X-ray-based muzzle initial velocity measuring device

A measuring device and X-ray technology, applied in the field of precision test and measurement, can solve problems such as huge impact on measurement accuracy, interference with conventional measuring instruments, damage to the mechanical effect of gunpowder gas, etc., to achieve accurate measurement results and high test accuracy

Active Publication Date: 2017-08-18
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The high-speed exit of the projectile from the muzzle is accompanied by a large amount of muzzle flame and plasma flow, which has a great impact on the measurement accuracy of existing measuring instru

Method used

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  • X-ray-based muzzle initial velocity measuring device
  • X-ray-based muzzle initial velocity measuring device
  • X-ray-based muzzle initial velocity measuring device

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Embodiment

[0030] see figure 1 , figure 2 , a kind of muzzle velocity measuring device based on X-ray of the present embodiment mainly includes X-ray machine 110, high voltage power supply module A, trigger module B, detector C, signal conditioning unit D and timer 190 and DSP data processing module 200.

[0031] The high voltage probe 150 is installed on the inner side wall of the projectile track 160 at the rear area of ​​the projectile position, and serves as an input signal of the trigger unit 140 . Cannonball 161 is placed in the cannonball track 160 before launching, and is stuck on the backseat of cannonball track 160. The trigger unit 140 receives the signal of the high-voltage probe 150, triggers the level internally, and transmits it to unit A, which supplies power to the X-ray machine 110, and the emitted X-ray passes through the aluminum plate 100 with a rectangular through hole to form an X-ray narrow light curtain 101 . The detector 170 is placed opposite to the X-ray ...

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Abstract

The present invention relates to an X-ray-based muzzle initial velocity measurement device. The device comprises a triggering unit, an X-ray generating device, an X-ray detection and acquisition unit and a data analysis processing module; when a projectile passes through an X-ray narrow light curtain, the current of detectors changes; after passing through a conditioning circuit, signals, on one hand, are transmitted to a timer, so that the timer can record shielding time, on the other hand, the waveforms of the signals are displayed on a waveform display module; by means of digital image processing, an angle between the connection line of the falling edge of a first path of signals and the falling edge of the last path of signals and a vertical line, namely, the deviation angle of the projectile at a muzzle can be measured; and an X-ray single-light screen test method is adopted to calculate the initial velocity of the projectile at the muzzle. With the device of the invention adopted, the initial velocity of the projectile at the muzzle under strong electromagnetic interference and strong muzzle flame conditions which cannot be measured by a traditional method can be accurately measured; and the single-light screen measurement method can assist in eliminating inconsistencies in multi-light curtain processing speed and delay and errors caused by incapability of realizing completely parallel multi-light curtain beams, and the single-light screen measurement method has high test accuracy.

Description

technical field [0001] The invention belongs to the field of precision test and measurement, in particular to an X-ray-based muzzle velocity measuring device. Background technique [0002] The measurement of projectile initial velocity is one of the most basic range tests of artillery, and also one of the basic parameters to characterize the performance of artillery. The initial velocity of the projectile is an important parameter to test the energy distribution of the artillery. It is the original parameter for the design of the gun body and the anti-recoil device. It can identify the pros and cons of the launch system and its life. In addition, the muzzle velocity also has a great influence on the accuracy of the artillery, and its accurate measurement can effectively repair the deviation. [0003] At present, the methods for measuring projectile velocity mainly include chronometer velocity measurement method, radar velocity measurement method, photographic method and mec...

Claims

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Application Information

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IPC IPC(8): G01P3/68
CPCG01P3/685
Inventor 顾金良卢东东夏言周彤吴小蓉王雪君
Owner NANJING UNIV OF SCI & TECH
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