Grid-connection short circuit detection circuit for spacecraft rendezvous and docking

Abstract

A grid-connection short circuit detection circuit for spacecraft rendezvous and docking comprises an isolation module, a voltage divider module, a protective module and a voltage stabilizer module; the protective module, the voltage divider module and the isolation module are connected in sequence to form a voltage input branch; two ends of the voltage input branch are connected with positive cables of an external test voltage and grid-connection power supply channel respectively; the voltage divider module and the isolation module are connected in sequence to form a positive return wire isolation branch; two ends of the positive return wire isolation branch are used for connecting the positive cable of the grid-connection power supply channel and an output end which is intended for outputting hard ware telemetric data to a satellite digital-tube platform; the voltage stabilizer module is connected with the isolation module in sequence to form a telemetry output branch; two ends of thetelemetry output branch are connected with the output end and grounded, and a connection point between the voltage stabilizer module and the isolation module is connected with a negative cable of thegrid-connection power supply channel.

Description

technical field [0001] The invention relates to a spacecraft rendezvous and docking grid-connected short-circuit detection circuit, and is especially suitable for a source-end electronic stand-alone machine that needs to perform a safety inspection of a power supply path after the docking of different spacecraft is completed, and belongs to the technical field of power supply and distribution. Background technique [0002] In order to make better use of the space environment, it is necessary to build large spacecraft in space. However, due to the limited carrying capacity of existing vehicles, it is impossible to launch large spacecraft at one time. The current common method is to divide large spacecraft into small spacecraft and launch them into space in batches, and then carry out on-orbit assembly and docking in space. After the docking is completed, power supply starts between different small spacecraft. [0003] The power supply path between spacecraft bears the heavy ...

AI Technical Summary

Problems solved by technology

However, due to the limited carrying capacity of existing vehicles, it is impossible to launch large spacecraft at one time. The current common method is to divide large spacecraft into small spacecraft and launch them into space in batches, and then carry out on-orbit assembly and docking in space. After the docking is completed, different small spacecraft start to supply power

[0003] The power supply path between spacecraft is responsible for the transmission of electric energy. The normality of the power supply path is the basic condition for the spacecraft to complete the on-orbit mission. Once there is a short circuit problem in the power supply path, the equipment on the corresponding path will be damaged, causing heavy losses and leading to spaceflight failure. The launch task of the transmitter fails, and the short circuit fault is a fatal threat to the grid-connected power supply system

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