On-orbit fault early warning and discrimination device of spacecraft

Abstract

The invention discloses an on-orbit fault early warning and detection device of a spacecraft. The on-orbit fault early warning and detection device comprises a detector shell, three groups of detection units, an energy analyzer, a low-energy charged particle detector and a high-energy charged particle detector. The three groups of detection units consist of temperature sensors and total dose sensors and are used for detecting radiation effects in an unshielded state, an equivalent shielding thickness state of a cabin wall of the spacecraft, and a total equivalent shielding layer thickness state inside the spacecraft respectively. The energy analyzer is used for detecting electrons lower than 100keV. The low-energy charged particle detector and the high-energy charged particle detector respectively detect low-energy electrons / protons and high-energy electrons / protons. According to the invention, graded detection of electrons and protons with different energy can be realized; and total dose data and dose rate data at different positions on the surface and in the spacecraft can be obtained at the same time. The on-orbit fault early warning and detection device has characteristics of multiple functions, accurate spacecraft on-orbit fault early warning, accurate fault discrimination and the like.

Description

technical field [0001] The invention belongs to the technical field of spacecraft on-orbit situation detection, and specifically relates to a spacecraft on-orbit fault early warning detection device. Background technique [0002] The space radiation environment mainly comes from stellar radiation belts, solar cosmic rays, and galactic cosmic rays, and its main components are electrons, protons and a small amount of heavy ions. Among them, the Earth's radiation belt environment is one of the most important radiation environments affecting spacecraft in low-Earth orbit, and can usually be divided into the inner radiation belt and the outer radiation belt. During solar flares, a large number of high-energy protons, electrons, and heavy nuclear particles are emitted, which are called solar cosmic rays. Most of them are composed of protons, so it is also known as the solar proton event. The energy of solar cosmic ray particles generally ranges from 10 MeV to tens of GeV. Its c...

AI Technical Summary

Problems solved by technology

[0010] 4) The space radiation environment leads to the main reasons for spacecraft on-orbit failures

[0013] At present, there is no device for early warning and screening of spacecraft on-orbit failures at home and abroad, and it is impossible to realize a detection device for early warning and screening of spacecraft on-orbit failures

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