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Computer system based on multi-module redundancy embedded software and design method

A technology of embedded software and computer systems, applied in the directions of calculation, generation of response errors, instruments, etc., can solve problems such as system work paralysis, and achieve the effects of eliminating asynchrony, improving fault tolerance, and improving reliability.

Pending Publication Date: 2019-01-11
SICHUAN AEROSPACE SYST ENG INST
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to provide a method and system for reliability design of embedded software based on multi-mode redundancy, which is used to solve the problem that embedded software only uses software redundancy technology to improve reliability in special application scenarios in the prior art. During space radiation, there is a problem that the system work is paralyzed due to a software system failure

Method used

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  • Computer system based on multi-module redundancy embedded software and design method
  • Computer system based on multi-module redundancy embedded software and design method
  • Computer system based on multi-module redundancy embedded software and design method

Examples

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Embodiment 1

[0053] combined with figure 1 with image 3 As shown, a computer system based on multi-mode redundant embedded software is composed of three redundant modules respectively installed in three computers, and the redundant modules include a system management module, a data IO module, a voting module, a flight A control module and recorder, wherein:

[0054] System management module: used for system startup initialization and programming of the above modules;

[0055] Data IO module: installed in the computer CPU, used to receive external redundant input data through the input interface of the redundant module, and communicate with the flight control module;

[0056] The voting module includes a synchronization unit, a fault detection and system reconfiguration unit, a voting unit and a data interaction unit, among which:

[0057] The synchronization unit is used to control the synchronization of the three computers in the program execution state, cycle timing and time base, so...

Embodiment 2

[0067] combined with figure 2 As shown, a computer system design method based on multi-mode redundant embedded software, including:

[0068] Step S1: Deploy redundant modules on the three computers respectively, and complete system initialization and programming of each module program;

[0069] Step S2: Synchronize. If the synchronization is successful, the data IO modules in the three redundant modules read the input data synchronously; if the synchronization is unsuccessful, set the synchronization flag failure and enter the downgrade process: when a single machine failure is detected, start the system Reconstruction restores the faulty machine. The currently controlled CPU, that is, the current flight, sends control power-off and power-on commands to restore the faulty machine. At the same time, the current control enters into dual-machine hot backup according to the power-off status read. Operating mode.

[0070] Step S3: The three redundant modules cross-transmit the r...

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Abstract

The invention discloses a computer system based on multi-module redundancy embedded software, which is composed of three redundancy modules: a system management module used for initializing system start; a data IO module used for receiving the data of the external redundant input; a voting module used to realize the synchronization and data exchange of the three redundancy modules and voting output, fault detection and system reconfiguration; a flight control module used for command processing and control rule solving; a recorder used to recording and storing data, and performing data exchangewith the host computer. The invention also discloses a design method thereof, comprising the following steps: S1, the redundancy modules are deployed; S2, reading the input data by the data IO moduleafter synchronization; S3, three redundancy modules interact with one other to input data; S4: the voting module performs input data voting and output right voting. The whole software system adopts athree-module redundancy architecture, and the FPGA also adopts the three-module redundancy architecture, which can realize the high reliability of the system in case of failure.

Description

technical field [0001] The invention relates to the technical field of embedded software reliability design, specifically, a computer system and a design method based on multi-mode redundant embedded software. Background technique [0002] In the field of existing embedded software design, with the continuous improvement of embedded task requirements, the task presents the characteristics of diversity and complexity. Embedded software is always affected by complex environments during operation, such as temperature, atmosphere, magnetic field, radiation, charged particles and other environmental factors, which may reduce the reliability of embedded hardware and cause failures; some special application scenarios For example, in space, it must be able to adapt to the harsh working environment, especially in the space environment, the space radiation (total dose effect and single event effect) poses a great threat to the reliability of embedded software operation, such as in the...

Claims

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Application Information

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IPC IPC(8): G06F11/07
CPCG06F11/0739
Inventor 张波王诗利姚天问杨涛杨晓龙
Owner SICHUAN AEROSPACE SYST ENG INST
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