Multi-bus reliable power switching and disconnecting circuit of aircraft

Abstract

The invention discloses a multi-bus reliable power switching and disconnecting circuit of an aircraft. The multi-bus reliable power switching and disconnecting circuit comprises a first relay, a second relay, a third relay, a fourth relay, a fifth relay and a sixth relay. Through the adoption of logical interlock control design principle of the relay, a plurality of groups of relays cooperatively act to implement power switching and disconnecting cascade and sequential execution through driving of an external command; the problems of competition of circuits, excessive occupancy of resources and complex test process caused by excessive involving in the control of power switching and disconnecting by the ground can be solved. Through the application of the multi-bus reliable power switching and disconnecting circuit of the aircraft, the system power supply reliability is improved; the ground test design is also optimized; the test control process is simplified; the risk caused by faulty operation can be effectively avoided.

Description

technical field [0001] The invention relates to an aircraft multi-bus reliable power transfer and power-off circuit, which belongs to the field of electrical design. Background technique [0002] There are multiple power supply buses on the aircraft, generally including instrument electrical bus (hereinafter referred to as B bus), pyrotechnic electrical bus (hereinafter referred to as H bus), steering motor electrical bus (hereinafter referred to as D bus), etc. In order to realize the reliable execution of power transfer and power-off actions of multiple power supply buses during the test process, it is necessary to design a reasonable power transfer and power-off control circuit to ensure the uninterrupted power supply switching of each bus from the ground to the battery on the aircraft and the power transfer between multiple buses. and orderly execution of power outages, so as to ensure the stable and normal operation of electrical equipment on the aircraft. [0003] In ...

AI Technical Summary

Problems solved by technology

[0005] (1) The power transfer of each bus is judged by the ground, which is prone to competition problems between lines caused by improper condition trigger settings, resulting in the failure of continuous power transfer of the bus, which affects the stability of the power supply of the equipment on the aircraft;

[0006] (2) The busbars controlled by the ground equipment are turned on and off separately, which requires the ground to participate in the status judgment and execution of the transmission, and consumes more resources;

[0007] (3) The sequence of multi-bus power transfer and power-off needs to be strictly guaranteed, and the requirements for reliable control of the process and timing of ground equipment are high. The test process is complicated, and misoperation and timing errors are prone to cause aircraft status abnormalities and failures.

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