One-dimensional PSD sensor assembly applicable to on-orbit deformation measurement of satellite structure

Abstract

The invention provides a one-dimensional PSD sensor assembly applicable to on-orbit deformation measurement of a satellite structure. The one-dimensional PSD sensor assembly comprises a casing and a PSD signal processing board arranged in the casing, wherein a PSD signal processing circuit is arranged on the PSD signal processing board and comprises a one-dimensional PSD chip, a current sampling circuit, a voltage amplifying circuit, an output protecting circuit, a precision power supply circuit, a heating circuit and a temperature measuring circuit; the one-dimensional PSD chip is used for sensing the position of an incidence laser point; the current sampling circuit and the precision power supply circuit are connected with the one-dimensional PSD chip; the voltage amplifying circuit andthe current sampling circuit are connected with the output protecting circuit; the heating circuit is connected with an external power supply; the temperature measuring circuit is connected with an external temperature acquiring single machine. The one-dimensional PSD sensor assembly can be used for realizing non-contact measurement of on-orbit deformation of the satellite structure, and has an own temperature measuring function and an autonomous thermal control function in a low-temperature environment.

Description

technical field [0001] The invention relates to the field of spacecraft, in particular to a one-dimensional PSD sensor assembly suitable for on-orbit deformation measurement of satellite structures. Background technique [0002] Due to the complexity of the satellite structure and its materials, the repeated and alternating changes in the space thermal environment are likely to cause obvious thermal deformation of the satellite structure, and the structural deformation may have a serious impact on the accuracy of imaging and pointing of some payloads on the satellite. With the improvement of spacecraft performance, more and more attention has been paid to the impact of structural deformation on the performance indicators of the main loads of on-orbit satellites, and the application requirements of structural deformation measurement technology have also become increasingly important. and on-orbit corrections to provide data support. Traditional structural deformation measure...

AI Technical Summary

Problems solved by technology

Traditional structural deformation measurement is mostly based on contact measurement devices such as optical fibers, which are generally large in size and weight. Especially for long-distance, large-array applications, contact measurement devices often occupy more space and weight. and thermal control resources, and it is easy to affect the measured, so it is more meaningful to develop a lightweight, non-contact measuring device

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