Initiating explosive device ignition circuit and module

Abstract

The invention discloses an initiating explosive device ignition circuit and module. The initiating explosive device ignition circuit comprises an ignition control circuit and an initiating explosive device state detection circuit which are connected with each other, wherein the ignition control circuit adopts an ignition power supply and a control power supply and is used for controlling the ignition power supply applied to an initiating explosive device to be switched on or off according to a control instruction; the initiating explosive device state detection circuit adopts a detection power supply, two input ends of the initiating explosive device state detection circuit are connected to two ends of the initiating explosive device in parallel, and the initiating explosive device state detection circuit is used for detecting whether the ignition power supply applied to the initiating explosive device is switched on or not; and the voltage value of the ignition power supply is equal to that of the control power supply. According to the initiating explosive device ignition circuit and module, a time delay circuit is arranged in the ignition control circuit, so that electromagnetic interference is reduced, and meanwhile, the voltage of an ignition instruction is reduced, so that the voltage requirement of an electromagnetic isolation circuit is reduced, and the application range of an electromagnetic isolator is expanded.

Description

technical field [0001] The invention relates to the technical field of pyrotechnic ignition, in particular to a pyrotechnic ignition circuit and module. Background technique [0002] At present, with the development of aviation and aerospace technology, a large number of equipment and facilities on the aircraft are put into operation by means of step-by-step deployment and release. The device is folded inside the aircraft or fixed on the external hardpoint through the pressing point before deployment or release. After entering the track, the control system needs to unlock the pressing point, and the equipment will realize the predetermined function after unfolding. The unlocking of the pressing point is generally realized by bridge wire electric detonation pyrotechnics. [0003] The ignition control of pyrotechnic products is generally realized by relays. [0004] However, the pyrotechnic ignition circuit controlled by conventional relays, such as figure 1 As shown, the ...

AI Technical Summary

Problems solved by technology

[0004]However, conventional relay-controlled pyrotechnic ignition circuits, such as Figure 1 shows that the input side of the magnetic isolation circuit requires a relatively high input voltage, and its output side shares a part of the circuit with the ignition power supply, and the ignition power supply is relatively high. The voltage will affect the relatively low voltage of the detection power supply and affect the rest of the detection equipment; and there are common phenomena such as electromagnetic interference, arcing, and control signal jitter

For control systems with relatively high requirements, it is often necessary to design complex protection circuits and redundancy to improve the reliability of the ignition circuit, which correspondingly increases the size, weight and system complexity of the entire system

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