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Roll angle detection method of directional firework shell and detection device thereof

A detection method and technology of firework bombs, which are applied in the field of roll angle detection method and detection device of directional fireworks bombs, can solve the problems of inapplicable fireworks roll attitude detection, complex system, high cost of gyroscope, etc., and achieve low cost, The effect of small size and simple circuit

Inactive Publication Date: 2013-09-25
NANJING UNIV OF SCI & TECH
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Problems solved by technology

Although the attitude detection and control of traditional missiles is very mature, the cost of the gyroscope used for attitude detection is very high and the system is complex, which is not suitable for the roll attitude detection of fireworks bombs.

Method used

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  • Roll angle detection method of directional firework shell and detection device thereof
  • Roll angle detection method of directional firework shell and detection device thereof
  • Roll angle detection method of directional firework shell and detection device thereof

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Embodiment

[0034] Assuming that the launch site of the fireworks is Xinjiekou, Nanjing, its latitude is: 32°03′08.65″ north latitude, and its longitude is: 118°46′43.51″ east longitude, then its magnetic inclination is 48.0979°, and its magnetic declination is -4.77377° . Let the shooting direction be due east, that is, The shooting angle is θ 0 =75°, then φ can be calculated 0 =11.79°. If the detonation rotation angle required by the fireworks is α=90°, then the required detonation orientation is φ=101.79°. When the measured β=90°, the angle still lacked 11.79°, and the attitude control device was required to make the fireworks bomb clockwise turn 11.79° again. When the signal phase β=101.79°, the firework bomb is just in the direction required for detonation.

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Abstract

A method for measuring a roll angle of a directional firework projectile comprises steps of determining and inputting information related to launching a firework projectile, calculating local magnetic inclination angle and local magnetic declination angle, calculating a reference angle and a detonation angle, loading and launching the firework projectile, detecting geomagnetic signals and calculating phases of the geomagnetic signals, calculating detonation angle deviations and inputting the deviations to a posture control device continuously. An apparatus for measuring a roll angle of a directional firework projectile is provided.

Description

technical field [0001] The invention relates to a detection technology for firework bombs, in particular to a roll angle detection method and a detection device for directional fireworks bombs. Background technique [0002] With the development of pyrotechnics technology, various new types of pyrotechnic bombs continue to emerge, among which directional pyrotechnic bombs need to act under a given rolling attitude in order to give the required special effects. Although the attitude detection and control of traditional missiles is very mature, the cost of the gyroscope used for attitude detection is very high and the system is complex, which is not suitable for the roll attitude detection of fireworks bombs. Contents of the invention [0003] The purpose of the present invention is to provide a roll angle detection method and detection device for directional fireworks bombs, so that the fireworks bombs can be detonated at the best corners to produce fireworks with special ef...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F42B35/02G01R33/09
CPCF42B4/06F42B15/01
Inventor 张合程翔丁立波张祥金李豪杰马少杰王志明
Owner NANJING UNIV OF SCI & TECH
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