On-orbit reconstruction method and device for on-orbit aircraft

An aircraft and the same technology, applied in the field of on-orbit reconfiguration of aircraft, can solve the problems of inability to modify, high cost of PROM memory, and high cost, and achieve the effect of improving reliability and mobility, reducing costs, and improving mobility

Pending Publication Date: 2022-04-22
SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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  • Abstract
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AI Technical Summary

Problems solved by technology

However, the cost of this architecture is high, and the maximum capacity is only 16Mbit, which cannot adapt to the loader size of FPGAs such as K7 and V7.
Moreover, due to the high cost, inability to modify, and small capacity of PROM memory, it is not suitable for low-cost, high-flexibility test satellites

Method used

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  • On-orbit reconstruction method and device for on-orbit aircraft
  • On-orbit reconstruction method and device for on-orbit aircraft

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Embodiment Construction

[0036] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0037] see figure 1 , figure 1 Composition block diagram for the principle of the present invention.

[0038] The hardware design of the present invention mainly includes a note number channel, a SRAM type FPGA and a FLASH. FLASH is divided into four spaces by controlling the upper two addresses of FLASH. The fourth FLASH space is used as the original program space of the FPGA. It is not operated during the in-orbit process, and only the programs in the first three spaces are reconstructed. The on-o...

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Abstract

The invention relates to an on-orbit reconstruction method suitable for an on-orbit aircraft, which adopts an FPGA-FLASH hardware architecture, combines a data injection channel of the aircraft, and realizes health monitoring and on-orbit maintenance of a program storage state of the on-orbit aircraft through methods of on-orbit verification, on-orbit repair, on-orbit data injection and the like. According to the scheme, components resistant to single event upset do not need to be used, and the cost of the aircraft is effectively reduced on the premise that the reliability of the aircraft is guaranteed; through an on-orbit data injection method, program version upgrading can be carried out on orbit, and the maneuverability is effectively improved.

Description

technical field [0001] The invention relates to the field of on-orbit reconfiguration of aircraft, in particular, the invention relates to an on-orbit reconfiguration method and device of an on-orbit aircraft. Background technique [0002] In recent years, SRAM-type FPGAs have been widely used in some low-cost experimental satellites due to their advantages of large resources and low cost. To deal with single event flipping, improving the reliability of SRAM FPGA has become a problem that cannot be ignored. [0003] The protection against SRAM-type FPGA anti-monadle flipping is mainly divided into two parts: one part is the guarantee for the FPGA loading program, and the other part is the guarantee for the FPGA that has been powered on and loaded with the program. For the latter, the FPGA-PROM architecture is mostly used on the planet at present. Since the PROM is an anti-fuse memory chip, the program cannot be changed after burning, so it is not affected by single event fl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F11/14G06F8/65G06F15/78
CPCG06F11/1494G06F11/1489G06F8/65G06F15/7882
Inventor 庞轶环黄禹欧阳尚荣李上彦
Owner SHANGHAI SPACEFLIGHT INST OF TT&C & TELECOMM
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