A control circuit for pyrotechnics with automatic protection function

Abstract

The invention discloses an initiating explosive device control circuit with an automatic protection function. The initiating explosive device control circuit comprises an initiating explosive device interface, a current signal detection interface and a control circuit arranged between the initiating explosive device interface and the current signal detection interface. Compared with the prior art, the fusion design between the initiating explosive device control circuit and the automatic protection function is realized by utilizing switching between normally-open and normally closed ends of a relay contact without increasing the circuit complexity, so that the automatic seamless switching problem of initiating explosive device testing, control and protection are solved.

Description

technical field [0001] The invention relates to a pyrotechnic product control circuit, in particular to an aircraft pyrotechnic product control circuit with automatic protection and automatic release of protection during path testing and detonation control. Background technique [0002] In the launch control process of the aircraft, completing the detonation control of pyrotechnics according to the scheduled work sequence, while avoiding false detonation of pyrotechnics, is the basic design requirement of the pyrotechnics control circuit of the aircraft test and launch system, and is also the safety of the aircraft weapon system. , One of the basic contents of reliability design, plays a vital role in ensuring the safety of weapon systems and personnel. [0003] For the currently commonly used pyrotechnic control circuit, it can be roughly divided into two modes according to the additional functions it provides besides the basic control functions such as detonation: 1) suppo...

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Problems solved by technology

[0004] The disadvantage of the above method is: the first type of control circuit needs to support the pyrotechnic product path test before the aircraft is fired, and the automatic short-circuit protection design for the positive and negative ends of the pyrotechnic product is abandoned, resulting in the accidental detonation of the pyrotechnic device. The risk increases; if the manual control link of pyrotechnic short-circuit protection is added, the risk of manual operation error will be increased, and the automation degree of the aircraft launch system will also be reduced

The second type of control circuit, because of the need to support the automatic short-circuit protection of pyrotechnics, gave up the design of the path test of pyrotechnics before firing, lost the testability of the pyrotechnics of the pre-launch aircraft, and reduced the launch of the aircraft. reliability

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