An optoelectronic component for a dual-axis miniature analog sun sensor

Abstract

The invention provides a photoelectric assembly for a biaxial miniature analog type sun sensor. The photoelectric assembly comprises mask glass, a mask glass installing plate, a silicon photocell, a ceramic base, a base installing plate, a support screw and a conical screw nut, wherein sun rays are emitted onto the light receiving surface of the silicon photocell through a mask glass light passing hole; each detection light sensitive region of the silicon photocell outputs different photo-generated current; further, the sun vector biaxial azimuthal angle is worked out; when the sun vector azimuthal angle exceeds the sun sensor view field, the monitoring photosensitive region corresponding to the super view filed direction outputs the photo-generated current due to illumination receiving, so that the super view field boundary indication is given out. The assembly can realize the high-precision measurement of the sun vector angle in a large-view-field range; the characteristics of modularization and light weight are realized; in addition, the structure is simple; the processing and the realization are easy. The biaxial miniature analog type sun sensor based on the assembly has the advantages that the development trends of micromation, miniaturization and intelligentization of a future satellite platform can be sufficiently met; wide application prospects are realized.

Description

technical field [0001] The invention relates to a photoelectric component for a dual-axis miniature analog solar sensor, belonging to the technical field of solar sensors in a spacecraft GNC system. Background technique [0002] The solar sensor can be used to detect the orientation of the spacecraft body fixed with the solar sensor relative to the sun vector to determine the attitude of the spacecraft. Orientation and other tasks are important measurement components in the spacecraft GNC system. [0003] Microsatellites have the characteristics of light weight, small size, short development cycle, strong maneuverability, flexible launch, and can form a network. Like conventional satellites, the GNC system is an important guarantee for the realization of various functions of the microsatellite platform. Due to the moderate position of the sun, the solar sensor is easy to achieve miniaturization and low power consumption, and can perform high-precision detection of the sun ...

AI Technical Summary

Problems solved by technology

[0004] Analog solar sensors based on photovoltaic characteristics of photovoltaic cells have great advantages in small size, low power consumption, low cost, and high update rate. However, most of the current analog solar sensors are based on A / B silicon photocells, which can only measure The single-axis sun vector angle, and the sensor volume, quality, field of view and accuracy cannot meet the growing development needs of spacecraft, especially the development of micro-satellites, which poses severe challenges to its application

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