projectile. average speed

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