Method for monitoring inner electrified electric potentials of spacecraft

Abstract

The invention discloses a method for monitoring inner electrified electric potentials of a spacecraft and belongs to the technical field of anti-radiation reinforcement. The method includes manufacturing an inner electrified probe: the electrified probe utilizes a multi-layer circuit board structure, the inner electrified probe comprises a shielding housing, a multi-layer circuit board, a resistor and an electrometer; and the multi-layer circuit board comprises a substrate, dielectric layers and copper film layers, the substrate is arranged on the base layer, the dielectric layers are arranged on the substrate, and the numbers of the dielectric layers and the copper film layers are ten respectively and the dielectric layers and the copper film layers are crossed and stacked; and performing a electron beam irradiation test and measuring electric potentials at different depths inside dielectrics of the multi-layer circuit board by measuring electric potentials on led wires on the copper film layers. According to the method, electric potentials at points inside the dielectric layers can be monitored in real time, electrons with energy lower than 200keV can be prevented, and accordingly, inner electrification can be only monitored and effects of surface charging are eliminated.

Description

Technical field [0001] The invention relates to a method for monitoring the charged potential in a spacecraft, and belongs to the technical field of anti-radiation reinforcement. Background technique [0002] Spacecraft dielectric deep charging is also known as spacecraft internal dielectric charging. It refers to the process in which high-energy charged particles in space pass through the surface of the spacecraft and are transported and deposited inside the dielectric material of the spacecraft components to establish an electric field. When the electric field strength exceeds the breakdown threshold of the dielectric material, a discharge will occur, and the electromagnetic pulse interference generated by the discharge may damage the normal operation of the electronic system in the spacecraft. As the spacecraft electronics system uses highly integrated large-scale / ultra-large-scale microelectronic devices, the performance of the electronics system is improved, and it also beco...

AI Technical Summary

Problems solved by technology

[0003] The spacecraft deep medium charging monitor that has been carried so far directly measures the electron flux that causes the deep medium to be charged, and then judges the charging degree of the spacecraft based on experience, but it cannot directly and accurately measure the charging potential of the deep medium.

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