On-bomb ignition circuit and method for underwater bomb

Abstract

According to the on-missile ignition circuit and method for the underwater missile, power supply starting of a lithium battery can be achieved, a three-section type ignition protection strategy is adopted to guarantee the ignition safety of an engine, and the three-section type ignition protection strategy is adopted to guarantee the ignition safety of the engine. The bare drain end of the control line does not cause the risk of short circuit. After power supply of the lithium battery is started through the relay, the voltage of the activation + and the voltage of the activation-are cancelled, due to the attribute of the relay, under the condition that the two terminals of the activation + and the activation-do not supply power, the two terminals are not electrically connected with an internal circuit, and the risk of short circuit cannot be caused when the two terminals are placed in a water environment; the mistaken ignition phenomenon of the engine can be prevented. Due to the fact that a three-section type ignition protection strategy is adopted, that is, the MCU is powered on firstly, then the ignition switch circuit is started through the MCU, and then the ignition output protection circuit is started, the engine can be started for ignition, and the ignition safety is guaranteed.

Description

technical field [0001] The invention relates to the technical field of bomb-on ignition circuits, in particular to a bomb-on ignition circuit and method for underwater bombs. Background technique [0002] There are many ways to ignite a solid engine, among which top-up ignition is a common way. Underwater bombs often have multi-stage solid motors, which run to a certain point according to the ballistic trajectory and ignite a certain engine to control the trajectory of the underwater bomb. Therefore, it is necessary to use the ignition module on the missile to ignite the engine during the operation of the missile body. Lithium batteries are mostly used to activate the motor, which has the advantages of large instantaneous current, long power supply duration, and small size. Due to the underwater environment, the airtightness of the projectile is high, so how to safely turn on the lithium battery power supply of the ignition circuit on the projectile and ignite the solid en...

AI Technical Summary

Problems solved by technology

Wireless signals need to achieve cross-media communication from air to underwater, the communication reliability is poor, and the implementation is relatively complicated; the wired method is used to control the opening of the lithium battery power supply

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