Simulation testing system based on fault injection

Abstract

The present invention relates to a simulation test system based on fault injection, including a simulation module, a test module, a data collection and analysis module and a test real-time monitoring module, and the simulation module, the test module, the data collection and analysis module and the test real-time monitoring module are all It is connected to the shared memory and the data in the shared memory is shared. By modifying the data in the test module, it can intervene in the work of other modules to complete the fault injection of the simulation test system. A simulation test system based on fault injection of the present invention can flexibly change the data generated in the test process, provide more effective test means, avoid the disadvantages of directly modifying the simulation model when performing fault and abnormal tests, and eliminate the faults of the system The domain is separated from the normal domain to ensure the state consistency of the cross-link system during the test process, which is helpful to study the real impact of faults on the target system and related failure behaviors, and to evaluate the effectiveness of the fault tolerance mechanism of the target system.

Description

technical field [0001] The invention belongs to the field of aviation airborne software testing, in particular to a simulation testing system based on fault injection. Background technique [0002] Due to the complexity and high reliability requirements of the airborne embedded software and the system itself, the dynamic testing of the airborne embedded software requires testing under special scenarios such as boundary, strength, limit, abnormality, and failure. At present, most fault injection testing techniques inject faults into the target system (or test system). This method cannot flexibly modify the test process data. Secondly, for some faults and abnormal tests, it is necessary to directly modify the simulation model to increase the The workload and test cycle cannot effectively simulate some limit cases and special faults, so the fault tolerance mechanism of the target system cannot be fully evaluated. Contents of the invention [0003] The object of the present i...

AI Technical Summary

Problems solved by technology

At present, most fault injection testing techniques inject faults into the target system (or test system). This method cannot flexibly modify the test process data, and secondly, for some faults and abnormal tests, it is necessary to directly modify the simulation model to increase the The workload and test cycle cannot effectively simulate some limit cases and special faults, so the fault tolerance mechanism of the target system cannot be fully evaluated

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