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Multi-probe star sensor data transmission fault monitoring and autonomous recovery method

A technology of star sensor and data transmission, applied in signal transmission system, electrical signal transmission system, instruments, etc., can solve problems such as abnormal operation of multi-probe star sensor, abnormal data transmission of data transmission, inconsistent accuracy of three-axis attitude measurement, etc.

Active Publication Date: 2020-08-07
SHANGHAI AEROSPACE CONTROL TECH INST
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AI Technical Summary

Problems solved by technology

Due to the limitation of working mechanism and structure, the traditional star sensor has several deficiencies: first, its three-axis attitude measurement accuracy is inconsistent; second, due to the interference of ambient stray light, it cannot continuously output attitude
[0005] During the operation of the star sensor, when the data transmission between the head and the line box is affected by external interference or the data transmission is abnormal due to the failure of the spacewire communication interface, the multi-probe star sensor will work abnormally

Method used

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  • Multi-probe star sensor data transmission fault monitoring and autonomous recovery method
  • Multi-probe star sensor data transmission fault monitoring and autonomous recovery method
  • Multi-probe star sensor data transmission fault monitoring and autonomous recovery method

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Embodiment Construction

[0034] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] A multi-probe star sensor consists of several heads1, such as figure 1 As shown, in the application embodiment of the present invention, the multi-probe star sensor includes three heads 1 , which are a first head 1 , a second head 1 and a third head 1 respectively. Each header 1 includes a header communication interface module 2 . like Figure 4 As shown, each head communication interface module 2 is signally connected to the...

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Abstract

The invention provides a multi-probe star sensor data transmission fault monitoring and autonomous recovery method. The method comprises the following steps that S1, each header monitors a state of communication between the header and a circuit box in a frame period, generates a header communication status word and sends the header communication status word to the circuit box; S2, the circuit boxjudges whether data sent by each header in the frame period is normally downwards transmitted to the circuit box or not, generates a status word of downwards transmitting the data of the header to thecircuit box, acquires a working state of receiving an instruction head by the circuit box in the frame period, and generates a work status word of the circuit box; S3, the circuit box stores the status word of downwards transmitting the data of each header to the circuit box, the work status word of the circuit box and the received header communication status word in a multi-probe star sensor working state memory; and S4, a CPU reads the data of the multi-probe star sensor working state memory and judges whether data transmission of each header and the circuit box is normal or not, and when the header is judged to have a fault, the CPU controls the header to be autonomously powered off or on.

Description

technical field [0001] The invention relates to the field of star sensor monitoring and control, in particular to a multi-probe star sensor data transmission fault monitoring and autonomous recovery method. Background technique [0002] The star sensor is the attitude measurement device with the highest accuracy on all kinds of spacecraft at present, and it is also the key sensor of the astronomical inertial integrated navigation system. Due to the limitation of the working mechanism and structure, the traditional star sensor has several deficiencies: firstly, its three-axis attitude measurement accuracy is inconsistent; secondly, due to the interference of ambient stray light, the attitude cannot be continuously output. At present, the method of installing multiple star sensors is commonly used on spacecraft to overcome the above shortcomings. This method improves the accuracy of three-axis attitude determination by fusing the attitudes of each star sensor. However, for hi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G08C19/00
CPCG08C19/00
Inventor 周琦樊茜茜陈芳刘轩金荷李新鹏任平川余路伟练达施金花
Owner SHANGHAI AEROSPACE CONTROL TECH INST
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