On-orbit monitoring device for electrostatic discharge pulse of spacecraft

Abstract

The invention belongs to the technical field of space radiation effects and reinforcement, and particularly relates to an on-orbit monitoring device for an electrostatic discharge pulse of a spacecraft. The on-orbit monitoring device for the electrostatic discharge pulse of the spacecraft comprises a pulse sensor, a pulse sampling circuit, a high input impedance voltage follower, a positive peak value detection circuit, a negative peak value detection circuit, an A / D (analogue-to-digital) converter, a pulse width threshold value comparison circuit, a pulse width output circuit, a charge discharge circuit, a microcontroller and a memory; according to the monitoring device, a monitoring method is provided for acquiring characteristic parameters of the electrostatic discharge pulse on an orbit in a space environment; the real-time detection of the electrostatic discharge pulse in the space can be realized; the on-orbit harm degree of a satellite can be characterized comprehensively; the obvious social benefits can be brought to long service life and high-reliability operation of the satellite.

Description

technical field [0001] The invention belongs to the technical field of space radiation effects and reinforcement, and specifically designs an on-orbit monitoring device for electrostatic discharge pulses of spacecraft. Background technique [0002] In a spacecraft in a space plasma environment, the interaction between surface materials, devices and plasma will continue to accumulate charges, which can generate a negative potential of thousands of volts or even nearly ten thousand volts on the surface. When the potential of the spacecraft surface exceeds the medium When the electric field is broken down, electrostatic discharge will be generated. The strong current pulse and high-voltage electric field pulse generated by electrostatic discharge are easily coupled by the spacecraft bus or electronic components, causing transient interference such as spacecraft power supply burnout and circuit logic output errors. Serious It will cause device open circuit, short circuit, transi...

AI Technical Summary

Problems solved by technology

However, due to the limitations of the space environment, the interior space of the spacecraft, and the discharge of charges, the ground detection device and method cannot be applied to space on-orbit monitoring.

In addition, the electrostatic discharge pulse detection device currently used in the space only counts the number of discharge pulses, but has no way of knowing the pulse width and amplitude of the discharge pulses.

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