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 detonation control system for a pyrotechnic device, which is suitable for detonation control of various spacecraft pyrotechnic devices and a high-reliability, high-safety, high-current drive control device for similar applications. Background technique [0002] Various pyrotechnic devices are widely used on spacecraft to lock and release the movable parts of mechanism structures such as solar wings, antennas, star (ship) body connections, and propulsion pipelines. At this stage, domestic spacecraft generally set up independent pyrotechnic device initiation control devices to implement detonation control of spacecraft pyrotechnic devices. Since the reliability and safety of initiation control of pyrotechnic devices are directly related to the success or failure of the spacecraft's on-orbit missions, pyrotechnic device initiation control devices generally use relays to form 3 to 4 serial switches to complete the initiation switch co...

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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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