A test device and test method for fragment group spatial dispersion parameters

Abstract

The invention discloses a fragment group spatial distribution parameter test device and a test method. The test device includes a high-speed area array CCD target and an image acquisition instrument. The high-speed area array CCD target is placed in the detection area. The image acquisition instrument and the high-speed area array CCD target and the The upper computer is respectively connected by cables. The high-speed area array CCD target includes a triangular base and a housing. An optical lens is arranged on the upper surface of the housing. An area array CCD camera and an image acquisition unit are installed in the housing. There is a laser emitting unit, which is used to form a first-line laser detection light curtain and a second-line laser detection light curtain that intersect each other. The laser emission unit includes an emitting laser, a first laser optical lens, a second laser optical lens, a first quasi- Straight mirror, second collimating mirror and beam splitter. The invention can realize high-precision measurement of fragment group parameters, saves cost, is convenient to carry, and has flexible calibration.

Description

technical field [0001] The invention relates to the field of photoelectric testing, in particular to a testing device and testing method for fragment group spatial dispersion parameters. Background technique [0002] Parameters such as the dispersion and speed of the explosion fragments of weapons and ammunition are important parameters for the evaluation of target damage effectiveness. The evaluation of target damage effectiveness is closely related to the accurate acquisition of fragment group parameters. The randomness and uncertainty of the fragment group generated at the moment of explosion makes it very difficult to measure parameters such as the dispersion and velocity of warhead fragments, resulting in the inability to measure the effectiveness of fragment damage to targets. It provides an effective theoretical basis for analyzing the target damage evaluation system. [0003] At present, the test devices for projectile velocity and dispersion parameters mainly inclu...

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Problems solved by technology

[0002] Parameters such as the dispersion and speed of the explosion fragments of weapons and ammunition are important parameters for the evaluation of target damage effectiveness. The evaluation of target damage effectiveness is closely related to the accurate acquisition of fragment group parameters. The randomness and uncertainty of the fragment group generated at the moment of explosion makes it very difficult to measure parameters such as the dispersion and velocity of warhead fragments, resulting in the inability to measure the effectiveness of fragment damage to targets. It provides an effective theoretical basis for analyzing the target damage evaluation system

[0003] At present, the test devices for projectile velocity and dispersion parameters mainly include light curtain target test system, multi-light curtain intersection test system and multi-CCD intersection test system, etc., and there are certain problems in testing fragment groups; the light curtain target adopts array photoelectric emission The receiving principle tests the target parameters. It is an integrated target frame with a complex structure. The target surface is limited and cannot be set larger and cannot be flexibly arranged. When multiple fragment targets pass through the detection area, the test principle is difficult to match and identify them. Unable to distinguish; the multi-light curtain intersection test system uses an array detection light curtain to measure the target position, and at least seven light curtains are required to match multiple fragment targets through a certain logical relationship when testing the fragment group. The structure and algorithm are very complicated , the actual engineering implementation is very difficult; the multi-CCD intersection test system uses multiple linear array CCDs to form multiple target surfaces, and uses the method of space-time matching to test the dispersion parameters of fragment targets. At the same time, it is impossible to accurately obtain the intersection angle, resulting in low accuracy of the measurement target parameters, and there is a phenomenon of missing measurements, which cannot meet the test requirements for fragment group dispersion parameters.

[0004] In summary, the current existing technology cannot meet the test requirements of fragment parameters, and there is an urgent need for a new device and method that can meet the test requirements of fragment group spatial dispersion parameters

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