A star sensor focal plane assembly

A star sensor, focal plane technology, applied in electrical components, color TV parts, TV system parts and other directions, can solve the problems of low heat dissipation efficiency, easy change of detector installation position, etc., to achieve reliable work, Good signal-to-noise ratio and good consistency

Active Publication Date: 2019-01-15
SHANGHAI AEROSPACE CONTROL TECH INST
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Problems solved by technology

In "A Design of Panchromatic / Multi-Spectral Focal Plane Circuit for High-Speed ​​and High-Resolution Remote Sensing Camera" published by Han Zhixue et al. in "Space Return and Remote Sensing" (2012), the core component of a focal plane circuit, the detector print, is disclosed. The board is still made of FR4 material. Under the influence of mechanics and heat, the installation position of the detector is easy to change. The traditional heat dissipation method of CCD detector can only be heat conduction and radiation heat dissipation. Due to the limitation of structure and space, the heat dissipation efficiency is low

Method used

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  • A star sensor focal plane assembly
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  • A star sensor focal plane assembly

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Embodiment Construction

[0030] based on the following Figure 1 ~ Figure 3 , specifically explain the preferred embodiment of the present invention.

[0031] Such as figure 1 As shown, the present invention provides a star sensor focal plane assembly, comprising:

[0032] The detector support frame 1 is used to support and connect various parts in the focal plane assembly of the star sensor;

[0033] CCD detector 2, which is mechanically fixed on the detector support frame 1, for sensitive external information;

[0034] PCB rigid-flexible printed board 3 is mechanically fixed on the detector support frame 1. The PCB rigid-flexible printed board 3 integrates a drive circuit 4 and a video signal processing circuit 5. The combination of rigid and flexible can obtain a stable drive circuit and a video signal processing circuit to realize the layered design of electronics, and finally realize product miniaturization; the drive circuit 4 is electrically connected to the CCD detector 2, which is used to ...

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Abstract

A star sensor focal plane assembly, including: CCD detector, PCB rigid-flexible printed board and TEC refrigerator are mechanically fixed on the detector support frame, and the drive circuit and video signal processing circuit are integrated in the PCB rigid-flexible printed board , the drive circuit is electrically connected to the CCD detector, and the video signal processing circuit is electrically connected to the CCD detector. The invention realizes the integration and miniaturization of components, realizes precise temperature control of the detector, forms a good heat dissipation path of the detector, ensures good consistency of each performance parameter of the detector, long-term stable and reliable operation, and can obtain a good signal-to-noise ratio video image.

Description

technical field [0001] The invention relates to a star sensor focal plane assembly. Background technique [0002] The star sensor is an attitude measurement product, which is mainly used to determine the three-axis attitude of the spacecraft relative to the inertial coordinate system. It has the advantages of high precision, good stability, and no error accumulation over time, so it is widely used in satellites, spacecraft and other aircraft superior. As the core stand-alone unit for spacecraft attitude determination, the star sensor is divided according to its structure and consists of five parts: optical-mechanical components, product main structure, focal plane components, electronics and software. Among them, the focal plane component is the key unit of the star sensor, including detectors, driving and video signal processing circuits, refrigerators and supporting structures. [0003] Due to the complex space environment, the actual working temperature range of the sta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/232G01C21/02
CPCG01C21/02H04N23/67
Inventor 闫晓军吴永康马英超毛晓楠胡雄超
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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