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Short-circuit protection circuit and state switching method for initiating explosive device of aircraft

A short-circuit protection circuit and state switching technology, which is applied in the direction of electronic protection circuit testing, electronic circuit testing, circuit breaker testing, etc., can solve problems such as misoperation, and achieve the effects of avoiding state switching, improving efficiency, and avoiding the risk of misoperation

Active Publication Date: 2017-03-01
CHINA ACAD OF LAUNCH VEHICLE TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art, provide a short-circuit protection circuit and state switching method for aircraft pyrotechnics, and solve the problem of human misoperation caused by traditional manual operation of short-circuit protection plugs

Method used

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  • Short-circuit protection circuit and state switching method for initiating explosive device of aircraft
  • Short-circuit protection circuit and state switching method for initiating explosive device of aircraft

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Embodiment Construction

[0033] See the short-circuit protection circuit for aircraft pyrotechnics figure 1 , Initiating device short circuit protection circuit consists of three parts: state switching module, detection module and ground control module. The ground control module is set in the ground test equipment, and the state switching module and detection module are set in the current limiting resistor box. The protection detection circuit is set in the current-limiting resistance box and the ground test equipment.

[0034] The ground control module realizes the function of issuing pyrotechnic product protection instructions and release instructions, and is set at the end of the ground test equipment. figure 1 The mid-ground test equipment adopts the k1 and k2 contact mutual exclusive circuit design, and sets an ammeter in the pyrotechnics protection instruction and the release instruction path for testing to ensure that the pyrotechnics protection instruction and the release instruction are issued eff...

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Abstract

The invention relates to a short-circuit protection circuit and state switching method for an initiating explosive device of an aircraft. The short-circuit protection circuit comprises a state switching module, a detection module and a ground control module. First set of normally closed contacts of two magnetic latching relays are connected in series and then connected to the two ends of the initiating explosive device in parallel. A detection resistor is connected between a normally opened connection terminal and a normally closed connection terminal of the second set of contacts of each magnetic latching relay. The ground control module comprises a ground power supply, a relay K1, a relay k2, a protection switch and a protection releasing switch. The short-circuit protection circuit solves the problem that device grounding test interface is complex and the cable network is heavy caused by a conventional short-circuit protection plug. Error manual operation caused by a conventional manual short-circuit protection plug and interface ablation caused by high temperature due to a conventional short-circuit protection plug under severe environment can be overcome.

Description

Technical field [0001] The invention relates to a short circuit protection circuit of an aircraft pyrotechnic product and a state switching method, belonging to the field of short circuit protection. Background technique [0002] Pyrotechnics is an important component involved in the various sub-systems of the aircraft. Its working status directly affects the realization of the mission objectives of the aircraft. Especially for space vehicles, space vehicles, and unmanned aerial vehicles, they have to undergo ground testing and ascent. Various aircraft mission stages, such as the flight stage, the on-orbit operation stage, and the reentry and return stage, cause the pyrotechnics to be in a complex force, heat, electromagnetic and space environment. Different from traditional rockets, missiles and other aircraft, it is necessary to ensure the safety and reliability of unexploded explosives during transportation and testing of the aircraft and after landing. This raises the issue o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/28G01R31/327G01R27/02
CPCG01R27/02G01R31/2827G01R31/3278
Inventor 赵岩曾贵明杨友超张翔李海伟姜爽潘江江徐海运梁君欧连军石庆峰李然郎鹏飞李智李克勤孙建刘理泽刘海光陈雷
Owner CHINA ACAD OF LAUNCH VEHICLE TECH
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