Unlock instant, AI-driven research and patent intelligence for your innovation.

On-orbit Refresh Reinjection Imaging System Based on Space Application

An imaging system, refocused technology, applied in data reset devices, instruments, electrical digital data processing, etc., can solve problems such as logic inversion

Active Publication Date: 2021-05-28
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention provides an on-orbit refresh and re-injection imaging system based on space applications to solve the problem that the logic units inside the existing FPGA are prone to logical inversion under the bombardment of space particles

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • On-orbit Refresh Reinjection Imaging System Based on Space Application
  • On-orbit Refresh Reinjection Imaging System Based on Space Application
  • On-orbit Refresh Reinjection Imaging System Based on Space Application

Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0036] Specific implementation mode 1. Combination Figure 1 to Figure 6 To illustrate this embodiment, the on-orbit refresh and reinjection imaging system based on space applications includes a refresh imaging unit and a main controller, and the refresh imaging unit includes a refresh chip, FPGA, Flash, PROM group, bus driver and main controller.

[0037] The Flash is directly connected to the refresh chip, controlled by the refresh chip, and used to receive configuration data to be updated. Between the PROM and the FPGA, between the PROM and the refresh chip, and between the FPGA and the refresh chip, a bus driver is used to switch paths.

[0038] The main controller controls the refresh configuration process through the logic control signal and the serial port. The main controller sends the configuration data to be updated to the FPGA through the serial port, and the FPGA writes the received configuration data into the refresh chip connected to the refresh chip through the ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The on-orbit refresh and re-injection imaging system based on space application relates to an on-orbit refresh and re-injection imaging system, which solves the problem that the logic unit inside the existing FPGA is prone to logical inversion under the bombardment of space particles. The present invention is based on the in-orbit refresh chip Track refresh and re-injection imaging system has three working modes: FPGA directly loads from PROM, refresh chip does not work; refresh chip works, FPGA indirectly loads the program stored in PROM; refresh chip works, FPGA loads Flash with updated imaging. The serial port of the refresh chip is controlled by the FPGA controlled by the refresh chip; for a control system with a master backup, an external combinational logic circuit is used to generate a control signal for the configuration loading process, and hardware configuration is performed on the pins of the refresh chip. Through the refresh enabling function, the present invention can disconnect the refresh circuit when the refresh chip breaks down, so as to ensure the stable and reliable operation of the FPGA.

Description

technical field [0001] The invention relates to an on-orbit refresh and reinjection imaging system, in particular to an on-orbit refresh and reinjection imaging system that works for a long time. Background technique [0002] SRAM FPGA has been widely used because of its advantages of low development cost, short cycle and system reconfigurability, but this FPGA is very sensitive to the single event upset effect caused by particle incident. A single-event upset can result in changes to the logic function within the FPGA or errors in user data. Today's technology is developing rapidly. With the increase of satellite payload life, on-orbit re-injection technology can be used to upgrade the satellite payload software to meet the changing needs of users. In order to achieve high reliability in aerospace applications, multiple refresh and re-injection modes are required. Contents of the invention [0003] The present invention provides an on-orbit refreshing and re-injection i...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G06F13/40G06F1/24
CPCG06F1/24G06F13/4068
Inventor 余达刘金国徐东周磊王国良张艳鹏赵莹
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI