Firer device detonation control system for control through MOSFET

Abstract

A firer device detonation control system for control through a MOSFET comprises an initiating explosive device pulse bus switching circuit, a detonation current measuring circuit, a program control unit and N sets of firer device detonation control circuits connected in parallel. The initiating explosive device pulse bus switching circuit controls the connection and disconnection of magnetic latching relay switches which are connected in series in a positive wire and a return wire of an initiating explosive device ignition device detonation passage according to a pulse instruction. The firer device detonation control circuits are used for building detonation loops of firer devices and limiting currents of the detonation loops so as to generate reliable denotation currents meeting the requirement of initiating explosive device detonation and play a role in protecting the detonation passage. The detonation current measuring circuit collects transient currents during denotation of the firer devices and maintains and outputs current signals. The program control unit is used for outputting control pulses of denotation at fixed time of the firer devices according to a specified action sequence after a satellite and a rocket are separated, and controlling the corresponding firer device detonation control circuits to conduct denotation of the specified firer devices.

Description

technical field [0001] The invention relates to a pyrotechnic device detonation control system, which is suitable for the detonation control of various spacecraft pyrotechnic devices, as well as high-reliability, high-safety and high-current drive control devices for similar applications. Background technique [0002] A variety of pyrotechnic devices are widely used on spacecraft for the locking and release of structural movable parts such as solar wings, antennas, star (ship) body connections, and propulsion pipelines. At this stage, domestic spacecraft are generally equipped with independent pyrotechnic device detonation control devices, which are used to implement detonation control of spacecraft pyrotechnic devices. Since the reliability and safety of the detonation control of the pyrotechnic device is directly related to the success or failure of the spacecraft's in-orbit flight mission, the detonation control device of the pyrotechnic device generally uses relays to fo...

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Problems solved by technology

[0003] With the development of spacecraft mechanism design and the increase in the use of movable parts, the demand for pyrotechnic devices is also gradually increasing. Therefore, the design of the detonation control system for pyrotechnic devices in the form of relays will restrict the miniaturization of the pyrotechnic device detonation control system , integration and modular development direction

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