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A kind of aircraft pyrotechnic short circuit protection circuit and state switching method

A short-circuit protection circuit and state switching technology, applied in 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, ingenious structure, and high reliability.

Active Publication Date: 2019-03-26
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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  • A kind of aircraft pyrotechnic short circuit protection circuit and state switching method
  • A kind of aircraft pyrotechnic short circuit protection circuit and state switching method

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Embodiment Construction

[0033] Aircraft pyrotechnic short-circuit protection circuit see figure 1 , the pyrotechnics short-circuit protection circuit consists of three parts: a state switching module, a detection module and a ground control module. 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 protection instructions and release instructions, and is installed at the end of the ground test equipment. figure 1 In the ground test equipment, the contacts of k1 and k2 are designed to be mutually exclusive, and an ammeter is set in the path of the pyrotechnic protection command and the release command for detection, so as to ensure that the pyrotechnic protection command and the release command are issued effectively and will not be issued at the same time.

[0035] The state switching module realizes the protection function of pyrotechnics, and is installed at th...

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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 and a state switching method for aircraft pyrotechnics, belonging to the field of short-circuit protection. Background technique [0002] Explosives are an important component of various subsystems of the aircraft, and their working status directly affects the realization of the mission objectives of the aircraft. Various mission phases of the aircraft, such as the flight phase, the in-orbit operation phase, and the re-entry phase, lead to the complex force, heat, electromagnetic and space environment of the pyrotechnics. Different from traditional rockets, missiles and other aircraft, it is necessary to ensure the safety and reliability of all pyrotechnics on the aircraft during the transportation and testing of the aircraft and after landing. higher requirements. [0003] The pyrotechnics on the aircraft are prone to misexplosion during testing and transportation. Usually, the pyrotechnics...

Claims

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Application Information

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Patent Type & Authority Patents(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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